Stargazing at Monfragüe National Park: when is the sky clear and dark?
August is the best month for stargazing at Monfragüe National Park: on average 87 clear, moonless hours of full darkness, and 56% of nights have at least two of them (ERA5, 2006–2025). The darkest spot we found there is darker than 74% of Europe’s land (NASA VIIRS 2025).
national park · Spain
Month by month
| Month | Nights with ≥ 2 such hours | Clear moonless dark hours | Moonless dark hours | Of them clear |
|---|---|---|---|---|
| January | 37% | 69 | 180 | 38% |
| February | 38% | 62 | 142 | 44% |
| March | 34% | 59 | 140 | 42% |
| April | 30% | 45 | 115 | 39% |
| May | 37% | 50 | 94 | 54% |
| June | 40% | 46 | 77 | 60% |
| July | 58% | 78 | 94 | 83% |
| August | 56% | 87 | 111 | 78% |
| September | 46% | 73 | 129 | 56% |
| October | 37% | 64 | 156 | 41% |
| November | 37% | 69 | 168 | 41% |
| December | 40% | 77 | 182 | 42% |
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 than | 74% of Europe’s land |
|---|---|
| Light pollution | dark rural sky (darkest 20–50 %) |
| Sky-glow index (own, VIIRS) — Darkest spot we found | 0.97 |
| Sky-glow index (own, VIIRS) — at the official map point | 1.34 |
| Sky-glow index (own, VIIRS) — median across the area | 1.39 |
| Darkest spot we found | 39.792, -5.908 (map) — within the OSM boundary |
Next new moons
| New moon | Night | Moonless dark hours that night | Typical share of good nights that month |
|---|---|---|---|
| 9 November 2026 | 8–9 November 2026 | 10.7 | 37% |
| 9 December 2026 | 8–9 December 2026 | 11.3 | 40% |
| 7 January 2027 | 7–8 January 2027 | 11.2 | 37% |
| 6 February 2027 | 6–7 February 2027 | 10.5 | 38% |
| 8 March 2027 | 7–8 March 2027 | 9.3 | 34% |
| 6 April 2027 | 6–7 April 2027 | 8.0 | 30% |
| 6 May 2027 | 5–6 May 2027 | 6.5 | 37% |
| 4 June 2027 | 4–5 June 2027 | 5.2 | 40% |
| 4 July 2027 | 3–4 July 2027 | 5.0 | 58% |
| 2 August 2027 | 1–2 August 2027 | 6.2 | 56% |
| 31 August 2027 | 31 August 2027 – 1 September 2027 | 7.7 | 56% |
| 30 September 2027 | 29–30 September 2027 | 9.2 | 46% |
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
| Shower | Peak night | Chance of a clear peak night | Moon lit | Moonless dark hours (Sun < −12°) | Radiant max. height |
|---|---|---|---|---|---|
| Leonids | 17–18 November 2026 | 65% | 55% | 6.0 | 70° |
| Geminids * | 13–14 December 2026 | 48% | 21% | 9.7 | 83° |
| Geminids * | 14–15 December 2026 | 48% | 29% | 8.7 | 83° |
| Quadrantids | 3–4 January 2027 | 53% | 13% | 11.0 | 65° |
| Lyrids | 22–23 April 2027 | 53% | 95% | 1.2 | 84° |
| Eta Aquariids * | 5–6 May 2027 | 63% | 0% | 7.8 | 24° |
| Eta Aquariids * | 6–7 May 2027 | 60% | 1% | 7.8 | 24° |
| Perseids * | 12–13 August 2027 | 92% | 84% | 2.8 | 65° |
| Perseids * | 13–14 August 2027 | 90% | 91% | 2.0 | 66° |
| Orionids | 21–22 October 2027 | 53% | 58% | 3.8 | 66° |
| Leonids * | 17–18 November 2027 | 65% | 82% | 2.2 | 70° |
| Leonids * | 18–19 November 2027 | 63% | 72% | 3.3 | 71° |
| Geminids | 14–15 December 2027 | 48% | 98% | 0.0 | 83° |
* 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.