Horse Hot Weather Management and Heat Stress

Horses are vulnerable to heat stress during exercise and in hot environments, and management practices including water access, shade provision, and exercise modification are critical welfare measures.

Key Facts

Horses generate substantial metabolic heat during exercise and rely primarily on sweating for thermoregulation.
Heat stroke in horses can be fatal within hours if not recognized and treated promptly with aggressive cooling.
Horses lose significant electrolytes in sweat and require fresh water and electrolyte supplementation during hot weather.
Clipping horses that have not fully shed their winter coat prevents heat stress during spring exercise.
Competition events held in high heat and humidity require modified scheduling and enhanced monitoring to protect horse welfare.

Welfare Considerations

Heat stress in horses is a genuine welfare emergency that can escalate to life-threatening heat stroke within a single exercise session in severe conditions. The responsibility for managing this risk lies with horse owners, trainers, and competition organizers who must prioritize welfare over competitive schedules. Preventive measures including early morning exercise, water and electrolyte access, and shade provision during turnout are straightforward and effective.

What You Can Do

Exercise horses in the coolest part of the day during hot weather and reduce intensity if temperatures exceed 30C.
Ensure continuous access to fresh clean water and provide electrolyte supplementation during sweaty work.
Provide shade in paddocks and turnout areas, particularly for dark-coloured horses who absorb more heat.
Know the signs of heat stress including elevated respiratory rate, stumbling, and excessive sweating and respond immediately.