World Resorts USA Kailua Kona Weather

Kailua Kona weather in August

Weather in Kailua Kona: August

Average day temperature: 82.1°F
Average night temperature: 76.4°F
Sea water temperature: 80.9°F
Number of sunny days: 14 days
Day length: 12.5 - 13.0 hours
Number of rainy days: 2 days
Precipitation totals: 1.8 in.

Air temperature in August, °F

Show year:
2025
2024
2023

The highest day temperature during August of 2025 was 82°F. At the same time the lowest night temperature was 75°F. Daily and nightly averages during August were 79.8°F and 76.2°F.

Sea water temperature in Kailua Kona 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.

Sunny, partly cloudy and cloudy days

Mostly all days in August are partly cloudy but sunny or cloudy days are also possible.

Precipitation total in August, in.

Precipitation total value in Kailua Kona in August is 1.7 in. Other months of the year show relatively similar values.

Wind speed in August, mph

The average wind speed value in August is 5.9 mph

Average sunny hours

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in August is: 7.0.

Best time for vacation in Kailua Kona

Sunniest months:
January 23 days
December 21 days
February 20 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 77.1 °F
February 77.4 °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
+75°F
N 9 mph
Feels like: +79°F
Precip.: 0%
Places in USA:
Name
°F
+30°F
+75°F
+75°F
+41°F
+52°F
+70°F
+77°F
+70°F
+21°F
+54°F
+46°F
+61°F
+61°F
+46°F
+5°F
24 Hours Forecast
Kailua Kona
Local time: 20:54
December 04, thursday
2100
75°F
N
9 mph
December 05, friday
0000
73°F
NW
4 mph
0300
73°F
S
9 mph
0600
73°F
S
6 mph
0900
77°F
N
6 mph
1200
79°F
E
8 mph
1500
77°F
SE
11 mph
1800
75°F
N
4 mph
Units of measurement: °C / °F