Average data for 10 years
1 September
Sunday
+24°
+19°
2 September
Monday
+23°
+19°
3 September
Tuesday
+23°
+18°
4 September
Wednesday
+23°
+19°
5 September
Thursday
+24°
+19°
6 September
Friday
+25°
+19°
7 September
Saturday
+23°
+18°
8 September
Sunday
+22°
+18°
9 September
Monday
+23°
+18°
10 September
today
+23°
+18°
11 September
tomorrow
+23°
+18°
12 September
Thursday
+23°
+19°
13 September
Friday
+23°
+18°
14 September
Saturday
+22°
+18°
15 September
Sunday
+21°
+17°
16 September
Monday
+20°
+16°
17 September
Tuesday
+20°
+17°
18 September
Wednesday
+22°
+18°
19 September
Thursday
+24°
+19°
20 September
Friday
+23°
+18°
21 September
Saturday
+21°
+17°
22 September
Sunday
+21°
+18°
23 September
Monday
+22°
+18°
24 September
Tuesday
+21°
+17°
25 September
Wednesday
+22°
+17°
26 September
Thursday
+21°
+18°
27 September
Friday
+23°
+18°
28 September
Saturday
+23°
+18°
29 September
Sunday
+22°
+18°
30 September
Monday
+22°
+18°
In September, the weather in Porto is typically warm. Average daily high temperature in September is about 22 degrees above zero. On average, Porto has 24 sunny, 4 partly cloudy, and 2 rainy days in September. The rains are usually light. September as well as July and August is considered the most comfortable time to visit Porto.