Will it be clear for stargazing in Reykjavík tonight?

Cloudy for the rest of the night; the Moon (67% lit) is up all night. That is the hourly total-cloud forecast for Reykjavík, Iceland on the night of 1 October 2026, read inside the darkest hours: under 25% cloud counts as clear and 65% or more as cloudy. Rain or showers possible around 04:00. Most of the cloud is low cloud, which blocks the sky outright.

When does it get dark in Reykjavík tonight?

In Reykjavík, Iceland on the night of 1 October 2026, astronomical darkness begins at 21:40 and lasts until 04:55 GMT — 7 h 15 min of fully dark sky. The Sun sets at 18:56, and nautical twilight ends at 20:39.

Is the Moon up tonight in Reykjavík?

On the night of 1 October 2026 in Reykjavík, Iceland, the Moon is a waning gibbous, 67% illuminated. It does not rise or set in the next 24 hours, GMT. 0 min of the dark window is moon-free.

Which planets can I see from Reykjavík tonight?

From Reykjavík, Iceland on the night of 1 October 2026: Mars (01:50–04:55, highest 31° in the E at 04:55, magnitude 1.1); Jupiter (03:40–04:55, highest 18° in the E at 04:55, magnitude -1.9); Saturn (21:40–04:55, highest 28° in the S at 01:30, magnitude 0.2). Times are GMT; all are visible to the naked eye.

Stargazing forecast

Stargazing forecast for Reykjavík, Iceland

Thu 1 Oct night
64.135° N, 21.895° W
37 m
GMT · Atlantic/Reykjavik

Open the live forecast — sky score, seeing, 7 nights

Tonight at a glance

Cloudy for the rest of the night; the Moon (67% lit) is up all night.

Rain or showers possible around 04:00.
Most of the cloud is low cloud, which blocks the sky outright.
Dew risk: the temperature comes within 2 °C (3.6 °F) of the dew point by 04:00 — optics may fog without a dew heater.

Updated 04:13 GMT (2 Oct, 04:13 UTC) · MET Norway forecast issued 2 Oct, 01:20 UTC

Cloud cover: 69%Cloudy
Dark hours: 7 h 15 min21:40–04:55
Moon: 67%0 min moon-free
Wind: 17 km/hLight
Low temperature: 8°CDuring the dark hours
Dew risk: HighAir comes within 1° of the dew point

Photo: Milky Way over Paranal — ESO/A. Ghizzi Panizza (www.albertoghizzipanizza.com), CC BY 4.0

Hourly forecast

Cloud by layer, hour by hour. Darker blue means clearer sky; each cell shows its percentage. Low cloud blocks the sky outright; thin high cloud only dims it.

Hourly cloud cover (%) and conditions tonight in Reykjavík
GMT	Fri 2																				Sat 3
Hour	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19
Sky: Dark 04–05, Astronomical twilight 05–06, Nautical twilight 06–07, Civil twilight 07–08, Daylight 08–19, Civil twilight 19–20, Nautical twilight 20–21, Astronomical twilight 21–22, Dark 22–05, Astronomical twilight 05–06, Nautical twilight 06–07, Civil twilight 07–08, Daylight 08–19, Civil twilight 19–20
Total cloud	69	81	100	100	81	63	87	89	82	100	100	84	82	70	44	52	47	70	98	98	97	98	100	100	99	100	100	100	100	100	100	100	100	100	100	100	100	98	100	98
Low cloud	42	45	100	75	31	39	57	24	58	73	83	64	47	25	29	35	23	13	11	23	12	11	57	37	56	78	74	99	98	100	100	100	100	100	100	100	100	97	77	84
Mid cloud	32	73	97	100	64	45	51	59	55	100	100	70	58	27	26	36	34	68	78	29	32	59	100	100	88	96	73	100	100	100	100	100	100	98	99	100	100	75	100	87
High cloud	26	6	0	0	20	2	40	66	12	8	0	16	43	48	7	8	10	2	85	95	95	95	0	0	84	95	99	100	100	99	99	96	67	70	99	2	0	0	0	0
Sun & Moon
Temperature °C	8	7	8	8	8	8	8	8	8	9	8	8	9	9	8	7	7	7	7	7	6	7	6	7	7	8	8	8	8	8	9	10	10	10	10	10	10	10	9	9
Dew point °C; dew risk (within 2° of the dew point): 04, 05, 06, 07, 08, 09, 10, 14, 15, 16, 19, 20, 21, 22, 23, 00, 01, 03, 04, 05, 07, 08, 09, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19	7	6	7	7	6	6	6	6	6	5	6	7	7	6	6	5	5	5	5	5	5	5	4	5	6	6	6	6	7	7	8	8	8	9	9	9	9	9	8	8
Wind km/h	17	15	18	22	23	26	29	28	30	25	24	21	17	15	15	15	15	15	17	18	19	19	19	21	23	22	25	31	32	31	30	30	32	34	34	32	28	27	30	27
Rain (mm)	0.2	1.0	0.6	0.2	0	0.2	0.1	0.4	0.2	0.6	0.6	0.1	0	0.1	0	0	0	0	0	0	0	0.2	0.1	0	0	0	0.1	0.5	0.9	1.3	1.7	1.7	1.5	2.8	3.5	2.0	1.2	0.9	0.9	0.3

