Will it be clear for stargazing in Santiago tonight?

Mostly clear after 04:00; the Moon (54% lit) rises at 02:42. That is the hourly total-cloud forecast for Santiago, Chile on the night of 2 October 2026, read inside the darkest hours: under 25% cloud counts as clear and 65% or more as cloudy. Rain or showers possible from about 21:00.

When does it get dark in Santiago tonight?

In Santiago, Chile on the night of 2 October 2026, astronomical darkness begins at 21:10 and lasts until 05:52 GMT-3 — 8 h 43 min of fully dark sky. The Sun sets at 19:45, and nautical twilight ends at 20:40.

Is the Moon up tonight in Santiago?

On the night of 2 October 2026 in Santiago, Chile, the Moon is a waning gibbous, 54% illuminated. It rises at 02:42, GMT-3. 5 h 35 min of the dark window is moon-free.

Which planets can I see from Santiago tonight?

From Santiago, Chile on the night of 2 October 2026: Venus (21:10–21:10, highest 12° in the W at 21:10, magnitude -4.7); Mars (05:10–05:52, highest 17° in the NE at 05:52, magnitude 1.1); Saturn (21:10–05:52, highest 55° in the N at 01:40, magnitude 0.2). Times are GMT-3; all are visible to the naked eye.

Stargazing forecast

Stargazing forecast for Santiago, Chile

Fri 2 Oct night
33.457° S, 70.648° W
556 m
GMT-3 · America/Santiago

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

Tonight at a glance

Mostly clear after 04:00; the Moon (54% lit) rises at 02:42.

Rain or showers possible from about 21:00.
Dew risk: the temperature comes within 2 °C (3.6 °F) of the dew point by 01:00 — optics may fog without a dew heater.

Updated 16:01 GMT-3 (2 Oct, 19:01 UTC) · MET Norway forecast issued 2 Oct, 17:18 UTC

Cloud cover: 43%Partly cloudy
Dark hours: 8 h 43 min21:10–05:52
Moon: 54%5 h 35 min moon-free
Wind: 4 km/hCalm
Low temperature: 9°CDuring the dark hours
Dew risk: HighAir comes within 2° 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 Santiago
GMT-3	Fri 2							Sat 3																								Sun 4
Hour	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	20	21	22	23	00	01	02	03	04	05	06	07	08
Sky: Daylight 17–20, Nautical twilight 20–21, Dark 21–06, Nautical twilight 06–07, Daylight 07–20, Nautical twilight 20–21, Dark 21–06, Nautical twilight 06–07, Daylight 07–09
Total cloud	65	87	91	84	97	77	47	31	47	14	31	23	23	20	19	15	12	9	6	10	9	15	8	14	31	16	40	32	41	20	24	30	81	92	97	99	99	99	98	91
Low cloud	22	32	35	63	62	50	27	17	24	12	24	23	23	20	19	15	12	8	6	10	8	6	2	8	16	9	32	26	34	16	16	29	35	28	20	9	2	0	0	0
Mid cloud	52	61	56	65	88	53	32	26	38	3	9	1	0	0	0	1	1	1	0	0	2	9	6	7	16	11	13	13	10	5	1	0	0	17	34	66	84	90	91	91
High cloud	16	54	71	3	6	1	0	0	0	0	2	0	0	0	0	0	0	0	0	0	0	2	0	1	9	0	0	0	0	0	9	1	71	88	95	99	99	98	95	18
Sun & Moon
Temperature °C	17	15	14	13	12	12	12	12	11	11	10	10	9	9	9	10	11	13	15	16	17	18	18	18	18	16	16	14	13	12	11	11	11	10	10	10	10	10	10	10
Dew point °C; dew risk (within 2° of the dew point): 01, 02, 03, 04, 05, 06, 00, 01, 02, 03	8	9	10	10	9	10	10	10	10	9	9	8	8	7	7	6	7	8	9	9	9	8	8	8	8	9	9	9	9	9	9	9	9	9	8	8	8	8	8	8
Wind km/h	12	13	11	8	7	7	6	4	3	2	3	2	2	2	3	3	3	4	5	7	9	8	9	9	10	10	10	13	9	7	4	2	2	3	2	3	3	3	3	3
Rain (mm)	1.3	0.5	1.1	0.7	0.5	0.3	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0.1	0.5	0.6	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0

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.

