Annual mean 23°C · wettest around January · prevailing wind E
Warmest
28.9 °C
Coldest
22.4 °C
Wettest
86%
Windiest
3.1 m/s
Prevailing
E
2.6 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Niterói over the whole year is 23°C. January is the hottest month, with highs of about 29°C; July is the coldest, with lows of about 17°C. The rainy (wet) season in Niterói runs from January to February, peaking in January with a 63% chance of rain on a given day. The dry season is March to October; May is the driest month, at 35%. Winds in Niterói are highest in September, averaging 2.5 m/s (9 km/h), and lightest in May, at 1.9 m/s (7 km/h). The prevailing wind is from the E. The clearest skies in Niterói come in July, when the sky is typically 49% covered; October is the cloudiest month, at 72%.
Month by month Niterói climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
29°C
24°C
32°C
63%
63%
2.0 m/s
17
47
4
February
28°C
23°C
31°C
54%
60%
2.3 m/s
20
51
7
March
28°C
23°C
31°C
49%
56%
2.0 m/s
22
54
7
April
26°C
21°C
28°C
36%
55%
2.0 m/s
38
61
14
May
24°C
19°C
26°C
35%
53%
1.9 m/s
59
54
26
June
24°C
19°C
24°C
35%
53%
1.9 m/s
68
47
35
July
23°C
17°C
23°C
42%
49%
2.1 m/s
73
37
45
August
23°C
17°C
23°C
44%
56%
2.3 m/s
73
35
46
September
25°C
19°C
25°C
48%
59%
2.5 m/s
63
46
32
October
25°C
21°C
26°C
42%
72%
2.5 m/s
56
49
25
November
25°C
21°C
26°C
50%
70%
2.5 m/s
55
50
25
December
27°C
23°C
29°C
47%
64%
2.2 m/s
34
55
12
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Niterói weather by season
Year round, Niterói has days of about 23°C at their warmest in August, its coolest month, and 29°C in January, its warmest; the coolest hours of the day run from 17°C to 24°C through the year, and the average temperature over the year is 23°C around the clock. Rain is most likely around January and least likely around May. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Niterói weather in winterJune to August
High 23°CLow 18°CRain 40%
Winter in Niterói has typical daily highs of about 23°C and lows of about 18°C, with a 40% chance of rain on a given day.
Niterói weather in springSeptember to November
High 25°CLow 20°CRain 46%
Spring in Niterói has typical daily highs of about 25°C and lows of about 20°C, with a 46% chance of rain on a given day.
Niterói weather in summerDecember to February
High 28°CLow 23°CRain 55%
Summer in Niterói has typical daily highs of about 28°C and lows of about 23°C, with a 55% chance of rain on a given day.
Niterói weather in autumnMarch to May
High 26°CLow 21°CRain 40%
Autumn in Niterói has typical daily highs of about 26°C and lows of about 21°C, with a 40% chance of rain on a given day.
When is the rainy season in Niterói?
The rainy (wet) season in Niterói runs from January to February, peaking in January with a 63% chance of rain on a given day. The dry season is March to October; May is the driest month, at 35%.
What time of year is Niterói windiest?
Winds in Niterói are highest in September, averaging 2.5 m/s (9 km/h), and lightest in May, at 1.9 m/s (7 km/h). The prevailing wind is from the E.
What is the average temperature in Niterói year round?
The average temperature in Niterói over the whole year is 23°C. January is the hottest month, with highs of about 29°C; July is the coldest, with lows of about 17°C.