S
M
T
W
T
F
S
26
66°
61°
27
68°
59°
28
68°
55°
29
75°
54°
30
75°
55°
31
79°
59°
1
73°
59°
2
72°
57°
3
68°
55°
4
70°
46°
5
70°
48°
6
75°
63°
7
72°
55°
8
68°
50°
9
70°
57°
10
72°
57°
11
64°
52°
12
63°
48°
13
66°
46°
14
68°
50°
15
73°
59°
16
70°
59°
17
72°
55°
18
68°
50°
19
68°
48°
20
64°
43°
21
70°
52°
22
64°
54°
23
59°
57°
24
64°
54°
25
66°
50°
26
70°
50°
27
72°
46°
28
68°
48°
29
66°
59°
30
68°
59°
31
66°
61°
1
68°
57°
2
68°
52°
3
66°
46°
4
64°
43°
5
63°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Vantaa
Vantaa's August 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for August 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 August weather will actually feel in Vantaa. See also: September | October | November.