16.09
wed
wed
Day
59°F
N 17 mph
Precip.
80%
80%
Night
57°F
NE 11 mph
Precip.
30%
30%
17.09
thu
thu
Day
57°F
E 9 mph
Precip.
54%
54%
Night
55°F
NE 7 mph
Precip.
39%
39%
18.09
fri
fri
Day
57°F
NE 10 mph
Precip.
53%
53%
Night
55°F
NE 14 mph
Precip.
58%
58%
19.09
sat
sat
Day
57°F
NE 16 mph
Precip.
35%
35%
Night
57°F
NE 19 mph
Precip.
55%
55%
20.09
sun
sun
Day
55°F
E 14 mph
Precip.
32%
32%
Night
50°F
N 1 mph
Precip.
22%
22%
21.09
mon
mon
Day
57°F
S 6 mph
Precip.
4%
4%
Night
50°F
S 14 mph
Precip.
86%
86%
22.09
tue
tue
Day
54°F
SW 11 mph
Precip.
22%
22%
Night
52°F
S 8 mph
Precip.
31%
31%
23.09
wed
wed
Day
57°F
SW 8 mph
Precip.
26%
26%
Night
55°F
S 12 mph
Precip.
21%
21%
24.09
thu
thu
Day
50°F
N 2 mph
Precip.
45%
45%
Night
46°F
S 9 mph
Precip.
67%
67%
25.09
fri
fri
Day
50°F
S 11 mph
Precip.
6%
6%
Night
46°F
S 11 mph
Precip.
42%
42%
26.09
sat
sat
Day
46°F
S 10 mph
Precip.
31%
31%
Night
46°F
SW 6 mph
Precip.
27%
27%
27.09
sun
sun
Day
50°F
W 7 mph
Precip.
21%
21%
Night
46°F
W 9 mph
Precip.
17%
17%
28.09
mon
mon
Day
54°F
W 15 mph
Precip.
22%
22%
Night
50°F
W 13 mph
Precip.
25%
25%
29.09
tue
tue
Day
54°F
W 12 mph
Precip.
21%
21%
Night
50°F
W 7 mph
Precip.
46%
46%
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 60.8°F. The highest and lowest sea temperatures during the month were 62.2°F and 58.6°F.
Air temperature in Turku, °F
Precipitation total in Turku, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Turku
Turku on a weather map
Places in Finland:
Name
°F
24 Hours Forecast
Turku
Local time: 21:18
September 17, thursday
0000
57°F
NE
11 mph
11 mph
0300
57°F
NE
11 mph
11 mph
0600
54°F
NE
11 mph
11 mph
0900
55°F
NE
11 mph
11 mph
1200
57°F
E
9 mph
9 mph
1500
59°F
E
10 mph
10 mph
1800
57°F
E
8 mph
8 mph
2100
52°F
NE
4 mph
4 mph
