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
May
Weather in May
Temperature
Kapaau's average high-temperature in May sits at a still refreshing 17.9°C, showing little difference from the previous month. Kapaau's nighttime average temperature in May subtly descends to a moderate 13.3°C from the daily highs.Humidity
In May, the average relative humidity is 82%.Rainfall
In May, the rain falls for 26.5 days. Throughout May, 59mm of precipitation is accumulated. Throughout the year, there are 280.8 rainfall days, and 861mm of precipitation is accumulated.Daylight
The average length of the day in May is 13h and 6min.On the first day of May, sunrise is at 5:53 am and sunset at 6:47 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 6:59 pm HST.
Sunshine
In May, the average sunshine is 9.5h.UV index
The months with the highest UV index are May through October, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.Note: A maximum high UV index of 5 in May translates into the following recommendations:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Kapaau in May?
What is the average humidity in May?
How many days does it rain in May in Kapaau?
What is the average length of the day in May?
When are sunrise and sunset in May?
How long on average sun shines in May?
When is the highest UV index?
What is the UV index reading in May?
Average temperature in May
Kapaau, HI
- Average high temperature in May: 17.9°C
The warmest month (with the highest average high temperature) is August (19.7°C).
The month with the lowest average high temperature is March (16.6°C).
- Average low temperature in May: 13.3°C
The month with the highest average low temperature is September (15°C).
The coldest month (with the lowest average low temperature) is February (11.1°C).
Average pressure in May
Kapaau, HI
- Average pressure in May: 1017.1mbar
The month with the highest atmospheric pressure is April (1017.5mbar).
The month with the lowest atmospheric pressure is October (1014.8mbar).
Average wind speed in May
Kapaau, HI
- Average wind speed in May: 7.3km/h
The windiest month (with the highest average wind speed) is July (8.9km/h).
The calmest months (with the lowest average wind speed) are January and October (7.2km/h).
Average humidity in May
Kapaau, HI
- Average humidity in May: 82%
The months with the highest relative humidity are September and October (84%).
The month with the lowest relative humidity is February (78%).
Average rainfall in May
Kapaau, HI
- Average rainfall in May: 59mm
The wettest month (with the highest rainfall) is August (105mm).
The driest month (with the least rainfall) is June (40mm).
Average rainfall days in May
Kapaau, HI
- Average rainfall days in May: 26.5 days
The month with the highest number of rainy days is September (27.3 days).
The month with the least rainy days is January (17.1 days).
Average daylight in May /
Average sunshine in May
Kapaau, 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: 10h and 54min).
- Average sunshine in May: 9h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).
Average sunshine days in May
Kapaau, HI
- Average sunshine days in May: 3.3 days
The month with the most sunshine days is January (9.7 days).
The month with the least sunshine days is September (0.8 days).
Average UV index in May
Kapaau, HI
- Average UV index in May: 5
The months with the highest UV index are May, June, July, August, September and October (UV index 5).
The months with the lowest UV index are January, February, March, April, November and December (UV index 4).
Average cloud cover in May
Kapaau, HI
- Average cloud cover in May: 42
The months with the most cloud cover are April and September (Cloud cover 43).
The month with the least cloud cover is January (Cloud cover 29).
Average visibility in May
Kapaau, HI
- Average visibility in May: 9km
The month with the highest visibility is February (10km).
The months with the lowest visibility are January, March, April, May, June, July, August, September, October, November and December (9km).