16.09
wed
wed
Day
52°F
NW 17 mph
Precip.
33%
33%
Night
54°F
N 12 mph
Precip.
38%
38%
17.09
thu
thu
Day
54°F
N 10 mph
Precip.
42%
42%
Night
50°F
E 16 mph
Precip.
38%
38%
18.09
fri
fri
Day
52°F
E 3 mph
Precip.
27%
27%
Night
52°F
NE 13 mph
Precip.
29%
29%
19.09
sat
sat
Day
52°F
N 7 mph
Precip.
33%
33%
Night
46°F
N 8 mph
Precip.
17%
17%
20.09
sun
sun
Day
54°F
N 17 mph
Precip.
24%
24%
Night
48°F
SE 6 mph
Precip.
22%
22%
21.09
mon
mon
Day
52°F
SW 4 mph
Precip.
16%
16%
Night
46°F
SW 15 mph
Precip.
23%
23%
22.09
tue
tue
Day
48°F
SW 14 mph
Precip.
37%
37%
Night
48°F
SW 7 mph
Precip.
30%
30%
23.09
wed
wed
Day
54°F
W 3 mph
Precip.
24%
24%
Night
52°F
S 7 mph
Precip.
43%
43%
24.09
thu
thu
Day
50°F
S 12 mph
Precip.
69%
69%
Night
46°F
S 20 mph
Precip.
76%
76%
25.09
fri
fri
Day
43°F
S 19 mph
Precip.
69%
69%
Night
45°F
S 20 mph
Precip.
28%
28%
26.09
sat
sat
Day
48°F
SW 13 mph
Precip.
18%
18%
Night
41°F
SW 4 mph
Precip.
11%
11%
27.09
sun
sun
Day
46°F
N 4 mph
Precip.
14%
14%
Night
41°F
N 7 mph
Precip.
12%
12%
28.09
mon
mon
Day
46°F
N 7 mph
Precip.
15%
15%
Night
41°F
NW 6 mph
Precip.
30%
30%
29.09
tue
tue
Day
50°F
NW 6 mph
Precip.
20%
20%
Night
43°F
NW 7 mph
Precip.
14%
14%
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 57.2°F. The highest and lowest sea temperatures during the month were 60.8°F and 54.3°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: 21:17
September 17, thursday
0000
54°F
N
12 mph
12 mph
0300
54°F
N
12 mph
12 mph
0600
52°F
N
11 mph
11 mph
0900
52°F
N
10 mph
10 mph
1200
54°F
N
10 mph
10 mph
1500
52°F
N
12 mph
12 mph
1800
54°F
E
11 mph
11 mph
2100
52°F
E
13 mph
13 mph
