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Travelling Horses in Hot Weather – How Hot Is Too Hot?

14 Jun 2026

With temperatures climbing, it's important to think carefully before loading up and heading off with your horse.
Unlike us, horses can struggle to cool themselves efficiently during transport. Horseboxes and trailers can become surprisingly hot, even on days that don't feel excessively warm outside.
How hot is too hot?
There isn't a single temperature at which horses should never travel, as factors such as humidity, ventilation, journey length, fitness, age, and health all play a role.
However, once temperatures start reaching 25°C and above, extra precautions should be taken. When temperatures exceed 30°C, owners should carefully consider whether travel is necessary and assess the risks to their individual horse.
Tips for travelling safely in hot weather
  • Travel during the coolest parts of the day, such as early morning or late evening.
  • Ensure maximum ventilation within the horsebox or trailer.
  • Offer water before travelling and again during longer journeys.
  • Consider adding electrolytes to your horse's management plan if appropriate.
  • Avoid travelling immediately after strenuous exercise.
  • Remove unnecessary rugs and travel boots if safe to do so.
  • Plan regular stops on long journeys to assess your horse.
  • Park in the shade whenever possible.
  • ❌ Never leave a horse standing in a stationary trailer or horsebox in direct sunlight.
Background image - Istock 178371600 (1)
Watch for signs of heat stress
  • Excessive sweating
  • Rapid breathing
  • Elevated heart rate
  • Lethargy
  • Reluctance to load or travel
  • Muscle tremors
  • Reduced responsiveness
These signs should be taken seriously and may require veterinary attention.
Before you leave - Ask yourself:
  • Does my horse really need to travel today?
  • Can I travel earlier or later?
  • Do I have enough water for the journey and destination?
  • Is my vehicle well ventilated?
Sometimes the best decision for your horse's welfare is to stay at home and wait for cooler conditions. Stay safe, stay hydrated, and look after your horses during this hot weather.
If your horse develops a fever, cough, nasal discharge, or you have any concerns about possible exposure to Equine Flu, please contact the practice for advice.
Working together and acting early is the best way to help limit the spread of disease and protect our local horse population.