NO.02
Autumn & Winter · Tried & Tested
The layering guide
How to stay warm and dry outdoors, right through a British winter. Up a hill, walking the dog, or stood on the touchline in the rain. This is how I do it, from a soggy Dorset winter all the way up to the Arctic.
A free guide from coastandfell.co.uk
Start here
It's a system, not a coat
Here's the thing most people get wrong about a cold day out. They buy one big warm coat, put it on at the car, and then spend the next few hours either boiling or freezing depending on whether they're moving. Stop for a bit, whether that's a bench with a flask or the halfway point of a long walk, and they cool down fast in a coat that's now a bit damp with sweat, and wonder why they're thoroughly fed up by the time they get home.
Layering fixes that. Not because it's clever, but because it lets you change your insulation as fast as the day changes. And in a British autumn and winter, the day changes constantly.
Our cold is a wet cold, and that's really the whole story of being outdoors here. On the continent or up in the Arctic you get proper dry cold, where the air is bone-dry and the snow squeaks under your boots. Ours is different: five degrees, drizzle, a wind coming off the sea, and everything slowly getting damp from both sides. Rain from the outside, sweat from the inside. A wet cold gets into you in a way a dry cold doesn't, and it's why managing moisture matters more here than raw warmth.
I learned this the hard way long before I ever hiked, soaked and shivering on a rainy touchline, which is why a set of waterproofs has lived in my car boot ever since.
So this isn't really a hiking guide, or it isn't only one. If you spend any time outdoors in a British winter, at the park with the dog, on the sideline with a flask going cold in your hand, waiting for a bus in the dark, the thinking is exactly the same. Hikers just push it a bit harder and further from the car.
Three layers, each with one job. Add and drop the middle one as the day changes.
One rule before we start, and it's the one people ignore. You manage your temperature by taking layers off before you're too hot, not after. The moment you're sweating, you've already lost, because now you're wet on the inside and no fabric fixes that as well as just not getting sweaty in the first place. Start a climb, or a brisk walk into a cold wind, a little bit cold. You'll warm up in five minutes. Trust me on this one, it took me a soaking to learn it.
The base layer
Your base layer's only job is to pull sweat off your skin and move it outwards so you don't end up cold and clammy. For most UK autumn and winter walking, a merino or merino-blend base layer is the one to reach for. Never wear cotton.
Cotton is the enemy here. It soaks up sweat, holds it against your skin, and then chills you the second you stop moving. "Cotton kills" is a mountain-rescue cliché precisely because it's true. A cotton t-shirt under a fleece is how a nice walk becomes a cold, shivery slog, and it's why so many people stood about at the weekend are quietly miserable in a hoody that's slowly gone damp.
Merino wool
The comfortable one. Warm even when it's a bit damp, doesn't hold a smell (wear it several days running, which matters on a trip and, frankly, on a busy week), and lovely against the skin with none of the old-wool itch. Downsides: slower to dry, costs more, and thin merino wears through where a pack rubs. A merino-synthetic blend is often the sweet spot.
Synthetic
The workhorse. Wicks fast, dries fast, costs less, and lasts. The catch is the smell: synthetic base layers get properly ripe after a hard day, and no amount of washing fully sorts it once it's set in. For a single big day out, or if you run hot and sweat a lot, synthetic is a strong pick.
What to look for
A close (not tight) fit so it can wick against your skin, flat seams that won't rub under a pack strap, and a weight to match the effort: lightweight for high-output days where you'll sweat, midweight for cold standing-around days and gentler walks. If your winter is more dog-walk than mountain, midweight is the friendlier choice. Long-sleeve for autumn and winter, every time.
Going merino? We've done Icebreaker and Smartwool in detail. Prefer synthetic? The best non-merino base layers.
The mid layer
The mid layer traps the warmth. For most UK walking a fleece is the do-everything answer, because it keeps insulating when it's damp and it breathes well while you're working. A light synthetic insulated midlayer is the alternative when you want more warmth for less bulk.
Your mid layer is where you actually control how warm you are on the move. Too much and you cook, so you strip it off and stuff it in the pack. Too little and you're leaning on your shell to do a job it isn't meant for. This is the layer you'll be adding and removing all day. If you're the parent doing the "coat on, coat off" dance on a touchline, this is the layer that ends that dance.
Fleece is the default for good reason. It's warm, it breathes brilliantly so sweat keeps moving out, it dries fast, and, crucially, it keeps you warm even when it's damp. Given our wet cold, that last point is worth a lot. A fleece is also cheap, tough, and doesn't care if you snag it on a gorse bush or the dog decides to jump up mid-walk. The downside is bulk: a thick one eats space in a daypack.
