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Horse Health

Horse Hot Weather UK

By , EditorPublished Last updated 1 min read

Quick answer

In UK heatwaves, horses need constant shade, unlimited water, and reduced workload. Dehydration increases colic risk. If breathing stays fast at rest or your horse is dull and not drinking — call your equine vet the same day.

Key takeaways

  • Many yards reduce or stop work when the combined heat and humidity make cooling difficult. Ride early or late, shorten sessions, and ensure unlimited water before and after.
  • An adult horse may drink 25–50 litres daily — more in heat and after exercise. Constant clean water must be available; dehydration worsens colic risk.
  • High respiratory rate that does not slow at rest, elevated heart rate, dullness, reduced sweating (in some cases), or collapse. Call your equine vet immediately.

A wider perspective: working-horse welfare and ways to help from the non-profit World Animal Rescue Network.

Field and stable management

According to the BVA and RSPCA, horses need reliable access to shade and clean water in hot weather — dehydration can increase colic risk. Check that:

  • Shade is available in every paddock — trees, shelters, or bring in during peak heat
  • Fresh water is checked twice daily — automatic troughs can fail
  • Stables stay ventilated; avoid working in closed hot boxes
  • Fly stress is managed — fly rugs and yard advice as appropriate

Riding in heat

  • Exercise at dawn or dusk only during heatwaves
  • Reduce intensity and duration
  • Cool down slowly with walking and tepid water on neck
  • Know your horse's normal pulse and respiration at rest

Heat stress vs colic

Both are emergencies. Heat stress: rapid breathing, weakness. Colic: pawing, rolling, looking at flank — see Horse health basics.

Sources & further reading

This guide draws on the publicly available UK advice listed below. Follow the links for the relevant guidance or the organisation's broader care resources.

PETHEALTH+ is independent. These organisations do not sponsor, approve, or partner with this website. Editorial sources and further reading (last updated 2026-06-25).

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Also see symptoms, symptom checker, and poison guide.

Frequently Asked Questions

Can you ride a horse in a heatwave?
Many yards reduce or stop work when the combined heat and humidity make cooling difficult. Ride early or late, shorten sessions, and ensure unlimited water before and after.
How much water does a horse need in hot weather?
An adult horse may drink 25–50 litres daily — more in heat and after exercise. Constant clean water must be available; dehydration worsens colic risk.
What are signs of heat stress in horses?
High respiratory rate that does not slow at rest, elevated heart rate, dullness, reduced sweating (in some cases), or collapse. Call your equine vet immediately.

When it can’t wait, call your vet. Breathing difficulty, collapse or suspected poisoning need urgent advice.

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