Summer Care for Pigs: Preventing Heat Stress and Sunburn

Pigs are prone to heat stress because they do not sweat effectively. That means they cannot dump body heat as efficiently as people or some other animals. In warm, humid weather, even a pig that looks comfortable at first can become stressed if there is poor airflow, direct sun, or no cool place to lie down.

Humidity makes the problem worse because evaporative cooling works less well. A pig that is wet but standing in still, muggy air may not cool much at all. This is why shade alone is often not enough. Many pigs need a combination of shade, air movement, cool water, and a cool resting surface.

Build your pig's day around the weather. Offer outdoor activity in the early morning or later evening, and reduce exertion during the hottest hours. Make sure your pig always has access to shade that does not shift away as the sun moves. Trees can help, but a solid roof, canopy, or shelter is often more reliable.

Fresh water should be available at all times, and many pigs benefit from a shallow wading area, mud wallow, misting, or supervised hosing with cool water. Moving air across wet skin can improve cooling. A child-size plastic pool or a shaded damp area may help some pigs stay comfortable, as long as footing is safe and the water is kept reasonably clean.

Sunburn is most likely in pigs with light or pink skin, thin hair, or large areas of exposed skin. The ears are a common problem spot, but the back, shoulders, and sides can burn too. The safest approach is limiting direct midday sun and providing dependable shade.

If your pig is prone to sunburn, ask your vet which pig-safe sunscreen is appropriate and where to apply it. Products made for humans may contain ingredients that are not ideal if licked or rubbed into sensitive skin. Reapply as directed, especially after wallowing or rinsing. If the skin becomes red, painful, blistered, or starts peeling, your vet should examine it.

Early heat stress may look like restlessness, shade-seeking, lying stretched out, reduced appetite, or heavier breathing than usual. As overheating worsens, you may see drooling, weakness, stumbling, depression, or a pig that feels very warm to the touch.

See your vet immediately if your pig is in direct sun or a hot environment and becomes inactive, has a high body temperature, seems disoriented, cannot stand normally, or collapses. Start cooling right away while arranging care. Use cool water, wet the head first for 10 to 15 minutes before wetting the whole body, increase airflow with a fan, and avoid ice or very cold water because sudden temperature shock can make things worse.

A summer-ready pig setup should include shade, airflow, clean water, and a cool resting area every day. Check fencing and shelter placement so your pig cannot get trapped in full sun. Dark sheds with poor ventilation can become dangerously hot, even when the outdoor temperature seems manageable.

Each morning, refill water, inspect the shade pattern, and make sure cooling options are working. During heat waves, check your pig more often, refresh water more than once daily, and consider bringing vulnerable pigs indoors or into a cooler area. Piglets, seniors, overweight pigs, and pigs with other health issues may need closer monitoring.