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