Best waterproof hiking trousers UK 2026: overtrousers worth carrying on every hike

Most UK hiking days do not require waterproof trousers. A DWR-treated hiking trouser handles drizzle, morning dew and light showers without drama. But when the weather turns seriously wet, sustained heavy rain on an exposed ridge, driving coastal wind on the South West Coast Path, a January day in the Brecon Beacons when the sleet comes sideways, a proper waterproof overtrouser is not optional. It is the thing that makes the difference between a manageable situation and a genuinely unpleasant one.

My own pair, the Patagonia Torrentshell 3L Pants, live in the car permanently. They went on for Pen y Fan in January. They go on at the kids' sporting events when it inevitably rains. They have not failed once. That is the kind of reliability a waterproof overtrouser needs to earn.

For most people the best buy right now is the Berghaus Deluge 2.0: in stock, around £55, and the pairing of brand, build and value that covers the vast majority of UK wet days. The Patagonia remains the premium choice and the pair I trust most, but it is currently low on stock with delivery running into early October, so if you need cover now the Deluge is the one to reach for. Here are the options worth buying in the UK right now, from the best-in-class to the budget pick that overachieves for the price.

Every overtrouser in this guide, compared

The whole guide in one table. Tap a name to jump to the full write-up, or the buy button to check today's price.

Waterproof overtrousers vs waterproof hiking trousers

A waterproof overtrouser is a lightweight shell that goes on top of whatever you are already wearing. It is not designed to be worn as a standalone trouser. It is the layer you pull on when the weather turns properly wet, over your regular hiking trousers.

A waterproof hiking trouser combines stretch, breathability and waterproofing in a single garment designed to be worn as your primary trouser layer. These are typically heavier, more expensive and less packable than overtrousers.

For most UK day hikers the two-layer approach is more practical: lightweight DWR hiking trousers as the main layer with a packable overtrouser in the pack for when conditions deteriorate. This covers the vast majority of UK hiking scenarios without carrying unnecessary weight on dry days.

What waterproofing ratings actually mean

Hydrostatic head ratings measure how much water pressure a fabric can resist before it leaks. The number is in millimetres.

10,000mm is adequate for moderate rain. 20,000mm handles sustained heavy rain. 28,000mm (standard Gore-Tex) handles the most severe conditions. For UK hiking, anything above 15,000mm is capable in all but the most extreme conditions.

Breathability ratings measure how much water vapour can escape through the fabric. A MVTR of 10,000g/m²/24hrs is adequate. 20,000g/m²/24hrs is good. 25,000g/m²/24hrs or above is excellent. Higher breathability matters most on active hikes where you generate significant heat.

Gore-Tex vs Pertex Shield vs proprietary membranes

Gore-Tex is the benchmark with a minimum hydrostatic head of 28,000mm and Gore's guaranteed-to-keep-you-dry promise. Gore-Tex Paclite is the lightweight packable version. Performance is outstanding and the premium price reflects that.

Pertex Shield is the membrane used by Rab and Montane. Lightweight, highly breathable and excellent at managing moisture during active use. Not quite as bombproof as Gore-Tex in truly sustained extreme conditions but meaningfully better at breathability during high-output activities.

Patagonia's H2No Performance Standard is their proprietary 3-layer system, rated at 20,000mm waterproofing and 20,000g/m²/24hrs breathability. Genuinely excellent in real conditions as anyone who has worn the Torrentshell in serious rain can confirm.

Proprietary budget membranes vary enormously in quality. Review volume and real-world feedback are the most reliable indicators of performance at lower price points.

1. Patagonia Torrentshell 3L Pants

The waterproof overtrouser I have used and trusted for years, and the premium pick in this guide. The H2No Performance Standard 3-layer construction is genuinely waterproof in sustained heavy rain, not just adequately waterproof for the first twenty minutes. Mine went on for Pen y Fan in January in sleet and driving wind, came off several hours later and my legs were dry throughout.

The ankle zips deserve specific mention. They are large enough to get these trousers on and off without removing your boots. That sounds like a minor detail until you are standing on a muddy path in driving rain trying to change layers, and you realise just how much that design decision matters. Not all waterproof overtrousers get this right. The Torrentshell does.

