Dark Sky Odds

Stargazing at North York Moors National Park: when is the sky clear and dark?

December is the best month for stargazing at North York Moors National Park: on average 33 clear, moonless hours of full darkness, and 20% 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

International Dark Sky Reserve · national park · United Kingdom · DarkSky International

DecemberBest month
208Clear moonless dark hours a year
63%darker than … of Europe’s land
20%Nights with ≥ 2 such hours (December)

Month by month

MonthNights with ≥ 2 such hoursClear moonless dark hoursMoonless dark hoursOf them clear
January18%2718215%
February16%2214515%
March15%2112517%
April14%167522%
May2%2923%
June0%00—
July0%00—
August11%125722%
September15%2111019%
October16%2515216%
November18%2717316%
December20%3319917%

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 than63% of Europe’s land
Light pollutiondark rural sky (darkest 20–50 %)
Sky-glow index (own, VIIRS) — Darkest spot we found1.92
Sky-glow index (own, VIIRS) — at the official map point2.03
Sky-glow index (own, VIIRS) — median across the area3.25
Darkest spot we found54.375, -0.458 (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 202611.018%
9 December 20268–9 December 202612.020%
7 January 20277–8 January 202712.018%
6 February 20276–7 February 202710.716%
8 March 20277–8 March 20278.815%
6 April 20276–7 April 20276.014%
6 May 20275–6 May 20272.02%
4 June 20274–5 June 20270.00%
4 July 20273–4 July 20270.00%
2 August 20271–2 August 20270.011%
31 August 202731 August 2027 – 1 September 20275.711%
30 September 202729–30 September 20278.315%

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 202640%55%7.058°
Geminids *13–14 December 202628%20%11.069°
Geminids *14–15 December 202630%29%9.769°
Quadrantids3–4 January 202728%13%12.874°
Lyrids22–23 April 202728%95%1.568°
Eta Aquariids *5–6 May 202723%0%5.27°
Eta Aquariids *6–7 May 202727%1%5.06°
Perseids *12–13 August 202723%84%3.265°
Perseids *13–14 August 202720%90%2.066°
Orionids21–22 October 202733%58%2.852°
Leonids17–18 November 202740%82%1.258°
Geminids14–15 December 202730%98%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