S
M
T
W
T
F
S
31
62°
44°
1
64°
40°
2
69°
41°
3
73°
46°
4
75°
51°
5
68°
54°
6
68°
54°
7
69°
54°
8
75°
56°
9
61°
53°
10
60°
50°
11
57°
51°
12
59°
50°
13
61°
53°
14
61°
54°
15
62°
54°
16
63°
53°
17
61°
54°
18
63°
53°
19
62°
54°
20
65°
56°
21
72°
54°
22
72°
54°
23
68°
53°
24
66°
54°
25
66°
54°
26
68°
53°
27
67°
53°
28
69°
55°
29
68°
55°
30
68°
54°
1
70°
55°
2
72°
56°
3
68°
55°
4
68°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Helsinki
Helsinki's June 2026 forecast shows daily high temperatures ranging from 57° to 75°, with overnight lows between 50° and 56°. The average high for June is 66° with an average low of 54°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Helsinki. See also: July | August | September.