Average data for 10 years
1 September
Sunday
+28°
+22°
2 September
Monday
+28°
+22°
3 September
Tuesday
+27°
+21°
4 September
Wednesday
+26°
+20°
5 September
Thursday
+26°
+19°
6 September
Friday
+25°
+20°
7 September
Saturday
+26°
+20°
8 September
Sunday
+25°
+20°
9 September
Monday
+25°
+19°
10 September
Tuesday
+25°
+19°
11 September
Wednesday
+23°
+17°
12 September
Thursday
+23°
+18°
13 September
Friday
+24°
+18°
14 September
Saturday
+25°
+19°
15 September
Sunday
+22°
+18°
16 September
Monday
+23°
+17°
17 September
Tuesday
+25°
+18°
18 September
Wednesday
+24°
+19°
19 September
Thursday
+24°
+18°
20 September
Friday
+25°
+19°
21 September
Saturday
+25°
+19°
22 September
Sunday
+24°
+19°
23 September
Monday
+24°
+17°
24 September
Tuesday
+23°
+18°
25 September
Wednesday
+22°
+18°
26 September
Thursday
+22°
+17°
27 September
Friday
+22°
+17°
28 September
Saturday
+21°
+16°
29 September
Sunday
+19°
+15°
30 September
Monday
+18°
+13°
Cities with similar weather in September
Azerbaijan
Baku
Montenegro
Budva
Italy
Milan
Spain
Madrid
Italy
Venice
September in Portsmouth is the sunniest month of the year. In September, the weather in Portsmouth is typically warm. Average daily high temperature in September is about 24 degrees above zero. On average, Portsmouth has 20 sunny, 5 rainy, and 5 partly cloudy days in September. The rains are usually light. September as well as August is considered the most comfortable time to visit Portsmouth.