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
As Kapaa welcomes May, the average high-temperature is noted at a still warm 76.8°F (24.9°C), closely aligning with the preceding month. May registers an average low temperature of 72.1°F (22.3°C), subtly lower than the daytime maximum.Humidity
In May, the average relative humidity in Kapaa, Hawaii, is 76%.Rainfall
In May, the rain falls for 18.5 days. Throughout May, 1.57" (40mm) of precipitation is accumulated. Throughout the year, in Kapaa, there are 218.4 rainfall days, and 22.13" (562mm) of precipitation is accumulated.Ocean temperature
In Kapaa, the average seawater temperature in May is 77.5°F (25.3°C).Note: Water activities in temperatures ranging from 77°F (25°C) to 84.2°F (29°C) are pleasurable, without feeling uncomfortable even during extended periods.
Daylight
In May, the average length of the day in Kapaa is 13h and 13min.On the first day of the month, sunrise is at 6:04 am and sunset at 7:03 pm. On the last day of May, sunrise is at 5:53 am and sunset at 7:17 pm HST.
Sunshine
The average sunshine in May in Kapaa is 9.3h.UV index
The months with the lowest UV index in Kapaa 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 unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index of 6 during May leads to these instructions:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Note! The Sun's UV radiation gets intensified with the reflection from sand and water.
Frequently asked questions
What is the average May temperature in Kapaa?
What is the average humidity in May in Kapaa?
How much does it rain in Kapaa in May?
How warm is the water in May in Kapaa?
How many hours of daylight does Kapaa have in May?
What time are sunrise and sunset in May in Kapaa?
How many hours of sunshine does Kapaa have in May?
When is the lowest UV index in Kapaa?
What is the UV index reading in May in Kapaa?
Average temperature in May
Kapaa, HI
- Average high temperature in May: 76.8°F
The warmest month (with the highest average high temperature) is September (79.7°F).
The months with the lowest average high temperature are February and March (73.2°F).
- Average low temperature in May: 72.1°F
The month with the highest average low temperature is September (75.9°F).
The coldest month (with the lowest average low temperature) is February (68.5°F).
Average pressure in May
Kapaa, HI
- Average pressure in May: 30.05"Hg
The month with the highest atmospheric pressure is April (30.07"Hg).
The months with the lowest atmospheric pressure are September and October (29.98"Hg).
Average wind speed in May
Kapaa, HI
- Average wind speed in May: 10.5mph
The windiest month (with the highest average wind speed) is July (12.3mph).
The calmest month (with the lowest average wind speed) is January (10mph).
Average humidity in May
Kapaa, HI
- Average humidity in May: 76%
The months with the highest relative humidity are June, July, August, October and December (77%).
The month with the lowest relative humidity is January (75%).
Average rainfall in May
Kapaa, HI
- Average rainfall in May: 1.57"
The wettest month (with the highest rainfall) is March (2.52").
The driest month (with the least rainfall) is April (1.3").
Average rainfall days in May
Kapaa, HI
- Average rainfall days in May: 18.5 days
The month with the highest number of rainy days is August (21.1 days).
The month with the least rainy days is January (12.5 days).
Average sea temperature in May
Kapaa, HI
- Average sea temperature in May: 77.5°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 (74.8°F).
Average daylight in May /
Average sunshine in May
Kapaa, HI
- Average daylight in May: 13h and 1min
The month with the longest days is June (Average daylight: 13h and 30min).
The month with the shortest days is December (Average daylight: 10h and 48min).
- Average sunshine in May: 9h and 2min
The month with the most sunshine is June (Average sunshine: 9h and 42min).
The month with the least sunshine is November (Average sunshine: 6h and 12min).
Average sunshine days in May
Kapaa, HI
- Average sunshine days in May: 6.7 days
The month with the most sunshine days is January (12.8 days).
The month with the least sunshine days is August (2.9 days).
Average UV index in May
Kapaa, 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
Kapaa, HI
- Average cloud cover in May: 41
The month with the most cloud cover is March (Cloud cover 47).
The months with the least cloud cover are January and September (Cloud cover 38).
Average visibility in May
Kapaa, 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).
Kapaa, Hawaii, USA
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