S
M
T
W
T
F
S
28
36°
31°
29
37°
26°
30
30°
20°
31
21°
17°
1
28°
16°
2
29°
25°
3
29°
17°
4
17°
9°
5
23°
6°
6
30°
21°
7
29°
17°
8
18°
8°
9
17°
8°
10
21°
12°
11
23°
21°
12
28°
21°
13
27°
22°
14
28°
22°
15
29°
20°
16
31°
24°
17
32°
23°
18
33°
30°
19
32°
28°
20
28°
25°
21
31°
26°
22
27°
22°
23
23°
17°
24
21°
17°
25
22°
17°
26
23°
19°
27
20°
13°
28
19°
10°
29
15°
7°
30
15°
6°
31
10°
3°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in Helsinki
Helsinki'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 Helsinki. See also: February | March | April.
