Summer Foot Care Guide: Protecting Your Feet in Heat, Water, and Sandal Season

Medically reviewed by Dr. Tom Biernacki, DPM — Board-Certified Podiatric Surgeon — Balance Foot & Ankle, Howell & Bloomfield Hills, MI. Last updated April 2026.

Why Summer Is a High-Risk Season for Foot Problems

Summer’s combination of heat, moisture, increased barefoot activity, new footwear, and extended outdoor time creates a perfect storm of conditions that podiatrists recognize as peak season for foot complaints. The transition from enclosed, supportive winter footwear to sandals, flip-flops, or barefoot activity changes the mechanical loading of the foot and exposes skin that has been protected all winter to new friction, UV radiation, and environmental hazards. Understanding these seasonal risks and taking simple preventive steps keeps your feet healthy through Michigan’s outdoor season.

Blisters from Sandals and New Summer Shoes

Blisters are the number-one summer foot complaint, driven by the combination of increased moisture from sweat, new footwear that hasn’t been broken in, and strap patterns that create friction at specific contact points on the foot. The back of the heel, the sides of the toes, and the ball of the foot are the most common blister sites in sandal wearers.

Prevention starts with gradual introduction of new sandals — wear them for 30-60 minutes per day initially rather than immediately on a full day of walking or an event. Anti-friction products applied at anticipated hotspots before donning sandals reduce skin-to-strap friction. Moisture-wicking socks with sandals that accommodate them (sport sandals) reduce blister risk compared to bare skin against straps on hot, sweaty feet.

For blisters that develop, resist the urge to aggressively pop them — the blister roof provides a natural bacterial barrier. A sterile needle at the blister edge to drain fluid while leaving the roof intact, followed by a bandage or blister dressing, is the appropriate management. Any blister that appears red, warm, or shows surrounding spreading redness requires medical evaluation, as bacterial infection can develop quickly — particularly in individuals with diabetes or impaired circulation.

Athlete’s Foot and Fungal Nail Infections in Summer

Tinea pedis (athlete’s foot) thrives in the warm, moist conditions of summer — pool decks, locker rooms, water park surfaces, and sweaty shoes are all ideal fungal transmission environments. The characteristic burning, itching, scaling, and peeling between the toes and on the plantar surface typically respond to topical antifungal treatment (clotrimazole, terbinafine, or miconazole) applied consistently for two to four weeks. Recurrences are common without preventive habits.

Prevention includes wearing water shoes or sandals in communal wet areas, drying feet thoroughly between the toes after showering or swimming, changing socks daily (or more frequently if feet sweat heavily), and using antifungal powder in shoes during warm months. Natural fiber socks (merino wool or bamboo blends) wick moisture more effectively than synthetic materials, reducing the humid environment that fungi need to thrive.

Onychomycosis — fungal infection of the toenails — appears as yellowing, thickening, crumbling, or discoloration of the nail plate and affects approximately 10% of the general population, with rates increasing significantly with age. Summer is a common trigger for seeking treatment as sandal season makes discolored nails more visible and socially noticeable. Treatment options include prescription oral antifungal medications (most effective), prescription topical nail lacquers, and laser therapy. A nail culture confirms the diagnosis and identifies the causative organism before committing to a prolonged treatment course.

Hot Pavement: Burns and Heat-Related Injuries

Asphalt pavement temperatures on a 90°F summer day can reach 140-160°F — hot enough to cause serious burns within seconds of barefoot contact. Children, who are more likely to walk barefoot and have thinner skin, are particularly vulnerable. Adults with peripheral neuropathy from diabetes or other causes may not feel the burning sensation that would prompt a person with normal sensation to immediately step off hot pavement, making burns a genuine and serious risk for this population.

Always wear protective footwear on pavement and other sun-exposed surfaces in summer. Check pavement temperature by touching it briefly with the back of your hand before walking barefoot on it. For patients with diabetes or neuropathy, wearing protective footwear is non-negotiable in summer — even around the pool or on beach boardwalks. Any burn or wound on the foot of a diabetic patient requires prompt podiatric evaluation rather than self-management.

Sunburn on the Feet

The tops of the feet are one of the most commonly sunburned areas of the body, particularly in sandal wearers who apply sunscreen to their legs and arms but forget to include the feet. Severe sunburn on the feet causes significant swelling, pain, and impaired mobility that can be temporarily debilitating. Apply sunscreen (SPF 30 or higher) to the tops of the feet and reapply after swimming or sweating.

For patients with plantar warts, sun exposure does not treat the virus but may sensitize the skin; always consult a podiatrist for wart management rather than attempting over-the-counter treatments on painful or spreading plantar lesions.

Dehydration and Swollen Feet in Summer Heat

Heat causes peripheral vasodilation and increased fluid pooling in the lower extremities, contributing to the ankle and foot swelling many people experience in summer. Prolonged standing, long flights or car rides, and inadequate hydration compound this tendency. Swollen feet at the end of a hot summer day are usually benign and improve with elevation, cooling, and adequate fluid intake.

