Dark Sky Odds

Stargazing at Caldera de Taburiente National Park: when is the sky clear and dark?

August is the best month for stargazing at Caldera de Taburiente National Park: on average 86 clear, moonless hours of full darkness, and 55% of nights have at least two of them (ERA5, 2006–2025). The darkest spot we found there is darker than 83% 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 · Spain

AugustBest month
708Clear moonless dark hours a year
83%darker than … of Europe’s land
55%Nights with ≥ 2 such hours (August)

Month by month

MonthNights with ≥ 2 such hoursClear moonless dark hoursMoonless dark hoursOf them clear
January37%6416439%
February36%5314237%
March33%5014934%
April33%4512835%
May29%3811234%
June38%4810645%
July50%7011461%
August55%8612867%
September45%7213852%
October41%6315441%
November34%5416832%
December39%6617238%

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 than83% of Europe’s land
Light pollutionvery dark (darkest 5–20 %)
Sky-glow index (own, VIIRS) — Darkest spot we found0.51
Sky-glow index (own, VIIRS) — at the official map point0.48
Sky-glow index (own, VIIRS) — median across the area0.92
Darkest spot we found28.758, -17.875 (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 202610.334%
9 December 20268–9 December 202610.839%
7 January 20277–8 January 202710.837%
6 February 20276–7 February 202710.336%
8 March 20277–8 March 20279.733%
6 April 20276–7 April 20278.733%
6 May 20275–6 May 20277.829%
4 June 20274–5 June 20277.038%
4 July 20273–4 July 20277.050%
2 August 20271–2 August 20277.555%
31 August 202731 August 2027 – 1 September 20278.555%
30 September 202729–30 September 20279.545%

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 202665%56%5.577°
Geminids *13–14 December 202660%21%9.086°
Geminids *14–15 December 202657%29%8.086°
Quadrantids3–4 January 202772%12%10.056°
Lyrids22–23 April 202750%95%1.285°
Eta Aquariids *5–6 May 202767%0%8.834°
Eta Aquariids *6–7 May 202762%1%8.835°
Perseids *12–13 August 202780%84%2.858°
Perseids *13–14 August 202773%91%1.858°
Orionids21–22 October 202767%58%4.377°
Leonids17–18 November 202765%82%2.377°
Geminids14–15 December 202757%97%0.086°

* 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