Fleeces come in weights, usually 100, 200, 300. A 100-weight is a light layer for high-output or milder days. A 200 is the do-everything winter fleece for most people. A 300 is a proper warm one for cold, slow days and standing about, which, if standing about in the cold is basically your whole winter, might be the one for you. If you only buy one, a 200-weight grid fleece is hard to beat.
Synthetic insulated midlayers are the modern alternative. They're warmer than a fleece for the same weight and pack down smaller, and they breathe well enough to walk in, unlike a big puffy jacket. The trade-off: they're less tough, and a thin one won't beat a chunky fleece for pure standing-around warmth. If you run cold and never break a sweat, get the thicker fleece.
I've worn a ThruDark Phalanx fleece for a while now and it's my go-to. It's genuinely warm and properly soft. With it on under my waterproof, I honestly feel like I can face most of what the UK throws at me. When it turns really cold I'll add my Rab Cirrus over the fleece and the shell over that, and that combination has yet to let me down.
The shell
The shell keeps wind and rain out while letting sweat vapour escape. For UK autumn and winter, you want a genuinely waterproof, breathable jacket with taped seams, pit zips, and a hood that fits over a hat. "Water-resistant" is not enough for a British winter.
This is the layer that stops the weather ruining your day, and the one people most often get wrong by buying something showerproof and calling it waterproof. There's a difference, and in December it's the difference between fine and finished. Two numbers describe a waterproof, and they're worth knowing in plain English.
Hydrostatic head measures how waterproof the fabric is, in millimetres of water pressure it holds back before it leaks. Higher is more waterproof. A genuine waterproof for sustained UK rain wants to be well up in the thousands, not a few hundred. Anything sold as "water-resistant" with no rating is a shower jacket: fine for nipping to the shop, not for a day on an exposed hill, and not for standing still in the rain for an hour and a half either.
Breathability measures how fast sweat vapour escapes from the inside, and it's the one people forget. A totally waterproof jacket that doesn't breathe just traps your own sweat, so you end up soaked anyway, from the inside. The trick of a good shell is being waterproof and breathable at once, which is what membranes like Gore-Tex and Patagonia's H2No are doing.
Rain beads and runs off the top. Your sweat, as vapour, passes out through the same fabric. Waterproof and breathable, at once.
No fabric breathes fast enough to keep up with you slogging uphill, so the real-world tool is pit zips: zips under the arms you open to dump heat fast. If a winter shell has them, it's worth a lot. Also: fully taped seams, a hood that adjusts and fits over a beanie, a stiffened peak, and pockets that sit above a hip belt. I've walked in a Patagonia Torrentshell 3L for years and it's my benchmark for a do-everything UK shell.
My waterproofs have earned their place plenty of times. On last year's Jurassic Coast Ultra the rain properly arrived just after Old Harry's Rocks, pitch black, chucking it down, fourteen-odd hours behind us and three or four still to come. And on Pen y Fan last January a biting wind and driving rain got so bad we cut the day short and turned back. It was genuinely horrible, but we just needed a hot drink and a towel at the car, unlike the young woman in the car park being treated for hypothermia. That's the difference the right shell makes, and it's the same difference, on a smaller scale, between the parent who's dry at full-time and the one who spends the drive home shivering.
The bit people forget
The lower half: trousers & overtrousers
People obsess over the top three layers and then walk out in cotton jeans. Your legs run warmer than your core, so they need less thinking, but not none. Ask anyone who's stood in wet jeans at a football match how the second half went.
Hiking trousers for autumn and winter want to be a quick-drying synthetic or softshell, never cotton or denim, which soak, chill and stay wet for hours. A softshell trouser is the sweet spot for a lot of UK winter days: wind-resistant, water-resistant, warm, stretchy, and breathable enough to walk in. On a dry cold day, softshell plus a base layer can be all your legs need, and they're a lot nicer for the school run than stiff waterproofs.
Waterproof overtrousers are the leg equivalent of your shell, and in a British winter they live in the pack. Wet legs chill you fast, and once your trousers are soaked you cool from the waist down for the rest of the day. Look for full-length or three-quarter side zips so you can pull them on over your boots without the one-legged hop in a bog, or a muddy car park with the dog watching you judgementally.
Dedicated winter trousers are worth it if you do a lot of genuinely cold walking: heavier, warmer, often lined, and they save you layering leggings underneath. For the coldest UK days, or as your base for the trip at the end of this guide, they earn their place.
The simple system for legs
Base-layer leggings for real cold, softshell or winter trousers as the main layer, waterproof overtrousers in the pack for when the sky opens. That covers almost everything the UK throws at you.
Hands, head & feet
The extremities
When you get cold, your body protects your core by pulling blood back from your hands and feet first. So your extremities feel it long before the rest of you, and cold hands can end a walk faster than a cold body. It's almost always the hands and the feet that send people home early, hiker or not.
Look after the extremities and you look after the whole day.
