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
The initiation of May records an average high-temperature of a still warm 78.6°F (25.9°C), displaying a near consistency with the previous month. In May, Waialua experiences a marginal drop in temperature, with averages of 72.9°F (22.7°C) at night.Humidity
May and September, with an average relative humidity of 74%, are the least humid months in Waialua, Hawaii.Rainfall
In May, the rain falls for 17.2 days. Throughout May, 1.02" (26mm) of precipitation is accumulated. In Waialua, during the entire year, the rain falls for 190.2 days and collects up to 11.65" (296mm) of precipitation.Ocean temperature
In May, the average ocean temperature is 77.7°F (25.4°C).Note: In water activities such as swimming and diving, temperatures from 77°F (25°C) to 84.2°F (29°C) are deemed highly pleasurable for extended periods without any unease.
Daylight
In May, the average length of the day is 13h and 11min.On the first day of May, sunrise is at 6:00 am and sunset at 6:58 pm. On the last day of the month, sunrise is at 5:49 am and sunset at 7:11 pm HST.
Sunshine
The average sunshine in May is 9.7h.UV index
The months with the lowest UV index are January through June, August, October through December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index of 6 during May leads to these instructions:
Shun overexposure. Protection from sun ravages is indispensable. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Be careful! The Sun's UV radiation is accentuated by reflecting off sand and water.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Waialua in May?
What is the least humid month?
What is the average humidity in May in Waialua?
How many days does it rain in May?
What is the water temperature in May?
What is the average length of the day in May in Waialua?
When is the sunrise / sunset in May?
How long on average sun shines in May in Waialua?
When is the lowest UV index?
What is the UV index reading in May?
Average temperature in May
Waialua, HI
- Average high temperature in May: 78.6°F
The warmest month (with the highest average high temperature) is September (81.7°F).
The month with the lowest average high temperature is February (75°F).
- Average low temperature in May: 72.9°F
The months with the highest average low temperature are August and September (75.7°F).
The coldest month (with the lowest average low temperature) is February (68.5°F).
Average pressure in May
Waialua, HI
- Average pressure in May: 30.04"Hg
The month with the highest atmospheric pressure is April (30.06"Hg).
The month with the lowest atmospheric pressure is October (29.97"Hg).
Average wind speed in May
Waialua, HI
- Average wind speed in May: 9.7mph
The windiest month (with the highest average wind speed) is July (11.6mph).
The calmest month (with the lowest average wind speed) is January (9mph).
Average humidity in May
Waialua, 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 May and September (74%).
Average rainfall in May
Waialua, HI
- Average rainfall in May: 1.02"
The wettest months (with the highest rainfall) are February and October (1.34").
The driest month (with the least rainfall) is July (0.63").
Average rainfall days in May
Waialua, HI
- Average rainfall days in May: 17.2 days
The month with the highest number of rainy days is March (17.7 days).
The month with the least rainy days is January (12.5 days).
Average sea temperature in May
Waialua, HI
- Average sea temperature in May: 77.7°F
The best month for swimming (with the highest average sea temperature) is September (80.2°F).
The coldest month (with the lowest average sea temperature) is March (75.2°F).
Average daylight in May /
Average sunshine in May
Waialua, 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 48min).
- Average sunshine in May: 9h and 4min
The month with the most sunshine is June (Average sunshine: 9h and 54min).
The month with the least sunshine is November (Average sunshine: 6h and 12min).
Average sunshine days in May
Waialua, HI
- Average sunshine days in May: 8.5 days
The month with the most sunshine days is January (12.9 days).
The month with the least sunshine days is September (6.5 days).
Average UV index in May
Waialua, HI
- Average UV index in May: 6
The months with the highest UV index are July and September (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, August, October, November and December (UV index 6).
Average cloud cover in May
Waialua, HI
- Average cloud cover in May: 39
The month with the most cloud cover is March (Cloud cover 44).
The months with the least cloud cover are January and September (Cloud cover 37).
Average visibility in May
Waialua, 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).
Waialua, Hawaii, USA
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