01.09
tue
tue
Day
81°F
SE 6 mph
Precip.
4%
4%
Night
75°F
S 7 mph
Precip.
7%
7%
02.09
wed
wed
Day
81°F
NE 9 mph
Precip.
4%
4%
Night
75°F
NE 3 mph
Precip.
27%
27%
03.09
thu
thu
Day
81°F
E 4 mph
Precip.
16%
16%
Night
77°F
SW 2 mph
Precip.
12%
12%
04.09
fri
fri
Day
79°F
NE 6 mph
Precip.
19%
19%
Night
77°F
SE 3 mph
Precip.
15%
15%
05.09
sat
sat
Day
81°F
E 6 mph
Precip.
21%
21%
Night
77°F
NE 5 mph
Precip.
41%
41%
06.09
sun
sun
Day
81°F
E 6 mph
Precip.
16%
16%
Night
77°F
SW 7 mph
Precip.
19%
19%
07.09
mon
mon
Day
84°F
S 17 mph
Precip.
8%
8%
Night
77°F
S 8 mph
Precip.
18%
18%
08.09
tue
tue
Day
79°F
E 10 mph
Precip.
6%
6%
Night
75°F
N 6 mph
Precip.
21%
21%
09.09
wed
wed
Day
81°F
SE 8 mph
Precip.
5%
5%
Night
77°F
N 8 mph
Precip.
10%
10%
10.09
thu
thu
Day
81°F
E 8 mph
Precip.
23%
23%
Night
77°F
E 3 mph
Precip.
47%
47%
11.09
fri
fri
Day
81°F
E 8 mph
Precip.
29%
29%
Night
77°F
NE 4 mph
Precip.
25%
25%
12.09
sat
sat
Day
81°F
NE 7 mph
Precip.
23%
23%
Night
75°F
N 8 mph
Precip.
44%
44%
13.09
sun
sun
Day
77°F
E 6 mph
Precip.
28%
28%
Night
73°F
SE 5 mph
Precip.
30%
30%
sea water
temperature
temperature
| Kailua Kona |
monthly
weather
weather
| Kailua Kona |
current
weather
weather
| Kailua Kona |
7 days
forecast
forecast
| Kailua Kona |
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 80.9°F. The highest and lowest sea temperatures during the month were 81.3°F and 80.1°F.
Air temperature in Kailua Kona, °F
Precipitation total in Kailua Kona, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Kailua Kona
Kailua Kona on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Kailua Kona
Local time: 00:03
September 01, tuesday
0300
75°F
NE
1 mph
1 mph
0600
75°F
SW
4 mph
4 mph
0900
79°F
S
5 mph
5 mph
1200
81°F
SE
6 mph
6 mph
1500
79°F
NE
7 mph
7 mph
1800
77°F
NE
6 mph
6 mph
2100
77°F
SE
3 mph
3 mph
September 02, wednesday
0000
75°F
S
7 mph
7 mph
