Annual mean 25°C · wettest around February · prevailing wind N
Warmest
33.0 °C
Coldest
27.8 °C
Wettest
68%
Windiest
2.6 m/s
Prevailing
N
2.2 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
never good
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 Branco over the whole year is 25°C. September is the hottest month, with highs of about 33°C; July is the coldest, with lows of about 20°C. The rainy (wet) season in Rio Branco runs from October to April, peaking in February with a 50% chance of rain on a given day. The dry season is May to September; July is the driest month, at 4%. Winds in Rio Branco are highest in September, averaging 1.5 m/s (5 km/h), and lightest in June, at 1.0 m/s (4 km/h). The prevailing wind is from the N. The clearest skies in Rio Branco come in July, when the sky is typically 25% covered; February is the cloudiest month, at 71%.
Month by month Rio Branco 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
23°C
33°C
45%
68%
1.4 m/s
5
45
0
February
28°C
24°C
33°C
50%
71%
1.2 m/s
3
43
0
March
29°C
23°C
33°C
42%
71%
1.2 m/s
4
38
1
April
29°C
23°C
34°C
44%
61%
1.1 m/s
5
36
1
May
29°C
22°C
33°C
14%
53%
1.1 m/s
13
34
7
June
29°C
20°C
32°C
15%
47%
1.0 m/s
18
34
8
July
31°C
20°C
32°C
4%
25%
1.1 m/s
12
45
6
August
32°C
21°C
33°C
6%
28%
1.3 m/s
12
34
5
September
33°C
23°C
35°C
20%
35%
1.5 m/s
6
25
1
October
32°C
24°C
34°C
29%
54%
1.5 m/s
6
28
1
November
30°C
24°C
33°C
36%
60%
1.4 m/s
8
35
2
December
29°C
24°C
33°C
43%
68%
1.4 m/s
5
42
1
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 Branco weather by season
Year round, Rio Branco has days of about 28°C at their warmest in February, its coolest month, and 33°C in September, its warmest; the coolest hours of the day run from 20°C to 24°C through the year, and the average temperature over the year is 25°C around the clock. Rain is most likely around February and least likely around July. 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 Branco weather in winterJune to August
High 30°CLow 20°CRain 8%
Winter in Rio Branco has typical daily highs of about 30°C and lows of about 20°C, with a 8% chance of rain on a given day.
Rio Branco weather in springSeptember to November
High 31°CLow 23°CRain 28%
Spring in Rio Branco has typical daily highs of about 31°C and lows of about 23°C, with a 28% chance of rain on a given day.
Rio Branco weather in summerDecember to February
High 29°CLow 23°CRain 46%
Summer in Rio Branco has typical daily highs of about 29°C and lows of about 23°C, with a 46% chance of rain on a given day.
Rio Branco weather in autumnMarch to May
High 29°CLow 23°CRain 33%
Autumn in Rio Branco has typical daily highs of about 29°C and lows of about 23°C, with a 33% chance of rain on a given day.
When is the rainy season in Rio Branco?
The rainy (wet) season in Rio Branco runs from October to April, peaking in February with a 50% chance of rain on a given day. The dry season is May to September; July is the driest month, at 4%.
What time of year is Rio Branco windiest?
Winds in Rio Branco are highest in September, averaging 1.5 m/s (5 km/h), and lightest in June, at 1.0 m/s (4 km/h). The prevailing wind is from the N.
What is the average temperature in Rio Branco year round?
The average temperature in Rio Branco over the whole year is 25°C. September is the hottest month, with highs of about 33°C; July is the coldest, with lows of about 20°C.