Current sea water temperature:
+81.9°F
| Minimum sea water temperature in September: | 85.3°F |
| Maximum sea water temperature in September: | 78.1°F |
| Average sea water temperature in September: | 81.3°F |
| more information | |
14 days
forecast
forecast
| Kailua Kona |
monthly
weather
weather
| Kailua Kona |
Sea water temperature for the last 10 days:
| September 1 | 81.9°F | August 27 | 82.0°F |
| August 31 | 82.4°F | August 26 | 82.0°F |
| August 30 | 81.9°F | August 25 | 82.2°F |
| August 29 | 81.7°F | August 24 | 82.8°F |
| August 28 | 81.9°F | August 23 | 82.4°F |
Monthly sea water temperature, °F
When is the warmest sea in Kailua Kona?
Based on the data about daily sea water temperature for the last three years the warmest sea in Kailua Kona was noticed in September, October and August.
Monthly Sea Temperatures in Kailua Kona, °F
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.
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 80.9°F. The highest and lowest sea temperatures during the month were 81.3°F and 80.4°F.
Sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 81.8°F. The highest and lowest sea temperatures during the month were 82.8°F and 81.0°F.
current
weather
weather
| Kailua Kona |
weather in
September
September
| Kailua Kona |
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: 00:52
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
