Measurements:
°C
°F
CURRENT WEATHER
02:53
Niteroi
76°F
NE 2 mph
Feels like: 80°F
Precip: 100%
World Resorts Brazil Niteroi Weather

7 Day Weather Forecast

05.01
fri
DAY
84°F
N 5 mph
precip
100%
NIGHT
76°F
SW 4 mph
precip
0%
05.02
sat
DAY
92°F
E 2 mph
precip
0%
NIGHT
82°F
NE 2 mph
precip
83%
05.03
sun
DAY
78°F
NE 10 mph
precip
100%
NIGHT
72°F
NW 5 mph
precip
100%
05.04
mon
DAY
80°F
W 8 mph
precip
0%
NIGHT
72°F
SW 6 mph
precip
0%
05.05
tue
DAY
86°F
NW 2 mph
precip
0%
NIGHT
76°F
S 4 mph
precip
0%
05.06
wed
DAY
86°F
NW 3 mph
precip
0%
NIGHT
76°F
S 3 mph
precip
0%
05.07
thu
DAY
88°F
NW 4 mph
precip
0%
NIGHT
76°F
S 4 mph
precip
0%

Niteroi Sea Water Temperature in May, °F

Select Year: 2025 2024 2023

The average sea surface temperature in May 2025 for Niteroi was 23.7°F. The maximum and minimum values were 22.9°F and 24.8°F respectively.

Niteroi on the Weather Map

Best Time to Visit Niteroi
The most sunny months:
July 20 days
August 19 days
May 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 80.2 °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