Average data for 10 years
1 September
Monday
+17°
+11°
2 September
Tuesday
+16°
+12°
3 September
Wednesday
+16°
+12°
4 September
Thursday
+17°
+12°
5 September
Friday
+16°
+12°
6 September
Saturday
+16°
+12°
7 September
Sunday
+16°
+12°
8 September
Monday
+16°
+11°
9 September
Tuesday
+16°
+11°
10 September
Wednesday
+16°
+11°
11 September
Thursday
+15°
+11°
12 September
Friday
+15°
+10°
13 September
Saturday
+15°
+10°
14 September
Sunday
+15°
+11°
15 September
Monday
+15°
+10°
16 September
Tuesday
+15°
+10°
17 September
Wednesday
+15°
+10°
18 September
Thursday
+15°
+10°
19 September
Friday
+15°
+10°
20 September
Saturday
+15°
+10°
21 September
Sunday
+15°
+10°
22 September
Monday
+15°
+10°
23 September
Tuesday
+14°
+10°
24 September
Wednesday
+14°
+10°
25 September
Thursday
+15°
+10°
26 September
Friday
+14°
+10°
27 September
Saturday
+14°
+10°
28 September
Sunday
+14°
+10°
29 September
Monday
+14°
+10°
30 September
Tuesday
+14°
+10°
Cities near you
Ireland
Dublin
United Kingdom
Edinburgh
United Kingdom
Manchester
United Kingdom
Liverpool
United Kingdom
Glasgow
Cities with similar weather in September
Finland
Helsinki
Latvia
Riga
Estonia
Tallinn
Sweden
Stockholm
Norway
Oslo
In September, the weather in Belfast is typically warm. Average daily high temperature in September is about 15 degrees above zero. On average, Belfast has 15 rainy, 6 cloudy, 6 partly cloudy, and 3 sunny days in September. The rains are usually heavy. September as well as January, February, March, and April is considered the most uncomfortable time to visit Belfast.