S
M
T
W
T
F
S
30
65°
51°
31
66°
52°
1
65°
53°
2
65°
52°
3
66°
51°
4
65°
51°
5
59°
46°
6
63°
48°
7
61°
50°
8
Hist. Avg.
59°
46°
9
Hist. Avg.
58°
46°
10
Hist. Avg.
58°
46°
11
Hist. Avg.
58°
46°
12
Hist. Avg.
58°
45°
13
Hist. Avg.
57°
45°
14
Hist. Avg.
57°
45°
15
Hist. Avg.
57°
45°
16
Hist. Avg.
56°
45°
17
Hist. Avg.
56°
44°
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 66°, with overnight lows between 46° and 53°. The average high for September is 64° 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 September weather will actually feel in Turku. See also: October | November | December.