Made from 100% recycled materials, PFAS-free, Fair Trade Certified factory. The full picture on H2No construction is in the Torrentshell 3L jacket review. One thing worth knowing: these are currently low on stock, with Amazon delivery running into early October, and they remain hidden from Amazon search results, so the button below is the reliable way to find them. If you need cover before then, the in-stock Berghaus Deluge 2.0 below is the better call.

• Waterproof in sustained heavy rain, not just adequate
• Large ankle zips: on and off without removing boots
• 3-layer construction stays comfortable against skin for hours
• 100% recycled materials, PFAS-free, Fair Trade certified
• Pairs perfectly with the Torrentshell 3L jacket

Should you buy it? If you hike regularly in UK conditions and want the most trusted overtrouser you can pull on and forget about, yes, this is the premium choice. The one caveat right now is stock: Amazon delivery is running into early October, so if you need waterproof cover sooner, the in-stock Berghaus Deluge 2.0 is the sensible buy.

2. Berghaus Deluge 2.0

The overtrouser most UK hikers actually buy, and the best value pairing of brand, build and price in this guide. Where the Patagonia is the buy-once premium pick, the Deluge is the workhorse that covers the vast majority of UK wet days for less than half the money.

Hydroshell 2L is Berghaus's own waterproof membrane, and Berghaus rates it for everything from drizzle to downpours. The 3/4 side zips with snap closures are the practical detail that matters most in the field: they open the leg far enough to pull the trousers on over muddy boots without a balancing act, and snap shut so the zip cannot creep open on the move. The waist is elasticated with a drawcord, and the legs are articulated so they move with you on steep ground rather than pulling tight over every stile.

At around £55 with a heavier, more durable construction than the ultralight options further down this guide, this is the workhorse choice. There is a women's version at the same money.

• Hydroshell 2L waterproofing rated from drizzle to downpours
• 3/4 side zips with snap closures: fast changes over boots
• Elasticated drawcord waist and articulated legs for a comfortable stride
• Durable construction that handles regular hard use
• Men's and women's versions at around £55

Should you buy it? Yes, if the Patagonia price is a stretch or these are an occasional-use layer. Berghaus build quality, the right zip design, and a price that makes the decision easy.

3. Helly Hansen Loke Pants

The other name-brand overtrouser at sensible money, and the natural cross-shop against the Deluge. Helly Hansen has been making kit for wet Norwegian weather since 1877, and the Loke is their straightforward waterproof trouser: Helly Tech construction that is waterproof, windproof and breathable, in a lightweight 100% polyamide shell with an adjustable waist.

Helly Hansen positions these as the quick-fix layer for impromptu trips, which is exactly how most UK hikers use overtrousers: stuffed in the pack or the car, pulled on when the forecast turns out to be fiction. At around £57 for the men's and £50 for the women's version, they sit within pounds of the Deluge, so the choice comes down to fit and availability. One thing worth knowing: stock runs thinner on these than on the Berghaus, so if your size is there, it may not be for long.

• Helly Tech: waterproof, windproof and breathable
• Lightweight polyamide shell, easy to carry as a just-in-case layer
• Adjustable waist for layering over hiking trousers
• Men's and women's versions from a serious wet-weather brand

Should you buy it? Yes, if the fit suits you or the Deluge is unavailable in your size. The Loke does the same job with a lighter shell and the backing of a brand that has been keeping people dry at sea for nearly 150 years.

4. Berghaus Paclite GTX Overtrousers

The benchmark for lightweight packable overtrousers. Gore-Tex Paclite fabric delivers the 28,000mm hydrostatic head rating and Gore's guaranteed-to-keep-you-dry promise in a 2.5-layer construction that weighs around 228g and packs to the size of a clenched fist.

The three-quarter length side zips allow you to pull these on quickly over boots in an unexpected downpour and also provide ventilation when working hard on a climb. The elasticated waist with additional shockcord gives a comfortable fit over varying trouser layers. More than 90% bluesign approved fabrics.

