Kapolei, Hawaii 

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Climate in Kapolei, Hawaii

Kapolei, Hawaii gets 17 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Kapolei averages 0 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 271 sunny days per year in Kapolei. The US average is 205 sunny days.

Kapolei gets some kind of precipitation, on average, 74 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.

Weather Highlights

Summer High: the July high is around 88 degrees
Winter Low: the January low is 65
Rain: averages 17 inches of rain a year
Snow: averages 0 inches of snow a year


The annual BestPlaces Comfort Index for Kapolei is 8.8 (10=best), which means it is more comfortable than most places in Hawaii.

8.3 / 9.1

Summer   /   Winter
March, February and January are the most pleasant months in Kapolei, while August and July are the least comfortable months.

Climate Averages
  Kapolei, HawaiiUnited States
  17.3 in.38.1 in.
  0.0 in.27.8 in.
  74.4 days106.2 days
  271 days205 days
  62 ft.2443 ft.


Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

August is the hottest month for Kapolei with an average high temperature of 88.2°, which ranks it as one of the hottest places in Hawaii. In Kapolei, there are 7 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Kapolei are February, January and March.

In Kapolei, there are 29.6 days annually when the high temperature is over 90°, which is one of the hottest places in Hawaii.

February has the coldest nighttime temperatures for Kapolei with an average of 64.4°. This is warmer than most places in Hawaii.

In Kapolei, there are 0.0 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in Hawaii.

In Kapolei, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Hawaii.

Despite the high humidity in Kapolei, the trade winds keep it pleasant. If the trade winds stop blowing (which is rare), a summer day can be unpleasantly humid. The most humid months in Kapolei are October and September.

December is the wettest month in Kapolei with 3.2 inches of rain, and the driest month is June with 0.4 inches. The wettest season is Spring with 43% of yearly precipitation and 9% occurs in Autumn, which is the driest season. The annual rainfall of 17.3 inches in Kapolei means that it is drier than most places in Hawaii.

December is the rainiest month in Kapolei with 8.4 days of rain, and June is the driest month with only 4.0 rainy days. There are 74.4 rainy days annually in Kapolei, which is less rainy than most places in Hawaii. The rainiest season is Spring when it rains 32% of the time and the driest is Autumn with only a 17% chance of a rainy day.

There is rarely any recorded snowfall in Kapolei, ranking it as one of the least snowy places in Hawaii. Any measurable snowfall is a rare occurance in Kapolei.

  • Annual Rainfall (US Avg: 36.5")
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    Reviews for Kapolei    1 Reviews
    Rainfall - 9/16/2016
    Kapolei is located on the dry side of the Hawaiian island of Oahu. It is the dry/sunny side of the island with very little rainfall. Kapolei has had an average... Read More

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