Measurements:
°C
°F
Kailua Kona
84°F
E 5 mph
Feels like: 88°F
Precip: 19%
World Resorts USA Kailua Kona Weather

Kailua Kona Sea Water Temperature

Current Sea Water Temperature:
+85.0°F
Maximum Sea Water Temperature in October: 87.2°F
Minimum Sea Water Temperature in October: 81.4°F
Average water temperature in October: 84.6°F

Sea Water Temperature for the Last 10 Days:

October 26 85.0°F October 21 85.4°F
October 25 85.2°F October 20 85.8°F
October 24 84.6°F October 19 85.8°F
October 23 84.8°F October 18 85.6°F
October 22 85.2°F October 17 85.6°F

When is the Warmest Sea for Kailua Kona?

According to our data for the last three years for Kailua Kona the highest average sea water temperature was in September, October and August.

Average Water Temperature by Month, °F

Sea Water Temperature in September

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Kailua Kona was 86.1°F. The maximum and minimum values were 85.2°F and 87.0°F respectively.

Sea Water Temperature in October

Select Year: 2026 2025 2024

The average sea surface temperature in October 2026 for Kailua Kona was 85.5°F. The maximum and minimum values were 84.6°F and 86.4°F respectively.

Sea Water Temperature in August

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Kailua Kona was 85.3°F. The maximum and minimum values were 84.4°F and 86.4°F respectively.

Best Time to Visit Kailua Kona
The most sunny months:
January 22 days
December 20 days
February 19 days
The most warm months:
September 85.8 °F
July 85.5 °F
August 85.5 °F
Warmest sea temperature:
September 84.9 °F
October 84.6 °F
August 84.4 °F
The most cold months:
January 79.9 °F
February 80.2 °F
March 81.0 °F
The most rainy months:
September 2 days
July 2 days
August 2 days
The most windy months:
May 6 mph
April 6 mph
June 6 mph

Kailua Kona on the Weather Map

USA Resorts:
NAME
F°
Boston +60
Chicago +58
Hawaii +82
Houston +76
Las Vegas +70
Los Angeles +76
Maui +78
Miami +82
New York +64
Panama City Beach +66
San Diego +74
San Francisco +62
Santa Monica +74
Tampa +76
Washington +60
24 Hours Weather Forecast
Kailua Kona
Local time: 15:59
26 oct, monday
1800 82°F
SE
4 mph
2100 80°F
NE
4 mph
27 oct, tuesday
0000 80°F
N
7 mph
0300 80°F
N
5 mph
0600 80°F
NW
2 mph
0900 82°F
E
3 mph
1200 84°F
E
6 mph
1500 84°F
E
6 mph