5 Skin Issues That Peak in Late Summer in Dogs

Late summer brings longer days, rising temperatures, hot weather, and warm temperatures, along with plenty of opportunities for spending time outdoors and outdoor adventures with your dog. But while you’re soaking up the sun, your dog’s skin could be under siege. Skin issues are one of the most common health problems dogs experience during this time of year. Increased humidity, extended time outdoors, peak allergen levels, and heightened insect activity all contribute to a seasonal spike in skin-related concerns.

In this blog, you’ll learn:

• Why late summer is a hotspot for dog skin problems
• The five most common late-summer skin conditions in dogs
• How to spot signs early and act fast
• Preventive steps for long-term skin health
• How Scenthound supports your dog’s wellness journey

Why Late Summer Causes Skin Issues in Dogs

Dogs are naturally more exposed to skin irritants during late summer due to their lifestyle, anatomy, and environmental conditions. While many dog parents think itchy skin is just “part of being a dog,” persistent or worsening symptoms are often signs of deeper issues. Let’s take a closer look at the seasonal triggers.

1. Environmental Exposure
Dogs spend more time outdoors in the summer—running through grass, rolling in the yard, or lying in sun-soaked spots. This increased exposure brings them into contact with pollen, weeds, mold spores, and other allergens that can trigger contact dermatitis or atopic dermatitis.

2. Heat and Humidity
High temperatures combined with humid weather create a perfect environment for moisture to get trapped against the skin, leading to bacterial or yeast overgrowth, especially in areas where airflow is restricted (like under collars, in skin folds, or behind ears).

3. Peak Insect Activity
Fleas, ticks, mosquitoes, and other biting insects are at their most active during the late summer months. These pests can not only bite but also transmit allergens and irritants that can wreak havoc on a dog’s skin.

4. UV Radiation
Many dog breeds, especially those with light-colored or thin coats, are prone to sunburn or photosensitivity reactions. Prolonged sun exposure can cause damage to unprotected skin, particularly on the nose, ears, and belly.

The Role of the Immune System in Your Dog’s Skin Health

Your dog’s immune system is the first line of defense against a wide range of skin diseases. When the immune system is functioning well, it helps protect your dog from developing skin rashes and irritated skin—problems that are frequently observed in warmer seasons.

However, genetic disorders, exposure to the sun, and changing climatic factors can all impact how effectively your dog’s immune system guards against threats, leading to an increased prevalence of skin diseases like atopic dermatitis, especially as temperatures rise.

1. Seasonal Allergies and Atopic Dermatitis

Atopic dermatitis is a genetically inherited condition that affects many dogs, especially breeds like Golden Retrievers, Bulldogs, and Terriers. Late summer sees a rise in airborne allergens like grass pollens, mold, and ragweed, all of which can exacerbate symptoms.

Common signs:

• Persistent scratching, especially around the face, feet, ears, and belly
• Chewing or licking paws
• Red or inflamed skin
• Recurrent ear infections

How to support your dog:

• Keep windows closed during high pollen days
• Use an air purifier indoors
• Bathe your dog routinely
• Establish a monthly wellness routine focused on skin health

Mild cases of atopic dermatitis may be managed with at-home care, but more severe or persistent cases require veterinary attention.

2. Plant-Related Irritation and Contact Dermatitis

Certain plants—like ragweed, poison ivy, or Bermuda grass—can cause irritation leading to itchy, inflamed skin. Exposure combined with warm, damp conditions increases the risk of irritation.

What to watch for:

• Red, raised bumps or dry, flaky patches
• Sudden itching after walks or playtime in the yard
• Crusting, small blisters, or scaly skin

Steps to prevent irritation:

• Learn which local plants cause skin irritation
• Avoid letting your dog walk through dense brush
• Wash or wipe your dog after outdoor time

If your dog has a history of skin sensitivity, keep walks limited to paved areas during high-allergen seasons.

3. Hot Spots and Heat Rash (Acute Moist Dermatitis)

Hot spots are one of the most urgent skin issues dogs face in summer. These moist, inflamed lesions are typically caused by a combination of self-trauma and bacterial infection.

Early symptoms include:

• Localized redness
• Hair loss
• Sticky or weeping sores

What contributes to hot spots:

• Water trapped under the fur
• Flea bites
• Tight-fitting gear

Treatment tips:

• Carefully clip the fur around the affected area
• Clean the area with antiseptic
• Use dog-safe topical medication

Heat rash can also develop when sweat glands become blocked, leading to red, bumpy skin and discomfort.

4. Bacterial and Yeast Infections

The late summer heat leads to more sweating and moisture on the skin, creating the perfect storm for microbial overgrowth, especially in breeds with skin folds or thick coats.

Bacterial infection signs:

• Inflamed skin
• Discharge
• Hair loss

Yeast infection signs:

• Musty odor
• Greasy skin
• Discoloration

Secondary infection is common, so prompt attention is important. If you notice any of these symptoms, it may be time for a Vet visit.

5. Flea-Related Dermatitis and Insect Bite Reactions

Fleas can cause serious skin inflammation and trigger allergic reactions in many dogs. Flea allergy dermatitis is a leading cause of late-summer itching and discomfort.

Symptoms of flea-related issues:

• Hair loss at the base of the tail
• Small red bumps
• Constant biting

Tips for prevention:

• Stick to a year-round flea prevention regimen
• Wash bedding and vacuum regularly
• Do regular skin checks after walks

Bonus: Less Common but Serious Late-Summer Skin Issues

Sunburn
Light-coated breeds are at greater risk, especially on the nose, ears, and belly. Look for dry, red, or peeling skin after sun exposure.

Photosensitivity Reactions
Certain medications can make dogs more sensitive to sunlight.

Skin Tumors
Monitor any new lumps, especially in older dogs.

How to Recognize, Diagnose, and Treat Skin Issues in Dogs

Watch for symptoms like red rash, mild swelling, and an itchy rash. Consult a veterinarian for diagnosis and treatment, including topical steroids or antibiotics for severe cases.

Scenthound Helps You Stay Ahead of Summer Skin Issues

At Scenthound, our focus is on preventive care, addressing the five key areas of dog wellness: Skin, Coat, Ears, Nails, and Teeth.

When to Seek Veterinary Care for Your Dog’s Skin Problems

If you notice unusual rashes or symptoms like difficulty breathing, seek veterinary care immediately. Prompt attention can prevent complications.

Finish Summer Strong!

Late summer may bring skin problems in dogs, but with the right information and a proactive approach, it doesn’t have to be a season of discomfort.