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
74°
45°
9
68°
55°
10
66°
55°
11
62°
52°
12
66°
52°
13
N/A
14
57°
52°
15
58°
50°
16
60°
54°
17
65°
54°
18
65°
53°
19
65°
55°
20
67°
58°
21
66°
55°
22
64°
56°
23
66°
55°
24
64°
54°
25
63°
54°
26
64°
56°
27
66°
48°
28
67°
50°
29
66°
54°
30
70°
55°
1
72°
56°
2
71°
56°
3
70°
55°
4
71°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
June Weather in Helsinki
Helsinki's June 2026 forecast shows daily high temperatures ranging from 57° to 72°, with overnight lows between 48° and 58°. 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.