Socks. The one most people under-think. Warm, cushioned in the right places, moisture-wicking, and wool or a wool blend, never cotton. Get the fit right: too thick and you crush the sock's loft and cut circulation, which makes your feet colder. One good pair beats two thin cotton pairs every time. I've worn Darn Tough for years, and their lifetime guarantee tells you what they think of their own durability.
Hands. A warm, wind-resistant glove does most UK days, and a waterproof glove or mitt matters the wetter it gets, because a wet glove is worse than no glove. A trick worth stealing: liner gloves under a bigger glove. The liners let you do fiddly jobs (a snack, the car keys) without baring your hands, and two layers are warmer and more flexible than one thick glove. Spare gloves in the pack are cheap insurance.
Head. You lose real heat off an uncovered head, and a hat is the fastest warmth-per-gram you can carry, which is why it's the cheapest, easiest upgrade for anyone who's cold on the sideline. A merino or synthetic beanie for most days, something that covers your ears and goes under a hood when the wind's up. A hat is the first thing I add when I stop and the last thing I take off.
For what it's worth, my own hands kit has grown over the years: cheap liner gloves for the fiddly jobs, Arc'teryx waterproof and windproof gloves for most wet days, and Mountain Equipment "big" waterproof gloves for when it turns really grim. I've just added Salomon merino liners to go inside the big ones ahead of a colder trip, though I'll admit they somehow found their way into my basket while I was shopping for something else entirely. Oops. On my head it's a Fjallraven beanie I love, except my daughter has now decided it's "our" hat and regularly steals it off me.
The stop-moving layer
The warm one: your insulated jacket
An insulated jacket is your "stop moving" layer: the warm jacket you pull on over everything the moment you stop, and what keeps a rest from turning into a chill. It is not a layer you walk in.
While you're moving, your body is a furnace and the three layers are plenty. The danger moment is when you stop: your output drops, the sweat in your layers goes cold, and the wind finds you. That's when you throw a big warm jacket over the top and trap all the heat you just made. Climbers call it a belay jacket. If you're the one standing still for ninety minutes while everyone else runs about a pitch, this is genuinely your most important layer, more than the fancy shell.
Down is the warmest thing for its weight and packs down tiny. Its one weakness: wet down clumps, loses its loft, and becomes a cold, useless mess. In our damp climate that's a genuine risk. Synthetic is a bit heavier and bulkier, but it keeps insulating when damp and dries fast, which makes it the safe, low-drama choice for a wet British winter. My own Rab Cirrus is synthetic for exactly this reason.
The insulated jacket is the layer you put on the second you stop, not one you walk in.
The UK rule of thumb
If there's real risk of it getting wet, or you're hard on your kit, lean synthetic. If you want maximum warmth for minimum weight and can keep it dry, down wins. Hold that thought: it's the exact decision that flips when the cold gets serious, which is the trip coming up.
And your boots
Most three-season hiking boots keep water out and grip mud, and for the majority of British winter walking that's exactly right. My Salomon X Ultra 360 Mid GTX handles UK winter well, with one honest limit: no insulation, so it's a poor choice for standing around in real cold. A normal boot keeps water out but does nothing to keep warmth in. For a moving day that's fine. Stand still in the cold, or walk on packed ice for hours, and you want an insulated winter boot, a genuinely different tool. It's also, for the record, why the touchline parent in wellies is always the coldest person there.
Screenshot this one
What to wear, by conditions
The whole guide on a single card. Adjust for how hot or cold you personally run, but this is the honest starting point for UK autumn and winter, whether you're heading up a hill or just out for a couple of hours.
| Conditions | Base | Mid | Shell / outer | Legs | Don't forget |
|---|---|---|---|---|---|
| Mild & wet 5–10°C, rain | Light merino/synthetic, long sleeve | Light fleece (100–200) | Waterproof shell, use the pit zips | Softshell trousers | Overtrousers in pack, waterproof gloves |
| Cold & dry 0–5°C, clear | Midweight merino | 200-weight fleece | Softshell or light shell for wind | Softshell or winter trousers | Hat, gloves, insulated jacket for stops |
| Cold & wet 0–5°C, rain/sleet | Midweight merino | 200-weight fleece | Full waterproof shell, seams taped | Winter trousers + overtrousers | Waterproof gloves, spares, warm hat |
| Exposed & windy any temp, high wind | Midweight merino | Fleece + wind-resistant midlayer | Windproof, storm cuffs, good hood | Softshell/winter + overtrousers | Buff over face, insulated jacket, hat under hood |
The golden rule
Carry the insulated jacket and the waterproofs even when you don't think you'll need them. UK weather doesn't ask permission, and the mountain rescue call-outs are almost never the people who packed for worse than they got.
