MYTH 03 / 05 · Skin
“You only need sun protection on sunny days.”
Clouds do not block all UV radiation. Protection depends on UV exposure and the time spent outdoors.
i5i6
THE EXPLANATION
What is behind the claim.
UV radiation reaches the skin even on cloudy days. Check the UV index and combine shade, clothing and sunscreen on exposed skin. The AAD recommends broad-spectrum UVA and UVB protection with SPF 30 or higher.
i5i6CONTEXT & LIMITATIONS
What to take away.
Outdoors, reapply about every two hours and after swimming or sweating, following product directions. Sunscreen alone cannot provide complete protection or justify longer sunbathing.
i5i6The supporting sources.
Source-based education · Updated 18 October 2026. This overview summarises published health information; a separate specialist approval of this text has not yet been documented. It does not replace personal medical advice.
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