Oslo in september: average Weather, Temperature and Climate
Weather in Oslo in september 2025
The weather in Oslo in september comes from statistical datas on the past years. You can view the weather statistics for all the month, but also by using the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
tolerable weather
Weather at 6am
49°F
Clear/Sunny
31% of time
21%
15%
13%
Weather at 12pm
59°F
Clear/Sunny
30% of time
27%
20%
14%
Weather at 6pm
54°F
Clear/Sunny
30% of time
24%
21%
12%
Weather at 3am
49°F
27%
24%
18%
13%
Evolution of daily average temperature and precipitation in Oslo in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Oslo in september.
The climate of Oslo in september is tolerable
In september in Oslo, the climate is relatively dry (with 5in of precipitation over 7 days). This is better than the previous month since in august it receives an average of 6.4in of rainfall over 10 days.
The climate is rather fresh in that locality this month, but it is tolerable when dressing hot. The thermometer averaged maximum of 59°F. In the morning the temperature drops to 49°F. Thus, the mean temperature average on this month of september in Oslo is 54°F. Note that these seasonal averages are in contrast with those observed in Oslo in the month of september with a maximum record of 76°F in 2016 and a minimum record of 32°F in 2018. You can plan to have about 6 days with temperatures over 65°F, or 20% of the month.
On this month of september, day length in Oslo is generally 12:52. The sun rises at 05:45 and sets at 18:37.
With proper weather, the month of september is okay (but not good) to go there in Norway.
Oslo: another month?
If you can push the dates of your trip to Oslo forward, the month of october has a better weather forecast than september. more information
September: another location in Norway?
If you want to go to Norway in september, there are destinations with better weather than Oslo:
In september, Kristiansand, Sandefjord, Arendal, Drobak, Fredrikstad and Grimstad have good weather.
Seasonal average climate and temperature of Oslo in september
Check below seasonal norms These datas are generated from the weather statements earlier years of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 54°F | ||||
| Highest temperature | 59°F | ||||
| Lowest temperature | 49°F | ||||
| Highest record temperature | 76°F (2016) | ||||
| Lowest record temperature | 32°F (2018) | ||||
| Number of days at +65°F | 6 day(s) (20%) | ||||
| Number of days at -32°F | 0 day(s) (0%) | ||||
| Sea temperature | |||||
| Average sea temperature | 60°F | ||||
| Lowest sea temperature | 56°F | ||||
| Highest sea temperature | 65°F | ||||
| Wind | |||||
| Wind speed | 13km/h | ||||
| Wind temperature | 47°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 5in | ||||
| Number of days with rainfall | 7 day(s) (22%) | ||||
| Record daily rainfall | 2.8in (2019) | ||||
| Snowfall | 0cm | ||||
| Other climate data | |||||
| Humidity | 89% | ||||
| Visibility | 8.26km | ||||
| Cloud cover | 50% | ||||
| UV index | 4 | ||||
| Daily sunshine hours | 11 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 05:45 | ||||
| Time of sunset | 18:37 | ||||
| Length of day | 12:52 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | tolerable | ||||
How was the weather last september?
Here is the day by day recorded weather in Oslo in september 2024:
47°F to 72°F
50°F to 58°F
52°F to 58°F
54°F to 65°F
52°F to 77°F
56°F to 77°F
54°F to 76°F
56°F to 67°F
59°F to 63°F
56°F to 61°F
41°F to 56°F
43°F to 59°F
36°F to 59°F
34°F to 61°F
40°F to 67°F
49°F to 56°F
45°F to 65°F
45°F to 68°F
47°F to 70°F
47°F to 70°F
49°F to 68°F
50°F to 67°F
45°F to 65°F
52°F to 54°F
52°F to 59°F
41°F to 50°F
43°F to 52°F
36°F to 52°F
31°F to 54°F
34°F to 54°F
Map: other cities in Norway in september
Cities near Oslo:
| Lillestrøm in september | tolerable weather |
| Drobak in september | good weather |
| Jessheim in september | tolerable weather |
| Drammen in september | tolerable weather |
| Honefoss in september | tolerable weather |
| Moss in september | good weather |
| Horten in september | good weather |
| Velmunden in september | tolerable weather |
| Kongsberg in september | tolerable weather |
| Sarpsborg in september | good weather |
| Tønsberg in september | good weather |
| Kongsvinger in september | tolerable weather |
Click over cities on the map for information about the weather in september.
Oslo
perfect weather
good
tolerable
bad
very bad
Weather data for Oslo in september:
Weather data for Oslo for september are derived from an average of the weather forecast since 2009 in Oslo. There is a margin of error and these forecasts are to be considered as general information only. The weather in Oslo can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Oslo.