Cloud cover0–9%10–24%25–44%45–64%65–84%85–100%

SkyDaylightCivil twilightNautical twilightAstronomical twilightDark

Sun altitudeMoon altitude12dew risk (within 2° of the dew point)Scroll sideways for the next 40 hours →

Weather data: MET Norway (CC BY 4.0)

Next 7 nights

Average cloud during each night's dark hours, with the Moon. The first two to three nights use hourly data; later nights use MET Norway's 6-hourly steps and are less certain.

Tonight1 Oct
69%Cloudy
67% · 0 min moon-free
21:40–04:55
Fri2 Oct
95%Cloudy
56% · 0 min moon-free
21:36–04:58
Sat3 Oct
100%Cloudy
44% · 0 min moon-free
21:32–05:01
Sun4 Oct
100%Cloudy
33% · 1 h 30 min moon-free
21:28–05:05
6-hourly data
Mon5 Oct
71%Cloudy
23% · 3 h 40 min moon-free
21:24–05:08
6-hourly data
Tue6 Oct
58%Partly cloudy
15% · 5 h 40 min moon-free
21:20–05:12
6-hourly data
Wed7 Oct
89%Cloudy
8% · 7 h 30 min moon-free
21:16–05:15
6-hourly data

Sun & twilight

Twilight ends in three steps. Faint galaxies and the Milky Way need astronomical darkness, when the Sun is more than 18° below the horizon.

Sunset: 18:56
Civil dusk (−6°): 19:43
Nautical dusk (−12°): 20:39
Astronomical dusk (−18°): 21:40
Astronomical dawn (−18°): 04:55
Nautical dawn (−12°): 05:55
Civil dawn (−6°): 06:51
Sunrise: 07:39

Dark window: 21:40 – 04:55 GMT (7 h 15 min)

The Moon

Waning Gibbous

Illuminated: 67%
Age: 20.6 days
Moonrise: none in this 24 h
Moonset: none in this 24 h
Moon-free dark time: 0 min

Next phases

Last QuarterSat 3 Oct13:25
New MoonSat 10 Oct15:50
First QuarterSun 18 Oct16:13
Full MoonMon 26 Oct04:12

Next lunar eclipse visible here: Partial · Wed 12 Jan 2028, 04:13 · Moon 41° up
Next solar eclipse visible here: Partial · Wed 26 Jan 2028, 16:24 · 16% of the Sun covered

Planets tonight

Naked-eye planets that climb more than 10° above the horizon during the astronomically dark hours.

Altitude through the night

Planets tonight — Reykjavík
Planet	Rises	Transits (altitude)	Sets	Best seen tonight	Brightness	In
JupiterVisible	01:48	10:12 · 41°	18:40	03:40–04:55, E	mag -1.9	Leo
SaturnVisible	19:09	01:30 · 28°	07:51	21:40–04:55, S	mag 0.2	Cetus
MarsVisible	23:30	09:03 · 46°	18:37	01:50–04:55, E	mag 1.1	Cancer
Venus	12:22	15:00 · 5°	17:38	Below 10°	mag -4.7	Virgo
Mercury	10:40	14:40 · 12°	18:45	Below 10°	mag -0.1	Virgo

Lower magnitude = brighter. Venus and Jupiter outshine every star.