• Gore-Tex Paclite: 28,000mm waterproofing with Gore's guaranteed to keep you dry promise
• 228g, among the lightest overtrousers available
• Packs to the size of a clenched fist
• Three-quarter length zips: easy on over boots and ventilation when needed
• bluesign approved fabrics

Should you buy it? Yes, if you prioritise weight and packability. The Paclite is the right choice for fast-paced hiking, long days where pack weight matters, or anyone who wants Gore-Tex performance without the bulk. One honest caveat from Amazon reviews: fit it carefully with your jacket to ensure coverage at the waistband overlap.

5. Montane Minimus Pants

Among the lightest proper waterproof overtrousers available in the UK. The Pertex Shield fabric is highly breathable, making these the right choice for high-output activities where most waterproof trousers become uncomfortably hot. Trail runners and fast hikers reach for these specifically because the breathability is in a different category from heavier Gore-Tex options.

In real-world testing including high-altitude treks and sustained heavy rain days in the Lake District, the Minimus Pants kept water out completely whilst remaining comfortable with minimal condensation. The quarter-length ankle zips are the design trade-off: lighter and more streamlined than full-length zips, but they make getting the trousers on over boots harder and require boot removal in some situations.

• Ultralight: around 147g, among the lightest overtrousers available
• Pertex Shield: exceptional breathability for high-output activities
• Proven in demanding conditions including mountain and high-altitude use
• Packs extremely small, barely registers in a pack

Should you buy it? Yes, if you move fast and run hot. The Minimus is for hikers who have been frustrated by sweating inside heavier waterproof shells. If you are a regular-pace day hiker who wants straightforward on-off convenience over boots, the Berghaus or Patagonia options are more practical.

6. Rab Downpour Eco Waterproof Pants

The Rab Downpour Eco Pants are the best waterproof trousers overall in Live For The Outdoors' 2026 group test, praised for being lightweight and breathable yet incredibly effective, keeping testers completely dry through hours of relentless rain. The 25,000g MVTR breathability rating puts them ahead of many Gore-Tex alternatives in active use.

The sustainability credentials are genuine: made from Pertex Revolve, a 20D recycled polyester fabric that is both recycled and fully recyclable. PFC-free DWR coating. The knee articulation gives better mobility than many overtrousers. Three-quarter length side zips allow easy on and off over boots.

• Best overall pick in Live For The Outdoors 2026 group test
• 25,000g MVTR breathability: outstanding for active hiking
• 100% recycled and recyclable Pertex Revolve fabric
• PFC-free DWR: better for the environment without performance sacrifice
• Articulated knees for genuine freedom of movement

Should you buy it? Yes. The Rab Downpour Eco is the standout choice in this guide for anyone who wants top-tier performance, outstanding breathability and a clear conscience about the environmental impact of their kit. At ~£100 it is not cheap but it earns the price.

7. The North Face Resolve Trousers

The North Face entry point into waterproof overtrousers. The Resolve uses TNF's own DryVent 2L fabric: fully waterproof, windproof and breathable. Not Gore-Tex, not Pertex Shield, but a proprietary membrane that performs solidly in UK conditions at a price below the premium options.

The brand recognition is part of the value. TNF is a name that many hikers trust, the review base is strong, and the trousers are widely available in the UK. The TNF fit and sizing is consistent across the range, which means if you already own the Exploration Convertible or Regular Tapered hiking trousers, the Resolve will size predictably alongside them.

• Trusted TNF brand with strong UK availability and review base
• DryVent 2L: solid waterproofing at a below-premium price
• Consistent TNF sizing: pairs reliably with other Exploration range trousers
• Good all-round option for everyday UK hiking conditions

Should you buy it? Yes, if TNF is your brand and you want a sensible waterproof layer that pairs with your existing kit. If you are brand agnostic, the Rab Downpour Eco performs better at a similar price. If budget is the priority, look at the Berghaus Deluge 2.0 instead.

8. Mammut Alto Light HS Pants

The combination this guide has not had until now: full-length side zips in a lightweight shell. The Berghaus Deluge gives you 3/4 zips in a heavier construction. The Paclite and Minimus give you low weight with shorter zips. The Alto Light gives you both at once: 289g with zips that open the entire leg, so they go on over muddy boots without a balancing act in the rain, and Mammut lists a low packing volume to match.

The 2.5-layer Mammut DRY Tour laminate is rated at 15,000mm water column with 15,000g/m²/24h breathability. That is below Gore-Tex Paclite's 28,000mm on paper, but right at the level the ratings section above identifies as capable in all but the most extreme UK conditions, with a PFC-free DWR on the face fabric.