However, significant unilateral (one-sided) swelling, swelling accompanied by redness and warmth (raising concern for deep vein thrombosis or infection), or new swelling in patients with heart, kidney, or liver conditions warrants medical evaluation. Patients taking certain blood pressure medications (calcium channel blockers) or anti-inflammatory medications may have medication-related edema that is worse in summer heat.

Plantar Warts and Summer Swimming

The human papillomavirus (HPV) strains that cause plantar warts spread easily in moist communal environments — pool decks, locker room floors, and beach showers are all transmission sites. Plantar warts appear as rough, thickened areas on the sole of the foot, often with small black dots (thrombosed capillaries) visible in the lesion. They can be painful when pressed directly or squeezed laterally.

Over-the-counter salicylic acid preparations treat mild warts effectively in patients with good immune function, but stubborn warts and those in immunocompromised patients require professional treatment. Podiatric options include cryotherapy, topical immunotherapy, laser treatment, and surgical excision for resistant cases. Prompt treatment prevents the wart from growing larger and reduces transmission risk to others in shared water environments.

Heel Pain Flares in Summer

Many patients with plantar fasciitis experience flares in summer as they transition to flat, unsupportive sandals after a winter in more supportive footwear. The loss of arch support with minimal summer footwear dramatically increases plantar fascia tensile stress and can trigger or worsen heel pain that was well-controlled during the year. Patients who are prone to plantar fasciitis should choose sandals with built-in arch support, consider inserting their custom orthotics into accommodating sandal designs, and maintain their home stretching routines through the summer months rather than assuming that milder weather means the condition is resolved.

Pedicure Safety: What to Know Before Your Summer Pedicure

Warm weather drives significant demand for nail salons and pedicures, but foot soak basins and cuticle tools are potential sources of bacterial and fungal infection if the salon does not maintain appropriate sanitation protocols. Nail salon infections — including Mycobacterium fortuitum furunculosis (a bacterial infection causing bumps and ulcers on the lower legs) and fungal nail infections — are well-documented in medical literature.

Protect yourself by choosing salons that use single-use liner inserts in foot baths, that use sterilized (autoclave or dry heat) rather than just disinfected metal tools, and that are licensed by the Michigan Department of Licensing and Regulatory Affairs (LARA). Avoid shaving legs immediately before a pedicure (micro-abrasions increase infection risk), and bring your own nail tools if you visit frequently. Patients with diabetes, peripheral vascular disease, or immunosuppression should strongly consider having pedicure-type nail care performed by a podiatrist rather than at a nail salon, where infection risks are poorly controlled.

When to See a Podiatrist This Summer

Summer is an excellent time to address foot concerns that have been affecting your quality of life. Any persistent heel pain, recurring ankle sprains, nail problems that are limiting your activity or causing embarrassment, plantar warts that have not responded to over-the-counter treatment, or any new skin or nail changes deserve professional evaluation. Contact Balance Foot & Ankle to schedule an appointment and get your feet ready for an active, comfortable summer season.

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Balance Foot & Ankle — Howell & Bloomfield Township, MI

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Summer Foot Care at Balance Foot & Ankle

Summer heat, sandals, and barefoot activities bring unique foot health challenges. Our podiatrists at Balance Foot & Ankle help you keep your feet healthy all summer at our Howell and Bloomfield Hills offices.

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Clinical References

1. Bristow IR, et al. “The exposure of podiatrists to ultraviolet radiation.” Br J Dermatol. 2009;160(3):620-623.
2. Freeman DB. “Corns and calluses resulting from mechanical hyperkeratosis.” Am Fam Physician. 2002;65(11):2277-2280.
3. Al-Mubarak L, Al-Mohanna H. “Cutaneous findings in dermatology related to footwear.” Skinmed. 2015;13(2):119-127.

In-Office Treatment at Balance Foot & Ankle

If home care isn’t resolving your your foot or ankle concern, a visit with a board-certified podiatrist is the fastest path to accurate diagnosis and a personalized plan. At Balance Foot & Ankle Specialists, Dr. Tom Biernacki, Dr. Carl Jay, and Dr. Daria Gutkin offer same-day and next-day appointments at both our Howell and Bloomfield Hills offices. We perform on-site diagnostic ultrasound, digital X-ray, conservative care, advanced regenerative treatments, and minimally invasive surgery when indicated.

Call (810) 206-1402 or request an appointment online. Most insurance plans accepted, including Medicare, Blue Cross Blue Shield, Aetna, Cigna, and United Healthcare.

Most Common Mistake We See

The most common mistake we see is: Waiting too long before seeking care. Fix: any foot pain lasting more than 4 weeks, or any sudden severe symptom, deserves a professional evaluation rather than more rest.

Warning Signs That Need Same-Day Care

Dr. Tom’s Top 3 — The Premium Foot Pain Stack (2026)

If you only buy three things for foot pain, get these. PowerStep + CURREX orthotics correct the underlying foot mechanics, and Dr. Hoy’s pain gel delivers fast topical relief. This is the exact stack Dr. Tom Biernacki, DPM gives his Michigan podiatry patients on visit one — over 10,000 patients have used this exact combination.