Best Rain Jackets for Hiking: Waterproof, Breathable & Packable

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A rain jacket is the item you resent carrying right up until the moment it saves your day. The best one for you balances how waterproof it is against how breathable and packable it is — because a jacket that keeps rain out but traps sweat can leave you just as wet from the inside. Here are four picks and the specs that actually tell you how a shell will perform.

Our top hiking rain jacket picks for 2026

How to choose a hiking rain jacket

Waterproof rating and taped seams

Waterproofness is measured in millimetres of a hydrostatic head test — roughly 10,000mm and up handles serious hiking rain, while 20,000mm shrugs off prolonged downpours. Just as important: fully taped seams. An untaped seam leaks no matter how good the fabric, so check the label says “fully taped” rather than “critically taped.”

Breathability and pit zips

Breathability (often shown as a g/m²/24h figure or an RET rating) tells you how well sweat vapour escapes. No membrane vents as fast as you sweat on a steep climb, so pit zips — underarm vents you can open on the move — are the most effective way to dump heat without taking the jacket off.

Weight and packability

The best jacket is the one you carry. Ultralight shells around 200–300g pack tiny and are easy to justify bringing “just in case,” while burlier jackets add durability and warmth for winter and mountain use. Match the weight to how rough your trips really are.

Fit for layering

Your shell needs room for a fleece or light down layer underneath without pinching. Check the hood adjusts around a hat and turns with your head, and that the cuffs and hem seal well — small details that decide whether rain runs off you or down your sleeve.