Vitamin D from sunlight in Finland
How long you need in the sun to make vitamin D, and when the sun is too low to make any at all, for 9 cities in Finland.
| City | Latitude | Elevation | Vitamin D winter |
|---|---|---|---|
| Helsinki | 60.17°N | 26 m | 27 Aug – 28 Apr (245 days) |
| Espoo | 60.21°N | 16 m | 26 Aug – 28 Apr (246 days) |
| Tampere | 61.50°N | 114 m | 22 Aug – 3 May (255 days) |
| Vantaa | 60.29°N | 18 m | 26 Aug – 29 Apr (247 days) |
| Oulu | 65.01°N | 15 m | 7 Aug – 18 May (285 days) |
| Turku | 60.45°N | 22 m | 25 Aug – 30 Apr (249 days) |
| Jyväskylä | 62.24°N | 109 m | 19 Aug – 6 May (261 days) |
| Kuopio | 62.89°N | 90 m | 17 Aug – 8 May (265 days) |
| Lahti | 60.98°N | 105 m | 24 Aug – 1 May (251 days) |
The same sun that makes vitamin D also burns. UV index and sunburn times in Finland →