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
As April takes its course, Kailua's average high-temperature registers at a still warm 76.1°F (24.5°C), closely aligning with the preceding month. Maintaining close parity with daytime warmth, the average nocturnal temperature in Kailua during April stays at an agreeable 73°F (22.8°C).Humidity
The months with the highest humidity are April, June through August and December, with an average relative humidity of 76%.Rainfall
In Kailua, during April, the rain falls for 15.8 days and regularly aggregates up to 0.98" (25mm) of precipitation. In Kailua, Hawaii, during the entire year, the rain falls for 169.9 days and collects up to 13.15" (334mm) of precipitation.Ocean temperature
In Kailua, the average seawater temperature in April is 76.8°F (24.9°C).Note: People sensitive to cold might find swimming in 76.8°F (24.9°C) challenging. However, conditions like sunshine, wind, and ambient temperature play a significant role in the overall comfort. Wetsuits, while optional, might be beneficial.
Daylight
In Kailua, the average length of the day in April is 12h and 40min.On the first day of the month, sunrise is at 6:22 am and sunset at 6:46 pm. On the last day of April, sunrise is at 5:59 am and sunset at 6:56 pm HST.
Sunshine
The average sunshine in April is 8.7h.UV index
The months with the lowest UV index in Kailua, Hawaii, are January through June, November and December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for average individuals.Note: In April, a regular UV index of 6 translates into these guidelines:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Be wary! Reflections from sand and water make UV radiation more intense.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average April temperature in Kailua?
What is the most humid month in Kailua?
What is the average humidity in April in Kailua?
How many days does it rain in April in Kailua?
What is the water temperature in April in Kailua?
What is the average length of the day in April in Kailua?
When are sunrise and sunset in April in Kailua?
How long on average sun shines in April in Kailua?
What are the months with the lowest UV index in Kailua?
How high is the UV index in April in Kailua?
Average temperature in April
Kailua, HI
- Average high temperature in April: 76.1°F
The warmest month (with the highest average high temperature) is September (80.6°F).
The month with the lowest average high temperature is February (74.5°F).
- Average low temperature in April: 73°F
The months with the highest average low temperature are September and October (77°F).
The coldest month (with the lowest average low temperature) is February (70.5°F).
Average pressure in April
Kailua, HI
- Average pressure in April: 30.06"Hg
The month with the highest atmospheric pressure is April (30.06"Hg).
The months with the lowest atmospheric pressure are September and October (29.97"Hg).
Average wind speed in April
Kailua, HI
- Average wind speed in April: 12.8mph
The windiest month (with the highest average wind speed) is July (14.1mph).
The calmest month (with the lowest average wind speed) is January (10.7mph).
Average humidity in April
Kailua, HI
- Average humidity in April: 76%
The months with the highest relative humidity are April, June, July, August and December (76%).
The months with the lowest relative humidity are January and November (74%).
Average rainfall in April
Kailua, HI
- Average rainfall in April: 0.98"
The wettest month (with the highest rainfall) is March (1.69").
The driest month (with the least rainfall) is July (0.55").
Average rainfall days in April
Kailua, HI
- Average rainfall days in April: 15.8 days
The month with the highest number of rainy days is March (16.9 days).
The month with the least rainy days is June (11.3 days).
Average sea temperature in April
Kailua, HI
- Average sea temperature in April: 76.8°F
The best month for swimming (with the highest average sea temperature) is September (80.4°F).
The coldest month (with the lowest average sea temperature) is March (75.7°F).
Average daylight in April /
Average sunshine in April
Kailua, 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 54min).
- Average sunshine in April: 8h and 4min
The month with the most sunshine is June (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days in April
Kailua, HI
- Average sunshine days in April: 7.3 days
The month with the most sunshine days is June (13.6 days).
The months with the least sunshine days are March and November (6.6 days).
Average UV index in April
Kailua, HI
- Average UV index in April: 6
The months with the highest UV index are July, August, September and October (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, November and December (UV index 6).
Average cloud cover in April
Kailua, HI
- Average cloud cover in April: 33
The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is September (Cloud cover 27).
Average visibility in April
Kailua, 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).
Kailua, Hawaii, USA
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