Average data for 10 years
1 September
Sunday
+24°
+21°
2 September
Monday
+24°
+20°
3 September
Tuesday
+24°
+21°
4 September
Wednesday
+23°
+20°
5 September
Thursday
+24°
+21°
6 September
Friday
+24°
+21°
7 September
Saturday
+23°
+20°
8 September
Sunday
+22°
+20°
9 September
Monday
+23°
+20°
10 September
Tuesday
+22°
+20°
11 September
Wednesday
+22°
+19°
12 September
Thursday
+22°
+19°
13 September
Friday
+22°
+20°
14 September
Saturday
+23°
+20°
15 September
today
+23°
+21°
16 September
tomorrow
+22°
+19°
17 September
Tuesday
+21°
+18°
18 September
Wednesday
+21°
+19°
19 September
Thursday
+22°
+19°
20 September
Friday
+21°
+18°
21 September
Saturday
+22°
+19°
22 September
Sunday
+23°
+20°
23 September
Monday
+24°
+22°
24 September
Tuesday
+24°
+22°
25 September
Wednesday
+25°
+22°
26 September
Thursday
+25°
+21°
27 September
Friday
+24°
+22°
28 September
Saturday
+23°
+20°
29 September
Sunday
+23°
+21°
30 September
Monday
+24°
+21°
Cities with similar weather in September
Spain
Barcelona
Italy
Rome
Georgia
Batumi
Greece
Heraklion
France
Nice
September in Costa Mesa is the warmest month of the year. In September, the weather in Costa Mesa is typically warm. Average daily high temperature in September is about 23 degrees above zero. On average, Costa Mesa has 30 sunny days in September. September as well as July, August, and October is considered the most comfortable time to visit Costa Mesa.