Best Lightweight Waterproof Trousers for UK Walks and Camps

Waterproof trousers are not glamorous.

Nobody looks at a pair of overtrousers and thinks, “There’s the soul of adventure.”

But when the rain starts properly, the grass is soaked, the wind picks up, and your hiking trousers start sticking to your legs like cold wallpaper, suddenly they make a lot of sense.

For UK walks and camps, lightweight waterproof trousers are one of those bits of kit people often skip until they’ve had one truly miserable wet day. Then they understand.

The trick is choosing a pair that is light enough to actually carry, easy enough to pull on when rain arrives, and waterproof enough to be worth the faff.

If you’re sorting your full wet-weather setup, this guide to keeping your gear dry on a wet UK hike or wild camp is a good place to start.

Quick Picks: Best Lightweight Waterproof Trousers UK

Best overall waterproof trousers: Rab Downpour Waterproof Pants
Best budget waterproof trousers: Regatta Pack-It Waterproof Overtrousers
Best hillwalking overtrousers: Berghaus Deluge 2.0 Waterproof Overtrousers
Best ultralight emergency trousers: Montane Minimus Nano Pull-On Waterproof Pants
Best value hiking trousers: Decathlon Quechua MH500 Waterproof Overtrousers
Best premium 3-layer trousers: Patagonia Torrentshell 3L Rain Pants
Best UK-brand lightweight option: Alpkit Parallax Waterproof Trousers
Best simple campsite pair: OEX Waterproof Overtrousers

Do You Actually Need Waterproof Trousers?

Not for every walk.

For a short summer stroll, you might be fine without them. If it rains, your legs get wet, you go home, and life continues.

But waterproof trousers are worth carrying when:

• heavy rain is forecast
• you’re walking through wet grass
• the route is long
• the ground is exposed
• it’s cold and windy
• you’re camping overnight
• you’ll be sitting around camp
• you’re walking in winter
• you hate wet trousers sticking to your legs
• you need to stay warm as well as dry

They are especially useful in the UK because rain is rarely the only problem.

Rain plus wind is the real villain.

Wet legs in mild weather are annoying. Wet legs in cold wind are properly miserable.

Waterproof Trousers vs Water-Resistant Trousers

Water-resistant walking trousers are useful for drizzle, light showers and damp vegetation.

Waterproof trousers are for proper rain.

There is a difference.

Water-resistant trousers can shed some moisture, but they will eventually wet out. Waterproof trousers use a membrane or coating, taped seams and a more protective construction to keep rain out.

For UK walking, the best setup is often:

• quick-drying walking trousers for normal use
• lightweight waterproof overtrousers in the bag
• waterproof trousers pulled on when rain turns serious

You do not need to wear waterproof trousers all day unless conditions demand it.

That is how you create a sweaty leg greenhouse.

What to Look for in Lightweight Waterproof Trousers

Good waterproof trousers should have:

• taped seams
• waterproof fabric
• packable design
• sensible weight
• comfortable waistband
• ankle zips or side zips
• room over walking trousers
• enough leg length
• decent breathability
• easy on/off over boots
• durable enough fabric for your routes

The big features that matter most are fit, zips and breathability.

If they do not fit over your walking trousers, they are useless.

If you cannot get them on over boots, you will avoid using them.

If they do not breathe at all, you’ll get damp from the inside instead.

Classic waterproof trouser nonsense.

1. Rab Downpour Waterproof Pants — Best Overall Waterproof Trousers

The Rab Downpour Waterproof Pants are the easy all-round recommendation for UK walkers.

They are light enough to carry, protective enough for proper rain, and practical enough for regular hillwalking, wet dog walks, camps and general miserable-weather use.

Rab lists the Downpour Waterproof Pants at 262.5g in a men’s medium, using 50D Pertex Shield 2.5-layer fabric, with a 20,000mm hydrostatic head and 20,000g/m²/24h MVTR breathability rating.

Best for: day walks, hillwalking, wet trails, camps and general UK outdoor use.

Why it earns its place:

• good balance of weight and protection
• proper waterproof rating
• breathable 2.5-layer fabric
• packable enough for day bags
• suitable for hillwalking
• trusted UK outdoor brand

Possible downside: not as cheap as budget overtrousers.

If you want one pair of waterproof trousers for most UK walks, these are a strong first pick.

2. Regatta Pack-It Waterproof Overtrousers – Best Budget Waterproof Trousers

The Regatta Pack-It Waterproof Overtrousers are the simple budget pick.

They are not fancy. They are not premium. They are not going to make you feel like a mountain guide.

