Porsgrunn in september: average Weather, Temperature and Climate
Weather in Porsgrunn in september 2025
The weather in Porsgrunn in september comes from statistical datas on the last years. You can view the weather statistics for all the month, but also navigating through the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
good weather
Weather at 6am
52°F
Clear/Sunny
37% of time
27%
18%
10%
Weather at 12pm
61°F
Clear/Sunny
38% of time
28%
17%
12%
Weather at 6pm
56°F
Clear/Sunny
39% of time
27%
16%
11%
Weather at 3am
52°F
39%
23%
16%
14%
Evolution of daily average temperature and precipitation in Porsgrunn in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Porsgrunn in september.
The climate of Porsgrunn in september is good
In september in Porsgrunn, the climate is wet (with 4.3in of precipitation over 5 days). It should be noted an improvement from the previous month since in august it receives an average of 4.6in of rainfall over 7 days.
The climate is relatively cold in that area september, but it is livable when dressing warm. The high seasonal norm is 61°F. The seasonal minimum is 52°F. Thus, the mean temperature average in september in Porsgrunn is 58°F. Note that seasonal normals in contrast with those observed in Porsgrunn in the month of september with a maximum record of 83°F in 2021 and a minimum record of 38°F in 2010. You can hope to have about 8 days with temperatures above 65°F, or 27% of the month.
Day length in Porsgrunn in september is 12:50. The sun rises at 05:51 and sets at 18:41.
With a correct weather, this month is okay (but not good) to go in this locality.
Seasonal average climate and temperature of Porsgrunn in september
Check below seasonal norms These statistics are compiled from the weather statements of the past years of the month of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 58°F | ||||
| Highest temperature | 61°F | ||||
| Lowest temperature | 52°F | ||||
| Highest record temperature | 83°F (2021) | ||||
| Lowest record temperature | 38°F (2010) | ||||
| Number of days at +65°F | 8 day(s) (27%) | ||||
| Number of days at -32°F | 0 day(s) (0%) | ||||
| Sea temperature | |||||
| Average sea temperature | 61°F | ||||
| Lowest sea temperature | 57°F | ||||
| Highest sea temperature | 65°F | ||||
| Wind | |||||
| Wind speed | 18km/h | ||||
| Wind temperature | 49°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 4.3in | ||||
| Number of days with rainfall | 5 day(s) (16%) | ||||
| Record daily rainfall | 2.8in (2015) | ||||
| Snowfall | 0cm | ||||
| Other climate data | |||||
| Humidity | 85% | ||||
| Visibility | 9.28km | ||||
| Cloud cover | 44% | ||||
| UV index | 4 | ||||
| Daily sunshine hours | 12 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 05:51 | ||||
| Time of sunset | 18:41 | ||||
| Length of day | 12:50 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | good | ||||
How was the weather last september?
Here is the day by day recorded weather in Porsgrunn in september 2024:
54°F to 65°F
56°F to 61°F
59°F to 61°F
61°F to 67°F
61°F to 72°F
61°F to 68°F
63°F to 68°F
63°F to 67°F
59°F to 63°F
56°F to 59°F
52°F to 56°F
49°F to 59°F
45°F to 59°F
45°F to 58°F
52°F to 61°F
58°F to 61°F
54°F to 61°F
54°F to 63°F
56°F to 63°F
56°F to 63°F
56°F to 63°F
56°F to 63°F
54°F to 61°F
56°F to 58°F
54°F to 59°F
45°F to 54°F
47°F to 52°F
47°F to 54°F
41°F to 54°F
47°F to 56°F
Map: other cities in Norway in september
Cities near Porsgrunn:
| Skien in september | good weather |
| Larvik in september | good weather |
| Sandefjord in september | good weather |
| Kragero in september | good weather |
| Tønsberg in september | good weather |
| Notodden in september | tolerable weather |
| Risør in september | good weather |
| Horten in september | good weather |
| Kongsberg in september | tolerable weather |
| Moss in september | good weather |
| Seljord in september | tolerable weather |
| Fredrikstad in september | good weather |
Click over cities on the map for information about the weather in september.
Porsgrunn
perfect weather
good
tolerable
bad
very bad
Weather data for Porsgrunn in september:
Weather data for Porsgrunn for september are derived from an average of the weather forecast since 2009 in Porsgrunn. There is a margin of error and these forecasts are to be considered as general information only. The weather in Porsgrunn 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 Porsgrunn.