May Weather in Waipahu, United States

Last updated: June 24, 2025

In May, the average temperature in Waipahu, United States is a pleasant 24°C (76°F). Expect minimums around 18°C (65°F) and maximums reaching up to 30°C (87°F). During the month, there's an anticipated precipitation amount of 38 mm (1.5 in) spread across 12 days, with the air being quite humid at 82%.

May Temperature in Waipahu

In May in Waipahu, the average temperature is 24°C (76°F). Maximums can reach 30°C (87°F) and minimums can be as low as 18°C (65°F). This pleasant climate makes it an ideal time for travelers to explore and enjoy outdoor activities.

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

The chart illustrates May 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, May typically has an average temperature of 24°C (76°F), with highs reaching up to 30°C (87°F) and lows dropping to around 18°C (65°F).

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

May Precipitation in Waipahu

In Waipahu in May, the precipitation amount is 38 mm (1.5 in) over the course of 12 days.

May Precipitation Trends in Waipahu

The chart displays monthly precipitation patterns in Waipahu, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Waipahu, May typically receives around 38 mm (1.5 inches) of precipitation spread over approximately 12 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

May Humidity in Waipahu

In Waipahu in May, humidity is 82%. With an average temperature of 24°C (76°F), this humidity feels like wearing a warm, damp blanket, making travel uncomfortable and sticky as you explore.

May Average Humidity in Waipahu

This chart illustrates the average monthly humidity levels in Waipahu, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Waipahu is approximately 82%, offering insight into how humid the weather typically is during this month.

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

May UV Index in Waipahu

In Waipahu in May, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Waipahu.

Maximum UV Index Levels in Waipahu for May

The chart shows the monthly maximum UV Index (UVI) for Waipahu in May, 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 May, the maximum UV index in Waipahu typically reaches 12, which falls under the extreme exposure category.

Data source: Waipahu May 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 May 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 May’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 May’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