Dark-sky places in Finland
Of 41 dark-sky places and national parks in Finland, Ekenäs Archipelago National Park (of those darker than half of Europe’s land) has the most clear, moonless hours of full darkness: 152 a year (ERA5, 2006–2025). The darkest sky is at Petkeljärvi National Park, darker than 94% of Europe’s land (NASA VIIRS 2025).
| Place | Best month | Clear moonless dark hours a year | Darker than… |
|---|---|---|---|
| Teijo National Park national park | March | 158 | 15% |
| Nuuksio National Park national park | March | 154 | 15% |
| Ekenäs Archipelago National Park national park | March | 152 | 78% |
| Kurjenrahka National Park national park | March | 147 | 49% |
| Archipelago National Park national park | March | 146 | 93% |
| Sipoonkorpi National Park national park | March | 143 | 8% |
| Torronsuo National Park national park | March | 142 | 58% |
| Kauhaneva–Pohjankangas National Park national park | March | 142 | 43% |
| Puurijärvi-Isosuo National Park national park | March | 141 | 62% |
| Liesjärvi National Park national park | March | 139 | 64% |
| Bothnian Bay National Park national park | October | 136 | 21% |
| Bothnian Sea National Park national park | March | 136 | 76% |
| Lauhanvuori National Park national park | March | 135 | 42% |
| Seitseminen National Park national park | March | 133 | 74% |
| Helvetinjärvi National Park national park | March | 131 | 78% |
| Valkmusa National Park national park | March | 128 | 55% |
| Eastern Gulf of Finland National Park national park | March | 122 | 77% |
| Isojärvi National Park national park | March | 118 | 78% |
| Repovesi National Park national park | March | 117 | 79% |
| Leivonmäki National Park national park | March | 116 | 77% |
| Päijänne National Park national park | March | 116 | 79% |
| Pyhä-Häkki National Park national park | March | 115 | 84% |
| Salamajärvi National Park national park | March | 114 | 87% |
| Pallas-Yllästunturi National Park national park | October | 114 | 62% |
| Southern Konnevesi National Park national park | March | 113 | 79% |
| Linnansaari National Park national park | March | 106 | 82% |
| Rokua National Park national park | March | 106 | 48% |
| Pyhä-Luosto National Park national park | December | 105 | 36% |
| Syöte National Park national park | March | 100 | 34% |
| Kolovesi National Park national park | March | 100 | 87% |
| Tiilikkajärvi National Park national park | March | 95 | 80% |
| Salla National Park national park | March | 92 | 40% |
| Oulanka National Park national park | March | 91 | 52% |
| Hiidenportti National Park national park | March | 90 | 73% |
| Lemmenjoki National Park national park | October | 89 | 77% |
| Hossa National Park national park | March | 88 | 34% |
| Petkeljärvi National Park national park | March | 88 | 94% |
| Riisitunturi National Park national park | March | 86 | 30% |
| Koli National Park national park | March | 86 | 84% |
| Urho Kekkonen National Park national park | December | 84 | 71% |
| Patvinsuo National Park national park | March | 83 | 94% |
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.