Dark Sky Odds

Stargazing at Ånderdalen National Park: when is the sky clear and dark?

January is the best month for stargazing at Ånderdalen National Park: on average 27 clear, moonless hours of full darkness, and 14% of nights have at least two of them (ERA5, 2006–2025). The darkest spot we found there is darker than 53% of Europe’s land (NASA VIIRS 2025).

Data updated: 31 December 2025 · Sources and licences

Calculated 5 November 2026 · cloud cover ERA5 2006–2025 · night lights NASA VIIRS 2025

national park · Norway

JanuaryBest month
106Clear moonless dark hours a year
53%darker than … of Europe’s land
14%Nights with ≥ 2 such hours (January)

Month by month

MonthNights with ≥ 2 such hoursClear moonless dark hoursMoonless dark hoursOf them clear
January14%2719614%
February12%1813813%
March5%76611%
April0%00—
May0%00—
June0%00—
July0%00—
August0%00—
September3%43312%
October8%121339%
November10%1918011%
December12%192059%

No astronomical darkness (April, May, June, July, August): the Sun stays above −18° all night.

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.

Light pollution

Darker than53% of Europe’s land
Light pollutiondark rural sky (darkest 20–50 %)
Sky-glow index (own, VIIRS) — Darkest spot we found3.15
Sky-glow index (own, VIIRS) — at the official map point3.40
Sky-glow index (own, VIIRS) — median across the area4.05
Darkest spot we found69.225, 17.242 (map) — within 6.6 km of the Wikidata point (no OSM boundary)

Next new moons

New moonNightMoonless dark hours that nightTypical share of good nights that month
9 November 20268–9 November 202611.010%
9 December 20268–9 December 202613.312%
7 January 20277–8 January 202713.014%
6 February 20276–7 February 202710.712%
8 March 20277–8 March 20276.75%
6 April 20276–7 April 20270.00%
6 May 20276–7 May 20270.00%
4 June 20274–5 June 20270.00%
4 July 20273–4 July 20270.00%
2 August 20271–2 August 20270.00%
31 August 202731 August 2027 – 1 September 20270.00%
30 September 202729–30 September 20275.53%

Hours with the Sun below −18° and the Moon below the horizon, on the night of the new moon, at the darkest spot.

Meteor showers

ShowerPeak nightChance of a clear peak nightMoon litMoonless dark hours (Sun < −12°)Radiant max. height
Leonids17–18 November 202620%55%8.843°
Geminids *13–14 December 202632%20%14.854°
Geminids *14–15 December 202635%28%12.354°
Quadrantids3–4 January 202732%13%15.769°
Lyrids *22–23 April 2027—95%0.0—
Lyrids *23–24 April 2027—90%0.0—
Eta Aquariids *5–6 May 2027—0%0.0—
Eta Aquariids *6–7 May 2027—0%0.0—
Perseids *12–13 August 2027—84%0.0—
Perseids *13–14 August 2027—90%0.0—
Orionids21–22 October 202717%59%0.037°
Leonids *17–18 November 202720%82%0.043°
Leonids *18–19 November 202720%73%0.043°
Geminids14–15 December 202735%98%0.054°

* The peak falls in daylight in Europe, so both neighbouring nights are shown.

Clear peak night: at least 2 hours with ≤ 20 % cloud while the Sun is below −12°, on the same calendar night ± 1 in 2006–2025.

How we calculate