Weather

Rio de Janeiro Weather Today

Live rain radar, current conditions, an hour-by-hour outlook and a seven-day forecast for Rio de Janeiro, with original writing about the city's climate from The Daily Rio de Janeiro.

Today's briefing

Good morning, Rio! We're starting the day at a pleasant 21 degrees with a feels-like temperature of 24 degrees, and conditions are looking quite nice as we head toward a high of 27 degrees this afternoon with virtually no chance of rain. It's a dry day with a moderate UV index of 5, so while you'll want some sun protection, a light t-shirt or casual summer wear should do the trick perfectly for moving around the city. As we look ahead to the weekend, Saturday's shaping up to be quite wet with a 96 percent chance of rain and a cooler high of 22 degrees, whilst Sunday should ease up a bit with a 45 percent rain chance and a high of 21 degrees.

Mainly clear · 21° in Rio de Janeiro

21°

Mainly clear · feels like 23°

Today: 27° / 20°
Humidity: 91%
Wind: 13 km/h SW
UV index: 0 · Low
Sunrise: 6:34 am
Sunset: 5:19 pm
Updated: 8:01 pm

Next 24 hours

Now
21°
0%
9pm
21°
0%
10pm
21°
0%
11pm
21°
0%
12am
21°
0%
1am
21°
0%
2am
21°
0%
3am
20°
0%
4am
20°
0%
5am
20°
0%
6am
20°
0%
7am
20°
0%
8am
21°
0%
9am
22°
0%
10am
22°
0%
11am
23°
0%
12pm
23°
2%
1pm
22°
27%
2pm
22°
61%
3pm
21°
86%
4pm
21°
95%
5pm
20°
95%
6pm
20°
92%
7pm
20°
86%

Live rain radar

Drag to pan, scroll the page over it

Animated rain radar via RainViewer (Bureau of Meteorology sources). Full BOM radar loop.

Seven-day forecast

Thu
Drizzle
27° 20°
Rain 0%
Fri
Drizzle
23° 20°
Rain 95%
Sat
Drizzle
21° 19°
Rain 41%
Sun
Drizzle
22° 19°
Rain 0%
Mon
Drizzle
24° 17°
Rain 43%
Tue
Drizzle
21° 18°
Rain 76%
Wed
Partly cloudy
20° 17°
Rain 0%

Air quality

163

Unhealthy

US AQI

PM2.5: 23
PM10: 28
Ozone: 89

Air quality by Open-Meteo (CAMS), in µg/m³.

Sun and moon

Sunrise: 6:34 am
Sunset: 5:19 pm
Daylight: 10h 45m

Waning gibbous

82% lit

From the weather desk

Rio de Janeiro weather, explained

How to read the Rio de Janeiro forecast

A good forecast is really three views at once. The current panel tells you what it feels like outside right now, which is what matters before you head out the door. The hourly strip is for planning the next part of your day: when the rain band arrives, when the wind picks up, when it is warm enough to walk. The seven-day outlook is for the week ahead, and it is most reliable in the first three or four days. Read it from the top down and you will almost always have what you need for Rio de Janeiro.

What the UV index actually means

The UV index rates the strength of the sun's ultraviolet radiation on a simple scale. Below 3 is low and you can be outside safely without protection. From 3 to 7 is moderate to high, the point at which sunburn becomes likely within an hour, so a hat and sunscreen earn their keep. Above 8 is very high to extreme, and skin can burn in minutes around the middle of the day. The index peaks at solar noon, not at the hottest part of the afternoon, so the safest habit is to check the number rather than judge by the temperature.

Why the overnight low matters as much as the high

Daytime maximums get the headlines, but the overnight minimum shapes how the day actually feels. A cold night means a slow, crisp start and, on clear evenings, the chance of fog or frost before dawn. A mild night means the warmth carries over and the morning is comfortable from the outset. Clear skies let heat escape and push the low down; cloud cover traps it and keeps the night warmer. That is why two days with the same maximum can feel completely different depending on the night that came before.

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Weather data by Open-Meteo. The Daily Rio de Janeiro is independent and not affiliated with any government weather agency.

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