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 12 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) |
| Pori | 61.48°N | 20 m | 21 Aug – 4 May (257 days) |
| Joensuu | 62.60°N | 72 m | 19 Aug – 6 May (261 days) |
| Kouvola | 60.87°N | 81 m | 25 Aug – 30 Apr (249 days) |
The same sun that makes vitamin D also burns. UV index and sunburn times in Finland →