Rio de Janeiro, Brazil · America/Sao_Paulo

Live lunar conditions

Is tonight a Moon night?

A workable Moon night. The best window is 17:00–21:00; cloud cover looks cooperative.

Rio de Janeiro· BrazilTuesday, 10 November 2026 · 20:47 · Sao Paulo

Tonight's verdict

A workable Moon night

Weather-adjusted

59/100

Fair

Best window 17:00–21:00 · 4 hrs · Fair (59/100)

Look WSW · 24° above the horizon · 4 hrs

Phase

Waxing Crescent

Illumination

Next moonrise

Tomorrow 06:22

Next moonset

Tomorrow 20:31

View tonight's outlookHow the score works

Open-Meteo hourly forecast for 21:00 local · cached up to 20 min

Current moon

Phase-correct

Waxing Crescent · 3% lit

Altitude -13° · Azimuth 234° · 402,220 km

Southern-hemisphere orientation · NASA LRO surface

Tonight's outlook

The next 24 hours, without the guesswork

A deterministic viewing score, a recommended window, and the weather that could change the plan. All times are local to Rio de Janeiro.

Read the scoring method

Best viewing window

17:00–21:00

4 hrs · look WSW · 24° altitude · 10% mean cloud

Wed 11 Nov · local time in Rio de Janeiro

NightSee it on the timeline

Viewing score

Cloud-weighted, per hour

Weather

59/100

Fair

Mostly clear during the best window

Not a scientific measurement. The index favours a Moon that is easy to see, not necessarily the sharpest surface detail.

Best time to look

Best contiguous window in the next 24 hours

Night

17:00–21:00

4 hrs · look WSW · 24° altitude

Starts Wed 11 Nov local time. The window is the longest qualifying run at or above 50/100, selected by mean score.

Weather snapshot

Hourly forecast for the selected location

Open-Meteo

Overcast

100%

Cloud cover · 20% chance of precipitation

21°C nowValid 21:00 local

Moon altitude & cloud cover

Next 24 hours · local time · cloud bars rise from the horizon

Hover or focus an hour for details

Moon altitude Cloud cover Daylight / twilight Now

Weather: Open-Meteo

Wed 11 Nov · 17:00Moon 43°Cloud 23%Score 55 (Fair)Daylight

Moon altitude is in degrees above the horizon. Cloud-cover bars run from the bottom of the chart. The highlighted band is the recommended contiguous viewing window; the gold line marks the current local time. Times are local to the selected location.

Hourly Moon viewing forecast
Local time	Moon altitude	Cloud cover	Precipitation chance	Score	Light
Tue 10 Nov 21:00	-16 degrees	100%	20%	0 out of 100	Night
Tue 10 Nov 22:00	-25 degrees	93%	13%	0 out of 100	Night
Tue 10 Nov 23:00	-33 degrees	95%	6%	0 out of 100	Night
Wed 11 Nov 00:00	-39 degrees	98%	0%	0 out of 100	Night
Wed 11 Nov 01:00	-41 degrees	98%	0%	0 out of 100	Night
Wed 11 Nov 02:00	-39 degrees	76%	0%	0 out of 100	Night
Wed 11 Nov 03:00	-33 degrees	89%	0%	0 out of 100	Night
Wed 11 Nov 04:00	-25 degrees	55%	0%	0 out of 100	Night
Wed 11 Nov 05:00	-16 degrees	10%	0%	0 out of 100	Daylight
Wed 11 Nov 06:00	-5 degrees	26%	0%	0 out of 100	Daylight
Wed 11 Nov 07:00	7 degrees	47%	0%	26 out of 100	Daylight
Wed 11 Nov 08:00	19 degrees	48%	0%	34 out of 100	Daylight
Wed 11 Nov 09:00	31 degrees	60%	0%	37 out of 100	Daylight
Wed 11 Nov 10:00	44 degrees	33%	0%	55 out of 100	Daylight
Wed 11 Nov 11:00	57 degrees	41%	0%	55 out of 100	Daylight
Wed 11 Nov 12:00	70 degrees	63%	0%	45 out of 100	Daylight
Wed 11 Nov 13:00	83 degrees	65%	0%	44 out of 100	Daylight
Wed 11 Nov 14:00	81 degrees	85%	0%	35 out of 100	Daylight
Wed 11 Nov 15:00	69 degrees	96%	0%	30 out of 100	Daylight
Wed 11 Nov 16:00	56 degrees	88%	0%	34 out of 100	Daylight
Wed 11 Nov 17:00	43 degrees	23%	0%	55 out of 100	Daylight
Wed 11 Nov 18:00	30 degrees	3%	0%	55 out of 100	Daylight
Wed 11 Nov 19:00	18 degrees	4%	0%	61 out of 100	Night
Wed 11 Nov 20:00	6 degrees	8%	0%	63 out of 100	Night
Wed 11 Nov 21:00	-6 degrees	25%	0%	0 out of 100	Night

Why this recommendation

Waxing Crescent at 3% illumination. Only a slim crescent is lit; look soon after sunset or before sunrise, close to the horizon.
The Moon climbs to about 83° around 13:00.
Next moonrise: Wed 11 Nov at 06:22.
Forecast cloud cover averages 10% during the best window, with a 0% chance of precipitation.

Limitations & methodShow

The viewing score is a convenience index, not a scientific measurement of sky quality.
The Moon disc on this page is phase-correct but its orientation and surface detail are schematic; libration and parallactic angle are not modelled.

Full methodology →

Local context

Moonwatching from Rio de Janeiro

At 22.9° S, the Moon follows a relatively high arc. The disc is shown rotated for the southern hemisphere with a NASA LRO surface.

All times on this page use the IANA time zone America/Sao_Paulo, including daylight-saving changes. The weather forecast is for coordinates -22.91°, -43.17°. It can differ across a large metropolitan area.

Server-rendered local dataCanonical city pageSouthern hemisphere

Want a different place? Use the location selector in the header, or view the live default page.

Next lunar event

Calculated phase · local to Rio de Janeiro

All events

Tue

Nov

First Quarter Moon

08:48 local · Tue 17 Nov

Below horizonMoon at -35° altitude

First Quarter Moon occurs at 08:48 local time in Rio de Janeiro on 17 November. Half of the visible disc is lit, and the terminator cuts across the middle. Long shadows make craters along the dividing line stand out.

Event details Below the horizon at the exact moment — look near moonrise or moonset