Measurements:
°C
°F
Niteroi
68°F
N 3 mph
Feels like: 68°F
Precip: 5%
World Resorts Brazil Niteroi Weather

Niteroi Sea Water Temperature

Current Sea Water Temperature:
+75.4°F
Maximum Sea Water Temperature in June: 79.6°F
Minimum Sea Water Temperature in June: 72.6°F
Average water temperature in June: 75.6°F

Sea Water Temperature for the Last 10 Days:

June 18 75.4°F June 13 75.2°F
June 17 75.4°F June 12 75.2°F
June 16 75.6°F June 11 75.0°F
June 15 75.6°F June 10 75.6°F
June 14 75.0°F June 09 75.2°F

When is the Warmest Sea for Niteroi?

According to our data for the last three years for Niteroi the highest average sea water temperature was in February, January and March.

Average Water Temperature by Month, °F

Sea Water Temperature in February

Select Year: 2026 2025 2024

The average sea surface temperature in February 2026 for Niteroi was 85.9°F. The maximum and minimum values were 82.0°F and 90.0°F respectively.

Sea Water Temperature in January

Select Year: 2026 2025 2024

The average sea surface temperature in January 2026 for Niteroi was 83.9°F. The maximum and minimum values were 80.8°F and 86.0°F respectively.

Sea Water Temperature in March

Select Year: 2026 2025 2024

The average sea surface temperature in March 2026 for Niteroi was 82.3°F. The maximum and minimum values were 78.8°F and 86.4°F respectively.

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 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

Niteroi on the Weather Map

24 Hours Weather Forecast
Niteroi
Local time: 18:43
18 jun, thursday
2100 66°F
SW
4 mph
19 jun, friday
0000 62°F
S
6 mph
0300 62°F
S
4 mph
0600 60°F
SW
5 mph
0900 66°F
S
3 mph
1200 76°F
W
2 mph
1500 76°F
NW
4 mph
1800 70°F
W
7 mph