Vitamin D from sunlight in Poland
How long you need in the sun to make vitamin D, and when the sun is too low to make any at all, for 28 cities in Poland.
| City | Latitude | Elevation | Vitamin D winter |
|---|---|---|---|
| Warsaw | 52.23°N | 113 m | 22 Sep – 31 Mar (191 days) |
| Kraków | 50.06°N | 219 m | 29 Sep – 24 Mar (177 days) |
| Wrocław | 51.10°N | 115 m | 25 Sep – 28 Mar (185 days) |
| Łódź | 51.77°N | 214 m | 24 Sep – 30 Mar (188 days) |
| Poznań | 52.41°N | 69 m | 21 Sep – 1 Apr (193 days) |
| Gdańsk | 54.35°N | 8 m | 15 Sep – 8 Apr (206 days) |
| Szczecin | 53.43°N | 149 m | 18 Sep – 5 Apr (200 days) |
| Lublin | 51.25°N | 184 m | 26 Sep – 28 Mar (184 days) |
| Bydgoszcz | 53.12°N | 37 m | 19 Sep – 4 Apr (198 days) |
| Białystok | 53.13°N | 135 m | 20 Sep – 3 Apr (196 days) |
| Katowice | 50.26°N | 276 m | 29 Sep – 24 Mar (177 days) |
| Gdynia | 54.52°N | 14 m | 14 Sep – 9 Apr (208 days) |
| Częstochowa | 50.80°N | 253 m | 27 Sep – 26 Mar (181 days) |
| Radom | 51.40°N | 159 m | 25 Sep – 28 Mar (185 days) |
| Gliwice | 50.30°N | 200 m | 28 Sep – 25 Mar (179 days) |
| Rzeszów | 50.04°N | 209 m | 30 Sep – 23 Mar (175 days) |
| Toruń | 53.01°N | 51 m | 19 Sep – 3 Apr (197 days) |
| Kielce | 50.87°N | 267 m | 27 Sep – 26 Mar (181 days) |
| Olsztyn | 53.78°N | 151 m | 17 Sep – 6 Apr (202 days) |
| Rybnik | 50.10°N | 233 m | 29 Sep – 24 Mar (177 days) |
| Tychy | 50.14°N | 259 m | 29 Sep – 24 Mar (177 days) |
| Opole | 50.67°N | 173 m | 27 Sep – 26 Mar (181 days) |
| Elbląg | 54.15°N | 8 m | 16 Sep – 7 Apr (204 days) |
| Płock | 52.55°N | 103 m | 21 Sep – 2 Apr (194 days) |
| Wałbrzych | 50.77°N | 495 m | 27 Sep – 26 Mar (181 days) |
| Włocławek | 52.65°N | 58 m | 21 Sep – 2 Apr (194 days) |
| Zielona Góra | 51.94°N | 143 m | 23 Sep – 31 Mar (190 days) |
| Tarnów | 50.01°N | 220 m | 30 Sep – 23 Mar (175 days) |
The same sun that makes vitamin D also burns. UV index and sunburn times in Poland →