Waterproof Cycling Accessories: The Complete Guide for UK Riders

Cyclist riding on a wet British road wearing hi-vis waterproof cycling accessories including a helmet cover and reflective backpack cover

The UK averages around 156 rainy days a year. If you cycle regularly, you're going to get caught in it. That's not a reason to stop riding. It's a reason to sort your gear out. The right waterproof cycling accessories make the difference between arriving drenched and miserable or rolling up feeling perfectly fine.

This guide covers every waterproof accessory worth considering for UK cyclists, from head to bag to bike. No fluff, just practical advice on what actually works.

Waterproof Helmet Covers

Your helmet has vents. That's great for airflow in summer. In a downpour, those vents channel rain straight onto your head. A waterproof helmet cover solves this instantly.

Good helmet covers do two jobs: they keep the rain out and they make you more visible. The BTR waterproof cycling helmet cover is bright hi-vis yellow with reflective stripes, so it doubles as a safety accessory in poor light. It weighs almost nothing and stretches to fit most road, commuter, and mountain bike helmets.

A helmet cover is one of those accessories that seems minor until you've ridden 10 miles in steady rain without one. Cold water trickling down your forehead and into your eyes isn't just uncomfortable. It's distracting. For a few quid, it's one of the easiest upgrades you can make to your wet weather kit.

If you're unsure what to look for, our guide to choosing the right cycling helmet cover breaks down the key features.

Waterproof Backpack Covers

Commuters, this one's for you. If you carry a laptop, change of clothes, or anything you can't afford to get soaked, a waterproof backpack cover is essential. Most regular rucksacks aren't anywhere near waterproof, even the ones that claim to be "water-resistant". Zips leak, seams let water in, and after 20 minutes of proper rain your stuff is damp.

A dedicated cover goes over the outside of your bag and seals everything in. The BTR reflective waterproof backpack cover is fully waterproof with taped seams, and it's covered in reflective material so drivers can see you from behind. It fits bags from 20 to 55 litres, which covers everything from a slim laptop bag to a loaded hiking rucksack.

The alternative is buying a fully waterproof bag (an Ortlieb or similar), which works well but costs significantly more and means you can only use that one bag. A cover lets you use whatever rucksack you already own. We've compared both options in detail in our backpack cover vs waterproof bag post.

Waterproof Cycling Jackets

This is the big one. A good waterproof cycling jacket is probably the single most important piece of wet weather gear you'll buy.

The key trade-off every cyclist wrestles with is waterproofing versus breathability. A jacket that keeps all rain out but traps all your sweat in is no use. You'll end up soaked from the inside instead. Look for jackets with mesh lining or venting panels that let moisture escape while still blocking rain.

The BTR hi-vis waterproof cycling and running jacket tackles this with a mesh lining and a design that works for both cycling and running. It's fully waterproof with a high collar, storm flap over the zip, and four pockets. The hi-vis yellow with reflective panels means you're covered for visibility too.

What to look for in a waterproof jacket

  • Sealed seams: taped or welded seams stop water getting in through the stitching
  • Long back: cycling-specific jackets have a dropped tail to cover you in the riding position
  • Adjustable cuffs and hem: stops wind and rain getting in at the wrists and waist
  • Reflective details: you'll be wearing this in the worst conditions, so visibility matters
  • Breathability: look for mesh lining or ventilation. If the jacket doesn't mention breathability at all, avoid it

Reflective Gilets and Vests

A gilet isn't waterproof in the same way a jacket is, but it deserves a mention here because it's a key part of any layered wet weather system. On days when rain is light or intermittent, a reflective gilet over a base layer gives you visibility without overheating.

They're also brilliant as an extra layer under or over a jacket on really cold, wet days. The wind-blocking effect across your core makes a noticeable difference, and a fully reflective gilet adds 360-degree visibility that a jacket with just reflective strips can't match.

Browse the full range of hi-vis cycling clothing to find the right combination for your rides.

Waterproof Bike Covers

This one isn't about keeping you dry. It's about keeping your bike dry. If you store your bike outside, in a shed, or anywhere that isn't a heated room, moisture will find it. And moisture means rust, corroded cables, seized bearings, and a chain that sounds like a bag of gravel.

A heavy-duty waterproof bike cover protects against rain, frost, dust, and UV damage. The BTR heavy-duty cover fits one or two bikes and is made from thick, tear-resistant material rather than the flimsy stuff that shreds in the first storm.

If you're storing your bike outdoors, a cover isn't optional. It's cheaper than replacing a rusted chain, cassette, and cables every season. Read more about why every cyclist needs a bike cover.

Phone Protection on the Bike

Your phone is probably the most expensive thing you carry on a ride, and it's also one of the most vulnerable to water damage. Modern phones have IP ratings that suggest they can handle splashes, but sustained rain at speed is a different story. Water gets into charging ports, speakers, and button seals.

There are two main approaches. A handlebar phone bag keeps your phone in an enclosed pouch with a clear touchscreen window. A silicone phone mount holds your phone securely on the bars for easy access and clear screen visibility, though it leaves the phone exposed to the elements.

For dedicated wet weather riding, a phone bag gives you the most protection. For fair weather rides where you want quick access to navigation, a mount is hard to beat. Our phone bag vs phone mount comparison covers the full trade-offs.

