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December Weather in Kapaau, United States

Last updated: June 24, 2025

In December, the average temperature in Kapaau, United States is a comfortable 23°C (73°F), with lows dipping to 19°C (66°F) and highs reaching up to 27°C (80°F). Expect about 79 mm (3.1 in) of precipitation spread over 9 days, contributing to an average humidity level of 81%. This blend of warmth and moisture makes for a refreshing, yet lively atmosphere.

December Temperature in Kapaau

In December in Kapaau, the average temperature is 23°C (73°F), with maximums reaching 27°C (80°F) and minimums dropping as low as 19°C (66°F). This pleasant climate makes it an ideal time for travelers to explore and enjoy outdoor activities.

December Weather in Kapaau: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Kapaau, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kapaau, December typically has an average temperature of 23°C (73°F), with highs reaching up to 27°C (80°F) and lows dropping to around 19°C (66°F).
JanFebMarAprMayJunJulAugSepOctNovDec727172737476777777767573
Data source: Temperature data for Kapaau generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Kapaau

In Kapaau in December, the precipitation amount is 79 mm (3.1 in) spread over 9 days.

December Precipitation Trends in Kapaau

The chart displays monthly precipitation patterns in Kapaau, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Kapaau, December typically receives around 79 mm (3.1 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec38765044377194317473279
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Kapaau

In Kapaau in December, humidity is 81%. With an average temperature of 23°C (73°F), this humidity feels like a heavy blanket wrapping around you, making every step feel more laborious while traveling and causing you to constantly seek out shade or a cool breeze for relief.

December Average Humidity in Kapaau

This chart illustrates the average monthly humidity levels in Kapaau, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Kapaau is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%79%79%82%83%84%85%85%84%83%82%81%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Kapaau

In Kapaau in December, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Kapaau.

Maximum UV Index Levels in Kapaau for December

The chart shows the monthly maximum UV Index (UVI) for Kapaau in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In December, the maximum UV index in Kapaau typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec810111212131313121198
Data source: Kapaau December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How December Weather in Kapaau Compares to Other Months

Weather in Kapaau varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Kapaau, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Kapaau, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather22°C (72°F)38 mm (1.5 inches)78%very high
February Weather22°C (71°F)76 mm (3.0 inches)79%very high
March Weather22°C (72°F)50 mm (2.0 inches)79%extreme
April Weather23°C (73°F)44 mm (1.7 inches)82%extreme
May Weather23°C (74°F)37 mm (1.5 inches)83%extreme
June Weather24°C (76°F)7 mm (0.3 inches)84%extreme
July Weather25°C (77°F)19 mm (0.7 inches)85%extreme
August Weather25°C (77°F)43 mm (1.7 inches)85%extreme
September Weather25°C (77°F)17 mm (0.7 inches)84%extreme
October Weather25°C (77°F)47 mm (1.9 inches)83%extreme
November Weather24°C (75°F)32 mm (1.2 inches)82%very high
December Weather23°C (73°F)79 mm (3.1 inches)81%very high

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