Climate and monthly weather forecast
Kailua-Kona, HI

Kailua-Kona, Hawaii, surrounded by clear waters
Kailua-Kona, Hawaii, surrounded by clear waters

The best time to visit Kailua-Kona

The best months for a swim in Kailua-Kona, Hawaii, are May through December, with a perfect temperature - varying between 77°F (25°C) and 84.2°F (29°C), and scarce rainfall.

Weather in January

January, like December, in Kailua-Kona, Hawaii, is another warm winter month, with an average temperature ranging between min 68.2°F (20.1°C) and max 81.7°F (27.6°C). In Kailua-Kona, the average high-temperature in January is essentially the same as in December - a still warm 81.7°F (27.6°C). Weather in January »

Weather in February

February, the last month of the winter in Kailua-Kona, is also a moderately hot month, with an average temperature varying between 68°F (20°C) and 81.1°F (27.3°C). February is the coldest month, with an average high-temperature of 81.1°F (27.3°C) and an average low-temperature of 68°F (20°C). Weather in February »

Weather in March

The first month of the spring, March, is also a moderately hot month in Kailua-Kona, Hawaii, with an average temperature varying between 70°F (21.1°C) and 82.2°F (27.9°C). In Kailua-Kona, the average high-temperature in March is almost the same as in February - a still warm 82.2°F (27.9°C). Weather in March »

Weather in April

April, the same as March, is another warm spring month in Kailua-Kona, Hawaii, with an average temperature fluctuating between 70.5°F (21.4°C) and 82.9°F (28.3°C). In Kailua-Kona, Hawaii, the average high-temperature in April is almost the same as in March - a still moderately hot 82.9°F (28.3°C). Weather in April »

Weather in May

May, the last month of the spring in Kailua-Kona, is another warm month, with temperature in the range of an average low of 71.6°F (22°C) and an average high of 83.5°F (28.6°C). The ideal ocean temperature of 77.5°F (25.3°C) and 2" (51mm) of accumulated rainfall makes May the best time for swimming and other water activities. Weather in May »

Weather in June

The first month of the summer, June, is also a moderately hot month in Kailua-Kona, Hawaii, with an average temperature fluctuating between 84.9°F (29.4°C) and 73.6°F (23.1°C). The ideal ocean temperature of 78.3°F (25.7°C) and 1" (25mm) of accumulated rainfall makes June the best time for swimming and other water activities. Weather in June »

Weather in July

July is a hot summer month in Kailua-Kona, Hawaii, with an average temperature ranging between min 74.1°F (23.4°C) and max 86°F (30°C). An excellent water temperature of 78.6°F (25.9°C) and 0.7" (18mm) of accumulated rainfall makes July a prime for swimming and other water activities. Weather in July »

Weather in August

August, the last month of the summer in Kailua-Kona, is another hot month, with an average temperature ranging between min 75°F (23.9°C) and max 86.9°F (30.5°C). The perfect water temperature of 79.5°F (26.4°C) and 1.4" (36mm) of accumulated rainfall makes August a great period for swimming and other water activities. Weather in August »

Weather in September

The first month of the autumn, September, is still a tropical month in Kailua-Kona, Hawaii, with temperature in the range of an average high of 86.7°F (30.4°C) and an average low of 74.7°F (23.7°C). The perfect water temperature of 80.1°F (26.7°C) and 0.8" (20mm) of accumulated rainfall makes September a great period for swimming and other water activities. Weather in September »

Weather in October

October, the same as September, in Kailua-Kona, Hawaii, is another hot autumn month, with temperature in the range of an average low of 74.1°F (23.4°C) and an average high of 86°F (30°C). The ideal ocean temperature of 79.5°F (26.4°C) and 1.3" (33mm) of accumulated rainfall makes October the best time for swimming and other water activities. Weather in October »

Weather in November

November, the last month of the autumn in Kailua-Kona, is another warm month, with an average temperature varying between 84.2°F (29°C) and 71.8°F (22.1°C). An excellent water temperature of 78.6°F (25.9°C) and 1.3" (33mm) of accumulated rainfall makes November a prime for swimming and other water activities. Weather in November »

Weather in December

The first month of the winter, December, is also a moderately hot month in Kailua-Kona, Hawaii, with an average temperature fluctuating between 69.4°F (20.8°C) and 82.6°F (28.1°C). The perfect water temperature of 77.4°F (25.2°C) and 2.8" (71mm) of accumulated rainfall makes December a great period for swimming and other water activities. Weather in December »
[Resources]

FAQ

How much does it rain in Kailua-Kona?

Throughout the year, in Kailua-Kona, Hawaii, 18.38" (466.9mm) of rain is accumulated.

What is the coldest month in Kailua-Kona?

The coldest month is February, with an average high-temperature of 81.1°F (27.3°C) and an average low-temperature of 68°F (20°C).

What is the month with the coldest ocean in Kailua-Kona?

The month with the coldest seawater in Kailua-Kona, Hawaii, is March, with an average ocean temperature of 75.9°F (24.4°C).

When are the longest days in Kailua-Kona?

The month with the longest days is June, with an average of 13h and 18min of daylight.

What is the driest month in Kailua-Kona?

The month with the least rainfall is July, when 0.7" (17.8mm) of precipitation is typically aggregated.

What is the warmest month in Kailua-Kona?

With an average high-temperature of 86.9°F (30.5°C) and an average low-temperature of 75°F (23.9°C), August is the warmest month.

What month is the ocean warmest in Kailua-Kona?

The month with the warmest seawater in Kailua-Kona, Hawaii, is September, with an average ocean temperature of 80.1°F (26.7°C).

What is the rainiest month in Kailua-Kona?

The month with the most rainfall in Kailua-Kona is December, when 2.82" (71.6mm) of precipitation is typically aggregated.

What is the month with the shortest days in Kailua-Kona?

The month with the shortest days in Kailua-Kona is December, with an average of 10h and 58min of daylight.

Is there Daylight Saving Time (DST) in Kailua-Kona?

Kailua-Kona does not observe Daylight Saving Time (DST). HST timezone is used over the entire year.

Average temperature
Kailua-Kona, HI

Average temperature - Kailua-Kona, HI

The warmest month (with the highest average high temperature) is August (86.9°F).
The month with the lowest average high temperature is February (81.2°F).

The month with the highest average low temperature is August (75.1°F).
The coldest month (with the lowest average low temperature) is February (68°F).

[Resources]

Average rainfall
Kailua-Kona, HI

Average rainfall - Kailua-Kona, HI

The wettest month (with the highest rainfall) is December (2.8").
The driest month (with the least rainfall) is July (0.7").

[Resources]

Average sea temperature
Kailua-Kona, HI

Average sea temperature - Kailua-Kona, HI

The best month for swimming (with the highest average sea temperature) is September (80°F).
The coldest month (with the lowest average sea temperature) is March (76°F).

[Resources]

Average daylight
Kailua-Kona, HI

Average daylight - Kailua-Kona, HI

The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 10h and 58min).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location