05.10
mon
mon
Day
72°F
NE 13 mph
Precip.
20%
20%
Night
72°F
NE 4 mph
Precip.
31%
31%
06.10
tue
tue
Day
73°F
N 7 mph
Precip.
30%
30%
Night
72°F
SW 5 mph
Precip.
48%
48%
07.10
wed
wed
Day
73°F
W 7 mph
Precip.
31%
31%
Night
70°F
NE 2 mph
Precip.
81%
81%
08.10
thu
thu
Day
73°F
N 9 mph
Precip.
29%
29%
Night
72°F
SW 6 mph
Precip.
14%
14%
09.10
fri
fri
Day
77°F
NW 7 mph
Precip.
12%
12%
Night
73°F
SW 2 mph
Precip.
34%
34%
10.10
sat
sat
Day
73°F
N 8 mph
Precip.
27%
27%
Night
73°F
SE 3 mph
Precip.
29%
29%
11.10
sun
sun
Day
77°F
N 7 mph
Precip.
18%
18%
Night
72°F
S 16 mph
Precip.
85%
85%
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 73.0°F. The highest and lowest sea temperatures during the month were 75.7°F and 70.2°F.
Air temperature in Niteroi, °F
Precipitation total in Niteroi, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Niteroi
Niteroi on a weather map
Places in Brazil:
Name
°F
24 Hours Forecast
Niteroi
Local time: 09:20
October 05, monday
1200
72°F
NE
13 mph
13 mph
1500
72°F
NE
12 mph
12 mph
1800
72°F
NE
13 mph
13 mph
2100
72°F
E
4 mph
4 mph
October 06, tuesday
0000
72°F
NE
4 mph
4 mph
0300
70°F
S
3 mph
3 mph
0600
70°F
SW
4 mph
4 mph
0900
72°F
W
4 mph
4 mph
