S
M
T
W
T
F
S
31
71°
48°
1
70°
48°
2
71°
47°
3
68°
43°
4
64°
43°
5
64°
48°
6
66°
49°
7
69°
49°
8
71°
51°
9
71°
50°
10
72°
50°
11
70°
51°
12
75°
52°
13
73°
52°
14
70°
52°
15
70°
51°
16
69°
49°
17
71°
47°
18
67°
48°
19
68°
49°
20
67°
53°
21
66°
51°
22
69°
51°
23
70°
50°
24
71°
52°
25
72°
55°
26
74°
56°
27
75°
52°
28
76°
51°
29
71°
52°
30
72°
51°
1
70°
53°
2
73°
54°
3
73°
54°
4
74°
52°
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 64° to 76°, with overnight lows between 43° and 56°. The average high for June is 70° with an average low of 50°. 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.