Why Your Acne Gets Worse in Summer

If you notice more breakouts during the summer months, you are not imagining it. Many people experience worsening acne during hot and humid weather, especially in New Hampshire when outdoor activities, sweat, sunscreen, and increased humidity become part of daily life.

While summer is often associated with healthy glowing skin, the combination of heat, oil production, clogged pores, and irritation can actually trigger acne flare-ups in both teenagers and adults.

Why Does Acne Get Worse in Summer?

Several factors contribute to increased breakouts during warmer months.

Increased Sweat and Oil Production

Hot temperatures cause your skin to produce more sweat and oil. When sweat mixes with bacteria, sunscreen, makeup, and dead skin cells, pores can become clogged more easily.

This creates the perfect environment for:

• blackheads
• whiteheads
• inflamed pimples
• cystic acne

People with naturally oily skin may notice especially severe flare-ups during humid summer weather.

Humidity Can Trap Dirt and Bacteria

Summer humidity can make your skin feel greasy throughout the day. Excess moisture on the skin’s surface may trap:

• dirt
• oil
• environmental pollutants
• bacteria

This can worsen inflammation and contribute to persistent acne breakouts.

Sunscreen Can Sometimes Trigger Breakouts

Sunscreen is essential for protecting your skin from sun damage and skin cancer, but some products can clog pores.

Heavy or oily sunscreens may contribute to “acne cosmetica,” a type of acne caused by skincare or cosmetic products.

If you are acne-prone, look for sunscreens labeled:

• oil-free
• non-comedogenic
• lightweight
• mineral-based

A dermatologist can also recommend products that protect your skin without worsening acne.

Sweat and Friction Can Cause “Acne Mechanica”

During summer, increased sweating combined with friction from hats, helmets, sports equipment, or tight clothing can trigger a specific type of acne called acne mechanica.

This commonly appears on the:

• forehead
• chest
• back
• shoulders
• jawline

Athletes and people who spend a lot of time outdoors may be more likely to experience these breakouts.

Can Sun Exposure Help Acne?

Some people believe sunlight improves acne because the skin may temporarily appear drier or less inflamed after sun exposure.

However, this effect is usually short-lived.

Too much sun exposure can:

• irritate the skin
• increase inflammation
• cause dehydration
• trigger excess oil production later
• worsen acne scars and dark spots

Additionally, certain acne medications can make your skin more sensitive to sunlight.

How to Prevent Summer Acne Flare-Ups

Fortunately, there are several ways to reduce breakouts during summer.

Wash Sweat Off Promptly

After exercising or spending time outdoors, gently cleanse your skin to remove sweat, oil, and bacteria.

Avoid harsh scrubbing, which can irritate acne and make inflammation worse.

Use Lightweight Skincare Products

Switching to lighter products during summer may help prevent clogged pores.

Look for:

• gel-based moisturizers
• non-comedogenic sunscreen
• oil-free makeup
• gentle cleansers

Avoid Overwashing

While it may be tempting to wash your face repeatedly in hot weather, overwashing can strip the skin and trigger even more oil production.

Most people do best cleansing twice daily.

Shower After Outdoor Activities

Sweat trapped under clothing can worsen body acne. Showering after workouts, hiking, or outdoor activities can help reduce breakouts on the chest, shoulders, and back.

When Should You See a Dermatologist for Acne?

If over-the-counter treatments are not helping, or if your acne is becoming painful, widespread, or causing scarring, it may be time to see a dermatologist.

Professional acne treatments may include:

• prescription topical medications
• oral medications
• hormonal treatments
• chemical peels
• acne facials
• laser or light-based therapies

Early treatment can help prevent permanent acne scarring and improve long-term skin health.

Acne Treatment in New Hampshire

At Seacoast Dermatology, we help patients of all ages manage acne and prevent seasonal flare-ups. Whether your breakouts worsen during summer or persist year-round, our team can create a personalized treatment plan for your skin type and goals.

If you are struggling with acne, schedule an appointment with our dermatology team today.