Dark Sky Odds

Stargazing at Salzburger Lungau and Kärntner Nockberge: when is the sky clear and dark?

December is the best month for stargazing at Salzburger Lungau and Kärntner Nockberge: on average 31 clear, moonless hours of full darkness, and 18% of nights have at least two of them (ERA5, 2006–2025). The darkest spot we found there is darker than 86% 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 · Austria

DecemberBest month
201Clear moonless dark hours a year
86%darker than … of Europe’s land
18%Nights with ≥ 2 such hours (December)

Month by month

MonthNights with ≥ 2 such hoursClear moonless dark hoursMoonless dark hoursOf them clear
January14%2317413%
February18%2614618%
March16%2513519%
April13%179817%
May6%66410%
June7%64214%
July7%85613%
August10%129413%
September9%101248%
October13%1615410%
November15%2116812%
December18%3117318%

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 than86% of Europe’s land
Light pollutionvery dark (darkest 5–20 %)
Sky-glow index (own, VIIRS) — Darkest spot we found0.35
Sky-glow index (own, VIIRS) — at the official map point0.39
Sky-glow index (own, VIIRS) — median across the area0.42
Darkest spot we found47.008, 13.792 (map) — within 7.6 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 202610.815%
9 December 20268–9 December 202611.718%
7 January 20277–8 January 202711.514%
6 February 20276–7 February 202710.718%
8 March 20277–8 March 20279.316%
6 April 20276–7 April 20277.313%
6 May 20275–6 May 20275.26%
4 June 20274–5 June 20272.87%
4 July 20273–4 July 20272.57%
2 August 20271–2 August 20274.710%
31 August 202731 August 2027 – 1 September 20277.010%
30 September 202729–30 September 20278.79%

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 202632%55%6.564°
Geminids *13–14 December 202625%20%10.276°
Geminids *14–15 December 202625%28%9.076°
Quadrantids3–4 January 202712%13%11.770°
Lyrids22–23 April 202723%95%1.377°
Eta Aquariids *5–6 May 202718%0%6.816°
Eta Aquariids *6–7 May 202722%0%6.716°
Perseids *12–13 August 202720%84%3.268°
Perseids *13–14 August 202727%90%2.268°
Orionids21–22 October 202715%59%3.359°
Leonids *17–18 November 202732%82%1.864°
Leonids *18–19 November 202730%73%3.065°
Geminids14–15 December 202725%98%0.076°

* 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