Average data for 10 years
1 September
Monday
+25°
+22°
2 September
Tuesday
+25°
+22°
3 September
Wednesday
+24°
+21°
4 September
Thursday
+24°
+21°
5 September
Friday
+24°
+21°
6 September
Saturday
+24°
+22°
7 September
Sunday
+24°
+22°
8 September
Monday
+24°
+22°
9 September
Tuesday
+24°
+21°
10 September
Wednesday
+24°
+21°
11 September
Thursday
+24°
+22°
12 September
Friday
+24°
+22°
13 September
Saturday
+24°
+22°
14 September
Sunday
+24°
+22°
15 September
Monday
+24°
+22°
16 September
Tuesday
+25°
+22°
17 September
Wednesday
+24°
+22°
18 September
Thursday
+24°
+21°
19 September
Friday
+24°
+21°
20 September
Saturday
+24°
+22°
21 September
Sunday
+24°
+21°
22 September
Monday
+24°
+21°
23 September
Tuesday
+24°
+21°
24 September
Wednesday
+24°
+22°
25 September
Thursday
+24°
+21°
26 September
Friday
+24°
+22°
27 September
Saturday
+24°
+22°
28 September
Sunday
+24°
+21°
29 September
Monday
+24°
+21°
30 September
Tuesday
+24°
+22°
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In September, the weather in Kailua-Kona is typically warm. Average daily high temperature in September is about 24 degrees above zero. On average, Kailua-Kona has 29 rainy and 1 cloudy day in September. The rains are usually heavy. September as well as January, February, March, and April is considered the most uncomfortable time to visit Kailua-Kona.