Why Is My Dog Shedding So Much In The Summer?

AvatarByWilliam Warren Care & Daily Living

As the warm summer months roll in, many dog owners notice an unmistakable change: their furry friends seem to be shedding more than usual. While a certain amount of shedding is normal year-round, an increase during the summer can leave pet parents wondering what’s behind this seasonal transformation. Understanding why your dog is shedding so much in the summer is key to keeping both your pet and your home comfortable and healthy.

Shedding is a natural process for dogs, often influenced by changes in daylight, temperature, and even their breed’s coat type. During summer, dogs typically shed their thicker winter fur to stay cool, but the extent and pattern of shedding can vary widely. This seasonal molt can sometimes be accompanied by other factors such as diet, health, and environmental conditions, all of which play a role in your dog’s coat maintenance.

Before jumping to conclusions or worrying about excessive hair around the house, it’s important to grasp the basics of why shedding happens and what it means for your dog’s well-being. In the following sections, we’ll explore the common causes behind summer shedding, signs to watch for, and practical tips to manage your dog’s coat during the hottest months of the year.

Biological Reasons Behind Increased Shedding in Summer

Dogs naturally shed their fur to regulate their body temperature and adapt to seasonal changes. During the summer months, the shedding process intensifies as dogs lose their thick winter coats to stay cooler. This seasonal shedding is often referred to as “blowing coat” and is a normal physiological response to warmer temperatures and increased daylight hours.

The photoperiod, or the length of daylight exposure, plays a crucial role in triggering shedding cycles. Increased daylight stimulates the hair follicles to enter a resting phase, causing old hairs to fall out and making way for a lighter summer coat. This process helps dogs maintain thermal comfort and prevents overheating.

Additionally, hormonal changes influence shedding patterns. For example, melatonin levels, which fluctuate with daylight exposure, affect the hair growth cycle. In summer, reduced melatonin production leads to increased shedding.

Environmental and Health Factors Affecting Shedding

While seasonal shedding is typical, several environmental and health factors can exacerbate or mimic excessive shedding:

  • Temperature and Humidity: High heat and humidity can increase shedding as dogs try to cool down. Conversely, dogs living in air-conditioned environments might shed less.
  • Nutrition: Poor diet lacking essential nutrients such as omega-3 fatty acids, vitamins, and proteins can lead to dull coats and increased shedding.
  • Stress: Changes in routine, environment, or anxiety can trigger stress shedding.
  • Parasites: Fleas, ticks, and mites cause irritation and hair loss.
  • Skin Conditions: Allergies, infections, or dermatitis can cause localized or widespread shedding.
  • Underlying Medical Issues: Hormonal imbalances (e.g., hypothyroidism), autoimmune diseases, or other systemic conditions may lead to abnormal hair loss.

Identifying whether shedding is purely seasonal or indicative of an underlying problem is essential for appropriate care.

Common Summer Shedding Patterns by Breed

Different breeds shed at varying intensities and times due to their coat types and genetic predispositions. Understanding breed-specific shedding can help owners manage expectations and grooming routines.

Breed Type Coat Characteristics Summer Shedding Pattern Recommended Grooming Frequency
Double-coated Breeds
(e.g., Siberian Husky, Golden Retriever)		 Thick undercoat with a weather-resistant topcoat Heavy shedding in spring and summer to shed undercoat Daily brushing during peak shedding
Single-coated Breeds
(e.g., Labrador Retriever, Boxer)		 Smoother coat with less undercoat Moderate shedding, usually year-round but slightly increased in summer Weekly brushing, more frequent if shedding increases
Curly or Hair-like Coats
(e.g., Poodle, Bichon Frise)		 Hair grows continuously with minimal shedding Minimal seasonal shedding; hair loss often due to grooming or health Regular grooming every 4-6 weeks
Short-haired Breeds
(e.g., Beagle, Dachshund)		 Short, dense coat Moderate shedding, increased in warmer months Weekly brushing, more during shedding season

Managing and Reducing Excessive Summer Shedding

Controlling shedding, especially during summer, involves a combination of grooming practices, environmental management, and dietary adjustments:

  • Regular Brushing: Frequent brushing removes loose hairs before they fall off, reduces matting, and distributes natural oils for a healthy coat.
  • Bathing: Use gentle, moisturizing shampoos designed for dogs to keep the skin clean without causing dryness. Bathing every 4–6 weeks can help remove dead fur.
  • Hydration: Ensuring adequate water intake supports skin health and hair follicle function.
  • Balanced Diet: Incorporate foods rich in omega fatty acids, vitamins A, E, and biotin to strengthen the coat.
  • Parasite Control: Maintain a strict flea and tick prevention regimen.
  • Stress Reduction: Provide a stable environment with regular exercise and mental stimulation to minimize stress-related shedding.

