UV Index Finland
According to the WHO, the average daily ambient ultraviolet radiation in Finland is 1,494 J/m² (joules per square metre).
UV radiation overview
Finland is a far-northern country stretching from about 59.8°N on the Gulf of Finland to 70.1°N at Nuorgam in Lapland, making it one of the most northerly nations on Earth. Almost the entire territory lies above 60°N, so the sun never climbs high in the sky and most of the year is dominated by long nights and a low solar elevation. Combined with a cool boreal and subarctic climate, this geometry places Finland's ambient ultraviolet regime among the lowest in the world, with strong UV confined to a brief midsummer window.
About a quarter of Finland lies north of the Arctic Circle, where Lapland experiences true polar night in midwinter and continuous daylight under the midnight sun in summer. The Finnish Meteorological Institute's Sodankylä Arctic Space Centre at 67°N maintains one of the world's longest continuous Arctic records of ultraviolet radiation and total ozone, and STUK, the Finnish Radiation and Nuclear Safety Authority, runs a national UV monitoring network. In spring, fresh snow cover across Finland's lake-dotted landscape — the country has nearly 188,000 lakes — sharply enhances surface UV through high albedo even while the sun remains low.
Finland sits at #189 of 191 in the WHO's global ambient-UV ranking with about 1,494 J/m² of average daily UV, around the 1st percentile worldwide.
UV Radiation in Finland
This ranks 189 out of 191 countries measured worldwide — where 1 receives the most UV radiation.
Source: WHO Global Health Observatory (1997–2003)
