The UV index does not exceed 8 in the UK (8 is rare; 7 may occur on exceptional days, mostly in the two weeks towards the end of June). Indices of 9 and 10 are common in the Mediterranean area. ○
In the UK, the sun's UV rays are the strongest when the sun is highest in the sky between 11am and 3pm, from mid March to mid October. During this time, the sun can be strong enough to cause sunburn. ○
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UV index
Index Exposure