April weather forecastPearl City, HI
April
Weather in April
With the advent of April, a slight rise in temperature can be felt. The days become slightly longer as Pearl City enjoys an average of 12.7 sunlight hours. The skyline, away from the sun, presents a dynamic spectacle as the percentage of cloud coverage hovers around 43%. The relative humidity remains fairly similar to that in previous months ensuring a comfortable climate. The rainfall lessens slightly from the previous month but still contributes to a vibrant Hawaiian bloom.Temperature
The commencement of April records an average high-temperature of a still moderately hot 76.8°F (24.9°C), barely varying from March's 75.4°F (24.1°C). Nights in April in Pearl City exhibit a minor reduction to an average low temperature of 70.7°F (21.5°C).Humidity
The months with the lowest humidity in Pearl City, Hawaii, are April through June and September, with an average relative humidity of 74%.Rainfall
In Pearl City, in April, during 18.6 rainfall days, 1.22" (31mm) of precipitation is typically accumulated. Throughout the year, there are 208.4 rainfall days, and 16.5" (419mm) of precipitation is accumulated.Ocean temperature
In Pearl City, in April, the average water temperature is 76.8°F (24.9°C).Note: When thinking about a swim in 76.8°F (24.9°C) waters, consider your cold tolerance, the day's sunshine, wind, and air temperature. It is a fun fact that Olympic swimmers dive into waters of 77°F (25°C) to 82.4°F (28°C).
Daylight
In April, the average length of the day is 12h and 40min.On the first day of the month, sunrise is at 6:23 am and sunset at 6:47 pm. On the last day of April, sunrise is at 6:00 am and sunset at 6:57 pm HST.
Sunshine
In Pearl City, the average sunshine in April is 7.8h.UV index
The months with the lowest UV index are January through August, October through December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index of 6 during April leads to these instructions:
Guard oneself from overexposure. Defence against sun injury is vital. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Pearl City, HI
- Average high temperature in April: 76.8°F
The warmest months (with the highest average high temperature) are August and September (82°F).
The months with the lowest average high temperature are February and March (75.4°F).
- Average low temperature in April: 70.7°F
The month with the highest average low temperature is September (75°F).
The coldest month (with the lowest average low temperature) is February (68°F).
Average pressure in April
Pearl City, 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
Pearl City, HI
- Average wind speed in April: 10.4mph
The windiest month (with the highest average wind speed) is July (11.3mph).
The calmest month (with the lowest average wind speed) is January (8.4mph).
Average humidity in April
Pearl City, 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, June and September (74%).
Average rainfall in April
Pearl City, HI
- Average rainfall in April: 1.22"
The wettest month (with the highest rainfall) is October (2.09").
The driest month (with the least rainfall) is July (0.71").
Average rainfall days in April
Pearl City, HI
- Average rainfall days in April: 18.6 days
The month with the highest number of rainy days is March (20 days).
The month with the least rainy days is January (13.5 days).
Average sea temperature in April
Pearl City, 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
Pearl City, HI
- Average daylight in April: 12h and 42min
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: 7h and 48min
The month with the most sunshine is June (Average sunshine: 9h and 54min).
The months with the least sunshine are November and December (Average sunshine: 6h and 18min).
Average sunshine days in April
Pearl City, HI
- Average sunshine days in April: 7.7 days
The month with the most sunshine days is January (12.3 days).
The month with the least sunshine days is November (6.2 days).
Average UV index in April
Pearl City, 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
Pearl City, HI
- Average cloud cover in April: 43
The month with the most cloud cover is March (Cloud cover 44).
The month with the least cloud cover is January (Cloud cover 36).
Average visibility in April
Pearl City, 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).
