Annual mean 21°C · wettest around October · prevailing wind E
Warmest
28.3 °C
Coldest
18.7 °C
Wettest
91%
Windiest
3.9 m/s
Prevailing
E
3.1 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 Itajaí over the whole year is 21°C. January is the hottest month, with highs of about 28°C; July is the coldest, with lows of about 14°C. The rainy (wet) season in Itajaí runs from October, peaking in October with a 39% chance of rain on a given day. The dry season is May to September; July is the driest month, at 13%. Winds in Itajaí are highest in November, averaging 2.8 m/s (10 km/h), and lightest in June, at 2.1 m/s (8 km/h). The prevailing wind is from the E. The clearest skies in Itajaí come in July, when the sky is typically 59% covered; October is the cloudiest month, at 78%.
Month by month Itajaí 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
28°C
22°C
30°C
35%
65%
2.6 m/s
25
61
5
February
28°C
22°C
30°C
29%
60%
2.5 m/s
24
65
4
March
27°C
21°C
29°C
38%
63%
2.4 m/s
29
69
6
April
25°C
19°C
26°C
27%
63%
2.2 m/s
62
57
23
May
22°C
17°C
23°C
25%
61%
2.2 m/s
77
35
46
June
20°C
15°C
20°C
20%
60%
2.1 m/s
76
16
65
July
19°C
14°C
19°C
13%
59%
2.2 m/s
76
9
73
August
20°C
15°C
20°C
20%
70%
2.1 m/s
79
13
70
September
22°C
17°C
22°C
21%
72%
2.5 m/s
81
25
56
October
23°C
18°C
23°C
39%
78%
2.6 m/s
78
29
49
November
24°C
19°C
25°C
24%
68%
2.8 m/s
72
44
35
December
26°C
21°C
28°C
30%
68%
2.8 m/s
49
61
15
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 Itajaí weather by season
Year round, Itajaí has days of about 19°C at their warmest in July, its coolest month, and 28°C in January, its warmest; the coolest hours of the day run from 14°C to 22°C through the year, and the average temperature over the year is 21°C around the clock. Rain is most likely around October and least likely around July. 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.
Itajaí weather in winterJune to August
High 20°CLow 14°CRain 18%
Winter in Itajaí has typical daily highs of about 20°C and lows of about 14°C, with a 18% chance of rain on a given day.
Itajaí weather in springSeptember to November
High 23°CLow 18°CRain 28%
Spring in Itajaí has typical daily highs of about 23°C and lows of about 18°C, with a 28% chance of rain on a given day.
Itajaí weather in summerDecember to February
High 27°CLow 22°CRain 31%
Summer in Itajaí has typical daily highs of about 27°C and lows of about 22°C, with a 31% chance of rain on a given day.
Itajaí weather in autumnMarch to May
High 25°CLow 19°CRain 30%
Autumn in Itajaí has typical daily highs of about 25°C and lows of about 19°C, with a 30% chance of rain on a given day.
When is the rainy season in Itajaí?
The rainy (wet) season in Itajaí runs from October, peaking in October with a 39% chance of rain on a given day. The dry season is May to September; July is the driest month, at 13%.
What time of year is Itajaí windiest?
Winds in Itajaí are highest in November, averaging 2.8 m/s (10 km/h), and lightest in June, at 2.1 m/s (8 km/h). The prevailing wind is from the E.
What is the average temperature in Itajaí year round?
The average temperature in Itajaí over the whole year is 21°C. January is the hottest month, with highs of about 28°C; July is the coldest, with lows of about 14°C.