When it gets properly cold
The Finland test
At the end of December I'm heading to northern Finland with the family, well inside the Arctic Circle, and it's the most serious cold I'll have walked in. I'll be honest, part of me can't wait and part of me is slightly terrified, which is usually the sign of a good trip.
Here's the part that matters for you, even if you never leave the UK, because it teaches you why the rules are the rules. Everything in this guide has been shaped by our wet cold. Take the same system to a deep, dry cold, and one big decision flips.
The down-versus-synthetic call inverts. In the UK the answer leaned synthetic, because our damp is always trying to wet your insulation out, and wet down is useless. But Arctic cold is bone-dry: the thing that kills down in Britain barely shows up. Take moisture out of the equation and down's one weakness disappears, leaving only its strengths. Same jacket, opposite verdict, purely because the context changed. That's the bit the desk-written listicles miss.
The other things that change when the cold gets this serious, each covered in full on the site:
- The base layer works harder, and sweat becomes dangerous (it freezes). Base layers for extreme cold →
- The mid layer stack gets deeper, a system you fine-tune. Midlayers for extreme cold →
- Insulation becomes survival kit, not comfort. Down jackets for extreme cold →
- Legs need real insulation, not just wind resistance. Winter legwear →
- Boots become insulated winter boots, no compromise. Winter boots for extreme cold →
- A head torch stops being optional, polar night means walking in the dark. Head torches for extreme cold →
The whole point: the three-layer system doesn't get thrown away when you go to the Arctic. It scales. If you understand it in a Dorset drizzle, you understand it at -25°C. You just need more of it, and you need to respect it a great deal more. I'm writing this before I go, on purpose. When I'm back, the tested verdicts go on the site.
Let's be honest
"This looks expensive"
Read this guide start to finish and you could talk yourself into a four-figure shopping list, and I don't want that. You do not need to buy all of this at once, and you certainly don't need the priciest version of everything. I've built my own kit up over years, one piece at a time, usually when the old thing wore out or the weather taught me a lesson. Some of it was money well spent and some, if I'm honest, was me getting carried away in a shop.
Buy in this order. The two things that make the biggest difference to a cold, wet day are a proper waterproof shell and a decent mid layer. Get those two right first. Everything else can wait. A cheap merino base and a good fleece will carry you through most of a British winter.
Spend where it counts, save where it doesn't. A shell and your boots are worth paying for, because that's where cheap kit fails you at the worst moment. Socks too, for the size of the problem they solve. But a fleece? A hat? Leggings? A supermarket own-brand keeps you just as warm, it just won't last quite as long.
You don't need the technical version for the school run. If your winter is mostly dog walks and sidelines, a midweight base, a 200 fleece and an honest waterproof is the whole job. Save the pit zips and Arctic-grade down for people spending all day out in it. No shame in not needing the fancy stuff.
Buy at the right time. Kit goes on real discount in the January sales and at the end of the season, when shops clear last year's colours. Last year's jacket is almost always this year's in a different colour for a lot less. I'm not too proud to buy the unfashionable colour.
Two things on the site that save you money
Our Hiking Gear Price Index tracks what the kit in this guide actually costs over time, so you can see whether a "sale" is a real one or just a sticker. And our live deals page refreshes nightly and flags genuine price drops on the gear we've tested. Check both before you spend. A good chunk of my own kit was bought because one of those told me the price was finally right.
Keep it working
A bit of care
Good kit that's neglected stops being good kit. Ten minutes of care keeps the whole system doing its job, and it's the difference between buying a jacket once and buying one every couple of years.
Reproof waterproofs when they wet out. When rain stops beading and the fabric soaks dark, the DWR has worn off. Wash in a technical wash (not normal detergent), apply a wash-in or spray-on reproofer, then a low tumble dry or warm iron through a cloth if the label allows. A jacket that's "leaking" is usually just wetting out.
Wash down properly, dry it fully. A special down wash and a very thorough dry, ideally a tumble on low with a couple of clean tennis balls to break up the clumps. Half-dried down stays clumped and cold. Wash it rarely.
Fleece and synthetics are easy. Warm wash, no fabric softener (it clogs the fibres and kills the wicking), air dry. That's it. Merino: wash less than you think. It resists smell for days. Wool-safe wash, cool water, dry flat.
Look after your boots. Knock the mud off, dry them away from direct heat (a radiator cooks the leather and glue), and re-treat leather now and then. Dry boots last years longer than neglected ones.
Before you go
The full reviews live on the site
That's the system, from your skin to the summit. It's layers, not a coat. Manage moisture, add and drop insulation before you're too hot or too cold, and always carry the shell and the warm jacket you hope you won't need. It works up a mountain and it works on a touchline, which is rather the point. This PDF is the map. The site is the detail.
Right. Kettle on, kit sorted, get out there. The weather's rubbish and that's rather the point.