Dark Sky Odds

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

March is the best month for stargazing at Wild Nephin National Park: on average 14 clear, moonless hours of full darkness, and 9% of nights have at least two of them (ERA5, 2006–2025). The darkest spot we found there is darker than 93% 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

International Dark Sky Park · national park · Ireland · DarkSky International

MarchBest month
74Clear moonless dark hours a year
93%darker than … of Europe’s land
9%Nights with ≥ 2 such hours (March)

Month by month

MonthNights with ≥ 2 such hoursClear moonless dark hoursMoonless dark hoursOf them clear
January7%111816%
February6%81466%
March9%1412711%
April9%117614%
May1%1912%
June0%00—
July0%00—
August1%2603%
September4%51115%
October6%91526%
November4%51763%
December5%81884%

No astronomical darkness (June, July): 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 than93% of Europe’s land
Light pollutionvery dark (darkest 5–20 %)
Sky-glow index (own, VIIRS) — Darkest spot we found0.15
Sky-glow index (own, VIIRS) — at the official map point0.17
Sky-glow index (own, VIIRS) — median across the area0.19
Darkest spot we found54.058, -9.758 (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 202611.04%
9 December 20268–9 December 202612.25%
7 January 20277–8 January 202712.07%
6 February 20276–7 February 202710.76%
8 March 20277–8 March 20278.89%
6 April 20276–7 April 20276.29%
6 May 20275–6 May 20272.31%
4 June 20274–5 June 20270.00%
4 July 20273–4 July 20270.00%
2 August 20271–2 August 20270.71%
31 August 202731 August 2027 – 1 September 20275.71%
30 September 202729–30 September 20278.24%

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 202610%55%6.858°
Geminids *13–14 December 20267%21%11.069°
Geminids *14–15 December 20268%29%9.769°
Quadrantids3–4 January 202717%13%13.073°
Lyrids22–23 April 202720%95%1.568°
Eta Aquariids *5–6 May 202718%0%5.37°
Eta Aquariids *6–7 May 202717%1%5.06°
Perseids *12–13 August 20278%84%3.266°
Perseids *13–14 August 20275%91%2.066°
Orionids21–22 October 202710%58%2.852°
Leonids17–18 November 202710%82%1.358°
Geminids14–15 December 20278%97%0.069°

* 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