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Kailua-Kona (HI) Weather and Climate: A Comprehensive Guide

Kailua-Kona has a steady warm climate throughout the year. It is also known for its large amounts of rainfall. Now, let’s explore all the climate details to give you a full picture.

Average maximum day and minimum night temperature

With minimal seasonal shifts, Kailua-Kona experiences a constant climate year-round. Typically, average maximum daytime temperatures range from a comfortable 26°C in August to a comfortable 23°C in the coolest month, February.

Nights are cooler, with lows often dropping to around 19°C during the colder months. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

Kailua-Kona has a notably wet climate with abundant precipitation, recording 3314 mm of rainfall per year. The climate in Kailua-Kona shows significant variation throughout the year. Expect heavy rainfall in July, with an average of 432 mm of precipitation over 19 rainy days.

In contrast, January offers drier and sunnier days, with around 137 mm of rainfall over 15 rainy days. For more details, please visit our Kailua-Kona Precipitation page.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

Kailua-Kona offers a pleasant mix of sunny and slightly overcast days. The difference in sunshine hours between June (9.7 hours daily) and February (6.8 hours daily) provides a bit of variety for visitors and residents. Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Forecast for Kailua-Kona (HI)

Sun   Dec 22
28°C | 22°C
N 6 m/s
almost clear and no rain

almost clear and no rain

Mon   Dec 23
28°C | 21°C
W 5 m/s
partly cloudy and no rain

partly cloudy and no rain

Tue   Dec 24
28°C | 21°C
W 5 m/s
0.3 mm
partly cloudy and small chance of slight rain

partly cloudy and small chance of slight rain

The best time of year to visit Kailua-Kona in the United States of America

The average rainfall figures in Kailua-Kona are quite high. Throughout the year, you have a chance of prolonged precipitation. So no matter what time of year you go, you will always have to deal with a high number of rainy days. This makes it more challenging to point out the best time of year to visit. If we needed to pick one month we would choose July which is the sunniest month of the year.

Other facts from our historical weather data:
  • Which is the warmest month in Kailua-Kona?
    August has an average maximum temperature of 26°C and is the warmest month of the year.
  • Which is the coldest month in Kailua-Kona?
    The coldest month is February with an average maximum temperature of 23°C.
  • Which is the wettest month in Kailua-Kona?
    July tops the wettest month list with 432 mm of rainfall.
  • Which is the driest month in Kailua-Kona?
    January is the driest month with 137 mm of precipitation.
  • Which is the sunniest month in Kailua-Kona?
    July is the sunniest month with an average of 290 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.