Longyearbyen in september: average Weather, Temperature and Climate
Weather in Longyearbyen in september 2025
The weather in Longyearbyen in september comes from statistical datas on the past 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
very bad weather 125.3cm
Weather at 6am
34°F
Cloudy
26% of time
20%
14%
14%
Weather at 12pm
36°F
Partly Cloudy
24% of time
23%
14%
12%
Weather at 6pm
34°F
Partly Cloudy
25% of time
22%
17%
11%
Weather at 3am
32°F
21%
18%
17%
15%
Evolution of daily average temperature and precipitation in Longyearbyen in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Longyearbyen in september.
The climate of Longyearbyen in september is very bad
the weather in Longyearbyen in september is wet (with 2.7in of precipitation over 5 days). The situation is deteriorating compared to the previous month since in august there is an average of 2.3in of rainfall over 4 days.
The climate is rather cold in that area september. Plan to cover you well! The high seasonal norm is 36°F. In the morning the temperature drops to 32°F. Thus, the mean temperature average on this month of september in Longyearbyen is 34°F. Note that seasonal normals in contrast with those observed in Longyearbyen in september with a maximum record of 49°F in 2017 and a minimum record of 7°F in 2014. You can expect to have about 16 days with temperatures under 32°F, or 53% of time.
On average, in Longyearbyen, the days of september last 14:24. The sun rises at 04:38 and sets at 19:02.
September: another location in Norway?
If you want to go to Norway in september, there are destinations with better weather than Longyearbyen:
In september, Kristiansand, Sandefjord, Arendal, Drobak, Fredrikstad and Grimstad have good weather.
Finally, Oslo, Bergen, Stavanger, Trondheim, Ålesund and Flekkefjord have a tolerable climate, but better than Longyearbyen.
Seasonal average climate and temperature of Longyearbyen in september
Check below seasonal norms These statistics are set from the weather statements of the last years of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 34°F | ||||
| Highest temperature | 36°F | ||||
| Lowest temperature | 32°F | ||||
| Highest record temperature | 49°F (2017) | ||||
| Lowest record temperature | 7°F (2014) | ||||
| Number of days at -32°F | 16 day(s) (53%) | ||||
| Wind | |||||
| Wind speed | 13km/h | ||||
| Wind temperature | 27°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 2.7in | ||||
| Number of days with rainfall | 5 day(s) (15%) | ||||
| Record daily rainfall | 1.6in (2015) | ||||
| Snowfall | 125.3cm | ||||
| Other climate data | |||||
| Humidity | 92% | ||||
| Visibility | 7.2km | ||||
| Cloud cover | 67% | ||||
| UV index | 2 | ||||
| Daily sunshine hours | 11 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 04:38 | ||||
| Time of sunset | 19:02 | ||||
| Length of day | 14:24 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | very bad | ||||
How was the weather last september?
Here is the day by day recorded weather in Longyearbyen in september 2024:
38°F to 43°F
43°F to 47°F
45°F to 50°F
43°F to 47°F
36°F to 45°F
32°F to 36°F
31°F to 32°F
29°F to 32°F
34°F to 36°F
32°F to 34°F
31°F to 34°F
31°F to 34°F
36°F to 40°F
40°F to 41°F
40°F to 41°F
40°F to 41°F
41°F to 43°F
38°F to 41°F
36°F to 38°F
32°F to 34°F
29°F to 32°F
25°F to 29°F
23°F to 29°F
25°F to 29°F
25°F to 29°F
32°F to 34°F
27°F to 31°F
25°F to 29°F
31°F to 34°F
31°F to 31°F
Map: other cities in Norway in september
Cities near Longyearbyen:
| Spitzberg (Svalbard) in september | very bad weather |
| Svalbard in september | very bad weather |
| Edgeøya in september | very bad weather |
| Nordaustlandet in september | very bad weather |
| Hamn (Senja Island) in september | bad weather |
| Andenes in september | bad weather |
| Finnsnes in september | bad weather |
| Harstad in september | bad weather |
| Sortland in september | bad weather |
| Straume in september | bad weather |
| Stokmarknes in september | bad weather |
| Narvik in september | bad weather |
Click over cities on the map for information about the weather in september.
Longyearbyen
perfect weather
good
tolerable
bad
very bad
Weather data for Longyearbyen in september:
Weather data for Longyearbyen for september are derived from an average of the weather forecast since 2009 in Longyearbyen. There is a margin of error and these forecasts are to be considered as general information only. The weather in Longyearbyen 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 Longyearbyen.