April weather forecastWailua, HI
April
Weather in April
April in Wailua, Hawaii, precipitates a gradual shift in weather patterns as we move further into the year. Despite the reduction of rainfall to 1.3" (33mm), wetter compared to the upcoming month of May, the climate remains conducive for a wide range of activities. Ocean temperatures provide an inviting setup for under-water sports like snorkeling, deep-sea diving, and surfing. Coupled with the exhaustive daylight hours of 12.7, the overall weather conditions amplify the island's picturesque beauty. The harmony between the warm sun, cool ocean, and moderate winds creates an enticing milieu for visitors.Temperature
Wailua, Hawaii, experiences a recorded average high-temperature of a moderately hot 74.8°F (23.8°C) in April, closely aligned with March's 73.2°F (22.9°C). Wailua notes an average temperature descent to an agreeable 70.9°F (21.6°C) in April, a small shift from its daytime peak.Humidity
In April, the average relative humidity is 76%.Rainfall
April is the month with the least rainfall. Rain falls for 18.3 days and accumulates 1.3" (33mm) of precipitation.Ocean temperature
In April, the average ocean temperature is 76.3°F (24.6°C).Note: When considering a person's aversion to cold, factors like sunshine, wind, and atmospheric temperature are key. Swimming in 76.3°F (24.6°C) might be delightful. (Remember: The Olympics' swimming events have water temperatures between 77°F (25°C) and 82.4°F (28°C).)
Daylight
In April, the average length of the day is 12h and 41min.On the first day of April, sunrise is at 6:29 am and sunset at 6:52 pm. On the last day of the month, sunrise is at 6:05 am and sunset at 7:03 pm HST.
Sunshine
The average sunshine in April is 7.8h.UV index
January through August, October through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the average person.Note: The maximum UV index of 6 during April leads to these instructions:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Take caution! The UV rays from the Sun gain strength from sand and water reflections.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Wailua, 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
Wailua, 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
Wailua, 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
Wailua, 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
Wailua, 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
Wailua, 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
Wailua, 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
Wailua, HI
- Average daylight in April: 12h and 42min
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 48min
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
Wailua, 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
Wailua, 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
Wailua, 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
Wailua, 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).