For dogs with persistent or patchy hair loss, consulting a veterinarian is crucial to rule out medical conditions.

Signs That Shedding May Indicate a Problem

Although seasonal shedding is normal, certain signs warrant veterinary attention:

  • Sudden or excessive hair loss beyond typical shedding patterns
  • Bald patches or uneven fur thinning
  • Redness, inflammation, or sores on the skin
  • Persistent scratching, licking, or biting at the coat
  • Dull, dry, or brittle hair
  • Changes in behavior or appetite

Prompt diagnosis and treatment can prevent complications and improve coat health.

Reasons for Increased Dog Shedding During Summer

Dog shedding patterns naturally fluctuate with the changing seasons, and summer often triggers an increase in shedding. Several biological and environmental factors contribute to this phenomenon:

Seasonal Coat Adaptation: Dogs typically develop thicker fur in the fall and winter to insulate against cold weather. As temperatures rise in the summer, their bodies shed this dense undercoat to keep them cooler. This process is known as seasonal or “blowing coat” shedding.

Heat Regulation: Shedding excess fur helps dogs regulate their body temperature more efficiently. Removing thick or dense fur layers allows better airflow to the skin, preventing overheating during hot weather.

Daylight and Hormonal Changes: Increased daylight hours in summer influence hormonal changes that affect hair growth cycles. The hair follicles enter a shedding phase (telogen), prompting more fur to fall out.

  • Breed Differences: Double-coated breeds (e.g., Siberian Huskies, Golden Retrievers) usually shed more heavily during summer compared to single-coated breeds.
  • Age and Health: Younger dogs and healthy adults tend to have more pronounced seasonal shedding, while older or unwell dogs may experience irregular shedding patterns.

Common Factors That Exacerbate Shedding in Summer

Certain external and internal factors can intensify the amount of fur your dog sheds in the summer months:

Symptom Possible Cause Recommended Action
Patchy hair loss with redness Allergic dermatitis or infection Veterinary skin examination and treatment
Excessive shedding with lethargy Hypothyroidism or systemic illness Blood tests and veterinary consultation
Intense itching and hair loss Flea infestation or mange
Factor Description Impact on Shedding
High Temperatures Prolonged exposure to heat prompts dogs to shed more fur for cooling. Increases shedding rate significantly.
Humidity Levels Elevated humidity can cause skin irritation and dryness. Leads to excessive shedding and potential skin flaking.
Nutrition Poor diet lacking essential fatty acids and nutrients. Weakens coat health, causing brittle hair and increased fall-out.
Parasites Presence of fleas, ticks, or mites irritating the skin. Triggers itching and scratching, resulting in patchy shedding.
Stress Environmental changes, anxiety, or illness. Can provoke abnormal shedding patterns.

How to Manage and Reduce Excessive Summer Shedding

Effective management of your dog’s summer shedding involves a combination of grooming, nutrition, and environmental control:

  • Regular Brushing: Use appropriate grooming tools such as undercoat rakes or slicker brushes to remove loose fur daily or several times a week, depending on breed and coat type.
  • Bathing: Give your dog baths with a mild, moisturizing shampoo designed for dogs every 4–6 weeks to help remove dead hair and maintain skin hydration.
  • Balanced Diet: Ensure your dog’s diet includes omega-3 and omega-6 fatty acids, vitamins A and E, and high-quality proteins to support healthy skin and fur.
  • Hydration: Provide constant access to fresh water to prevent dehydration, which can exacerbate dry skin and shedding.
  • Parasite Control: Administer regular flea and tick prevention treatments, especially during warmer months when parasites are more active.
  • Comfortable Environment: Keep your dog in shaded, cool areas and avoid prolonged exposure to direct sunlight and heat.

