Why Sunscreen Remains Important During Monsoon, According To Dermatologists

Dermatologists have advised people not to stop using sunscreen during the monsoon season, warning that cloudy skies do not completely protect the skin from harmful ultraviolet (UV) radiation. While reduced sunlight and cooler temperatures may create the impression that sun exposure is lower during rainy weather, experts say a significant amount of UV rays can still reach the skin. They recommend continuing daily sun protection as an essential part of skincare throughout the year.

According to dermatologists, clouds can block some visible sunlight but do not fully prevent UV exposure. Dr. Swati Mohan, Dermatologist at Fortis Hospital, Faridabad, explained that up to 80% of UV rays can still pass through cloud cover, meaning skin remains vulnerable even when the sun is not clearly visible. Experts say this common misconception often leads people to skip sunscreen during the monsoon, increasing the risk of gradual skin damage.

Doctors also highlighted the role of UVA rays, which remain relatively consistent throughout the year and can penetrate clouds. Unlike UVB rays, which are mainly associated with sunburn, UVA rays reach deeper layers of the skin and contribute to premature ageing, pigmentation and long-term damage. Dr. Pankhuri Dudani, Consultant in the Department of Dermatology at Amrita Hospital, Faridabad, said many people notice increased tanning and uneven skin tone after the rainy season because of unnoticed UV exposure accumulated over time.

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Monsoon-related sun damage may not always be immediately visible but can affect skin health in several ways. Dermatologists say prolonged UV exposure can accelerate collagen breakdown, worsen pigmentation, delay the fading of acne marks and contribute to premature ageing. People undergoing skin treatments such as chemical peels, laser procedures, microneedling or using prescription retinoids should be particularly cautious, as these treatments can make the skin more sensitive to sunlight.

Experts also advised choosing sunscreen formulations suitable for humid weather conditions. Dr. Sachin Gupta, Senior Consultant in the Department of Dermatology at Amrita Hospital, Faridabad, recommended lightweight, gel-based and non-comedogenic sunscreens that are comfortable to use during the monsoon. Dermatologists suggest selecting products with broad-spectrum UVA and UVB protection, SPF 30 or higher and PA+++ or higher ratings. They also recommend reapplying sunscreen every two to three hours, especially during outdoor activities, sweating or exposure to rain, to maintain effective protection throughout the day.

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