Measurements:
°C
°F
Niteroi
76°F
SW 2 mph
Feels like: 80°F
Precip: 6%
World Resorts Brazil Niteroi Weather

Niteroi Sea Water Temperature

Current Sea Water Temperature:
+78.4°F
Maximum Sea Water Temperature in November: 85.6°F
Minimum Sea Water Temperature in November: 71.4°F
Average water temperature in November: 77.8°F

Sea Water Temperature for the Last 10 Days:

November 11 78.4°F November 06 78.8°F
November 10 78.6°F November 05 77.6°F
November 09 79.0°F November 04 79.4°F
November 08 79.0°F November 03 75.6°F
November 07 79.8°F November 02 78.4°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 19 days
August 18 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 80.0 °F
The most rainy months:
February 5 days
December 5 days
January 5 days
The most windy months:
September 7 mph
October 7 mph
August 6 mph

Niteroi on the Weather Map

24 Hours Weather Forecast
Niteroi
Local time: 08:37
11 nov, wednesday
0900 76°F
SW
2 mph
1200 80°F
W
3 mph
1500 82°F
W
9 mph
1800 76°F
W
12 mph
2100 74°F
W
9 mph
12 nov, thursday
0000 72°F
SW
6 mph
0300 70°F
W
4 mph
0600 70°F
SW
3 mph