Average data for 10 years
1 September
Monday
+18°
+11°
2 September
Tuesday
+18°
+11°
3 September
Wednesday
+18°
+11°
4 September
Thursday
+18°
+11°
5 September
Friday
+18°
+12°
6 September
Saturday
+17°
+11°
7 September
Sunday
+18°
+12°
8 September
Monday
+18°
+11°
9 September
Tuesday
+17°
+11°
10 September
Wednesday
+17°
+10°
11 September
Thursday
+16°
+11°
12 September
Friday
+16°
+9°
13 September
Saturday
+16°
+9°
14 September
Sunday
+16°
+10°
15 September
Monday
+16°
+10°
16 September
Tuesday
+16°
+9°
17 September
Wednesday
+16°
+9°
18 September
Thursday
+16°
+9°
19 September
Friday
+16°
+10°
20 September
Saturday
+16°
+10°
21 September
Sunday
+17°
+10°
22 September
Monday
+16°
+9°
23 September
Tuesday
+15°
+9°
24 September
Wednesday
+15°
+9°
25 September
Thursday
+15°
+9°
26 September
Friday
+15°
+9°
27 September
Saturday
+15°
+9°
28 September
Sunday
+15°
+9°
29 September
Monday
+15°
+9°
30 September
Tuesday
+15°
+9°
Cities with similar weather in September
Finland
Helsinki
Latvia
Riga
Czech Republic
Karlovy Vary
Estonia
Tallinn
Sweden
Stockholm
In September, the weather in Portlaoise is typically warm. Average daily high temperature in September is about 16 degrees above zero. On average, Portlaoise has 13 rainy, 8 cloudy, 6 partly cloudy, and 3 sunny days in September. The rains are usually moderate.