Average data for 10 years
1 September
Monday
+15°
+11°
2 September
Tuesday
+16°
+11°
3 September
Wednesday
+15°
+11°
4 September
Thursday
+15°
+11°
5 September
Friday
+15°
+11°
6 September
Saturday
+15°
+11°
7 September
Sunday
+15°
+11°
8 September
Monday
+15°
+12°
9 September
Tuesday
+15°
+12°
10 September
Wednesday
+15°
+12°
11 September
Thursday
+14°
+12°
12 September
Friday
+14°
+11°
13 September
Saturday
+14°
+10°
14 September
Sunday
+14°
+11°
15 September
Monday
+13°
+9°
16 September
Tuesday
+12°
+10°
17 September
Wednesday
+13°
+10°
18 September
Thursday
+13°
+9°
19 September
Friday
+12°
+9°
20 September
Saturday
+13°
+8°
21 September
Sunday
+12°
+9°
22 September
Monday
+12°
+9°
23 September
Tuesday
+11°
+8°
24 September
Wednesday
+12°
+8°
25 September
Thursday
+12°
+9°
26 September
Friday
+13°
+8°
27 September
Saturday
+12°
+9°
28 September
Sunday
+12°
+8°
29 September
Monday
+12°
+9°
30 September
Tuesday
+10°
+8°
Cities with similar weather in September
Finland
Helsinki
Latvia
Riga
Estonia
Tallinn
Sweden
Stockholm
Latvia
Yurmala
In September, the weather in Oslo is typically warm. Average daily high temperature in September is about 13 degrees above zero. On average, Oslo has 11 rainy, 9 sunny, 9 partly cloudy, and 1 cloudy day in September. The rains are usually moderate.