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
Waialua's average high-temperature in April is a still warm 76.8°F (24.9°C), marking an insignificant difference from the 75.2°F (24°C) of March. During the nights of April, Waialua maintains an almost steady temperature with an average low of 71.2°F (21.8°C).Humidity
In Waialua, the average relative humidity in April is 75%.Rainfall
In April, the rain falls for 16.8 days. Throughout April, 0.87" (22mm) of precipitation is accumulated. Throughout the year, there are 190.2 rainfall days, and 11.65" (296mm) of precipitation is accumulated.Ocean temperature
In Waialua, the average seawater temperature in April is 76.6°F (24.8°C).Note: Taking into account a person's sensitivity to the cold, given sunshine, wind, and air temperature, swimming in 76.6°F (24.8°C) might be pleasant. (FYI: The water temperature set for the Olympic swimming event is between 77°F (25°C) and 82.4°F (28°C).)
Daylight
In April, the average length of the day is 12h and 40min.On the first day of April, 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 6:58 pm HST.
Sunshine
The average sunshine in April in Waialua 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 value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In April, the maximum UV index of 6 translates into these guidelines:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Heads up! Sand and water reflection magnifies the UV exposure from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in April?
What is the average humidity in April in Waialua?
How much does it rain in April?
How warm is the water in April?
What is the average length of the day in April?
What time are sunrise and sunset in April?
How long on average sun shines in April?
When is the lowest UV index?
What is the UV index reading in April?
Average temperature in April
Waialua, 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
Waialua, 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
Waialua, 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
Waialua, 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
Waialua, 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
Waialua, 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
Waialua, 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
Waialua, 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
Waialua, 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
Waialua, 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
Waialua, 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
Waialua, 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).
Waialua, Hawaii, USA
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