Building Your Wet Weather Kit: What to Buy First

You don't need to buy everything at once. Here's a practical priority order based on what makes the biggest difference for the least money:

  1. Waterproof jacket: the single most important piece. Keeps your core dry and warm
  2. Waterproof backpack cover: if you commute with a bag, this is joint first. Protecting your laptop and clothes matters
  3. Helmet cover: cheap, tiny, and makes a surprising difference to comfort
  4. Bike cover: if you store your bike outside, this pays for itself in avoided maintenance costs
  5. Phone protection: a bag or mount depending on your priorities
  6. Reflective gilet: adds visibility and an extra wind-blocking layer for cold rides

The total cost of kitting yourself out with all of these is less than a single premium waterproof jacket from the big cycling brands. That's worth thinking about.

Common Mistakes with Waterproof Cycling Gear

A few things that catch cyclists out:

  • Assuming "water-resistant" means waterproof: it doesn't. Water-resistant gear handles light drizzle. Anything more and it soaks through. If the product doesn't specifically say "waterproof" with taped or sealed seams, it won't keep you dry in proper rain
  • Ignoring ventilation: a fully sealed jacket with no breathability will leave you just as wet from sweat. Always check for mesh lining, underarm vents, or some kind of moisture management
  • Forgetting about visibility: heavy rain means poor visibility for everyone. Grey or black waterproof gear keeps you dry but makes you invisible to drivers. Hi-vis and reflective accessories aren't just for night rides. They matter on any grey, rainy day
  • Not testing gear before you need it: the worst time to discover your jacket leaks at the seams or your backpack cover doesn't fit is 5 miles from home in a downpour. Try everything on a short ride first

Looking After Your Waterproof Gear

Waterproof coatings don't last forever. Here's how to keep your gear working properly:

  • Wash regularly: dirt and body oils break down the DWR (durable water repellent) coating on jackets. Follow the care label, but most cycling jackets can go in the machine on a gentle cycle
  • Reproofing: when water stops beading on the surface and starts soaking in, it's time to reproof. Nikwax and Grangers both make wash-in and spray-on treatments. This applies mainly to jackets, not to PVC or PU-coated accessories like helmet covers and backpack covers, which don't need reproofing
  • Dry properly: hang gear up to dry after every wet ride. Don't stuff a wet jacket into a bag and forget about it. Mould and mildew will set in
  • Store clean: at the end of the season, wash everything, let it dry completely, and store it somewhere dry. Your gear will last years longer

Riding in the Rain: It's Not That Bad

British cyclists have a complicated relationship with rain. We complain about it constantly, but the ones who keep riding through it are the ones who actually enjoy cycling year-round. Once you've got the right gear sorted, a wet ride stops being something to dread and becomes just another ride.

The UK gets roughly 156 days of measurable rainfall each year, but research shows that rain actually falls during typical commuting hours (8 to 9am and 5 to 6pm) on only around 12 of those days. The perception of constant rain is worse than the reality. And on the days it does rain, proper waterproof accessories mean you arrive no worse off than someone who drove.

For a deeper look at riding technique and safety in wet conditions, read our complete guide to cycling in the rain.

Frequently asked questions

How do I keep my feet dry when cycling in the rain?

Neoprene overshoes are the standard answer and they pull on over your cycling shoes in seconds. They won't stay fully dry forever since water eventually works in through the top, but for a typical 30 to 45 minute commute they do the job. For longer rides, sealed waterproof socks under a pair of overshoes buy you another hour or so. Keeping a spare pair of socks and shoes at work is the honest backup plan.

Will a waterproof bike cover hold up in strong winds?

A properly fitted cover should, provided it's the right size for the bike and secured at the bottom. Most heavy duty covers come with elasticated hems and under-frame straps or clips that stop the cover lifting in a gust. The failures happen with oversized covers that billow or flimsy budget versions that tear at the seams. If the forecast is gale force, running a bungee cord or two around the frame for extra hold is cheap insurance.

Is a handlebar phone bag worth it if my phone already has an IP rating?

For sustained UK rain on the bike, usually yes. IP ratings are tested in lab conditions with clean water at fixed angles, not against horizontal road spray at 15mph for half an hour. Charging ports and speaker grilles are where water tends to find its way in once the seals age. A handlebar phone bag adds a physical barrier against rain and road spray for not much money, and it keeps the screen readable for navigation at the same time.

Does a waterproof bike cover trap condensation and rust the bike underneath?

It can, if the cover goes on while the bike is still soaked or the drivetrain hasn't had a chance to drip dry. Leave the bike for 10 to 15 minutes after a wet ride before covering so the worst of the water runs off. A decent heavy duty cover has small vents at the base that let moisture escape rather than sealing it in. For bikes stored outdoors long term, a quick monthly wipe of the chain and cassette keeps on top of any damp that does find its way in.

Ready to stay dry on your next ride?

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Bryn Morgan, founder of BTR Sports

Bryn Morgan

Founder of BTR Sports. Creating cycling and running accessories and clothing since 2013. Sussex based, keen cyclist and designed every product in the BTR range.

Running a cycling blog, a club or a bike shop? BTR has programmes for all three: affiliate, clubs, trade.


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