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
Entering May, Waimalu's average high-temperature reads a still warm 78.6°F (25.9°C), indicating a close resemblance to the previous month's climate. During May, Waimalu's nights hold steady with an average temperature of 72.1°F (22.3°C), barely dropping from the daytime highs.Humidity
The months with the lowest humidity are April through June and September, with an average relative humidity of 74%.Rainfall
In May, the rain falls for 18.4 days. Throughout May, 1.46" (37mm) of precipitation is accumulated. Throughout the year, there are 208.4 rainfall days, and 16.5" (419mm) of precipitation is accumulated.Ocean temperature
In May, the average ocean temperature is 77°F (25°C).Note: Swimming, diving, and other water endeavors at temperatures between 77°F (25°C) and 84.2°F (29°C) are considered enjoyable and satisfying for extended periods without discomfort.
Daylight
In May, the average length of the day is 13h and 10min.On the first day of the month, sunrise is at 6:00 am and sunset at 6:57 pm. On the last day of May, sunrise is at 5:49 am and sunset at 7:10 pm HST.
Sunshine
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 threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: In May, a regular UV index of 6 translates into these guidelines:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Watch out! Reflections from sand and water can surge UV radiation exposure.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May?
What is the least humid month?
What is the average humidity in May?
How many days does it rain in May?
What is the water temperature in May?
How many hours of daylight does Waimalu have in May?
What time are sunrise and sunset in May?
How long on average sun shines in May?
When is the lowest UV index?
What is the UV index reading in May?
Average temperature in May
Waimalu, 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
Waimalu, 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
Waimalu, 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
Waimalu, 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
Waimalu, 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
Waimalu, 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
Waimalu, HI
- Average sea temperature in May: 77°F
The best months for swimming (with the highest average sea temperature) are August, September and October (81°F).
The coldest months (with the lowest average sea temperature) are January, February, March and April (75°F).
Average daylight in May /
Average sunshine in May
Waimalu, 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
Waimalu, 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
Waimalu, 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
Waimalu, 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
Waimalu, 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).
Waimalu, Hawaii, USA
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