Dark Sky Odds

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

August is the best month for stargazing at National Park Munții Măcinului: on average 64 clear, moonless hours of full darkness, and 46% of nights have at least two of them (ERA5, 2006–2025). The darkest spot we found there is darker than 63% 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 · Romania

AugustBest month
496Clear moonless dark hours a year
63%darker than … of Europe’s land
46%Nights with ≥ 2 such hours (August)

Month by month

MonthNights with ≥ 2 such hoursClear moonless dark hoursMoonless dark hoursOf them clear
January24%4017323%
February22%3214522%
March30%4613733%
April32%4110440%
May23%267535%
June16%174637%
July36%416662%
August46%649865%
September38%5912746%
October32%5715537%
November22%3716822%
December25%3717321%

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 than63% of Europe’s land
Light pollutiondark rural sky (darkest 20–50 %)
Sky-glow index (own, VIIRS) — Darkest spot we found1.94
Sky-glow index (own, VIIRS) — at the official map point2.42
Sky-glow index (own, VIIRS) — median across the area2.72
Darkest spot we found45.125, 28.342 (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 202610.822%
9 December 20268–9 December 202611.525%
7 January 20277–8 January 202711.524%
6 February 20276–7 February 202710.522%
8 March 20277–8 March 20279.330%
6 April 20276–7 April 20277.532%
6 May 20276–7 May 20275.323%
4 June 20274–5 June 20273.716%
4 July 20273–4 July 20273.536%
2 August 20271–2 August 20275.246%
31 August 202731 August 2027 – 1 September 20277.246%
30 September 202729–30 September 20279.038%

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 202637%54%6.566°
Geminids *13–14 December 202637%20%10.278°
Geminids *14–15 December 202633%28%9.078°
Quadrantids3–4 January 202747%13%11.569°
Lyrids22–23 April 202770%96%1.278°
Eta Aquariids *5–6 May 202757%1%7.018°
Eta Aquariids *6–7 May 202748%0%7.018°
Perseids *12–13 August 202783%84%3.267°
Perseids *13–14 August 202785%90%2.268°
Orionids21–22 October 202763%59%3.361°
Leonids *17–18 November 202737%83%1.766°
Leonids *18–19 November 202727%73%3.066°
Geminids14–15 December 202733%98%0.078°

* 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