How to keep horses cool and safe in extremely hot weather

We’re expecting “How to keep horses cool in summer” will be a popular Google search this week. Here in the UK we experienced record temperatures of more than 30ºC in May and some areas are predicted to reach 40ºC this week. How many of you had that on your 2026 bingo card?

A heatwave that early in the year was unusual, and this week will be even more uncomfortable – and dangerous. Therefore, owners need to think about how to keep a horse cool right now, and we’ve got you covered. Here are Horse & Hound’s top tips on for keeping horses cool when things get really hot.

How to keep horses cool when temperatures soar

The number one piece of advice for working horses is to exercise them as early in the morning as possible. While the evening could be an option, check your weather app in advance. It can still be well above 25ºC at 9pm in a heatwave, which might not be suitable for you or your horse.

Safe stabling

1. If your horse is normally stabled at night and out during the day, consider reversing his turnout times to avoid the hottest temperatures and the worst of the flies – especially if he has limited shade or shelter in the field.

Before deciding, check his stable isn’t actually more uncomfortable in the heat than his paddock. If there’s poor ventilation and no through breeze, his stable could be very stuffy. Setting up a portable fan out of reach of your horse may help to increase airflow and have a cooling effect.

2. If there is no permanent shelter or tree cover in your horse’s paddock, but you’d like him to stay out, you could use some sheeting to rig up a safe, temporary area of shade so he has the option.

Turnout tips

3. A light coloured fly rug or summer sheet works better than a dark coloured one for keeping the horse cool, because white is best for reflecting the sun’s heat.

A rug that has a loose weave material lets the horse’s body heat and sweat out more than a tight weave, but as a compromise provides less effective protection from the smallest flies and midges.

A wet rug has hugely increased cooling properties, so hosing the rug down while it is on your horse multiple times a day is worthwhile in the hottest temperatures.

4. Bringing your horse in for a cool hose off and turning him back out without scraping off the water will give him respite from the heat. If you can do it more than once, so much the better.

5. Pink skin and white areas on the face and heels are most commonly affected by sunburn because they have less skin pigment and hair coverage, so remember to apply one of the best suncreams for horses to these areas.

A fly mask with UV protective properties may also be helpful. Plus, those with a built-in nose net offer extra protection for pink noses.

a horse stands under the shade of a large tree on a warm summer day

Hot horses will appeciate having the option to seek shade or shelter. Photo: Alamy

How to keep horses cool while travelling

6. If you have to transport your horse in the hot weather, leave as early as possible. This avoids travelling in the worst heat and reduces the risk of getting stuck in traffic. Professional transporters in the UK are not allowed to move horses in temperatures exceeding 30°C – and this is a good rule of thumb for private owners to follow.

7. If you transport your horse, ensure all suitable windows are open to keep fresh air flowing through the horsebox. You can also use portable fans to help keep your horse cool.

If you have a roof vent, opening only the rear section while you are moving helps to draw the hot air out of the vehicle while cool air can enter through the windows. On arrival, the roof vent should be opened fully.

However, your horse might not be cooler standing on the lorry or trailer, even if he is out of the direct sun – think of dogs in hot cars. Consider whether he would be better off outside in the shade.

How to cool down a horse quickly

8. If you suspect that your horse may be suffering from heat stroke, put him in the shade and cool him continuously with free-flowing cool water.

The best way to do this is with a hosepipe, but if the hose has been sitting in the sun, make sure you run it first to remove any water that was left in the pipe. This water can be extremely hot and cause scalding so take care when you check it so you don’t get burnt either.

If you don’t have a hose, use a watering can or pour buckets over your horse instead. You will likely have to refill the vessels and repeat several times.

Another key is to allow the water to run off or evaporate without scraping off the excess liquid. The belief that leaving water on a horse will “cook” him is an equestrian urban myth – it simply isn’t true. The best way to cool a horse down quickly is to allow the water to draw heat away from the horse’s skin by evaporation.

You should also offer the horse water to drink every few minutes. If the horse appears wobbly (ataxic) then try to keep them walking in the shade, while continuing to apply cold water. If signs persist, contact your vet as a matter of urgency.