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UV forecast

The map shows expected ultra-violet radiation from the sun over Scandinavia. The forecast accounts for expected cloud cover. Less clouds increases radiation.

You should check the UV forecast in order to make an informed decision about how to protect yourself from harmful radiation. UV rays may harm skin and eyes in the short and long terms.

Sunday 19. May 2013 kl. 14:00

UV map for Sunday 19. May 2013 kl. 14:00

Monday 20. May 2013 kl. 14:00

UV map for Monday 20. May 2013 kl. 14:00

Tuesday 21. May 2013 kl. 14:00

UV map for Tuesday 21. May 2013 kl. 14:00
Time before potential skin injury
Strength UV index Time before potential injury MED / hour
Low 1-2 1 day 0,4-0,9
Moderate 3-5 1-2 hours 1,3-2,1
Strong 6-70,5-1 hour 2,6-30
Very strong 8-10 15-30 minutes 3,4-4,3
Extreme >11 5-15 minutes >4,7

The table supposes a light skin complexion.

Recommended behavior when exposed to the sun
Strenght Reccomendation
Low None. Enjoy the sun!
Moderate Clothing, hat og and sun glasses. Take breaks away from the sun!
Strong Clothing, hat og and sun glasses. Take breaks away from the sun between 12pm and 3pm. Use sun screen with medium protection factor (15) og UVA protection.
Very strong Avoid the sun between 12pm and 3pm and seek shade. Use clothes, hat and sun glasses.
Extreme Avoid the sun between 12pm and 3pm and seek shade. Use of clothes, hat and sun glasses is absolutely necessary.
Sun strength comparison
Strength Comparable conditions
Low Norwegian winter.
Moderate Norwegian Easter. Spring / autumn in Southern Norway, may - august in Northern Norway.
Strong June - july in Southern Norway. May in the mountains. Spanish spring and autumn.
Very strong Glacier / snowy mountains in june - july. Mediterranean area in summer.
Extreme Canary Island and the Alps in summer. Equatorial areas. Threshold value for solariums.

Medium cloud density reduces UV index by approximately one half. In other words, cloudy weather in tropical areas give the same UV index as Norwegian mid summer. Spending time outdoors when the UV index is very strong or extreme, requires use of sunscreen with high or very high protection. The following is the European Union's recommendation of Sun Protection Factor (SPF):

  • Low protection – SPF 14,9 or below
  • Medium protection – SPF 15-30
  • High protection – over SPF 30
  • Very high protection – over SPF 50