ForTheBreed
Needs heat management Giant

Are Leonbergers good in hot weather?

Leonbergers were built for cold climates, so a hot spell asks for real care. They can be kept comfortable, but not by accident.

Heat tolerance
With care
Muzzle
Normal
Coat
Thick double
Size
Giant
Energy
Medium
Weight
40–75kg

How Leonbergers handle the heat

The cooling problem

Leonbergers carry a dense double coat evolved to trap warmth. It insulates against heat as well as cold to a point, but in high temperatures it works against them, and humidity makes it worse. The coat is a heat store they cannot simply shed on a hot day.

Practical summer management

Shift walks to early morning and late evening, and skip them entirely on the hottest days. Carry water on every outing, provide deep shade in the garden, and give access to cool floors indoors. The pavement test is simple: press the back of your hand to the ground for seven seconds, and if it is too hot for your hand it is too hot for paws.

Never shave a double coat to "cool the dog down". It removes the insulating layer that also blocks heat and can leave the skin exposed to sunburn. Regular brushing to clear dead undercoat is the right approach.

Exercise in warm weather

Leonbergers have moderate exercise needs, which makes summer easier to manage. It is straightforward to shift their activity into the cooler hours without leaving them under-exercised.

What temperature is too hot?

There is no single cutoff, because humidity, age, weight, and coat all matter. As a guide, take extra care above 20C and treat anything above 25C as high risk for a heavy-coated breed like this. When in doubt, keep them home and cool.

Personality and summer walks

Bred to resemble a lion, acts like a giant lap dog. The Leo is affectionate, majestic, and costs a fortune to own.

A gentle temperament tends to slow down sensibly in hot weather, resting rather than pushing through discomfort the way a more driven dog often will. A loyal dog keeps pace with its owner on a hot walk rather than dropping back into the shade on its own, so the owner has to be the one who decides the outing is over. Intelligent dogs learn to seek out cool floors and shaded spots on their own after experiencing a hot day, adapting their behaviour without much prompting from an owner.

Heat, training and behaviour

Teaching a dog to settle in the shade

Leonbergers generally learn a reliable "settle" or "go to your bed" command without much difficulty, which is useful on a hot day when the goal is to keep the dog resting in a cool spot rather than pacing about.

Barking and restlessness in a heatwave

Leonbergers rarely bark much, so discomfort in hot weather is more likely to show as excessive panting or reluctance to move than as noise.

Family and other pets in a heatwave

Leonbergers generally do well around children, though hot weather adds a job for parents: making sure excitable play with kids in the garden does not run on longer than the dog can safely handle. They typically share a house with a cat without issue, and both species tend to gravitate to the same cool spots during a heatwave.

Cost and ageing in hot weather

Leonbergers typically live 8 to 9 years, and older dogs of any breed regulate heat less efficiently than a fit adult, so senior leonbergers need shorter, cooler outings and closer watching during a heatwave. Insurance for a Leonberger in the UK typically costs about £70 to £150 a month, and heatstroke is exactly the kind of sudden, serious vet visit that cover exists for. A Leonberger puppy, usually priced around £1500 to £3000, overheats more easily than an adult dog as well, since puppies have less developed temperature regulation and tire without always showing it.

Full guide to Leonbergers

Read the complete Leonberger guide →

More questions about Leonbergers

Do they shed?Do they bark a lot?Are they good with kids?Are they good with cats?Are they easy to train?Are they hypoallergenic?Are they good family dogs?Are they aggressive?How long do they live?How much exercise?How much do they cost?Good for first-time owners?Good for seniors?Good in cold weather?Good guard dogs?Good running dogs?Can they be left alone?Good with other dogs?Good apartment dogs?Easy to groom?