15.09
tue
tue
Day
55°F
N 9 mph
Precip.
52%
52%
Night
55°F
N 8 mph
Precip.
35%
35%
16.09
wed
wed
Day
54°F
SE 4 mph
Precip.
14%
14%
Night
48°F
E 2 mph
Precip.
28%
28%
17.09
thu
thu
Day
54°F
N 4 mph
Precip.
23%
23%
Night
48°F
N 2 mph
Precip.
38%
38%
18.09
fri
fri
Day
55°F
N 1 mph
Precip.
20%
20%
Night
45°F
NE 4 mph
Precip.
29%
29%
19.09
sat
sat
Day
52°F
N 6 mph
Precip.
12%
12%
Night
46°F
NE 6 mph
Precip.
8%
8%
20.09
sun
sun
Day
55°F
NE 10 mph
Precip.
3%
3%
Night
46°F
NE 7 mph
Precip.
6%
6%
21.09
mon
mon
Day
54°F
E 4 mph
Precip.
11%
11%
Night
45°F
E 2 mph
Precip.
15%
15%
22.09
tue
tue
Day
46°F
W 2 mph
Precip.
20%
20%
Night
48°F
E 2 mph
Precip.
26%
26%
23.09
wed
wed
Day
59°F
E 11 mph
Precip.
5%
5%
Night
43°F
NE 3 mph
Precip.
7%
7%
24.09
thu
thu
Day
55°F
SE 11 mph
Precip.
1%
1%
Night
43°F
SE 5 mph
Precip.
5%
5%
25.09
fri
fri
Day
52°F
SE 3 mph
Precip.
5%
5%
Night
43°F
S 3 mph
Precip.
4%
4%
26.09
sat
sat
Day
52°F
N 4 mph
Precip.
2%
2%
Night
43°F
NW 1 mph
Precip.
26%
26%
27.09
sun
sun
Day
59°F
NE 2 mph
Precip.
3%
3%
Night
46°F
SE 2 mph
Precip.
25%
25%
28.09
mon
mon
Day
54°F
N 4 mph
Precip.
12%
12%
Night
50°F
NE 4 mph
Precip.
10%
10%
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 62.0°F. The highest and lowest sea temperatures during the month were 63.9°F and 60.1°F.
Air temperature in Oslo, °F
Precipitation total in Oslo, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Oslo
Oslo on a weather map
Places in Norway:
Name
°F
24 Hours Forecast
Oslo
Local time: 17:44
September 15, tuesday
1800
57°F
N
8 mph
8 mph
2100
57°F
N
7 mph
7 mph
September 16, wednesday
0000
55°F
N
8 mph
8 mph
0300
52°F
N
7 mph
7 mph
0600
46°F
N
5 mph
5 mph
0900
50°F
NE
3 mph
3 mph
1200
54°F
SE
4 mph
4 mph
1500
59°F
SE
7 mph
7 mph
