December Weather in Waipahu, United States

Last updated: June 24, 2025

In December, the average temperature in Waipahu, United States hovers around 23°C (74°F), with a comfortable minimum of 16°C (61°F) and a warm maximum reaching 28°C (83°F). Expect 79 mm (3.1 in) of precipitation spread over 12 days, and enjoy the refreshing average humidity of 79%. It’s a perfect time to experience the blend of warmth and mild weather!

December Temperature in Waipahu

In December in Waipahu, the average temperature is 23°C (74°F). Maximums can reach 28°C (83°F), while minimums can dip as low as 16°C (61°F). This mild and pleasant weather makes Waipahu an ideal destination for travelers looking to enjoy outdoor activities and explore the local scenery.

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

The chart illustrates December temperature patterns in Waipahu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Waipahu, December typically has an average temperature of 23°C (74°F), with highs reaching up to 28°C (83°F) and lows dropping to around 16°C (61°F).

Data source: Temperature data for Waipahu generated using information from the Copernicus Climate Change Service.

December Precipitation in Waipahu

In Waipahu in December, the precipitation amount is 79 mm (3.1 in) over a period of 12 days.

December Precipitation Trends in Waipahu

The chart displays monthly precipitation patterns in Waipahu, 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 Waipahu, December typically receives around 79 mm (3.1 inches) of precipitation spread over approximately 12 days.

Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

December Humidity in Waipahu

In Waipahu in December, humidity is 79%. With an average temperature of 23°C (74°F), this humidity feels like a warm, enveloping blanket that can make outdoor activities a bit less comfortable, urging travelers to seek shade and hydration throughout the day.

December Average Humidity in Waipahu

This chart illustrates the average monthly humidity levels in Waipahu, 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 Waipahu is approximately 79%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Waipahu

In Waipahu in December, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Waipahu.

Maximum UV Index Levels in Waipahu for December

The chart shows the monthly maximum UV Index (UVI) for Waipahu 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 Waipahu typically reaches 7, which falls under the high exposure category.

Data source: Waipahu 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 Waipahu Compares to Other Months

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

This table compares monthly weather conditions in Waipahu, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	23°C (73°F)	22 mm (0.9 inches)	78%	very high
February Weather	22°C (72°F)	76 mm (3.0 inches)	79%	very high
March Weather	22°C (73°F)	77 mm (3.0 inches)	78%	extreme
April Weather	23°C (74°F)	39 mm (1.5 inches)	81%	extreme
May Weather	24°C (76°F)	38 mm (1.5 inches)	82%	extreme
June Weather	25°C (78°F)	51 mm (2.0 inches)	82%	extreme
July Weather	26°C (79°F)	28 mm (1.1 inches)	83%	extreme
August Weather	26°C (80°F)	27 mm (1.0 inches)	83%	extreme
September Weather	26°C (80°F)	26 mm (1.0 inches)	82%	extreme
October Weather	26°C (78°F)	57 mm (2.2 inches)	81%	extreme
November Weather	24°C (76°F)	32 mm (1.3 inches)	80%	very high
December Weather	23°C (74°F)	79 mm (3.1 inches)	79%	high