Annual mean 23°C · wettest around January · prevailing wind SE
Warmest
29.6 °C
Coldest
22.9 °C
Wettest
84%
Windiest
3.4 m/s
Prevailing
SE
2.9 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Rio de Janeiro over the whole year is 23°C. January is the hottest month, with highs of about 29°C; July is the coldest, with lows of about 17°C. The rainy (wet) season in Rio de Janeiro runs from January to March, peaking in January with a 62% chance of rain on a given day. The dry season is April to October; May is the driest month, at 34%. Winds in Rio de Janeiro are highest in October, averaging 2.7 m/s (10 km/h), and lightest in April, at 2.1 m/s (8 km/h). The prevailing wind is from the SE. The clearest skies in Rio de Janeiro come in July, when the sky is typically 50% covered; October is the cloudiest month, at 72%.
Month by month Rio de Janeiro climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
29°C
24°C
32°C
62%
62%
2.2 m/s
14
44
4
February
29°C
23°C
32°C
54%
60%
2.4 m/s
17
50
5
March
28°C
23°C
31°C
49%
56%
2.2 m/s
19
53
6
April
27°C
21°C
29°C
36%
55%
2.1 m/s
35
63
12
May
25°C
19°C
26°C
34%
53%
2.1 m/s
56
57
23
June
24°C
19°C
25°C
34%
53%
2.1 m/s
65
51
31
July
23°C
17°C
23°C
39%
50%
2.3 m/s
71
40
41
August
23°C
18°C
23°C
42%
56%
2.5 m/s
71
37
43
September
25°C
20°C
26°C
46%
59%
2.6 m/s
60
48
30
October
26°C
21°C
27°C
43%
72%
2.7 m/s
54
50
23
November
26°C
22°C
27°C
49%
70%
2.7 m/s
52
51
22
December
28°C
23°C
30°C
46%
64%
2.3 m/s
31
54
10
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Rio de Janeiro weather by season
Year round, Rio de Janeiro has days of about 23°C at their warmest in August, its coolest month, and 29°C in January, its warmest; the coolest hours of the day run from 17°C to 24°C through the year, and the average temperature over the year is 23°C around the clock. Rain is most likely around January and least likely around May. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Rio de Janeiro weather in winterJune to August
High 24°CLow 18°CRain 38%
Winter in Rio de Janeiro has typical daily highs of about 24°C and lows of about 18°C, with a 38% chance of rain on a given day.
Rio de Janeiro weather in springSeptember to November
High 25°CLow 21°CRain 46%
Spring in Rio de Janeiro has typical daily highs of about 25°C and lows of about 21°C, with a 46% chance of rain on a given day.
Rio de Janeiro weather in summerDecember to February
High 29°CLow 24°CRain 54%
Summer in Rio de Janeiro has typical daily highs of about 29°C and lows of about 24°C, with a 54% chance of rain on a given day.
Rio de Janeiro weather in autumnMarch to May
High 27°CLow 21°CRain 39%
Autumn in Rio de Janeiro has typical daily highs of about 27°C and lows of about 21°C, with a 39% chance of rain on a given day.
When is the rainy season in Rio de Janeiro?
The rainy (wet) season in Rio de Janeiro runs from January to March, peaking in January with a 62% chance of rain on a given day. The dry season is April to October; May is the driest month, at 34%.
What time of year is Rio de Janeiro windiest?
Winds in Rio de Janeiro are highest in October, averaging 2.7 m/s (10 km/h), and lightest in April, at 2.1 m/s (8 km/h). The prevailing wind is from the SE.
What is the average temperature in Rio de Janeiro year round?
The average temperature in Rio de Janeiro over the whole year is 23°C. January is the hottest month, with highs of about 29°C; July is the coldest, with lows of about 17°C.