Sleeping bags
A decent night's kip makes the whole trip, especially with a young family. Our sleeping bag roundups and reviews live here, with a quick guide below to picking the right comfort rating for UK nights.
Sleeping bags reviews & roundups
We're revamping our camping reviews section, ready for the camping season in spring 2027. Sleeping bags reviews and roundups will land here; in the meantime the picks and latest reviews below are live across the camping section.
Sleeping bag ratings in 30 seconds
Bags are rated under ISO 23537 (formerly EN 13537) with three figures: comfort, limit and extreme. Buy on the comfort rating; extreme is a survival figure, not a sleeping one. Treat ratings as a way to compare bags, not a guarantee, and give yourself roughly a 5 degree buffer below the coldest night you expect.
Which season bag for UK camping?
A 3-season bag with a comfort rating around 0°C covers roughly April to October on UK campsites. Comfort of -3 to -5 handles the frosty edges of the season, and -5 or lower is winter kit. The month table below is the quick answer.
Sleeping bag ratings, month by month
For UK camping, match the bag's ISO 23537 comfort rating to the month's typical overnight low, with a buffer of around 5 degrees.
| Month | Typical overnight low | Comfort rating to buy | Note |
|---|---|---|---|
| January | around 2°C | -5 to -8°C | Winter kit territory |
| February | around 3°C | -5 to -8°C | Half term: proper winter bag |
| March | around 3°C | -5°C | Season opener, frosts still bite |
| April | around 4°C | 0 to -3°C | Easter camping: pack warm |
| May | around 7°C | 0°C | Half term sweet spot starts |
| June | around 10°C | 0°C | Mild nights begin |
| July | around 12°C | 5°C | Summer holidays, summer bag fine |
| August | around 12°C | 5°C | Warmest nights of the year |
| September | around 10°C | 0°C | Mild, but nights draw in |
| October | around 8°C | 0 to -3°C | Half term: add a liner |
| November | around 5°C | -5°C | Hardy campers only |
| December | around 3°C | -5 to -8°C | Winter kit, short days |
Overnight lows are rounded lowland England averages from the Met Office climate series (2020 to 2025). Clear nights run colder: that is what the comfort buffer is for.
Frequently asked questions
What do sleeping bag temperature ratings mean?+
Bags rated under ISO 23537 (formerly EN 13537) carry three figures: comfort, limit and extreme. Comfort is the temperature at which a standard cold sleeper rests comfortably, and it is the number to buy on. Extreme is a survival-only figure and should never guide a purchase.
What season sleeping bag do I need for UK camping?+
A 3-season bag with a comfort rating around 0°C covers roughly April to October on UK campsites. Comfort of -3 to -5 handles frosty season edges, and winter camping wants -5 or lower. Check the month table on this page for the quick answer.
What is a tog rating on a sleeping bag?+
Togs measure duvets, not camping sleeping bags. Camping bags use temperature ratings in degrees under ISO 23537 instead. If a sleeping bag is sold with a tog rating, it is a home or sleepover product, not one rated for a tent.
Can you zip two sleeping bags together?+
Yes, if three things match: the same zip type, a similar bag length, and one left-zip plus one right-zip. Two matched bags zipped together is the flexible alternative to a true double, because they split back into singles for solo trips.
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