5 min read
It’s a beautiful July afternoon, the garden’s calling, and your shoes — the same ones that fit perfectly at breakfast — now feel two sizes too small. By evening there are strap marks across your feet and your ankles have quietly vanished. Sound familiar?
Summer swelling is one of the most common complaints we hear from customers — and one of the most manageable, once you know what’s driving it.
1 in 5
older adults experience regular foot or ankle swelling in warm weather
Source: NHS
Half a size
how much feet can expand between morning and evening on a hot day
Source: Royal College of Podiatry
20 min
of elevation, twice daily, measurably reduces fluid pooling
Source: Journal of Foot & Ankle Research
Why heat makes feet swell
When you’re warm, your blood vessels widen to release heat — it’s your body’s cooling system working properly. But wider vessels leak a little more fluid into the surrounding tissue, and gravity sends that fluid straight down. Feet and ankles are the lowest point, so that’s where it gathers. Add a warm afternoon of sitting or standing still, and by teatime your shoes are protesting.
Age turns the dial up: circulation slows, the leg-vein valves that push fluid back upward weaken, and some common medications (for blood pressure especially) add their own contribution. Usual, manageable — but worth taking seriously for comfort’s sake.
Feet can be half a size bigger by evening than they were at breakfast. The shoe that fits at 9am and hurts at 6pm isn’t a mystery — it’s summer.
Expert guidance
“For swelling I tell everyone the same thing: buy for your evening feet, not your morning feet — and choose something adjustable, so one pair of shoes can fit both.”
James Mercer — Senior Product Advisor, The Comfort Guild
7 ways to stay comfortable
1. Feet up, twenty minutes, twice a day. On a footstool or cushion, ideally above hip height. Gravity caused the pooling; let it undo it. The one o’clock news is exactly the right length.
2. Keep moving — gently. Your calf muscles are the pump that pushes fluid back up the legs. A short walk in the cool of the morning beats standing still in the heat.
3. Ankle circles while you sit. Ten each way, every hour. It keeps the pump ticking without leaving the chair.
4. Water, more than you think. Counterintuitive, but dehydration makes your body hold fluid harder. Steady sips through the day help it let go.
5. Compression socks on the big days. Gentle, graduated pressure keeps fluid from pooling — especially good for long sits: flights, coach trips, a day at a family do.
6. Cool water at the end of the day. Five minutes of cool (not icy) water narrows those widened vessels and takes the throb out of a hot evening.
7. Shoes that adjust. The centrepiece. Straps or closures you can let out mean the shoe changes with your foot through the day, instead of digging in as it expands.
When to see a doctor
Swelling in one foot only, or swelling with pain, redness, heat or breathlessness, isn’t summer — it needs a prompt GP appointment. Even, both-sides puffiness that eases overnight is the ordinary kind.
There’s more in our swollen feet shoe guide — and if stiff joints make adjustable fastenings doubly welcome, the arthritis guide pairs well with it. Both live in the Foot Health Centre.
Summer is for gardens, grandchildren and long light evenings — not for counting the hours until you can take your shoes off. A few small habits and the right pair, and your feet get to enjoy July too.
Community discussion
7 commentsReal experiences from people managing the same thing. The Comfort Guild team reads every comment.
Derek T. Verified buyer
2 months ago
Bought the sandals for my wife after last July’s heatwave misery. The adjustable straps meant her feet could swell through the afternoon and the sandals just… coped. She loosened them a notch at lunch and carried on with her day. No red marks at night for the first summer in years.
Helpful (27)The Comfort GuildThe Comfort Guild Team
2 months ago
This is exactly what adjustability is for, Derek — feet can change most of a size between morning and evening in hot weather. A strap you can let out beats a bigger shoe every time, because the fit stays right all day.
Helpful (9)Pauline W.
6 weeks ago
Is it normal for only the ankles to swell? Mine puff up in the heat but the feet themselves stay mostly fine. Should I be worried?
Helpful (8)The Comfort GuildThe Comfort Guild Team
6 weeks ago
Ankle-first swelling in the heat is very common — fluid pools where gravity sends it. Even, both-sides swelling that goes down overnight is usually nothing sinister. One-sided swelling, or swelling with pain, heat or breathlessness, is a same-week GP conversation — worth saying plainly.
Helpful (13)Sylvia R. Verified buyer
5 weeks ago
The compression stockings mentioned in the article helped my ankles more than anything else, Pauline. I wear them on hot days and for the flight to see my grandchildren. Feet feel fresh instead of throbbing when I land.
Helpful (6)Alan G.
2 weeks ago
The “feet up for 20 minutes” advice sounds like nothing but it works. I do it with the one o’clock news now, feet on a cushion on the footstool. Evening swelling has roughly halved.
Helpful (5)Marion D.
5 days ago
Ordering the woven sandals for our trip to Portugal after reading this thread. The wide-fit velcro pair saw my mother through two summers, so hopes are high.
Helpful (2)Comments are reviewed before publishing to keep this space helpful.
Frequently asked questions
Why do my feet swell in hot weather?
Heat causes blood vessels to widen to release warmth — your body's cooling system working properly. Wider vessels leak more fluid into surrounding tissue, and gravity sends it to your feet and ankles. Age, reduced circulation and some medications (particularly blood pressure tablets) increase the effect.
What shoes are best for swollen feet?
Shoes with adjustable closures — straps, velcro or toggle laces — that you can loosen as your feet expand through the day. Avoid slip-ons that fit at 9am and squeeze by 3pm. Browse our shoes for swollen feet and wide fit shoes for adjustable options.
Does drinking water help with swollen feet?
Counterintuitively, yes. Dehydration makes your body retain fluid more aggressively. Steady sips through the day help your body let go of excess fluid rather than hoarding it. Aim for 6–8 glasses, more on hot days.
How quickly do compression socks reduce swelling?
Most people notice a difference within a few hours. Graduated compression socks apply gentle pressure that prevents fluid from pooling. They're especially effective for long periods of sitting — flights, coach trips or a day at a family gathering.
When should I see a doctor about swollen feet?
See your GP promptly if swelling is in one foot only, or comes with pain, redness, warmth or breathlessness. Even, both-sides puffiness that eases overnight is usually the ordinary heat-related kind and can be managed with the habits in this article.