Tonight2 Oct
43%Partly cloudy
54% · 5 h 30 min moon-free
21:10–05:52
Sat3 Oct
65%Partly cloudy
43% · 6 h 20 min moon-free
21:10–05:51
Sun4 Oct
58%Partly cloudy
32% · 7 h 10 min moon-free
21:11–05:49
6-hourly data
Mon5 Oct
100%Cloudy
22% · 7 h 40 min moon-free
21:12–05:48
6-hourly data
Tue6 Oct
96%Cloudy
13% · 8 h 10 min moon-free
21:13–05:46
6-hourly data
Wed7 Oct
37%Partly cloudy
7% · 8 h 31 min moon-free
21:14–05:45
6-hourly data
Thu8 Oct
56%Partly cloudy
2% · 8 h 29 min moon-free
21:15–05:43
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: 19:45
Civil dusk (−6°): 20:10
Nautical dusk (−12°): 20:40
Astronomical dusk (−18°): 21:10
Astronomical dawn (−18°): 05:52
Nautical dawn (−12°): 06:22
Civil dawn (−6°): 06:51
Sunrise: 07:17

Dark window: 21:10 – 05:52 GMT-3 (8 h 43 min)

The Moon

Waning Gibbous

Illuminated: 54%
Age: 21.3 days
Moonrise: 02:42
Moonset: none in this 24 h
Moon-free dark time: 5 h 35 min

Next phases

Last QuarterSat 3 Oct10:25
New MoonSat 10 Oct12:50
First QuarterSun 18 Oct13:13
Full MoonMon 26 Oct01:12

Next lunar eclipse visible here: Partial · Wed 12 Jan 2028, 01:13 · Moon 32° up
Next solar eclipse visible here: Partial · Sat 6 Feb 2027, 12:04 · 62% 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 — Santiago
Planet	Rises	Transits (altitude)	Sets	Best seen tonight	Brightness	In
VenusVisible	08:06	15:11 · 78°	22:12	21:10–21:10, W	mag -4.7	Virgo
SaturnVisible	19:44	01:41 · 55°	07:37	21:10–05:52, N	mag 0.2	Cetus
MarsVisible	04:11	09:16 · 36°	14:23	05:10–05:52, NE	mag 1.1	Cancer
Jupiter	05:04	10:24 · 41°	15:47	Below 10°	mag -1.9	Leo
Mercury	08:14	14:56 · 71°	21:39	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 · 09:12
Saturn at opposition
Saturn is opposite the Sun: up all night, and at its closest and brightest for the year.
Oct10Sat
Moon · 12:50
New Moon
Darkest skies of the month for galaxies and the Milky Way.
Oct12Mon
Planet · 07:06
Mercury at greatest evening elongation
25° from the Sun — the best evening view of Mercury, low in the west after sunset.
Oct26Mon
Moon · 01:12
Full Moon
Bright moonlight all night; best for the Moon itself.
Oct28Wed
Moon · 15:04
Moon at perigee near full (a “supermoon”)
Closest to Earth this month: 364,397 km.
Nov9Mon
Moon · 04:02
New Moon
Darkest skies of the month for galaxies and the Milky Way.
Nov24Tue
Moon · 11:54
Full Moon
Bright moonlight all night; best for the Moon itself.
Nov25Wed
Moon · 18:02
Moon at perigee near full (a “supermoon”)
Closest to Earth this month: 359,335 km.
Dec8Tue
Moon · 21:52
New Moon
Darkest skies of the month for galaxies and the Milky Way.
Dec21Mon
Season · 17:50
Summer solstice
The shortest night of the year — the fewest dark hours.
Dec23Wed
Moon · 22:28
Full Moon
Bright moonlight all night; best for the Moon itself.
Dec24Thu
Moon · 05:32
Moon at perigee near full (a “supermoon”)
Closest to Earth this month: 356,641 km.

Quick answers

Will it be clear for stargazing in Santiago tonight?: Mostly clear after 04:00; the Moon (54% lit) rises at 02:42. That is the hourly total-cloud forecast for Santiago, Chile on the night of 2 October 2026, read inside the darkest hours: under 25% cloud counts as clear and 65% or more as cloudy. Rain or showers possible from about 21:00.
When does it get dark in Santiago tonight?: In Santiago, Chile on the night of 2 October 2026, astronomical darkness begins at 21:10 and lasts until 05:52 GMT-3 — 8 h 43 min of fully dark sky. The Sun sets at 19:45, and nautical twilight ends at 20:40.
Is the Moon up tonight in Santiago?: On the night of 2 October 2026 in Santiago, Chile, the Moon is a waning gibbous, 54% illuminated. It rises at 02:42, GMT-3. 5 h 35 min of the dark window is moon-free.
Which planets can I see from Santiago tonight?: From Santiago, Chile on the night of 2 October 2026: Venus (21:10–21:10, highest 12° in the W at 21:10, magnitude -4.7); Mars (05:10–05:52, highest 17° in the NE at 05:52, magnitude 1.1); Saturn (21:10–05:52, highest 55° in the N at 01:40, magnitude 0.2). Times are GMT-3; all are visible to the naked eye.

Forecast details

Location: 33.457° S, 70.648° W
Elevation: 556 m
Time zone: America/Santiago (GMT-3)
Weather model: MET Norway Locationforecast 2.0
Forecast issued: 2 Oct, 17:18 UTC
Next update expected: ≈ 2 Oct, 18:49 UTC
Page generated: 2 Oct, 19:01 UTC
Astronomy: Computed with astronomy-engine for these coordinates

Computed for 33.457° S, 70.648° W, elevation 556 m, time zone America/Santiago. 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 Chile 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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