Measurements:
°C
°F
CURRENT WEATHER
18:16
Niteroi
70°F
W 2 mph
Feels like: 70°F
Precip: 100%
World Resorts Brazil Niteroi Weather

7 Day Weather Forecast

05.22
fri
DAY
72°F
N 2 mph
precip
100%
NIGHT
70°F
SW 4 mph
precip
72%
05.23
sat
DAY
80°F
W 2 mph
precip
0%
NIGHT
72°F
SE 4 mph
precip
0%
05.24
sun
DAY
78°F
N 4 mph
precip
0%
NIGHT
72°F
E 5 mph
precip
100%
05.25
mon
DAY
80°F
NE 5 mph
precip
61%
NIGHT
74°F
W 2 mph
precip
0%
05.26
tue
DAY
82°F
NW 2 mph
precip
0%
NIGHT
74°F
E 6 mph
precip
100%
05.27
wed
DAY
76°F
NE 12 mph
precip
100%
NIGHT
70°F
E 6 mph
precip
100%
05.28
thu
DAY
76°F
NE 6 mph
precip
84%
NIGHT
70°F
SW 2 mph
precip
100%

Niteroi Sea Water Temperature in May, °F

Select Year: 2026 2025 2024

The average sea surface temperature in May 2026 for Niteroi was 24.2°F. The maximum and minimum values were 23.4°F and 25.0°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