Measurements:
°C
°F
CURRENT WEATHER
08:39
Niteroi
74°F
S 6 mph
Feels like: 74°F
Precip: 6%
World Resorts Brazil Niteroi Weather

7 Day Weather Forecast

08.18
tue
DAY
80°F
NW 4 mph
precip
4%
NIGHT
74°F
S 5 mph
precip
9%
08.19
wed
DAY
78°F
NW 7 mph
precip
5%
NIGHT
74°F
S 6 mph
precip
8%
08.20
thu
DAY
80°F
NW 6 mph
precip
4%
NIGHT
74°F
SW 6 mph
precip
5%
08.21
fri
DAY
78°F
NE 15 mph
precip
5%
NIGHT
70°F
NE 9 mph
precip
62%
08.22
sat
DAY
70°F
NE 11 mph
precip
40%
NIGHT
70°F
N 9 mph
precip
24%
08.23
sun
DAY
68°F
W 7 mph
precip
25%
NIGHT
68°F
SW 4 mph
precip
41%
08.24
mon
DAY
68°F
N 10 mph
precip
68%
NIGHT
66°F
NW 11 mph
precip
42%

Niteroi Sea Water Temperature in August, °F

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Niteroi was 23.2°F. The maximum and minimum values were 22.5°F and 24.5°F respectively.

Niteroi on the Weather Map

Best Time to Visit Niteroi
The most sunny months:
August 19 days
July 19 days
June 16 days
The most warm months:
February 88.5 °F
March 88.0 °F
January 87.6 °F
Warmest sea temperature:
February 84.0 °F
January 83.4 °F
March 83.0 °F
The most cold months:
July 79.5 °F
June 79.7 °F
August 80.3 °F
The most rainy months:
February 5 days
December 5 days
January 5 days
The most windy months:
October 6 mph
September 6 mph
August 6 mph
more details