But they are affordable, packable and useful for keeping in a day bag, car boot, festival kit, dog-walking bag or campsite setup.

Regatta describes its Pack-It Overtrousers as lightweight, unlined, packable into their own stuff sack, and made with Isolite waterproof and breathable fabric.

Best for: beginners, casual walkers, festivals, campsites, dog walks and backup rain kit.

Why it earns its place:

Possible downside: not as breathable, durable or refined as better hiking trousers.

For occasional wet walks, these make sense. For serious hillwalking, I’d upgrade.

If you’re keeping kit affordable, this guide to five EDC pieces under £50 is a good next read.

3. Berghaus Deluge 2.0 Waterproof Overtrousers – Best Hillwalking Overtrousers

The Berghaus Deluge 2.0 is a classic UK hillwalking-style overtrouser.

It is more substantial than many emergency waterproof trousers, with useful side zips for ventilation and easier on/off. Berghaus lists the Deluge 2.0 with Hydroshell fabric, 3/4 length side zips, an 18,000g/m²/24h breathability rating, 12,000mm waterproof rating, and a listed product weight of 388g for a UK large.

Best for: hillwalking, wet weather, colder walks, exposed routes and regular UK use.

Why it earns its place:

• 3/4 length side zips
• easier to pull on over footwear
• useful ventilation
• solid waterproof protection
• more durable feel than ultralight options
• good for proper wet days

Possible downside: heavier than minimalist waterproof trousers.

If you walk in proper rain rather than just carrying emergency kit, the Deluge 2.0 is worth considering.

4. Montane Minimus Nano Pull-On Waterproof Pants – Best Ultralight Emergency Trousers

The Montane Minimus Nano Pull-On Pants are for people who want waterproof leg protection with minimum pack weight.

These are not the trousers I’d choose for smashing through brambles or kneeling around camp all evening. They are more of a fast-and-light emergency shell.

Montane describes the Minimus Nano waterproof pants as using PETRICHOR 2.5-layer technology with a 15,000mm hydrostatic head, designed for high-output outdoor activity. Ultralight Outdoor Gear lists the medium at around 106g, making them a very specialist lightweight option.

Best for: fast hiking, lightweight wild camps, emergency rain protection and minimal day bags.

Why it earns its place:

Possible downside: more delicate and less campsite-proof than heavier trousers.

If your waterproof trousers usually stay in the bag “just in case”, these are the kind of trousers that make sense.

5. Decathlon Quechua MH500 Waterproof Overtrousers – Best Value Hiking Trousers

The Decathlon Quechua MH500 Waterproof Overtrousers are a sensible value pick for regular walkers who want more than the cheapest emergency trousers.

Decathlon positions the MH500 as lightweight hiking waterproof overtrousers that can be slipped on quickly without removing your shoes, making them more practical when rain arrives mid-walk.

Best for: budget hikers, regular countryside walks, day bags and wet-weather backup.

Why it earns its place:

• good value
• hiking-focused design
• quick to pull on
• useful for day walks
• practical overtrouser style
• easier step up from basic budget pairs

Possible downside: check sizing and boot access carefully, especially if you wear bulkier walking boots.

Decathlon kit often makes sense when you want function without paying premium-brand prices.

6. Patagonia Torrentshell 3L Rain Pants – Best Premium 3-Layer Trousers

The Patagonia Torrentshell 3L Rain Pants are a more premium option for walkers who want a proper 3-layer shell.

Patagonia lists the men’s Torrentshell 3L Rain Pants at 335g, using a 3-layer 50-denier ECONYL nylon shell. They also have two-way side zips from cuffs to thighs, designed for easier pull-on over boots and ventilation.

Best for: regular walkers, wet-weather hiking, travel, campsites and people who prefer 3-layer shells.

Why it earns its place:

• 3-layer construction
• 335g listed weight
• side zips for boot access
• useful ventilation
• good balance of protection and packability
• premium build

Possible downside: more expensive than basic overtrousers.

If you want waterproof trousers that feel less like emergency plastic and more like proper rainwear, these are worth a look.

7. Alpkit Parallax Waterproof Trousers – Best UK-Brand Lightweight Option

The Alpkit Parallax Waterproof Trousers are a good UK-brand option if you want something lightweight, practical and less painfully priced than some premium names.

Alpkit describes the Parallax as lightweight waterproof trousers with a breathable 2.5-layer fabric made for movement. An Alpkit review page notes a women’s medium tested at 195g, which gives a useful idea of how light these are.

Best for: lightweight walking, UK day hikes, wet-weather backup and value-focused buyers.

