Vitamin D from sunlight in France
How long you need in the sun to make vitamin D, and when the sun is too low to make any at all, for 5 cities in France.
| City | Latitude | Elevation | Vitamin D winter |
|---|---|---|---|
| Paris | 48.85°N | 42 m | 3 Oct – 20 Mar (169 days) |
| Marseille | 43.30°N | 28 m | 21 Oct – 1 Mar (132 days) |
| Lyon | 45.75°N | 173 m | 13 Oct – 9 Mar (148 days) |
| Lille | 50.63°N | 20 m | 27 Sep – 26 Mar (181 days) |
| Tourcoing | 50.72°N | 49 m | 26 Sep – 27 Mar (183 days) |
The same sun that makes vitamin D also burns. UV index and sunburn times in France →