Reviewed by dermatology experts at London Dermatology Clinics
Many people notice their acne changing with the seasons — especially during summer. Some find their skin appears clearer, while others experience increased breakouts, oiliness, or inflammation. This dermatologist-approved guide explains how summer weather affects acne, why breakouts may improve or worsen, and the best ways to care for acne-prone skin during hot, humid months.
Table of Contents:
- What Happens to Acne in the Summer?
- Why Acne May Improve During Summer
- Why Acne Can Get Worse in Hot Weather
- Common Summer Acne Triggers
- Best Dermatologist-Approved Tips for Managing Acne in Summer
- Skincare Ingredients to Use & Avoid in Summer
- Myths About Summer Acne (Dermatologist Review)
- When to Seek Professional Acne Treatment
- FAQs
- Summary
What Happens to Acne in the Summer?
Summer brings major changes to your skin. Higher temperatures, stronger UV exposure, and increased sweating all influence how your pores behave.
How summer affects acne:
- Increased sweat
- Higher oil (sebum) production
- More bacterial activity
- Temporary thickening of the outer skin layer
- More sunscreen usage (which can clog pores if unsuitable)
Depending on your skin type, these changes may reduce inflammation or trigger breakouts.
Why Acne May Improve During Summer
Some people feel their acne looks clearer in warm, sunny weather. Here’s why:
A. Mild UV exposure reduces inflammation
Sunlight has short-term anti-inflammatory effects, reducing redness and swelling.
B. Increased humidity prevents skin dryness
Hydrated skin may overproduce less oil, resulting in fewer clogged pores.
C. Sweating helps flush pores
Sweating can remove dirt and dead skin — but only if skin is cleansed properly afterwards.
D. Summer increases skin cell turnover
Warm weather gently exfoliates the skin, resulting in a smoother appearance.
However, these effects are temporary, and prolonged sun exposure worsens long-term acne and pigmentation.
Why Acne Can Get Worse in Hot Weather
For many people, acne becomes more active during the summer.
A. Sweat + oil + bacteria = clogged pores
Sweat collects dirt and oils, leading to congested pores and breakouts.
B. Sunscreen-induced breakouts
Thick or oily sunscreens may trigger “sunscreen acne”.
Dermatologists recommend gel-based, non-comedogenic formulas.
C. Heat increases oil production
Sebaceous glands become more active, resulting in shiny skin and blocked pores.
D. Friction acne (“acne mechanica”)
Hats, helmets, or masks trap heat, sweat, and bacteria.
E. Sun damage thickens the skin
This traps oil under the surface — leading to deeper, cyst-like breakouts later.
Common Summer Acne Triggers
Dermatologists frequently see acne flare-ups due to:
- Heavy sunscreen formulas
- Not cleansing after sweating
- Excessive oiliness
- Using too many active ingredients on sun-sensitive skin
- Wearing makeup in humid weather
- Chlorinated pool water
- Dehydration
Best Dermatologist-Approved Tips for Managing Acne in Summer
✔ Use lightweight, oil-free, gel-based moisturisers
Keeps skin hydrated without clogging pores.
✔ Choose non-comedogenic sunscreen
Look for water-based or gel SPFs.
✔ Cleanse twice daily
Remove sweat, sunscreen, bacteria, and oils.
✔ Shower soon after sweating or workouts
Sweat sitting on the skin increases breakouts.
✔ Avoid heavy makeup
Use breathable, non-comedogenic formulas.
✔ Stay hydrated
Helps balance oil production.
✔ Use exfoliating acids carefully
In the summer, skin is more sensitive to the sun — use AHAs/BHAs 2–3 times per week at most
Skincare Ingredients to Use & Avoid in Summer
Best Ingredients for Summer Acne Care
- Salicylic acid
- Niacinamide
- Benzoyl peroxide (low strength)
- Gel-based hyaluronic acid
- Lightweight retinoids (evening only)
Ingredients to Avoid or Reduce
- Thick occlusive moisturisers
- Heavy oils
- Harsh physical scrubs
- High-strength retinoids without sun protection
Myths About Summer Acne (Dermatologist Review)
Myth 1: The sun dries out pimples — so it cures acne.
False. Sun may reduce inflammation temporarily, but long-term exposure worsens acne and pigmentation.
Myth 2: Sweating cleans your pores.
Only true if you wash your skin afterward. Otherwise, sweat causes more breakouts.
Myth 3: Sunscreen causes acne.
Only some formulas do. Non-comedogenic SPFs are safe and necessary.
When to Seek Professional Acne Treatment
You should consult a dermatologist if:
- Acne worsens during summer
- You experience painful, cystic breakouts
- Sunscreen or sweating consistently triggers acne
- You develop acne-related pigmentation
- Home care no longer works
Professional treatments, such as chemical peels, oral/topical medications, and LED therapy, can help control summer-related flare-ups.
Frequently Asked Questions
Does acne get better in summer?
A. Sometimes, but not for everyone. Sunlight and humidity may reduce inflammation, but sweat and excess oil often increase breakouts.
Why is my acne worse in hot weather?
A. Heat increases sweat and oil, which combine with bacteria and clog pores.
Does sunlight help acne?
A. Short-term yes, long-term no. UV rays worsen acne, pigmentation, and skin ageing.
What sunscreen is best for acne-prone skin?
A. Gel-based, non-comedogenic, oil-free sunscreen with SPF 30+.
How can I prevent breakouts after sweating?
A. Cleanse your skin or rinse with water soon after sweating.
Summary
Summer can either improve or worsen acne depending on your skin type, oil levels, and sun exposure. While mild humidity and sun may reduce inflammation, heat and sweating often trigger breakouts. Using non-comedogenic products, cleansing regularly, and following a summer-friendly routine can significantly improve acne control.
If your acne becomes worse during summer or leads to persistent pigmentation, London Dermatology Clinics offers tailored acne treatment plans, from prescription skincare to advanced dermatologist-led procedures.
Book a consultation with our dermatology experts to get personalised acne care this summer.
