S
M
T
W
T
F
S
26
69°
53°
27
71°
54°
28
71°
55°
29
74°
53°
30
75°
53°
31
72°
54°
1
74°
55°
2
74°
56°
3
73°
55°
4
72°
53°
5
71°
54°
6
72°
55°
7
72°
54°
8
71°
55°
9
73°
57°
10
73°
56°
11
72°
53°
12
72°
54°
13
71°
55°
14
72°
55°
15
72°
54°
16
71°
55°
17
72°
56°
18
70°
55°
19
72°
55°
20
71°
56°
21
72°
55°
22
69°
52°
23
67°
53°
24
70°
48°
25
68°
48°
26
Hist. Avg.
65°
51°
27
Hist. Avg.
65°
51°
28
Hist. Avg.
65°
50°
29
Hist. Avg.
64°
50°
30
Hist. Avg.
64°
50°
31
Hist. Avg.
64°
50°
1
Hist. Avg.
63°
49°
2
Hist. Avg.
63°
49°
3
Hist. Avg.
63°
49°
4
Hist. Avg.
62°
49°
5
Hist. Avg.
62°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Helsinki
Helsinki's August 2026 forecast shows daily high temperatures ranging from 67° to 75°, with overnight lows between 48° and 57°. The average high for August is 72° 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 August weather will actually feel in Helsinki. See also: September | October | November.
