Measurements:
°C
°F
CURRENT WEATHER
05:09
Niteroi
70°F
N 13 mph
Feels like: 70°F
Precip: 55%
World Resorts Brazil Niteroi Weather

7 Day Weather Forecast

10.19
mon
DAY
72°F
N 8 mph
precip
32%
NIGHT
68°F
NW 4 mph
precip
57%
10.20
tue
DAY
70°F
NW 5 mph
precip
29%
NIGHT
70°F
W 8 mph
precip
28%
10.21
wed
DAY
74°F
W 8 mph
precip
15%
NIGHT
72°F
W 11 mph
precip
60%
10.22
thu
DAY
76°F
W 11 mph
precip
37%
NIGHT
74°F
W 13 mph
precip
29%
10.23
fri
DAY
76°F
W 12 mph
precip
29%
NIGHT
76°F
S 6 mph
precip
29%
10.24
sat
DAY
82°F
N 6 mph
precip
7%
NIGHT
76°F
S 8 mph
precip
30%
10.25
sun
DAY
78°F
NW 3 mph
precip
27%
NIGHT
76°F
E 4 mph
precip
29%

Niteroi Sea Water Temperature in October, °F

Select Year: 2026 2025 2024

The average sea surface temperature in October 2026 for Niteroi was 24.4°F. The maximum and minimum values were 23.2°F and 25.3°F respectively.

Niteroi on the Weather Map

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 6 mph
August 6 mph
more details