Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average sea temperature in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
Kapaa's average high-temperature in April is a moderately hot 74.8°F (23.8°C), indicating a subtle variation from March. A slight dip in temperature to an agreeable 70.9°F (21.6°C) marks the average nights during April.Humidity
In April, the average relative humidity in Kapaa, Hawaii, is 76%.Rainfall
The month with the least rainfall is April, when the rain falls for 18.3 days and typically collects 1.3" (33mm) of precipitation.Ocean temperature
In Kapaa, in April, the average water temperature is 76.3°F (24.6°C).Note: When thinking about a swim in 76.3°F (24.6°C) waters, consider your cold tolerance, the day's sunshine, wind, and air temperature. It is a fun fact that Olympic swimmers dive into waters of 77°F (25°C) to 82.4°F (28°C).
Daylight
The average length of the day in April is 12h and 41min.On the first day of the month, sunrise is at 6:29 am and sunset at 6:52 pm. On the last day of April, in Kapaa, sunrise is at 6:05 am and sunset at 7:03 pm HST.
Sunshine
The average sunshine in April in Kapaa is 7.8h.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 value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the average person.Note: In April, the maximum UV index of 6 transforms into these recommendations:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Caution! The Sun's UV rays become stronger due to reflections from water and sand.
Frequently asked questions
What is the usual temperature for Kapaa in April?
What is the average humidity in April in Kapaa?
What is the driest month in Kapaa?
How many days does it rain in April in Kapaa?
What is the water temperature in April in Kapaa?
How many hours of daylight does Kapaa have in April?
When is the sunrise / sunset in April in Kapaa?
How many hours of sunshine does Kapaa have in April?
What are the months with the lowest UV index in Kapaa?
What is the UV index reading in April in Kapaa?
Average temperature in April
Kapaa, HI
- Average high temperature in April: 74.8°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 April: 70.9°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 April
Kapaa, HI
- Average pressure in April: 30.07"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 April
Kapaa, HI
- Average wind speed in April: 11.5mph
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 April
Kapaa, HI
- Average humidity in April: 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 April
Kapaa, HI
- Average rainfall in April: 1.3"
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 April
Kapaa, HI
- Average rainfall days in April: 18.3 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 April
Kapaa, HI
- Average sea temperature in April: 76.2°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 April /
Average sunshine in April
Kapaa, HI
- Average daylight in April: 12h and 4min
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 April: 7h and 5min
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 April
Kapaa, HI
- Average sunshine days in April: 5.7 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 April
Kapaa, HI
- Average UV index in April: 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 April
Kapaa, HI
- Average cloud cover in April: 46
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 April
Kapaa, HI
- Average visibility in April: 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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