When Is It Too Hot to Walk Your Dog?

Warm weather can be enjoyable for both dogs and owners, but high temperatures can quickly become dangerous during walks. Dogs are far more vulnerable to overheating than many people realise, and every year countless dogs suffer from heat exhaustion or heatstroke after being exercised in conditions that were simply too hot.

Understanding when temperatures become unsafe, recognising the risks and knowing how to protect your dog are essential parts of responsible dog ownership during warmer months.

Why Hot Weather Is Dangerous for Dogs

Dogs regulate body temperature very differently from humans.

Unlike people, dogs do not sweat effectively through their skin. Instead, they mainly cool themselves by:

• Panting

• Releasing heat through their paw pads

• Seeking shade or cooler surfaces

During hot weather or exercise, these cooling methods can quickly become overwhelmed, especially if humidity is high or the dog is physically active.

So, When Is It Too Hot?

There is no single temperature that is safe for every dog, because factors such as breed, age, fitness and humidity all play a role.

However, general guidance suggests:

• Below 20°C is usually safer for most healthy dogs

• Around 20–23°C can begin to pose risks, particularly for vulnerable dogs

• Around 24°C and above can become dangerous for many dogs during exercise

• Around 28°C and above carries a very high risk of heatstroke

Direct sunlight and humidity can make conditions far more dangerous than the temperature alone suggests.

Why Humidity Matters

Humidity makes it harder for dogs to cool themselves through panting.

When the air is humid:

• Moisture evaporates less effectively

• Body heat becomes trapped

• Overheating develops more quickly

Warm, humid weather can therefore be more dangerous than dry heat at the same temperature.

Dogs Most at Risk in Hot Weather

Some dogs are significantly more vulnerable to overheating.

Higher-risk groups include:

• Flat-faced breeds such as Bulldogs, Pugs and French Bulldogs

• Puppies

• Elderly dogs

• Overweight dogs

• Thick-coated breeds

• Dogs with heart or breathing problems

These dogs may struggle even in moderately warm conditions.

Flat-Faced Breeds and Heat Risk

Flat-faced, or brachycephalic, breeds are especially vulnerable because their shortened airways reduce their ability to cool themselves effectively.

These dogs may:

• Pant less efficiently

• Overheat more quickly

• Develop breathing distress during exercise

Even short walks in mild heat can become dangerous for these breeds.

The Danger of Hot Pavements

Air temperature is not the only concern during hot weather.

Pavements and roads can become extremely hot in direct sunlight and may burn your dog’s paw pads.

Asphalt and concrete absorb heat rapidly and can remain dangerously hot even after air temperatures begin to cool slightly.

How to Test Pavement Temperature

A simple way to check surfaces is the “five-second rule”.

Place the back of your hand on the pavement for five seconds.

If it feels too hot for your skin, it is too hot for your dog’s paws.

Signs Your Dog Is Overheating

Recognising early signs of overheating is essential.

Early symptoms include:

• Excessive panting

• Drooling

• Slowing down during walks

• Seeking shade constantly

• Red gums or tongue

At this stage, immediate cooling and rest are important.

Severe Signs of Heatstroke

If overheating progresses, signs may include:

• Vomiting or diarrhoea

• Weakness or collapse

• Confusion or disorientation

• Seizures

• Loss of consciousness

Heatstroke is a medical emergency and can become fatal very quickly.

The Best Times to Walk Your Dog

During warm weather, it is usually safest to walk dogs:

• Early in the morning

• Later in the evening

These times are typically cooler and reduce the risk of overheating and paw burns.

Midday walks during hot weather should generally be avoided.

Shorter Walks May Be Safer

On warmer days, reducing exercise intensity can help lower risk.

Instead of long or strenuous walks:

• Take shorter walks

• Allow plenty of rest breaks

• Avoid vigorous games such as fetch

Mental stimulation indoors can also help tire dogs safely.

Always Bring Water

Hydration is extremely important during warm weather.

When walking your dog:

• Carry fresh water

• Offer regular drinking opportunities

• Take breaks in shaded areas

Dehydration increases the risk of overheating significantly.

Avoid Overexertion

Dogs often continue exercising even when they are becoming dangerously hot.

Excitement, chasing balls or playing with other dogs can push them beyond safe limits without obvious warning.

Owners should monitor activity levels carefully and stop exercise before overheating develops.

Cooling Products and Shade

Cooling aids may help some dogs during warm weather.

These can include:

• Cooling mats

• Cooling vests

• Portable shade

• Fans or airflow in resting areas

However, these products do not make extreme heat safe for exercise.

Never Force Exercise in Hot Weather

Some dogs are highly energetic and eager to walk regardless of conditions.

However, owners should never force exercise when temperatures are unsafe.

Skipping a walk during extreme heat is far safer than risking heatstroke.

Indoor Alternatives for Hot Days

When temperatures are too high, indoor activities can help provide stimulation safely.

Options include:

• Puzzle toys

• Training exercises

• Scent games

• Gentle indoor play

Mental enrichment can help reduce boredom without overheating risks.

What to Do If Your Dog Overheats

If you suspect your dog is overheating:

• Move them into shade immediately

• Offer cool water

• Use cool, not ice-cold, water to lower body temperature

• Contact your vet urgently

Rapid action is essential.

Prevention Is Always Better Than Treatment

Heatstroke can develop quickly and may become fatal even with treatment.

Preventative measures such as:

• Avoiding walks during peak heat

• Monitoring vulnerable dogs carefully

• Providing water and shade

• Reducing exercise intensity

are the safest way to protect your dog.

Conclusion

Hot weather can become dangerous for dogs far more quickly than many owners realise. While some healthy dogs cope reasonably well in mild warmth, temperatures around 24°C and above can become unsafe for many dogs, particularly when combined with humidity, direct sunlight or vigorous exercise.

Flat-faced breeds, elderly dogs, puppies and overweight dogs are especially vulnerable to overheating and heatstroke.

The safest approach during hot weather is to walk dogs during cooler times of day, avoid hot pavements, reduce exercise intensity and always monitor for signs of overheating.

When in doubt, it is always safer to skip or shorten a walk than risk your dog developing heatstroke.