Measurements:
°C
°F
CURRENT WEATHER
17:47
Rio de Janeiro
70°F
W 7 mph
Feels like: 70°F
Precip: 44%
World Resorts Brazil Rio de Janeiro Weather

7 Day Weather Forecast

09.08
tue
DAY
68°F
SW 6 mph
precip
23%
NIGHT
68°F
SW 6 mph
precip
18%
09.09
wed
DAY
76°F
W 4 mph
precip
50%
NIGHT
72°F
S 7 mph
precip
31%
09.10
thu
DAY
78°F
S 4 mph
precip
34%
NIGHT
74°F
E 4 mph
precip
43%
09.11
fri
DAY
88°F
S 12 mph
precip
14%
NIGHT
80°F
S 7 mph
precip
7%
09.12
sat
DAY
88°F
S 7 mph
precip
5%
NIGHT
68°F
N 7 mph
precip
40%
09.13
sun
DAY
68°F
W 10 mph
precip
36%
NIGHT
66°F
W 17 mph
precip
79%
09.14
mon
DAY
66°F
W 17 mph
precip
82%
NIGHT
66°F
W 2 mph
precip
30%

Rio de Janeiro Sea Water Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Rio de Janeiro was 21.8°F. The maximum and minimum values were 21.2°F and 22.6°F respectively.

Rio de Janeiro on the Weather Map

Best Time to Visit Rio de Janeiro
The most sunny months:
July 20 days
August 19 days
June 18 days
The most warm months:
February 92.5 °F
January 91.2 °F
March 90.4 °F
Warmest sea temperature:
February 83.2 °F
January 82.6 °F
March 82.2 °F
The most cold months:
August 82.1 °F
June 82.4 °F
July 82.6 °F
The most rainy months:
November 9 days
December 8 days
January 7 days
The most windy months:
October 7 mph
September 7 mph
November 7 mph
more details