S
M
T
W
T
F
S
30
68°
51°
31
67°
46°
1
64°
45°
2
61°
46°
3
63°
50°
4
63°
47°
5
59°
45°
6
61°
45°
7
61°
47°
8
60°
51°
9
61°
50°
10
60°
47°
11
61°
51°
12
62°
50°
13
60°
52°
14
63°
51°
15
62°
50°
16
61°
49°
17
59°
49°
18
Hist. Avg.
56°
44°
19
Hist. Avg.
56°
44°
20
Hist. Avg.
55°
44°
21
Hist. Avg.
55°
43°
22
Hist. Avg.
55°
43°
23
Hist. Avg.
54°
43°
24
Hist. Avg.
54°
43°
25
Hist. Avg.
54°
43°
26
Hist. Avg.
53°
42°
27
Hist. Avg.
53°
42°
28
Hist. Avg.
53°
42°
29
Hist. Avg.
53°
42°
30
Hist. Avg.
52°
42°
1
Hist. Avg.
52°
41°
2
Hist. Avg.
52°
41°
3
Hist. Avg.
51°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Turku
Turku's September 2026 forecast shows daily high temperatures ranging from 59° to 68°, with overnight lows between 45° and 52°. The average high for September is 62° with an average low of 49°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Turku. See also: October | November | December.
