When can you see the Milky Way in Iceland?
Nowhere in Iceland does the bright core of the Milky Way climb clear of the horizon haze while the sky is fully dark. It peaks at about -3° in Mosfellsbær, Capital Region, and that happens around midsummer, when the sun never gets 18° below the horizon. What you can see is the rest of the band, high overhead on dark nights. The longest moonless nights come from October to March.
Where in Iceland is the Milky Way band brightest?
The band needs a dark sky more than anything. Each region with its longest moonless nights, how many of its places are Bortle 1 to 3, and its darkest place.
| State or region | Longest dark nights | Bortle 1 to 3 | Darkest place |
|---|---|---|---|
| East | October to March | 1 of 1 | SkaftafellBortle 2 |
| Northeast | October to February | 1 of 2 | JökulsárgljúfurBortle 3 |
| West | October to March | 1 of 1 | Snæfellsjökull National ParkBortle 3 |
| South | October to March | 0 of 1 | Thingvellir National ParkBortle 4 |
| Southern Peninsula | October to March | 0 of 1 | ReykjanesbærBortle 7 |
| Capital Region | October to March | 0 of 2 | MosfellsbærBortle 7 |
The darkest places in Iceland to see the Milky Way
- Skaftafell East · Bortle 221.93
- Jökulsárgljúfur Northeast · Bortle 321.85
- Snæfellsjökull National Park West · Bortle 321.81
- Thingvellir National Park South · Bortle 421.17
- Reykjanesbær Southern Peninsula · Bortle 718.75
- Mosfellsbær Capital Region · Bortle 718.63
- Akureyri Northeast · Bortle 818.03
- Reykjavík Capital Region · Bortle 817.59
Sky brightness overhead in mag/arcsec²: higher is darker, 21.95 is a natural sky.
Which months have the longest dark nights in Iceland?
Hours per night with the sun more than 18° below the horizon and the moon down, for the median place in 2027. From May to July most of Iceland gets no full darkness at all.
How the Milky Way dates for Iceland are calculated
The positions of the sun, the moon and the center of the Milky Way are calculated for every night of 2027 at each place. A night counts when the core stands more than 10° above the horizon for at least an hour while the sun is more than 18° below the horizon and the moon has set. These are calculated positions; whether a night is clear is only known closer to the date. How it works