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
Stepping into April, Haleiwa records an average high-temperature of a still warm 76.8°F (24.9°C), almost consistent with March. In April, a low-temperature average of 71.2°F (21.8°C) is characteristic of Haleiwa, marking a minor shift from daytime temperatures.Humidity
In Haleiwa, the average relative humidity in April is 75%.Rainfall
In Haleiwa, Hawaii, in April, during 16.8 rainfall days, 0.87" (22mm) of precipitation is typically accumulated. In Haleiwa, Hawaii, during the entire year, the rain falls for 190.2 days and collects up to 11.65" (296mm) of precipitation.Ocean temperature
In Haleiwa, in April, the average water temperature is 76.6°F (24.8°C).Note: Given an individual's cold sensitivity, considering factors like sunshine, wind, and air temperature, a brief swim in 76.6°F (24.8°C) water might be pleasurable. (FYI: The standard water temperature for Olympic swimming contests is 77°F (25°C) to 82.4°F (28°C).)
Daylight
In April, the average length of the day is 12h and 40min.On the first day of April in Haleiwa, sunrise is at 6:24 am and sunset at 6:47 pm. On the last day of the month, sunrise is at 6:01 am and sunset at 6:57 pm HST.
Sunshine
The average sunshine in April in Haleiwa, Hawaii, is 7.8h.UV index
January through June, August, October through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for average individuals.Note: In April, a regular UV index of 6 translates into these guidelines:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Boost your sun resistance with garments that are densely woven yet spacious. Warning! The reflection of sand and water increases the UV dose.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in April in Haleiwa?
What is the average humidity in April in Haleiwa?
How much does it rain in Haleiwa in April?
What is the water temperature in April in Haleiwa?
What is the average length of the day in April in Haleiwa?
When are sunrise and sunset in April in Haleiwa?
How long on average sun shines in April in Haleiwa?
What is the month with the lowest UV index in Haleiwa?
What is the UV index reading in April in Haleiwa?
Average temperature in April
Haleiwa, HI
- Average high temperature in April: 76.8°F
The warmest month (with the highest average high temperature) is September (81.7°F).
The month with the lowest average high temperature is February (75°F).
- Average low temperature in April: 71.2°F
The months with the highest average low temperature are August and September (75.7°F).
The coldest month (with the lowest average low temperature) is February (68.5°F).
Average pressure in April
Haleiwa, HI
- Average pressure in April: 30.06"Hg
The month with the highest atmospheric pressure is April (30.06"Hg).
The month with the lowest atmospheric pressure is October (29.97"Hg).
Average wind speed in April
Haleiwa, HI
- Average wind speed in April: 10.9mph
The windiest month (with the highest average wind speed) is July (11.6mph).
The calmest month (with the lowest average wind speed) is January (9mph).
Average humidity in April
Haleiwa, HI
- Average humidity in April: 75%
The months with the highest relative humidity are February and December (76%).
The months with the lowest relative humidity are May and September (74%).
Average rainfall in April
Haleiwa, HI
- Average rainfall in April: 0.87"
The wettest months (with the highest rainfall) are February and October (1.34").
The driest month (with the least rainfall) is July (0.63").
Average rainfall days in April
Haleiwa, HI
- Average rainfall days in April: 16.8 days
The month with the highest number of rainy days is March (17.7 days).
The month with the least rainy days is January (12.5 days).
Average sea temperature in April
Haleiwa, HI
- Average sea temperature in April: 76.6°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 (75.2°F).
Average daylight in April /
Average sunshine in April
Haleiwa, HI
- Average daylight in April: 12h and 4min
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 48min).
- Average sunshine in April: 7h and 5min
The month with the most sunshine is June (Average sunshine: 9h and 54min).
The month with the least sunshine is November (Average sunshine: 6h and 12min).
Average sunshine days in April
Haleiwa, HI
- Average sunshine days in April: 6.8 days
The month with the most sunshine days is January (12.9 days).
The month with the least sunshine days is September (6.5 days).
Average UV index in April
Haleiwa, HI
- Average UV index in April: 6
The months with the highest UV index are July and September (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, August, October, November and December (UV index 6).
Average cloud cover in April
Haleiwa, HI
- Average cloud cover in April: 43
The month with the most cloud cover is March (Cloud cover 44).
The months with the least cloud cover are January and September (Cloud cover 37).
Average visibility in April
Haleiwa, 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).
Haleiwa, Hawaii, USA
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