S
M
T
W
T
F
S
29
40°
28°
30
43°
29°
31
52°
30°
1
45°
27°
2
48°
28°
3
45°
37°
4
42°
36°
5
45°
36°
6
41°
35°
7
47°
35°
8
45°
29°
9
46°
26°
10
50°
27°
11
52°
29°
12
53°
28°
13
54°
27°
14
57°
27°
15
57°
29°
16
54°
35°
17
58°
44°
18
54°
33°
19
51°
29°
20
55°
32°
21
59°
26°
22
53°
37°
23
51°
33°
24
54°
33°
25
48°
34°
26
46°
32°
27
47°
33°
28
44°
32°
29
50°
35°
30
59°
33°
1
70°
41°
2
71°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Helsinki
Helsinki's April 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for April 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 April weather will actually feel in Helsinki. See also: May | June | July.