The material is stretchable, which is rare in a waterproof overtrouser and pays off on high steps and stiles. An elastic waistband and Velcro adjustment at the hem and leg width sort the fit over different trouser layers, and there is a leg pocket with a water-repellent zip. Recycled materials, solution-dyed fabric and Fair Wear certification cover the environmental side.

• Full-length side zips: the fastest on and off over boots in this guide
• 289g with a low packing volume
• Stretch fabric moves on high steps in a way rigid shells do not
• PFC-free DWR, recycled materials, Fair Wear certified

Should you buy it? Yes, if full-length zips and low weight are both priorities and you are willing to pay for the combination. At ~£170 it is the most expensive overtrouser in this guide, and the Rab and Patagonia options deliver higher ratings for less money if the trousers tend to stay on once fitted. If your days involve repeated weather changes, the Alto Light is the one built for them.

9. 33,000ft Waterproof Trousers

The budget pick. Over 1,400 Amazon reviews at a price point that removes the need for deliberation. At around £35 these are the waterproof overtrousers you buy when you need cover without spending serious money.

The brand name is unfamiliar to most UK hikers, which is exactly the kind of situation where review volume matters more than heritage. 1,400 reviews indicates genuine sales and real-world testing across a range of conditions. Budget waterproofing membranes vary enormously in quality and review volume is the most reliable proxy for actual performance when independent expert tests are not available.

• Outstanding value at ~£35
• 1,400 Amazon reviews providing genuine real-world performance data
• Lightweight and packable for occasional use
• No risk entry point for hikers trying waterproof overtrousers for the first time

Should you buy it? Yes, if budget is the primary consideration or you are not sure how much you will use waterproof overtrousers. At £35 the risk is low and the 1,400 review count suggests genuine performance. If you end up using overtrousers regularly, upgrade to the Rab or Patagonia options later.

How to choose waterproof hiking trousers for UK conditions

Ankle zip length is the most underrated factor. Getting waterproof overtrousers on and off over hiking boots in wet conditions is the real-world test that separates good designs from frustrating ones. Three-quarter length zips make this straightforward. Quarter-length zips require removing boots. Know which you are buying before you need it in the rain.

Match the membrane to how you move. If you generate significant heat on the move, breathability is more important than raw waterproofing. Pertex Shield (Rab, Montane) breathes better than Gore-Tex Paclite during high-output activity. If you are mostly stationary in rain or move at a moderate pace, Gore-Tex's guaranteed waterproof promise is the priority.

Packability vs durability. Ultralight constructions like the Paclite and Montane Minimus pack to almost nothing. Heavier constructions like the Deluge 2.0 are more robust. If overtrousers are an emergency layer that lives at the bottom of your pack, packability wins. If you pull them on and off regularly in demanding conditions, durability matters more.

2.5-layer vs 3-layer. Three-layer constructions bond the outer fabric, membrane and inner liner together, creating a comfortable, breathable, durable result that wears well for hours. 2.5-layer constructions are lighter and cheaper but can feel clammy during sustained wear. For overtrousers worn briefly in occasional downpours, 2.5-layer is fine. For anything you expect to wear for several hours at a time, 3-layer is worth the investment.

Size up if you are layering. Waterproof overtrousers go on top of your hiking trousers and potentially a base layer. A fitted overtrouser over multiple layers can restrict movement. When between sizes, go larger.

DWR maintenance extends performance. DWR coatings on waterproof fabrics degrade over time and with washing. Tumble drying on a low heat after washing reactivates the coating. Grangers or Nikwax reproofing spray restores performance when it eventually drops significantly. Replacing overtrousers before this maintenance step is almost always unnecessary. The method is identical to a jacket, and our guide to reproofing a waterproof jacket covers the wash-in and spray-on steps that work just as well on overtrousers.

UK-specific considerations. UK coastal paths deliver driving sideways rain in a way that exposed seams feel differently from overhead rain. Fully taped seams are non-negotiable for anything beyond light showers. Check that the overtrouser you are buying specifies fully taped seams rather than critically taped seams, which only tapes the highest-stress points.