Are Waterproof Shoes Breathable? Why Your Feet Sweat
Short answer: yes, some waterproof shoes are breathable, but none are perfectly so. A waterproof membrane is designed to block liquid water while letting water vapour (sweat) pass through, yet your feet can still make more moisture than any shoe can move out. Fit, socks and how long you wear the shoes matter as much as the membrane.
Why your feet get damp in the first place
Feet are built to sweat. According to Patient.info, a pair of feet normally has about 250,000 sweat glands and produces roughly half a pint of sweat a day. That is before you add a shoe on top.
The same source notes that some shoes and socks can increase sweating and stop it evaporating. Synthetic materials and tight shoes that limit airflow are the usual culprits.
Research summarised by Blister Prevention adds an interesting detail: the top of the foot sweats far more than the sole, roughly 70:30 in the studies it cites. So the sweat you feel under your arch is only part of the story, and the upper of your shoe has plenty of moisture to deal with.
What "breathable" means in a waterproof shoe
Older waterproof footwear, such as solid rubber boots or heavily treated leather, offered very little ventilation. Modern designs aim to do two jobs at once. As Vessi explains, membranes and waterproofed knits are intended to block liquid water while letting vapour escape.
The catch is that breathability is a rate, not an on-off switch. Vapour only moves out when there is a gap between the damp air next to your skin and the drier air outside. On a humid, muggy day, or when you are walking fast, that gap shrinks and the shoe will feel warmer and clammier. Non-waterproof shoes usually breathe more freely, but they soak through in real rain. Our explainer on waterproof versus water-resistant shoes covers how those labels differ.
Why wet-weather shoes can still feel sweaty
- Fit. A tight shoe leaves little room for air to move around your foot.
- Socks. Cotton holds sweat against the skin. Vessi suggests merino wool or moisture-wicking socks instead.
- Activity and weather. Running, hiking and warm, humid days all push sweat output up.
- Long wear without a break. Shoes that never fully dry between wears start the next day already damp.
Moisture is more than a comfort issue. Blister Prevention reports that mild to moderate skin hydration increases friction against the sock, which raises blister risk. If you get hot spots in wet-weather shoes, damp skin is a likely reason.
How to keep your feet drier
- Pick the right socks. Wool or other moisture-wicking socks are a better bet than cotton. Change them if they get wet or sweaty during the day.
- Rotate your shoes. Patient.info recommends alternating pairs daily so each one can dry out thoroughly. Our guide to drying wet shoes without damaging them covers how.
- Check the fit. There should be space to wiggle your toes. If you are between sizes, our size guide is a good place to start.
- Dry your feet well. Pat between the toes before putting socks and shoes on.
- Match the shoe to the day. Use waterproof shoes for genuinely wet conditions and something more open for hot, dry days.
If your feet sweat heavily whatever you wear, it is worth mentioning to a GP or pharmacist, as treatments exist for excessive sweating.
A note on how ours are built
Since this is a footwear blog, here is how our own shoes approach the problem. Oszea's ZEA-TEX construction has four layers: a breathable knit outer, a waterproof membrane, a flexible elastomer layer and a soft inner lining. It is designed for rain, puddles and wet grass rather than full submersion. Like any waterproof shoe, it will still feel warmer on a humid day than an open sandal. You can see it on the Tasman and Urban pages.
FAQ
Are waterproof shoes less breathable than normal shoes?
Generally, yes. Adding a barrier against liquid water makes it harder for air and vapour to move, even when the barrier is designed to let vapour through. Modern membranes narrow the gap but do not erase it.
Do waterproof shoes make your feet smell?
They can if moisture stays trapped. Patient.info links sweat that cannot evaporate with foot odour. Rotating pairs, changing socks and letting shoes dry fully help.
What socks are best with waterproof shoes?
Wool or moisture-wicking socks are widely recommended over cotton, which holds sweat against the skin.
Should I wear waterproof shoes in summer?
On dry, hot days a more open shoe is usually more comfortable. Keep waterproof pairs for showers and wet ground.
Is sweaty-foot dampness the same as a leak?
Not always. If your socks are damp but there is no wet patch from outside, sweat is a likely cause. If water is coming in at a seam or the opening, the shoe has a different problem.
Related reading
- Best waterproof sneakers in NZ: an honest shortlist
- How many rainy days does New Zealand actually get?