Why it earns its place:

• lightweight design
• 2.5-layer fabric
• good UK brand option
• practical for day bags
• suited to movement
• strong value feel

Possible downside: lighter trousers usually trade some durability compared with heavier hillwalking overtrousers.

If you like Alpkit’s practical, no-nonsense approach, these are a neat option.

8. OEX Waterproof Overtrousers – Best Simple Campsite Pair

The OEX Waterproof Overtrousers are a straightforward choice for campsite use, wet dog walks, festival kits and casual outdoor backup.

They are the kind of trousers you keep in the boot, camping box or rucksack when the forecast looks questionable.

Best for: campsites, festivals, garden camps, dog walks and backup rain protection.

Why it earns its place:

Possible downside: for serious hillwalking, choose something with better specs, side zips and breathability.

Not every pair of waterproof trousers has to be technical. Sometimes you just need something to stop your legs getting soaked while you make coffee in a damp campsite field.

Best Waterproof Trousers for UK Day Walks

For most UK day walks, I’d choose either the Rab Downpour Waterproof Pants or Decathlon Quechua MH500 Waterproof Overtrousers.

The Rab option is better if you want a more capable all-round walking trouser.

The Decathlon option is good if you want value and practicality.

For casual walkers, the Regatta Pack-It may be enough.

The key thing is that they’re light enough to carry. Waterproof trousers left at home because they’re bulky are not waterproof trousers. They’re wardrobe decoration.

If you’re building a day-walk setup, this guide to packing a day bag will help you carry enough without overpacking.

Best Waterproof Trousers for Hillwalking

For hillwalking, look for better zips, breathability and durability.

Good picks:

• Rab Downpour Waterproof Pants
• Berghaus Deluge 2.0 Waterproof Overtrousers
• Patagonia Torrentshell 3L Rain Pants
• Alpkit Parallax Waterproof Trousers

For hills, side zips are useful because conditions change quickly. You may want to pull trousers on without removing boots, or vent heat during climbs.

A cheap pair may be fine as emergency backup, but if you walk hills often, better trousers are worth it.

Best Waterproof Trousers for Campsites

For campsites, comfort and simplicity matter.

Good picks:

• Regatta Pack-It Waterproof Overtrousers
• OEX Waterproof Overtrousers
• Decathlon Quechua MH500
• Berghaus Deluge 2.0

Campsite use is different from hiking.

You might be sitting on damp chairs, walking through wet grass, setting up tents, making coffee, packing gear or dealing with rain around the car.

You do not always need premium mountain trousers. You just need something that keeps wet grass and rain from ruining your evening.

Best Waterproof Trousers for Wild Camping

For wild camping, weight and pack size matter more.

Good picks:

• Montane Minimus Nano Pull-On Waterproof Pants
• Rab Downpour Waterproof Pants
• Alpkit Parallax Waterproof Trousers
• Patagonia Torrentshell 3L Rain Pants

For one-night wild camps, waterproof trousers are useful if the forecast is wet, the grass is soaked, or you’ll be pitching in rain.

They also help in the morning when everything is damp and you’re kneeling around the tent pretending packing away a wet shelter is character-building.

If you’re planning a simple first overnight, this beginner-friendly wild camp guide will help you keep the whole thing sensible.

Pull-On vs Side-Zip Waterproof Trousers

This matters.

Pull-On Waterproof Trousers

Good for:

Less good for:

Side-Zip Waterproof Trousers

Good for:

Less good for:

For regular UK walking, side zips are worth having.

For lightweight emergency trousers, pull-on is fine.

How Should Waterproof Trousers Fit?

They should fit over your normal walking trousers without feeling like you’ve wrapped your legs in cling film.

Check:

• enough room over base trousers
• comfortable waistband
• no tight pulling at knees
• long enough when walking
• not dragging under boots
• easy movement uphill
• no awkward bunching
• easy to pull on when wet

Try them with your actual walking trousers and boots.

Trying waterproof overtrousers over jeans in your bedroom tells you very little, except that mirrors are cruel and waterproof trousers are never flattering.

Waterproof Trousers and Breathability

Even breathable waterproof trousers can get clammy.

That is normal.

Waterproof fabric has a hard job: keep rain out while letting sweat escape. When you’re climbing hard in mild rain, your body can produce more moisture than the fabric can move.

To manage sweat:

• vent with side zips
• wear quick-drying trousers underneath
• avoid overdressing
• slow down slightly on climbs
• remove them when rain stops if warm
• use them early enough to keep base trousers dry

Waterproof trousers are not magic.

