S
M
T
W
T
F
S
28
75°
53°
29
73°
51°
30
60°
54°
31
63°
50°
1
73°
48°
2
79°
48°
3
80°
52°
4
76°
49°
5
80°
47°
6
80°
48°
7
78°
46°
8
83°
46°
9
83°
51°
10
76°
51°
11
60°
53°
12
61°
51°
13
68°
51°
14
72°
48°
15
63°
51°
16
74°
42°
17
73°
50°
18
61°
54°
19
65°
51°
20
68°
49°
21
72°
51°
22
74°
49°
23
77°
51°
24
82°
50°
25
82°
54°
26
61°
50°
27
62°
47°
28
66°
46°
29
75°
43°
30
69°
49°
31
57°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in Buenos Aires
Buenos Aires'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 Buenos Aires. See also: February | March | April.
