World Resorts Brazil Niteroi Weather

Niteroi 7 Days Forecast

16.05
sat
Day
79°F
N 6 mph
Precip.
0%
Night
70°F
SW 4 mph
Precip.
0%
17.05
sun
Day
81°F
N 5 mph
Precip.
0%
Night
72°F
E 7 mph
Precip.
100%
18.05
mon
Day
77°F
NE 9 mph
Precip.
100%
Night
73°F
SW 2 mph
Precip.
100%
19.05
tue
Day
70°F
E 9 mph
Precip.
100%
Night
70°F
E 6 mph
Precip.
100%
20.05
wed
Day
72°F
E 2 mph
Precip.
75%
Night
68°F
W 3 mph
Precip.
100%
21.05
thu
Day
68°F
NW 1 mph
Precip.
100%
Night
68°F
NW 5 mph
Precip.
100%
22.05
fri
Day
70°F
W 4 mph
Precip.
82%
Night
68°F
E 3 mph
Precip.
100%

Sea water temperature in May, °F

Show year:
2026
2025
2024

The average sea water temperature in May of 2026 was 75.9°F. The highest and lowest sea temperatures during the month were 77.0°F and 74.3°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

Sunniest months:
July 20 days
August 19 days
May 16 days
Warmest months:
February 84.6 °F
March 84.2 °F
January 83.8 °F
Warmest sea temp:
February 80.6 °F
January 80.1 °F
March 79.7 °F
Coldest months:
July 76.6 °F
June 77.2 °F
August 77.3 °F
Rainiest months:
February 5 days
December 5 days
January 5 days
Windiest months:
October 6.8 mph
September 6.7 mph
August 6.5 mph

Niteroi on a weather map

Current weather
23:00
Niteroi
+70°F
SW 4 mph
Feels like: +70°F
Precip.: 0%
Places in Brazil:
Name
°F
Balneario Pinhal
+64°F
Buzios
+72°F
Guarapari
+72°F
Guaratuba
+64°F
Joao Pessoa
+75°F
Ilha de Itamaraca
+77°F
Parati
+59°F
Pôrto Belo
+66°F
Recife
+77°F
Rio de Janeiro
+70°F
Rio das Ostras
+70°F
Sao Paulo
+64°F
Santos
+68°F
Florianopolis
+64°F
Fortaleza
+75°F
all places
24 Hours Forecast
Niteroi
Local time: 23:00
May 17, sunday
0000
70°F
SW
4 mph
0300
70°F
SW
2 mph
0600
70°F
SW
4 mph
0900
75°F
SW
2 mph
1200
81°F
N
5 mph
1500
79°F
N
7 mph
1800
72°F
E
7 mph
2100
72°F
E
8 mph
Units of measurement: °C / °F