Sky events — next 90 days

Moon phases, seasons, planet highlights and eclipses, with times for this city.

Oct4Sun
Planet · 12:12
Saturn at opposition
Saturn is opposite the Sun: up all night, and at its closest and brightest for the year.
Oct10Sat
Moon · 15:50
New Moon
Darkest skies of the month for galaxies and the Milky Way.
Oct12Mon
Planet · 10:06
Mercury at greatest evening elongation
25° from the Sun — the best evening view of Mercury, low in the west after sunset.
Oct26Mon
Moon · 04:12
Full Moon
Bright moonlight all night; best for the Moon itself.
Oct28Wed
Moon · 18:04
Moon at perigee near full (a “supermoon”)
Closest to Earth this month: 364,397 km.
Nov9Mon
Moon · 07:02
New Moon
Darkest skies of the month for galaxies and the Milky Way.
Nov24Tue
Moon · 14:54
Full Moon
Bright moonlight all night; best for the Moon itself.
Nov25Wed
Moon · 21:02
Moon at perigee near full (a “supermoon”)
Closest to Earth this month: 359,335 km.
Dec9Wed
Moon · 00:52
New Moon
Darkest skies of the month for galaxies and the Milky Way.
Dec21Mon
Season · 20:50
Winter solstice
The longest night of the year — the most hours of darkness.
Dec24Thu
Moon · 01:28
Full Moon
Bright moonlight all night; best for the Moon itself.
Dec24Thu
Moon · 08:32
Moon at perigee near full (a “supermoon”)
Closest to Earth this month: 356,641 km.

Quick answers

Will it be clear for stargazing in Reykjavík tonight?: Cloudy for the rest of the night; the Moon (67% lit) is up all night. That is the hourly total-cloud forecast for Reykjavík, Iceland on the night of 1 October 2026, read inside the darkest hours: under 25% cloud counts as clear and 65% or more as cloudy. Rain or showers possible around 04:00. Most of the cloud is low cloud, which blocks the sky outright.
When does it get dark in Reykjavík tonight?: In Reykjavík, Iceland on the night of 1 October 2026, astronomical darkness begins at 21:40 and lasts until 04:55 GMT — 7 h 15 min of fully dark sky. The Sun sets at 18:56, and nautical twilight ends at 20:39.
Is the Moon up tonight in Reykjavík?: On the night of 1 October 2026 in Reykjavík, Iceland, the Moon is a waning gibbous, 67% illuminated. It does not rise or set in the next 24 hours, GMT. 0 min of the dark window is moon-free.
Which planets can I see from Reykjavík tonight?: From Reykjavík, Iceland on the night of 1 October 2026: Mars (01:50–04:55, highest 31° in the E at 04:55, magnitude 1.1); Jupiter (03:40–04:55, highest 18° in the E at 04:55, magnitude -1.9); Saturn (21:40–04:55, highest 28° in the S at 01:30, magnitude 0.2). Times are GMT; all are visible to the naked eye.

Forecast details

Location: 64.135° N, 21.895° W
Elevation: 37 m
Time zone: Atlantic/Reykjavik (GMT)
Weather model: MET Norway Locationforecast 2.0
Forecast issued: 2 Oct, 01:20 UTC
Next update expected: ≈ 2 Oct, 04:44 UTC
Page generated: 2 Oct, 04:13 UTC
Astronomy: Computed with astronomy-engine for these coordinates

Computed for 64.135° N, 21.895° W, elevation 37 m, time zone Atlantic/Reykjavik. City centres are light-polluted; the times here apply anywhere within about 50 km, so drive out to darker skies.

Sun, Moon and planet positions are calculated with astronomy-engine. Twilight uses the Sun's geometric centre; sunrise and sunset use the upper limb with standard refraction.

The summary line restates the hourly total-cloud forecast inside the dark window (clear under 25%, cloudy from 65%) and the Moon's times. It is not a score — the Tonight score lives in the app.

Seeing and transparency forecasts are coming to the app first (North America via Environment Canada's model, a worldwide beta elsewhere).

Nearby city forecasts

All forecasts in Iceland Moon phase calendar Telescope FOV calculator

Get tonight's score on your phone

The Astronight app adds an hourly sky score, the best window, seeing and transparency, and alerts for clear nights.

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