05.08
wed
wed
Day
86°F
NW 1 mph
Precip.
1%
1%
Night
73°F
SW 5 mph
Precip.
3%
3%
06.08
thu
thu
Day
88°F
SE 4 mph
Precip.
1%
1%
Night
75°F
S 6 mph
Precip.
3%
3%
07.08
fri
fri
Day
91°F
SE 12 mph
Precip.
1%
1%
Night
72°F
NW 7 mph
Precip.
20%
20%
08.08
sat
sat
Day
81°F
NW 8 mph
Precip.
3%
3%
Night
73°F
W 5 mph
Precip.
10%
10%
09.08
sun
sun
Day
82°F
N 6 mph
Precip.
3%
3%
Night
72°F
N 7 mph
Precip.
45%
45%
10.08
mon
mon
Day
79°F
N 6 mph
Precip.
11%
11%
Night
72°F
NW 5 mph
Precip.
41%
41%
11.08
tue
tue
Day
68°F
N 9 mph
Precip.
66%
66%
Night
64°F
N 6 mph
Precip.
48%
48%
12.08
wed
wed
Day
64°F
NW 6 mph
Precip.
54%
54%
Night
63°F
SW 4 mph
Precip.
26%
26%
13.08
thu
thu
Day
73°F
NW 5 mph
Precip.
6%
6%
Night
66°F
SE 5 mph
Precip.
26%
26%
14.08
fri
fri
Day
75°F
NE 13 mph
Precip.
16%
16%
Night
66°F
NW 10 mph
Precip.
63%
63%
15.08
sat
sat
Day
64°F
W 11 mph
Precip.
24%
24%
Night
63°F
W 8 mph
Precip.
20%
20%
16.08
sun
sun
Day
68°F
W 10 mph
Precip.
9%
9%
Night
63°F
SW 6 mph
Precip.
8%
8%
17.08
mon
mon
Day
77°F
W 2 mph
Precip.
2%
2%
Night
68°F
E 4 mph
Precip.
11%
11%
18.08
tue
tue
Day
75°F
N 7 mph
Precip.
4%
4%
Night
70°F
N 2 mph
Precip.
14%
14%
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 71.1°F. The highest and lowest sea temperatures during the month were 73.9°F and 69.3°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: 23:20
August 06, thursday
0000
73°F
SW
5 mph
5 mph
0300
72°F
SW
5 mph
5 mph
0600
70°F
S
4 mph
4 mph
0900
79°F
S
6 mph
6 mph
1200
88°F
SE
4 mph
4 mph
1500
88°F
W
3 mph
3 mph
1800
81°F
W
7 mph
7 mph
2100
77°F
SE
2 mph
2 mph