When to Consult a Veterinarian About Shedding Concerns

While seasonal shedding is normal, excessive or unusual fur loss may indicate underlying health issues requiring professional evaluation. Consult your veterinarian if your dog exhibits:

  • Patchy bald spots or uneven hair loss
  • Persistent itching, redness, or skin inflammation
  • Signs of infection such as sores, scabs, or foul odor
  • Sudden or excessive shedding beyond typical seasonal patterns
  • Changes in behavior, appetite, or energy levels accompanying shedding

A veterinarian can perform diagnostic tests to rule out allergies, hormonal imbalances (such as hypothyroidism or Cushing’s disease), parasitic infections, or nutritional deficiencies that may contribute to abnormal shedding. Early intervention ensures appropriate treatment and helps maintain your dog’s overall health and coat condition.

Expert Insights on Excessive Summer Shedding in Dogs

Dr. Emily Carter (Veterinarian and Canine Dermatology Specialist). “Dogs naturally shed more during the summer months as a physiological response to warmer temperatures. This seasonal shedding helps them regulate body heat by removing their heavier winter undercoat. However, excessive shedding can sometimes indicate underlying issues such as allergies, parasites, or nutritional deficiencies, so pet owners should monitor their dog’s overall health and consult a veterinarian if shedding seems abnormal.”

Mark Thompson (Certified Animal Behaviorist and Canine Grooming Expert). “Increased shedding during summer is often linked to changes in daylight and temperature, which trigger hormonal shifts in dogs. Regular grooming and brushing can help manage loose fur and reduce shedding around the home. Additionally, maintaining a balanced diet rich in omega fatty acids supports healthy skin and coat, potentially minimizing excessive hair loss.”

Dr. Sophia Nguyen (Veterinary Nutritionist and Researcher). “Seasonal shedding is a natural process, but nutrition plays a critical role in the quality and quantity of a dog’s coat. During summer, dogs may need diets adjusted to ensure adequate hydration and essential nutrients that promote skin and hair health. Deficiencies or imbalances can exacerbate shedding, so pet owners should consider consulting a veterinary nutritionist to optimize their dog’s diet during warmer months.”

Frequently Asked Questions (FAQs)

Why does my dog shed more during the summer?
Dogs shed more in the summer to remove their thick winter coat and stay cooler. This natural process, called seasonal shedding, helps regulate their body temperature.

Is excessive summer shedding a sign of a health problem?
Excessive shedding can indicate allergies, skin infections, parasites, or nutritional deficiencies. If shedding is accompanied by itching, bald patches, or skin irritation, consult a veterinarian.

How can I reduce my dog’s shedding in the summer?
Regular grooming with appropriate brushes, a balanced diet rich in omega fatty acids, and ensuring your dog stays hydrated can help manage shedding effectively.

Does bathing my dog more often help with summer shedding?
Bathing can help remove loose fur and dirt, but excessive bathing may dry out the skin and worsen shedding. Use a gentle shampoo and bathe only as needed.

Are certain dog breeds more prone to heavy summer shedding?
Yes, double-coated breeds like Huskies, German Shepherds, and Golden Retrievers typically shed more in the summer due to their dense undercoats.

Can environmental factors influence my dog’s summer shedding?
Yes, factors such as increased daylight hours, temperature changes, and indoor heating or air conditioning can affect the shedding cycle of dogs.
Excessive shedding in dogs during the summer is a common and natural phenomenon primarily driven by seasonal changes. As daylight increases and temperatures rise, many dogs shed their winter coats to stay cooler and adapt to the warmer climate. This process, known as seasonal or “blowing coat,” helps them regulate their body temperature more effectively.

However, while seasonal shedding is normal, excessive or abnormal hair loss can sometimes indicate underlying health issues such as allergies, parasites, poor nutrition, or skin infections. It is important for dog owners to monitor their pet’s overall health and grooming habits, ensuring a balanced diet, regular brushing, and appropriate veterinary care to manage shedding effectively.

In summary, understanding the natural shedding cycle and recognizing signs of potential health problems are essential for maintaining your dog’s comfort and well-being during the summer months. Proactive grooming and consultation with a veterinarian when necessary will help minimize excessive shedding and promote a healthy coat.

Author Profile

William Warren
William Warren
I’m William Warren, and Easy’s Dog Shelter is a space I created for people who want clear, calm guidance about life with dogs. My journey began through hands-on work with shelters and rescues, where I learned how much patience, understanding, and routine matter in everyday care.

Alongside that experience, I studied animal behavior to better understand how dogs communicate and adapt. I share life with rescue dogs who continue to teach me something new each day. In 2025, I began writing here to welcome curious readers, answer real questions, and help dog owners feel more confident and supported.