S
M
T
W
T
F
S
28
95°
75°
29
95°
68°
30
84°
75°
31
93°
72°
1
88°
75°
2
86°
73°
3
82°
70°
4
77°
68°
5
84°
68°
6
81°
66°
7
86°
66°
8
86°
72°
9
82°
72°
10
82°
73°
11
86°
72°
12
88°
68°
13
82°
72°
14
88°
70°
15
84°
73°
16
86°
75°
17
84°
77°
18
86°
75°
19
82°
70°
20
72°
68°
21
81°
67°
22
73°
68°
23
81°
67°
24
82°
66°
25
82°
70°
26
86°
68°
27
84°
72°
28
86°
72°
29
84°
69°
30
81°
72°
31
84°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in Itajaí
Itajaí's January 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for January is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how January weather will actually feel in Itajaí. See also: February | March | April.
