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 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
Hakalau experiences a minor change to a still agreeable 72.1°F (22.3°C) in average high-temperature during May, closely reflecting April. Throughout May, Hakalau's nights experience a slight temperature dip to a refreshing 66.2°F (19°C).Humidity
January, May through July, with an average relative humidity of 78%, are the least humid months.Rainfall
In Hakalau, during May, the rain falls for 20.2 days and regularly aggregates up to 1.38" (35mm) of precipitation. In Hakalau, during the entire year, the rain falls for 227.7 days and collects up to 27.83" (707mm) of precipitation.Daylight
In May, the average length of the day is 13h and 5min.On the first day of May, sunrise is at 5:50 am and sunset at 6:44 pm. On the last day of the month, sunrise is at 5:40 am and sunset at 6:56 pm HST.
Sunshine
The average sunshine in May is 10.6h.UV index
The months with the highest UV index are May through December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.Note: The UV index of 6 during May leads to these advisories:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures?
What are the least humid months?
What is the average humidity in May?
How many days does it rain in May in Hakalau?
How many hours of daylight does Hakalau have in May?
When are sunrise and sunset in May in Hakalau?
How many hours of sunshine does Hakalau have in May?
When is the highest UV index?
How high is the UV index in May?
Average temperature in May
Hakalau, HI
- Average high temperature in May: 72.1°F
The warmest month (with the highest average high temperature) is August (75.4°F).
The month with the lowest average high temperature is March (69.6°F).
- Average low temperature in May: 66.2°F
The month with the highest average low temperature is September (70°F).
The coldest month (with the lowest average low temperature) is March (64°F).
Average pressure in May
Hakalau, HI
- Average pressure in May: 30.04"Hg
The month with the highest atmospheric pressure is April (30.05"Hg).
The months with the lowest atmospheric pressure are September and October (29.97"Hg).
Average wind speed in May
Hakalau, HI
- Average wind speed in May: 7mph
The windiest month (with the highest average wind speed) is August (7.6mph).
The calmest month (with the lowest average wind speed) is October (6.7mph).
Average humidity in May
Hakalau, HI
- Average humidity in May: 78%
The month with the highest relative humidity is March (80%).
The months with the lowest relative humidity are January, May, June and July (78%).
Average rainfall in May
Hakalau, HI
- Average rainfall in May: 1.38"
The wettest month (with the highest rainfall) is February (3.78").
The driest month (with the least rainfall) is June (1.1").
Average rainfall days in May
Hakalau, HI
- Average rainfall days in May: 20.2 days
The month with the highest number of rainy days is March (22.9 days).
The month with the least rainy days is January (13.3 days).
Average daylight in May /
Average sunshine in May
Hakalau, HI
- Average daylight in May: 13h and 1min
The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 11h and 0min).
- Average sunshine in May: 10h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).
Average sunshine days in May
Hakalau, HI
- Average sunshine days in May: 3.3 days
The month with the most sunshine days is January (12.1 days).
The month with the least sunshine days is August (1.8 days).
Average UV index in May
Hakalau, HI
- Average UV index in May: 6
The months with the highest UV index are May, June, July, August, September, October, November and December (UV index 6).
The months with the lowest UV index are January, February, March and April (UV index 5).
Average cloud cover in May
Hakalau, HI
- Average cloud cover in May: 33
The month with the most cloud cover is March (Cloud cover 42).
The month with the least cloud cover is January (Cloud cover 26).
Average visibility in May
Hakalau, 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).
Hakalau, Hawaii, USA
Weather forecast for your location
2. Allow the app to use your location