15.09
tue
tue
Day

57°F
N 12 mph
Precip.
21%
21%
Night

54°F
N 15 mph
Precip.
63%
63%
16.09
wed
wed
Day

57°F
N 14 mph
Precip.
79%
79%
Night

54°F
N 12 mph
Precip.
28%
28%
17.09
thu
thu
Day

55°F
E 11 mph
Precip.
39%
39%
Night

52°F
E 13 mph
Precip.
36%
36%
18.09
fri
fri
Day

55°F
E 2 mph
Precip.
16%
16%
Night

50°F
NW 7 mph
Precip.
24%
24%
19.09
sat
sat
Day

57°F
NE 11 mph
Precip.
31%
31%
Night

50°F
N 7 mph
Precip.
15%
15%
20.09
sun
sun
Day

55°F
NE 6 mph
Precip.
44%
44%
Night

54°F
SE 14 mph
Precip.
67%
67%
21.09
mon
mon
Day

52°F
S 12 mph
Precip.
29%
29%
Night

50°F
S 6 mph
Precip.
20%
20%
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 57.7°F. The highest and lowest sea temperatures during the month were 61.9°F and 51.3°F.
Air temperature in Vaasa, °F
Precipitation total in Vaasa, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Vaasa
Vaasa on a weather map
Places in Finland:
Name
°F
24 Hours Forecast
Vaasa
Local time: 04:34
September 15, tuesday
0600

48°F
N
9 mph
9 mph
0900

52°F
N
11 mph
11 mph
1200

57°F
N
12 mph
12 mph
1500

54°F
N
12 mph
12 mph
1800

52°F
N
14 mph
14 mph
2100

52°F
NW
16 mph
16 mph
September 16, wednesday
0000

54°F
N
15 mph
15 mph
0300

55°F
N
15 mph
15 mph



























