A sunny afternoon can become dangerous far more quickly than many owners expect. Dogs in hot weather cannot cool themselves as efficiently as people do, and a walk, car journey or warm conservatory that seems manageable to us may put serious strain on them. Planning ahead is the most effective way to keep them comfortable and prevent an emergency.

Why dogs struggle in hot weather

Dogs mainly lose heat by panting, with a small amount of cooling through their paw pads. They do not sweat over their skin as humans do. When the surrounding air is hot, humid or poorly ventilated, panting becomes less effective and their body temperature can rise rapidly.

A thick coat is not always the deciding factor. A fit, short-coated dog can overheat after chasing a ball in full sun, while a well-managed double-coated dog may cope well resting in cool shade. Age, fitness, weight, health conditions, activity level and breed all matter.

Some dogs need particularly close attention: flat-faced breeds such as Pugs, French Bulldogs and Bulldogs; puppies and elderly dogs; overweight dogs; dogs with heart or breathing conditions; and dogs recovering from illness or surgery. Dark coats can also absorb more heat in direct sunlight. For these dogs, it is sensible to be more cautious rather than waiting for obvious signs of discomfort.

Walking dogs in hot weather safely

The best change most owners can make is moving walks to the early morning or later evening, when temperatures and pavement surfaces have cooled. On very hot days, a shorter lead walk for toileting and gentle sniffing may be enough. Missing a long walk for a day is safer than pushing through unsuitable conditions.

Pavements, tarmac, artificial grass and sand hold heat. Place the back of your hand on the surface for several seconds. If it is uncomfortable for your hand, it is too hot for paws. Paw pad burns can be painful and may not be immediately obvious until a dog starts licking their feet, limping or refusing to walk.

Choose shaded routes with grass where possible, carry water and offer small drinks regularly. Avoid repetitive ball throwing, running beside a bike and energetic games. Excitement can mask early fatigue, particularly in dogs that will keep going simply because they enjoy the activity.

Swimming can provide useful exercise, but it is not risk-free. Use clean, safe water, supervise closely and prevent a tired dog from repeatedly jumping in or swimming long distances. Rinse off salt water, algae or dirty water afterwards, and make sure your dog has a shaded place to rest. Never rely on a swim to make an unsafe midday walk safe.

Make the home and garden cooler

Fresh drinking water should be available in more than one place, especially in multi-dog homes or gardens. Change it regularly, keep bowls out of direct sun and use a sturdy, tip-resistant bowl outdoors. Some dogs prefer a larger bowl where the water stays cooler for longer.

Provide shade that lasts through the day rather than a spot that is shaded only in the morning. Indoors, close curtains or blinds on the sunny side of the house and allow air to move through safely. Fans can improve comfort, though they do not lower a dog’s body temperature on their own. Cooling mats, damp towels placed down for the dog to choose, and access to a cool tiled floor can all help.

Do not force a dog to lie on a cooling mat or wrap them in a wet towel. Some will move away if they feel too cold or dislike the texture. Give them options and let them settle where they are comfortable. Regular grooming also helps remove loose undercoat and improves air flow, but shaving a double-coated breed is not automatically the answer. Their coat can provide insulation and protection from sunburn, so ask a qualified groomer or vet for breed-specific advice before clipping.

Garden time needs supervision too. A dog left outside may not move into the shade or drink enough, especially if they are distracted by visitors, wildlife or play. Check that sheds, greenhouses and conservatories are shut or inaccessible. These spaces can become dangerously hot within minutes.

Never leave a dog in a car

A parked car is not a safe place for a dog in warm weather, even for a short errand. Opening the windows, parking in shade or leaving water in the vehicle does not make it safe. Temperatures inside can rise quickly, while sun and shade move as the day progresses.

If travel is necessary, use a well-ventilated crate or harness, take water, travel during cooler parts of the day and stop for comfort breaks in shade. Do not leave your dog unattended while you pay for fuel, collect shopping or use a service station. Plan the journey so one person can remain with the dog if stopping is unavoidable.

If you see a dog showing distress in a hot car, contact the police on 999 if there is an immediate risk to life, or 101 where the situation is not an emergency. Note the vehicle registration, location and the dog’s condition. Do not put yourself at risk or damage a vehicle unless advised by emergency services, but act promptly.

Signs of overheating and heatstroke

Panting after activity is normal. Panting that is excessive, noisy, rapid or does not settle after rest is not. Early action is vital because heatstroke can develop fast and may cause organ damage.

Watch for heavy drooling, bright red or very pale gums, restlessness, weakness, vomiting, diarrhoea, confusion, stumbling, collapse or seizures. A dog may seek cool surfaces, refuse to move or appear unusually quiet. Flat-faced dogs may show worsening snoring or strained breathing before other signs become clear.

What to do if your dog overheats

Move your dog immediately into a cool, shaded and well-ventilated area. Offer small amounts of cool drinking water if they are alert and able to swallow, but do not force water into their mouth. Begin cooling with cool tap water over the body, concentrating on the underside, legs and paws, while allowing air to circulate around them.

Do not use ice, ice-cold water or an ice bath. Extreme cold can constrict blood vessels and make cooling less effective. Avoid covering the dog completely with wet towels, as trapped heat can remain against the body. A wet towel beneath or loosely draped for a brief period is different, but it should be changed as soon as it becomes warm.

Phone your vet straight away and follow their instructions, even if your dog appears to improve. Heatstroke is always an emergency, and complications can occur after a dog has cooled down. If your usual practice is closed, contact the out-of-hours veterinary service without delay. Do not give human medicines, electrolyte drinks or pain relief unless a vet has specifically told you to do so.

Adjust food, play and routine

Most healthy adult dogs do not need a major food change during a short warm spell, but they may be less hungry at their usual mealtime. Feeding in the cooler morning or evening can be more comfortable. Keep food stored correctly, remove uneaten wet food promptly and wash bowls often, as warm conditions encourage bacterial growth.

Use mental exercise when outdoor activity must be reduced. Short scent games in a cool room, simple training, a stuffed food toy prepared with their normal food allowance, or calm grooming can keep a dog occupied without raising their temperature. If you have several animals to care for, setting out water, shade and feed routines before the hottest part of the day makes the whole household easier to manage.

Hot weather asks for sensible compromises. Your dog may be keen to join in, but their enthusiasm is not a reliable measure of safety. A cool place to rest, water within reach and a quieter routine are often the best care you can provide until the temperature drops.