Feline sun worshipers!
Cats can overheat in hot weather, so it’s important to
provide them with an environment to help keep them cool.
Cats only sweat through their paws and will rarely pant unless stressed, so taking extra steps to keep their body temperature lower will keep them comfortable during the warmer months.
Common signs of overheating and heatstroke to look out for are:
Panting
Dribbling
Wobbling or struggling to stand up

Some cats find it harder to lose heat compared to others (see below) and extra precautions should be taken in the heat for these breeds:
Flat-faced breeds – including Persians and British Shorthairs
They can have difficulty breathing because of the extra tissues at the back of their throat.
Hot weather can make things more difficult for these breeds.
Fluffy, long-haired cats
Cats with long or thick fur will feel the heat more than their short haired friends. Regular grooming is important or even a professional haircut now and again.
Older cats, cats with health problems and overweight cats
Cats with age-related health conditions, or poorly cats may be better off staying indoors in the cool. They are less able to deal with hot weather compared to their healthy, younger friends.
Top tips – outdoors
Provide plenty of shady spots in your garden
Fresh water – ensure this is refreshed regularly each day
Use pet-friendly sunscreen on light-haired breeds – tips of ears and the nose are important areas
Let your cat out to explore in the early morning and late evening when temperatures are lower
Top tips – in your house
Water – provide multiple water bowls around the house in areas that can be easily reached
Keep your cat out of hot rooms like conservatories, sun rooms and greenhouses
Open windows slightly to allow a gentle breeze throughout the house
Create a cool room if you can.  Encourage your cat to spend time in a cooler room with their favourite toys, feeders, cool blankets, etc.