April weather forecastPoipu, HI
April
Weather in April
Coming into April, the rainfall volume begins to withdraw, paving the way for more sunshine hours during the day. The relaxed climatic variance from the previous month makes it a favourable time for beach and coastal activities. The near-perfect visibility, coupled with gentle winds, complements the holiday-like weather in this Hawaiian city. There is a slight drop in cloud coverage, allowing more sunlight to seep through while the humidity remains relatively stable. On an exceptional note, rainfall falls to 1.3" (33mm), the lowest for a six-month duration up to September.Temperature
As March transitions into April, Poipu records an average high-temperature of a moderately hot 74.8°F (23.8°C), showing a gentle shift from the preceding month. Poipu's April nights observe a minor shift from the daytime temperatures, resulting in an average dip to a pleasant 70.9°F (21.6°C).Humidity
In Poipu, the average relative humidity in April is 76%.Rainfall
The month with the least rainfall is April, when the rain falls for 18.3 days and typically collects 1.3" (33mm) of precipitation.Daylight
The average length of the day in April in Poipu is 12h and 40min.On the first day of April in Poipu, sunrise is at 6:29 am and sunset at 6:53 pm. On the last day of the month, sunrise is at 6:06 am and sunset at 7:03 pm HST.
Sunshine
In Poipu, the average sunshine in April is 7.8h.UV index
The months with the lowest UV index in Poipu are January through August, October through December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index of 6 during April leads to these instructions:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Poipu, 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
Poipu, 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
Poipu, 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
Poipu, 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
Poipu, 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
Poipu, 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 daylight in April /
Average sunshine in April
Poipu, 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 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
Poipu, 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
Poipu, 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
Poipu, 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
Poipu, 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).
