Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average sea temperature in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
With May's arrival, Waipahu, Hawaii, notes an average high-temperature of a still moderately hot 78.6°F (25.9°C), closely following the trend of the preceding month. Waipahu, during May nights, experiences a subtle shift to a low average of 72.1°F (22.3°C) from the day's heat.Humidity
April through June and September, with an average relative humidity of 74%, are the least humid months.Rainfall
In Waipahu, in May, during 18.4 rainfall days, 1.46" (37mm) of precipitation is typically accumulated. In Waipahu, Hawaii, during the entire year, the rain falls for 208.4 days and collects up to 16.5" (419mm) of precipitation.Ocean temperature
In Waipahu, the average seawater temperature in May is 78.3°F (25.7°C).Note: Temperatures between 77°F (25°C) and 84.2°F (29°C) are ideal for swimming, diving, and similar water activities, ensuring pleasure and comfort for extended periods without feeling uneasy.
Daylight
In May, the average length of the day is 13h and 10min.On the first day of May, sunrise is at 6:00 am and sunset at 6:57 pm. On the last day of the month, sunrise is at 5:49 am and sunset at 7:10 pm HST.
Sunshine
In Waipahu, the average sunshine in May is 9.5h.UV index
The months with the lowest UV index are January through August, October through December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: In May, a daily maximum UV index of 6 leads to the following instructions:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Caution! The Sun's UV rays become stronger due to reflections from water and sand.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May?
What are the least humid months?
What is the average humidity in May?
How much does it rain in May?
What is the ocean temperature in May in Waipahu?
How many hours of daylight does Waipahu have in May?
When is the sunrise / sunset in May?
How long on average sun shines in May?
What are the months with the lowest UV index?
How high is the UV index in May?
Average temperature in May
Waipahu, HI
- Average high temperature in May: 78.6°F
The warmest months (with the highest average high temperature) are August and September (82°F).
The months with the lowest average high temperature are February and March (75.4°F).
- Average low temperature in May: 72.1°F
The month with the highest average low temperature is September (75°F).
The coldest month (with the lowest average low temperature) is February (68°F).
Average pressure in May
Waipahu, HI
- Average pressure in May: 30.04"Hg
The month with the highest atmospheric pressure is April (30.06"Hg).
The months with the lowest atmospheric pressure are September and October (29.97"Hg).
Average wind speed in May
Waipahu, HI
- Average wind speed in May: 9.1mph
The windiest month (with the highest average wind speed) is July (11.3mph).
The calmest month (with the lowest average wind speed) is January (8.4mph).
Average humidity in May
Waipahu, HI
- Average humidity in May: 74%
The months with the highest relative humidity are February and December (76%).
The months with the lowest relative humidity are April, May, June and September (74%).
Average rainfall in May
Waipahu, HI
- Average rainfall in May: 1.46"
The wettest month (with the highest rainfall) is October (2.09").
The driest month (with the least rainfall) is July (0.71").
Average rainfall days in May
Waipahu, HI
- Average rainfall days in May: 18.4 days
The month with the highest number of rainy days is March (20 days).
The month with the least rainy days is January (13.5 days).
Average sea temperature in May
Waipahu, HI
- Average sea temperature in May: 78.2°F
The best month for swimming (with the highest average sea temperature) is September (80.6°F).
The coldest month (with the lowest average sea temperature) is March (75.7°F).
Average daylight in May /
Average sunshine in May
Waipahu, HI
- Average daylight in May: 13h and 1min
The month with the longest days is June (Average daylight: 13h and 24min).
The month with the shortest days is December (Average daylight: 10h and 54min).
- Average sunshine in May: 9h and 3min
The month with the most sunshine is June (Average sunshine: 9h and 54min).
The months with the least sunshine are November and December (Average sunshine: 6h and 18min).
Average sunshine days in May
Waipahu, HI
- Average sunshine days in May: 8.7 days
The month with the most sunshine days is January (12.3 days).
The month with the least sunshine days is November (6.2 days).
Average UV index in May
Waipahu, HI
- Average UV index in May: 6
The month with the highest UV index is September (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, October, November and December (UV index 6).
Average cloud cover in May
Waipahu, HI
- Average cloud cover in May: 40
The month with the most cloud cover is March (Cloud cover 44).
The month with the least cloud cover is January (Cloud cover 36).
Average visibility in May
Waipahu, HI
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Waipahu, Hawaii, USA
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