Dark-sky places in Switzerland
Of 2 dark-sky places and national parks in Switzerland, Gantrisch Nature Park has the most clear, moonless hours of full darkness: 303 a year (ERA5, 2006–2025). The darkest sky is at Swiss National Park, darker than 80% of Europe’s land (NASA VIIRS 2025).
| Place | Best month | Clear moonless dark hours a year | Darker than… |
|---|---|---|---|
| Gantrisch Nature Park International Dark Sky Park | December | 303 | 66% |
| Swiss National Park national park | December | 243 | 80% |
Climate, not a forecast: these are shares of past nights (ERA5 reanalysis, 2006–2025), not a prediction for a particular night. Check a forecast before you go.