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.

(NB: At the end of May and start of June, indices of 8 in the UK have already begun to show, covering most of Southern England. Source: Met Office forecast)

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 late September. During this time, the sun can be strong enough to cause sunburn.

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UV index

Index Exposure

  • 1-2 Low - 60min to burn - sunscreen/parasol
  • 3-5 Moderate - 45min to burn - sunscreen & parasol from this point onwards
  • 6-7 High - 30min to burn
  • 8-10 Very high - 15min to burn
  • 11 Extreme (stay indoors from 10am—4pm)
jan 9 2021 ∞
jan 12 2024 +