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
The initiation of April sees an average high-temperature of a still warm 76.6°F (24.8°C), showing minor variations from the previous month. Honolulu, during April nights, observes a steady temperature, averaging at an agreeable 71.4°F (21.9°C).Humidity
The months with the lowest humidity are April, May, September and November, with an average relative humidity of 74%.Rainfall
In Honolulu, in April, it is raining for 17.3 days, with typically 1.02" (26mm) of accumulated precipitation. Throughout the year, there are 197.2 rainfall days, and 14.61" (371mm) of precipitation is accumulated.Ocean temperature
In Honolulu, in April, the average water temperature is 76.8°F (24.9°C).Note: Factor in your tolerance to cold, the sunshine, the wind, and the air's warmth, and a swim in 76.8°F (24.9°C) might be tempting. It is interesting to note that Olympians compete in 77°F (25°C) to 82.4°F (28°C) water temperatures.
Daylight
In April, the average length of the day is 12h and 40min.On the first day of April, sunrise is at 6:23 am and sunset at 6:46 pm. On the last day of the month, sunrise is at 6:00 am and sunset at 6:56 pm HST.
Sunshine
In Honolulu, the average sunshine in April is 8.3h.UV index
The months with the lowest UV index are January through June, October through December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 6 during April translates into the following guidance:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Heads up! The reflection of sand and water notably intensifies UV rays from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Honolulu in April?
What are the least humid months?
What is the average humidity in April?
How much does it rain in April?
What is the ocean temperature in April?
What is the average length of the day in April?
When is the sunrise / sunset in April?
How many hours of sunshine does Honolulu have in April?
What is the month with the lowest UV index?
What is the UV index intensity in April?
Average temperature in April
Honolulu, HI
- Average high temperature in April: 76.6°F
The warmest month (with the highest average high temperature) is September (81.5°F).
The months with the lowest average high temperature are February and March (75°F).
- Average low temperature in April: 71.4°F
The month with the highest average low temperature is August (75.7°F).
The coldest month (with the lowest average low temperature) is February (69.1°F).
Average pressure in April
Honolulu, 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
Honolulu, HI
- Average wind speed in April: 11mph
The windiest month (with the highest average wind speed) is July (12.1mph).
The calmest month (with the lowest average wind speed) is January (9mph).
Average humidity in April
Honolulu, HI
- Average humidity in April: 74%
The months with the highest relative humidity are February and December (76%).
The months with the lowest relative humidity are April, May, September and November (74%).
Average rainfall in April
Honolulu, HI
- Average rainfall in April: 1.02"
The wettest months (with the highest rainfall) are March and October (1.81").
The driest month (with the least rainfall) is July (0.67").
Average rainfall days in April
Honolulu, HI
- Average rainfall days in April: 17.3 days
The months with the highest number of rainy days are March and October (18 days).
The month with the least rainy days is January (12.6 days).
Average sea temperature in April
Honolulu, 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
Honolulu, 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 2min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The months with the least sunshine are November and December (Average sunshine: 6h and 30min).
Average sunshine days in April
Honolulu, HI
- Average sunshine days in April: 8.3 days
The month with the most sunshine days is January (12.8 days).
The month with the least sunshine days is October (6.3 days).
Average UV index in April
Honolulu, HI
- Average UV index in April: 6
The months with the highest UV index are July, August and September (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, October, November and December (UV index 6).
Average cloud cover in April
Honolulu, HI
- Average cloud cover in April: 38
The month with the most cloud cover is March (Cloud cover 40).
The months with the least cloud cover are January and September (Cloud cover 33).
Average visibility in April
Honolulu, 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).
Honolulu, Hawaii, USA
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