Current sea water temperature:
+78.6°F
| Minimum sea water temperature in January: | 79.2°F |
| Maximum sea water temperature in January: | 75.6°F |
| Average sea water temperature in January: | 77.4°F |
| more information | |
14 days
forecast
forecast
| Kailua Kona |
monthly
weather
weather
| Kailua Kona |
Sea water temperature for the last 10 days:
| December 31 | 78.6°F | December 26 | 79.0°F |
| December 30 | 78.6°F | December 25 | 79.0°F |
| December 29 | 78.6°F | December 24 | 79.2°F |
| December 28 | 78.6°F | December 23 | 79.2°F |
| December 27 | 78.8°F | December 22 | 79.3°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:
2025
2024
2023
The average sea water temperature in August of 2025 was 80.9°F. The highest and lowest sea temperatures during the month were 81.1°F and 80.6°F.
current
weather
weather
| Kailua Kona |
weather in
January
January
| 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: 13:32
December 31, wednesday
1500
75°F
NE
7 mph
7 mph
1800
73°F
NE
4 mph
4 mph
2100
73°F
NE
4 mph
4 mph
January 01, thursday
0000
72°F
SE
1 mph
1 mph
0300
72°F
S
1 mph
1 mph
0600
72°F
SE
1 mph
1 mph
0900
73°F
NE
3 mph
3 mph
1200
77°F
E
5 mph
5 mph
