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
April brings a marginal elevation to a still warm 76.6°F (24.8°C) from March's 75°F (23.9°C) in Honolulu's average high-temperatures. Throughout April, Honolulu's nights experience a slight temperature dip to a pleasant 71.4°F (21.9°C).Humidity
The months with the lowest humidity in Honolulu, Hawaii, are April, May, September and November, with an average relative humidity of 74%.Rainfall
In April, in Honolulu, the rain falls for 17.3 days. Throughout April, 1.02" (26mm) of precipitation is accumulated. Throughout the year, in Honolulu, 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: For those not fond of cold temperatures, taking a swim at 76.8°F (24.9°C) may require consideration of the sunshine, wind, and ambient temperature. While wetsuits are not mandatory, they can enhance the experience.
Daylight
In Honolulu, the average length of the day in April is 12h and 40min.On the first day of April in Honolulu, 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 April, the average sunshine is 8.3h.UV index
January through June, October through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: An average maximum UV index of 6 in April leads to these recommendations:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Take note! Sand and water reflections strengthen the Sun's UV exposure.
Frequently asked questions
What is the temperature in April in Honolulu?
What is the least humid month in Honolulu?
What is the average humidity in April in Honolulu?
How much does it rain in Honolulu in April?
How warm is the water in April in Honolulu?
What is the average length of the day in April in Honolulu?
When is the sunrise / sunset in April in Honolulu?
How many hours of sunshine does Honolulu have in April?
What is the month with the lowest UV index in Honolulu?
What is the UV index intensity in April in Honolulu?
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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