Dark Sky Odds

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

December is the best month for stargazing at Berchtesgaden National Park: on average 43 clear, moonless hours of full darkness, and 22% of nights have at least two of them (ERA5, 2006–2025). The darkest spot we found there is darker than 73% 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 · Germany

DecemberBest month
271Clear moonless dark hours a year
73%darker than … of Europe’s land
22%Nights with ≥ 2 such hours (December)

Month by month

MonthNights with ≥ 2 such hoursClear moonless dark hoursMoonless dark hoursOf them clear
January17%3018216%
February20%3014521%
March19%2913521%
April16%219722%
May10%106316%
June6%53515%
July7%75114%
August10%159316%
September17%2212418%
October18%2915419%
November19%3016818%
December22%4317924%

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 than73% of Europe’s land
Light pollutiondark rural sky (darkest 20–50 %)
Sky-glow index (own, VIIRS) — Darkest spot we found1.05
Sky-glow index (own, VIIRS) — at the official map point2.15
Sky-glow index (own, VIIRS) — median across the area1.29
Darkest spot we found47.475, 13.008 (map) — within the OSM boundary

Next new moons

New moonNightMoonless dark hours that nightTypical share of good nights that month
9 November 20268–9 November 202610.819%
9 December 20268–9 December 202611.822%
7 January 20277–8 January 202711.717%
6 February 20276–7 February 202710.720%
8 March 20277–8 March 20279.219%
6 April 20276–7 April 20277.216%
6 May 20275–6 May 20275.010%
4 June 20274–5 June 20272.56%
4 July 20273–4 July 20272.27%
2 August 20271–2 August 20274.510%
31 August 202731 August 2027 – 1 September 20276.810%
30 September 202729–30 September 20278.817%

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 202637%20%10.376°
Geminids *14–15 December 202633%28%9.276°
Quadrantids3–4 January 202725%13%11.871°
Lyrids22–23 April 202733%95%1.276°
Eta Aquariids *5–6 May 202727%0%6.715°
Eta Aquariids *6–7 May 202733%0%6.716°
Perseids *12–13 August 202718%84%3.267°
Perseids *13–14 August 202722%90%2.268°
Orionids21–22 October 202727%59%3.358°
Leonids *17–18 November 202732%82%1.764°
Leonids *18–19 November 202732%73%3.064°
Geminids14–15 December 202733%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