Stargazing forecast for Reykjavík
Sun, Jul 26 – Mon, Aug 24 · GMT · 64.15°N, 21.94°W · Calculated July 26, 2026
Reykjavík gets no astronomical darkness at all in this window. At latitude 64.1°N the sun stays less than 18° below the horizon every night between Sun, Jul 26 and Mon, Aug 24, so the sky never gets fully dark — only the brightest stars, planets and noctilucent clouds show. Full darkness returns around Wed, Sep 2.
Darkness returns
Darkness returns
Wed, Sep 2
Moon phases in this window
- Full moon — Wed, Jul 29 14:35
- Last quarter — Thu, Aug 6 02:21
- New moon — Wed, Aug 12 17:36
- First quarter — Thu, Aug 20 02:46
Night-by-night
| Date | Sunset | Dark sky starts | Dark sky ends | Astronomical darkness | Moon-free darkness | Illumination | Rating |
|---|---|---|---|---|---|---|---|
| Sun, Jul 26 | 22:50 | — | — | None | None | 94% | — |
| Mon, Jul 27 | 22:47 | — | — | None | None | 97% | — |
| Tue, Jul 28 | 22:44 | — | — | None | None | 100% | — |
| Wed, Jul 29 | 22:41 | — | — | None | None | 100% | — |
| Thu, Jul 30 | 22:37 | — | — | None | None | 98% | — |
| Fri, Jul 31 | 22:34 | — | — | None | None | 94% | — |
| Sat, Aug 1 | 22:31 | — | — | None | None | 89% | — |
| Sun, Aug 2 | 22:28 | — | — | None | None | 81% | — |
| Mon, Aug 3 | 22:24 | — | — | None | None | 72% | — |
| Tue, Aug 4 | 22:21 | — | — | None | None | 62% | — |
| Wed, Aug 5 | 22:17 | — | — | None | None | 51% | — |
| Thu, Aug 6 | 22:14 | — | — | None | None | 40% | — |
| Fri, Aug 7 | 22:11 | — | — | None | None | 29% | — |
| Sat, Aug 8 | 22:07 | — | — | None | None | 19% | — |
| Sun, Aug 9 | 22:04 | — | — | None | None | 10% | — |
| Mon, Aug 10 | 22:00 | — | — | None | None | 4% | — |
| Tue, Aug 11 | 21:57 | — | — | None | None | 1% | — |
| Wed, Aug 12 | 21:53 | — | — | None | None | 0% | — |
| Thu, Aug 13 | 21:50 | — | — | None | None | 2% | — |
| Fri, Aug 14 | 21:46 | — | — | None | None | 7% | — |
| Sat, Aug 15 | 21:43 | — | — | None | None | 13% | — |
| Sun, Aug 16 | 21:40 | — | — | None | None | 21% | — |
| Mon, Aug 17 | 21:36 | — | — | None | None | 30% | — |
| Tue, Aug 18 | 21:33 | — | — | None | None | 39% | — |
| Wed, Aug 19 | 21:29 | — | — | None | None | 49% | — |
| Thu, Aug 20 | 21:26 | — | — | None | None | 59% | — |
| Fri, Aug 21 | 21:22 | — | — | None | None | 68% | — |
| Sat, Aug 22 | 21:18 | — | — | None | None | 76% | — |
| Sun, Aug 23 | 21:15 | — | — | None | None | 84% | — |
| Mon, Aug 24 | 21:11 | — | — | None | None | 90% | — |
See tonight’s conditions in Reykjavík
How to read this table
Each row is one night, labelled by the evening it starts. Astronomical darkness is the time the sun spends more than 18° below the horizon. Moon-free darkness subtracts any part of that window where the moon is above the horizon, which is the figure that actually limits what you can see. Ratings are computed from moon-free hours relative to the season’s maximum at this latitude, so a rating of “Good” in June in Reykjavík does not mean the same number of hours as “Good” in December.
Weather is not included. These figures assume a clear sky.
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