We have 100F+ heat here quite a bit of the summer and I still put my pigs and buns outside. Here are some tips I have for keeping them cool:
1. Wet the bottom of their enclosure. In the bottom of their pen, we put some soft, sandy dirt that I thought would feel good on their feet, but not too dusty. I will take the animals out for a second so they don't scared when I spray the water all over their cage. I spray everything with the hose just to make sure they will stay cool.
2. Give them some wet mats to lay on. Every year I buy these indoor/outdoor mats from DollarTree to use in the pen. They retain water pretty well, so I hose them off, stick them in the pen, and put some houses on top so they feel secure. You can also do this with towels and they love to lay on them.
3. Only use wooden houses. Plastic houses retain a lot of heat, so use wooden houses instead. If you wet these, they might warp a little, but it stays super cool inside there.
4. Shade. Always keep your piggies in the shade when it's hot out.
5. Water. ALWAYS keep water available to your piggies. Multiple, large water bottles will ensure they won't run out. You can also put an ice cube or two in there to keep it cooler for longer.
6. Lawn time. If it's too hot to put the animals in their outdoor pen (usually like 110F), I will put them on the lawn. Our back lawn is always in the shade so it's a nice place for them to relax. If you wet it a little bit, it stays super cool.
7. Feed cold, watery vegetables. Veggies such as lettuce, cucumber, and watermelon all contain a ton of water and can cool them off and hydrate them.
I hope these help your piggies beat the heat!
Gia xoxo