Average data for 10 years
1 September
Sunday
+1°
0°
2 September
Monday
+2°
0°
3 September
Tuesday
+2°
+1°
4 September
Wednesday
+2°
+1°
5 September
Thursday
+2°
+1°
6 September
Friday
+2°
+1°
7 September
Saturday
+2°
0°
8 September
Sunday
+2°
0°
9 September
Monday
+2°
+1°
10 September
Tuesday
+1°
+1°
11 September
Wednesday
+2°
0°
12 September
Thursday
+3°
+1°
13 September
Friday
+2°
+1°
14 September
Saturday
+1°
+1°
15 September
Sunday
+2°
0°
16 September
Monday
+2°
+1°
17 September
Tuesday
+1°
0°
18 September
Wednesday
+2°
+1°
19 September
Thursday
+1°
0°
20 September
Friday
+1°
0°
21 September
Saturday
+2°
+1°
22 September
Sunday
+2°
+1°
23 September
Monday
+1°
+1°
24 September
Tuesday
+1°
0°
25 September
Wednesday
0°
−1°
26 September
Thursday
0°
−1°
27 September
Friday
+1°
0°
28 September
Saturday
0°
0°
29 September
Sunday
0°
−1°
30 September
Monday
−2°
−2°
Cities with similar weather in September
Greenland
Nuuk
Argentina
Ushuaia
Chile
Punta-Arenas
Argentina
San-Carlos-de-Bariloche
China
Shiquanhe
September in Longyearbyen is the rainiest month of the year. In September, the weather in Longyearbyen is typically cold. Average daily high temperature in September is about 1 degree above zero. On average, Longyearbyen has 19 rainy, 7 cloudy, and 4 snowy days in September. The rains are usually moderate. September as well as January, February, March, and June is considered the most uncomfortable time to visit Longyearbyen.