Why Dog Walks Are Dangerous in Warm Weather
June 22, 2026
With the heatwave bringing temperatures of 28 – 36°C this week in Surrey, we’re re-sharing some of our top advice articles on how to avoid heatstroke in pets. As always, we’re here if you need us in an emergency or for general advice and pet care – call 0208 979 1384.
When the temperature rises in Surrey, it’s important to think twice before heading out for a walk with your dog. Even on seemingly pleasant days, perhaps when it’s below 20 degrees (Celsius) but full sun, or it’s mid-high 20’s but cloudy, the vets at Molesey Vets’ warn that warm weather can quickly put dogs at risk of a deadly heat-related illness – heatstroke.
Call us in an emergency on 0208 979 1384.
Why is the heat such a problem for dogs
Molesey Vets’ team advise that unlike humans, dogs can’t cool down by sweating.
Dogs only release a small amount of heat through the pads on their paws and rely mostly on panting to regulate their body temperature. This means they can overheat much faster than we realise – especially during exercise. According to the RSPCA, dogs are up to ten times more likely to suffer from heatstroke while out on a walk than from being left in a hot car. Both are dangerous situations that can become life-threatening very quickly.
Molesey Vets’ team are sharing signs your dog may be overheating:
- Heavy panting
- Difficulty breathing
- Excessive drooling
- Lethargy or confusion
- Vomiting or even collapse
If your dog shows any of these symptoms, move them to a shaded, cool place right away. Our vets in East Molesey advise pouring cool (not ice-cold) water over your dog’s body, avoiding the head, and seeking veterinary help immediately. Never lay a damp towel over your dog as this can trap the heat in.
Molesey Vets’ emergency number is 0208 979 1384.
See all our emergency information
Read more about caring for your dog in our guide
How hot is too hot to walk dogs?
As a general guide, Molesey Vets’ team advise that 24°C (75°F) and above is considered too hot for a safe walk for many dogs. In fact, heat-related problems can start to creep in even from 20°C (68°F), depending on your dog’s breed, age, and health.
- Below 20°C (68°F): Usually safe, though you should still consider your dog’s individual needs – full sun at lower temperatures can still be problematic for some dogs.
- 20–23°C (68–74°F): Getting warmer – there’s a moderate risk of overheating, especially during energetic play.
- 24–27°C (75–81°F): High risk of heatstroke for lots of dogs. It’s safer to skip the walk or keep it very short and gentle.
- 28°C (82°F) and up: Danger zone! It’s best to stay indoors or stick to shady garden time.
What else should you keep in mind?
- Breed and health: Flat-faced breeds (like pugs and bulldogs), puppies, older dogs, and pets with ongoing health issues are especially vulnerable in the heat.
- Exercise level: A gentle stroll is one thing – but fetch and fast-paced walks can quickly cause dogs to overheat.
- Pavement heat: Surfaces can burn paws even when the air feels okay. Try the ‘hand test’ – if it’s too hot for your hand, it’s too hot for your dog.
- Sun and humidity: A breeze and some shade can make a big difference. On still, humid days, even lower temperatures can feel intense.
- Delays: It’s easy to lose track of time when you’re chatting to friends or passers by – make time for a doggy refreshment break or be mindful of moving on
When is the best time to walk dogs in hot weather?
On hot days in Surrey, early morning or late evening walks are safest, and sometimes, it’s best to skip the walk entirely. A relaxed indoor play session or a shaded potter in the garden can be just as enjoyable – and far safer
More tips for safe walk dogs in hot weather
- Pick shady routes and avoid long stretches in direct sun.
- Carry water for both you and your dog.
- Watch for signs of overheating like panting, drooling, slowing down or seeming confused.
- Keep walks short and sweet – or give them a miss altogether if it’s sweltering.
- Apply pet safe sunscreen, especially on light-coloured dogs and areas with less or no fur
- When in doubt, it’s always better to be cautious.
If you have any concerns about your dog’s health in the heat, get in touch with our vets in East Molesey right away on 0208 979 1384.
