Home
Weather London
WeatherRadar
RainfallRadar
TemperatureRadar
WindRadar
LightningRadar
Weather News
Editor's Pick
Discover the app
Weather widget
Contact us
Apps
Career
    Home / Editor's Pick /

    All year UV safety: Don't be fooled by overcast skies

All year UV safety
Don't be fooled by overcast skies

Sun shines through  clouds
Even on cloudy days, UV-light can still break through.

Overcast conditions usually don’t inspire the need to check UV levels, but at any time of the year, precautions should be taken.

Believe it or not roughly 90% of UV light can cut through clouds, it can even bounce off puddles and snow so don’t assume it is safe to head out without sunscreen just because it’s a grey day.

You may also assume that it is safe if it is cold. UV rays have nothing to do with the heat emitted by the Sun. It can be in the minus temperatures and still be dangerous due to UV.

When is it safe?

The UV-Index rating makes it easy to see when protection is required. Any day with an index of three or higher you should use sunscreen.

You can check the UV-Index rating near you daily within your local forecast information on the Weather & Radar app.

App tip: Clouds on the WeatherRadarread more
Weather & Radar editorial team
This might also interest you
Autumn arrives with vivid colour. Your weather - Your shots. . . Sunday, 6 September 2026
Split image showing peach-lit textured clouds above silhouetted trees and golden cumulus clouds reflected in a calm canal lined with boats.
Sunday, 6 September 2026

Your weather - Your shots

Autumn arrives with vivid colour
Warm waters raise severe weather risk. Mediterranean bathtub. . . Friday, 4 September 2026
Left: Map showing water temperatures in the Mediterranean; Right: Dark clouds over a stretch of Mediterranean coastline. A bolt of lightning strikes and a curtain of rain can be seen.
Friday, 4 September 2026

Mediterranean bathtub

Warm waters raise severe weather risk
Hurricane Lowell threatens Hawaii. Gales and flash floods. . . Tuesday, 8 September 2026
WindRadar showing Hurricane Lowell north-west of Hawaii and its well-defined storm centre.
Tuesday, 8 September 2026

Gales and flash floods

Hurricane Lowell threatens Hawaii
All articles
Weather & Radar

Weather & Radar is also available on

Google Play StoreApp Store

Company

Contact us Privacy Policy Legal info Accessibility statement

Services

Uploader

Socials

facebooktwittertikToklinkList