15.09
tue
tue
Day

52°F
N 7 mph
Precip.
18%
18%
Night

48°F
NW 10 mph
Precip.
24%
24%
16.09
wed
wed
Day

50°F
NW 17 mph
Precip.
80%
80%
Night

55°F
N 11 mph
Precip.
39%
39%
17.09
thu
thu
Day

52°F
N 7 mph
Precip.
55%
55%
Night

48°F
N 7 mph
Precip.
38%
38%
18.09
fri
fri
Day

48°F
S 6 mph
Precip.
31%
31%
Night

46°F
NW 2 mph
Precip.
32%
32%
19.09
sat
sat
Day

50°F
W 3 mph
Precip.
27%
27%
Night

48°F
E 3 mph
Precip.
14%
14%
20.09
sun
sun
Day

52°F
N 6 mph
Precip.
21%
21%
Night

46°F
SW 6 mph
Precip.
31%
31%
21.09
mon
mon
Day

48°F
S 11 mph
Precip.
6%
6%
Night

46°F
S 12 mph
Precip.
28%
28%
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 56.6°F. The highest and lowest sea temperatures during the month were 61.2°F and 50.0°F.
Air temperature in Oulu, °F
Precipitation total in Oulu, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Oulu
Oulu on a weather map
Places in Finland:
Name
°F
24 Hours Forecast
Oulu
Local time: 04:47
September 15, tuesday
0600

43°F
N
6 mph
6 mph
0900

46°F
N
7 mph
7 mph
1200

52°F
N
7 mph
7 mph
1500

55°F
N
8 mph
8 mph
1800

54°F
NW
7 mph
7 mph
2100

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

48°F
NW
10 mph
10 mph
0300

48°F
NW
14 mph
14 mph



























