Your Horse’s Summer Skin Stressors

Don’t let the warmer weather cause skin and coat issues.

As temperatures climb and riding schedules ramp up, summer presents its unique set of challenges for your horse’s skin. Long hours in the sun, increased sweating, frequent bathing, and exposure to flies and allergens can leave equine skin vulnerable to irritation, infection, and discomfort. Understanding common warm-weather skin issues—and how to prevent them—can keep your horse happy, healthy, and comfortable all summer.

Common Equine Skin Issues in Summer Heat

Sweat-Induced Irritation
Horses sweat more in the summer, especially during exercise or turnout in hot, humid conditions. Sweat, combined with dirt and heat, can cause skin inflammation or folliculitis. Saddle areas and spots under tack are particularly prone to sweat-related breakouts and rubbing.

Sunburn
Horses with light-colored skin—particularly around the face and pasterns—are susceptible to painful sunburns. UV exposure can lead to redness, blistering, and peeling, and may cause horses to become head-shy or sensitive to grooming and haltering. Pink noses are a common problem area.

Sweet Itch
This allergic reaction to the bites of Culicoides midges (also called “no-see-ums”) causes intense itching, hair loss, and open sores, especially along the mane, tail, and belly line. Hot, humid weather increases insect activity, making sweet itch more prevalent in summer months.

Hives and Allergic Reactions
Increased exposure to pollen, insect bites, and seasonal plants can cause allergic skin reactions, such as hives or localized swelling. Reactions may also be triggered by ingredients in some fly sprays, shampoos, or topical treatments.

Rain Rot and Fungal Conditions
Although commonly associated with wet spring weather, fungal and bacterial skin infections can also flare in summer, especially after frequent bathing or if a horse is left damp under tack or blankets. Poorly dried coats can trap moisture and lead to rain rot, folliculitis, or fungal dermatitis.

Preventing and Managing Skin Issues in the Summer

Smart Turnout and Shelter
Provide shaded turnout options or rotate turnout to cooler hours—early morning or evening—to avoid peak sun. Fly sprays and sheets with UV protection and fly masks with nose coverage help prevent sunburn and insect bites, while fans and well-ventilated barns reduce overheating and sweating.

Targeted Grooming
Daily grooming is essential for removing sweat, dirt, and loose hair. Pay close attention to saddle areas, under tack, and between the legs where sweat builds up. Use a gentle touch and a soft brush or clean towel to avoid over-irritating sun-exposed or sensitive areas.

Mindful Bathing
While rinsing or bathing after a ride can be refreshing, over-bathing or using harsh shampoos too frequently can strip natural oils from your horse’s skin, leading to dryness and irritation. Use pH-balanced, moisturizing shampoos, and always rinse thoroughly. Use a scraper to remove excess water, then towel-dry and allow your horse to dry thoroughly before turning out or returning to a stall. A fan can help dry horses’ bodies, and a blow dryer set on cool can help dry legs.

Skin-Safe Products and Diet Support
Topical sprays with Manuka Honey, MicroSilver, or aloe vera can soothe irritation and provide antimicrobial protection. Test fly sprays on a small patch first to avoid allergic reactions. Internally, a diet rich in omega-3 fatty acids, zinc, and vitamin E helps support healthy skin from the inside out.

Early Detection and Action
Check your horse daily for signs of trouble, such as hair loss, flaking, scabs, hives, or excessive itching. If you spot a problem area, clean it gently and treat it with an antimicrobial spray or ointment. For persistent or worsening issues, consult your veterinarian to rule out underlying infections or allergies.

A Season for Prevention
Summer doesn’t have to mean skin struggles for your horse. With proactive grooming, intelligent management, and an eye for early warning signs, you can help your horse sail through the sunny season with a healthy coat and comfortable skin.