They are a tool. Use them when conditions justify them, then vent or remove them when they don’t.

Waterproof Trousers vs Gaiters

Waterproof trousers and gaiters do different jobs.

Waterproof Trousers

Protect your legs from rain, wind and wet grass.

Gaiters

Protect lower legs, socks and boots from mud, water, grit, heather and wet vegetation.

For some walks, gaiters are enough.

For heavy rain, waterproof trousers are better.

For wet moorland, winter mud or long grass, both can make sense.

Gaiters are especially useful with boots. Less so with low trail shoes, unless designed for them.

Are Waterproof Trousers Worth It in Summer?

Sometimes.

Summer rain can still be heavy, and wet grass can soak your trousers quickly.

But summer is also when waterproof trousers can feel hot and sweaty.

For summer walks, carry lightweight waterproof trousers if:

• heavy rain is forecast
• the route is long
• you’re exposed
• you’ll be out all day
• you need to stay warm if delayed
• you’re camping

For short warm walks, quick-drying trousers may be enough.

Wet legs in warm weather are often manageable.

Wet legs in cold wind are less charming.

If you’re heading out in warmer weather, this summer hiking EDC guide covers sunscreen, water and other warm-weather basics.

What to Wear Under Waterproof Trousers

Usually, wear them over your normal walking trousers.

Good base options:

• lightweight hiking trousers
• softshell walking trousers
• leggings
• thermal leggings in winter
• shorts in warm weather

Avoid jeans.

Wet jeans under waterproof trousers are a grim little ecosystem.

For campsites, waterproof trousers over joggers or base layers can work, but for walking, technical trousers are better.

How to Pack Waterproof Trousers

Keep them easy to reach.

Good places:

• top of rucksack
• front pocket
• outer pouch
• beside waterproof jacket
• dry bag if already wet
• car boot camping kit box

Do not bury them under lunch, spare layers, stove bits and a weird old cereal bar.

If rain arrives fast, you want waterproofs fast.

How to Care for Waterproof Trousers

Waterproof trousers need basic care.

Do:

• follow the wash label
• clean mud off
• dry them properly after use
• store them dry
• refresh DWR coating when needed
• avoid fabric softener
• repair small tears early
• keep zips clean

Do not leave them crumpled wet in a bag for a week unless you enjoy creating a smell with legal personality.

Waterproof kit works better when you look after it.

Common Waterproof Trouser Mistakes

Leaving them at home

The most common one.

Buying too small

They need to fit over layers.

Ignoring zips

Side zips make a big difference when boots are muddy.

Putting them on too late

Once your trousers are soaked, you’ve missed the easy win.

Wearing them all day unnecessarily

You’ll sweat. Then complain they’re “not breathable”.

Not checking leg length

Too short and rain runs into boots. Too long and they drag.

Buying ultralight for rough use

Lightweight is good. Fragile is not.

Forgetting campsite use

Wet grass around camp can soak you just as fast as rain.

Simple Waterproof Trouser Choices by Trip Type

Casual dog walk

Regatta Pack-It or OEX Waterproof Overtrousers.

Beginner day hike

Decathlon Quechua MH500 or Rab Downpour.

Wet hill walk

Rab Downpour, Berghaus Deluge 2.0 or Patagonia Torrentshell 3L.

Lightweight wild camp

Montane Minimus Nano, Alpkit Parallax or Rab Downpour.

Family campsite

Regatta Pack-It, OEX or Berghaus Deluge 2.0.

Festival weekend

Regatta Pack-It or Decathlon MH500.

Fast hiking

Montane Minimus Nano or Alpkit Parallax.

Final Verdict: Which Waterproof Trousers Should You Buy?

If I had to recommend one pair of lightweight waterproof trousers for most UK walkers, I’d choose the Rab Downpour Waterproof Pants.

They are light, protective and practical enough for proper UK weather.

If you want the budget pick, get the Regatta Pack-It Waterproof Overtrousers.

If you want a more capable hillwalking pair, choose the Berghaus Deluge 2.0.

If you want the lightest emergency option, choose the Montane Minimus Nano Pull-On Pants.

If you want value, look at the Decathlon Quechua MH500.

If you want a premium 3-layer shell, the Patagonia Torrentshell 3L Rain Pants are worth considering.

Waterproof trousers will never be the coolest item in your kit.

But when rain is hammering down, wet grass is brushing your legs and the wind is making things personal, you will not care.

Dry legs are underrated.

For more wet-weather walking advice, this bad weather guide explains what to do when the forecast turns on you mid-walk.

Waterproof Trousers FAQs