Measurements:
°C
°F
CURRENT WEATHER
21:30
Niteroi
68°F
NE 4 mph
Feels like: 68°F
Precip: 17%
World Resorts Brazil Niteroi Weather

7 Day Weather Forecast

07.08
wed
DAY
72°F
NE 7 mph
precip
18%
NIGHT
68°F
E 2 mph
precip
16%
07.09
thu
DAY
72°F
N 4 mph
precip
4%
NIGHT
64°F
SW 5 mph
precip
10%
07.10
fri
DAY
80°F
W 1 mph
precip
2%
NIGHT
68°F
E 3 mph
precip
9%
07.11
sat
DAY
76°F
NE 5 mph
precip
5%
NIGHT
68°F
SW 3 mph
precip
11%
07.12
sun
DAY
78°F
SW 7 mph
precip
7%
NIGHT
72°F
NE 6 mph
precip
12%
07.13
mon
DAY
70°F
S 9 mph
precip
59%
NIGHT
68°F
E 9 mph
precip
42%
07.14
tue
DAY
72°F
N 5 mph
precip
36%
NIGHT
68°F
W 4 mph
precip
12%

Niteroi Sea Water Temperature in July, °F

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Niteroi was 21.6°F. The maximum and minimum values were 20.9°F and 22.4°F respectively.

Niteroi on the Weather Map

Best Time to Visit Niteroi
The most sunny months:
July 20 days
August 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 79.6 °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