✅ Medically reviewed by Dr. Thomas Biernacki, DPM — Board-Certified Podiatrist · Last updated April 6, 2026

Summer Foot Care Guide: A Podiatrist’s Tips for Happy Feet All Season

Summer: The Season That Creates the Most Foot Problems

Spring through summer is my busiest time of year as a podiatrist. The combination of increased activity, minimal footwear, barefoot beach and pool exposure, and heat-related swelling creates a perfect storm of foot problems that I see spike every year starting in May. This guide covers the most common summer foot issues and exactly how to prevent them.

The Sandal Problem

Sandals and flip-flops are the #1 cause of summer foot pain I see in my practice. The problem isn’t sandals themselves — it’s the biomechanically disastrous design of most of them. Standard flip-flops provide zero arch support, zero heel cushioning, and zero lateral stability. Wearing them for long days of walking (theme parks, vacations, outdoor events) is the equivalent of walking barefoot on pavement.

The result: acute plantar fasciitis in people who didn’t have it before the summer, tendon sprains from the muscle-gripping action required to keep flip-flops on, and blisters. I see this pattern every summer without fail.

Better sandal choices: HOKA Ora Recovery sandals, OOFOS recovery slides, Birkenstock (with actual arch support), Vionic sandals with orthotic footbeds, or Chacos with adjustable straps and arch support. These are sandals that actually support your foot rather than just leaving it unsupported on a thin slab of rubber.

Limit flip-flop duration: If you love traditional flip-flops, limit them to short distances (pool deck, beach access, showers). A 10,000-step day in flip-flops is a setup for heel pain that can last months.

Barefoot Walking Risks

Walking barefoot on beaches, around pools, and at campgrounds exposes your feet to plantar warts (HPV), athlete’s foot fungus, and puncture wounds. Plantar warts are caused by HPV strains that love warm, wet surfaces — pool decks and locker rooms are high-risk environments. Wear water shoes or sandals in these areas. If you notice a small, rough spot on the bottom of your foot that’s tender to pinch pressure, have it evaluated before it spreads.

Additionally, sudden increased barefoot walking on sand can actually strain the intrinsic foot muscles, leading to arch fatigue and plantar fasciitis — the same condition that reduces beach time just as it’s starting. Ease into barefoot beach walking rather than going all-in on the first beach day of the season.

Heat, Swelling, and Circulation

Heat causes blood vessels to dilate and fluid to shift into tissues — including foot and ankle tissues. Summer swelling (pedal edema) is extremely common, especially in people who spend time sitting (long car trips, flights) or standing in heat. Strategies: stay hydrated (dehydration paradoxically increases fluid retention), elevate feet when resting, wear compression socks during long travel days, and avoid crossing legs which restricts return circulation.

For people with underlying circulation issues (venous insufficiency, lymphedema), summer heat can significantly worsen symptoms. If your ankles are swelling substantially in summer heat, this is worth evaluating. Significant unilateral (one-sided) leg swelling can be a sign of a blood clot and warrants prompt medical attention.

Running and Activity Ramp-Up Injuries

Summer motivates many people to dramatically increase their activity levels after a sedentary winter. The foot and ankle can’t adapt as fast as motivation rises — the result is plantar fasciitis, Achilles tendinopathy, and metatarsal stress fractures from too-much-too-soon. The 10% rule applies: don’t increase your weekly mileage by more than 10% per week. Give your body time to adapt to new activity levels.

Toenail Issues in Summer

Sandals and open-toed footwear reveal toenail fungus that hid all winter under socks and closed shoes. If your toenails are thick, discolored, or crumbly, summer is the time to address this — not just for aesthetics, but because fungal infections worsen in the warm, moist environments of summer footwear. Additionally, ingrown toenails worsen in summer because the combination of moisture, heat, and tight footwear during activities creates optimal conditions for nail-edge penetration.

Sunscreen on Your Feet

Skin cancer can develop on feet — including on the soles, between toes, and under toenails. The bottom of the foot is one of the most likely places to develop acral lentiginous melanoma, a particularly aggressive melanoma type, because it’s frequently missed during skin checks. Apply sunscreen to the tops of your feet when wearing sandals, and check your feet and between your toes regularly for unusual moles, dark streaks, or lesions that are changing.

Summer is also a great time to come in for a comprehensive foot evaluation. Schedule with Balance Foot & Ankle Specialists and let us check your feet, nails, and skin as part of your summer health routine.

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Related Treatment Guides

• Plantar Fasciitis & Heel Pain Treatment
• Custom 3D Orthotics
• Sports Foot & Ankle Injury Treatment
• Bunion Treatment

Medical References & Sources

• American Podiatric Medical Association — Patient Education
• American Orthopaedic Foot & Ankle Society — Foot Conditions

Clinical References

1. Shakoor N, et al. “The effect of flip-flops on joint loading during walking.” Arthritis & Rheumatism. 2009;60(S10):1974.
2. Barton CJ, et al. “The effect of thong style flip-flops on balance, plantar pressure and kinematics during walking.” Footwear Science. 2009;1(2):69-78.
3. Bristow I, et al. “Skin cancer and the foot.” Journal of Foot and Ankle Research. 2010;3:12.