World Resorts USA Kailua Kona Weather

Kailua Kona sea water temperature

Current sea water temperature:
+77.5°F
Minimum sea water temperature in March: 79.2°F
Maximum sea water temperature in March: 74.8°F
Average sea water temperature in March: 76.9°F

Sea water temperature for the last 10 days:

March 16 77.5°F March 11 77.2°F
March 15 77.5°F March 10 77.2°F
March 14 77.2°F March 9 77.2°F
March 13 77.7°F March 8 76.6°F
March 12 77.2°F March 7 76.6°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.

Best time for vacation in Kailua Kona

Sunniest months:
January 22 days
December 20 days
February 19 days
Warmest months:
September 82.4 °F
August 82.1 °F
July 82.1 °F
Warmest sea temp:
September 81.3 °F
October 81.1 °F
August 80.9 °F
Coldest months:
January 76.9 °F
February 77.2 °F
March 78.0 °F
Rainiest months:
September 2 days
July 2 days
August 2 days
Windiest months:
May 7.0 mph
April 6.8 mph
June 6.5 mph

Kailua Kona on a weather map

Kailua Kona
+77°F
N 14 mph
Feels like: +81°F
Precip.: 100%
Places in USA:
Name
°F
+37°F
+75°F
+75°F
+72°F
+64°F
+72°F
+75°F
+70°F
+52°F
+66°F
+59°F
+59°F
+59°F
+39°F
+19°F
24 Hours Forecast
Kailua Kona
Local time: 17:54
March 16, monday
1800
77°F
N
14 mph
2100
73°F
N
12 mph
March 17, tuesday
0000
73°F
N
10 mph
0300
73°F
N
9 mph
0600
73°F
N
6 mph
0900
75°F
NE
2 mph
1200
77°F
SE
7 mph
1500
77°F
SE
6 mph
Units of measurement: °C / °F