April weather forecastVolcano, HI
April
Weather in April
April in Volcano, Hawaii witnesses the promise of the Spring season with reduced rainfall down to 1.97" (50mm). Experiencing noticeably longer hours of daylight, April marks the beginning of the dry phase of the year. The temperature highs maintain a steadiness hinting at a stable climate pattern. A slight decrease in wind speed, when compared to March, along with an increase in visibility makes for perfect outdoor activity weather. As April gently folds, the UV index remains consistent, encouraging visitors to exercise caution while bathing in the sublime tropical sun.Temperature
The advent of April in Volcano denotes an average high-temperature of a still agreeable 70.9°F (21.6°C), subtly different from March's 69.6°F (20.9°C). Volcano, during April nights, experiences a subtle shift to a low average of 64.9°F (18.3°C) from the day's heat.Humidity
In Volcano, the average relative humidity in April is 79%.Rainfall
In Volcano, in April, during 21.3 rainfall days, 1.97" (50mm) of precipitation is typically accumulated. In Volcano, during the entire year, the rain falls for 227.7 days and collects up to 27.83" (707mm) of precipitation.Daylight
In Volcano, the average length of the day in April is 12h and 36min.On the first day of April, sunrise is at 6:13 am and sunset at 6:35 pm. On the last day of the month, sunrise is at 5:52 am and sunset at 6:43 pm HST.
Sunshine
In April, the average sunshine is 8.8h.UV index
January through April, with an average maximum UV index of 5, are months with the lowest UV index in Volcano, Hawaii. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: In April, the maximum UV index of 5 transforms into these recommendations:
Take necessary precautions - Suggestions to elude sunburn are provided. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Volcano, HI
- Average high temperature in April: 70.9°F
The warmest month (with the highest average high temperature) is August (75.4°F).
The month with the lowest average high temperature is March (69.6°F).
- Average low temperature in April: 64.9°F
The month with the highest average low temperature is September (70°F).
The coldest month (with the lowest average low temperature) is March (64°F).
Average pressure in April
Volcano, HI
- Average pressure in April: 30.05"Hg
The month with the highest atmospheric pressure is April (30.05"Hg).
The months with the lowest atmospheric pressure are September and October (29.97"Hg).
Average wind speed in April
Volcano, HI
- Average wind speed in April: 7.5mph
The windiest month (with the highest average wind speed) is August (7.6mph).
The calmest month (with the lowest average wind speed) is October (6.7mph).
Average humidity in April
Volcano, HI
- Average humidity in April: 79%
The month with the highest relative humidity is March (80%).
The months with the lowest relative humidity are January, May, June and July (78%).
Average rainfall in April
Volcano, HI
- Average rainfall in April: 1.97"
The wettest month (with the highest rainfall) is February (3.78").
The driest month (with the least rainfall) is June (1.1").
Average rainfall days in April
Volcano, HI
- Average rainfall days in April: 21.3 days
The month with the highest number of rainy days is March (22.9 days).
The month with the least rainy days is January (13.3 days).
Average daylight in April /
Average sunshine in April
Volcano, HI
- Average daylight in April: 12h and 36min
The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 11h and 0min).
- Average sunshine in April: 8h and 48min
The month with the most sunshine is June (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).
Average sunshine days in April
Volcano, HI
- Average sunshine days in April: 1.9 days
The month with the most sunshine days is January (12.1 days).
The month with the least sunshine days is August (1.8 days).
Average UV index in April
Volcano, HI
- Average UV index in April: 5
The months with the highest UV index are May, June, July, August, September, October, November and December (UV index 6).
The months with the lowest UV index are January, February, March and April (UV index 5).
Average cloud cover in April
Volcano, HI
- Average cloud cover in April: 38
The month with the most cloud cover is March (Cloud cover 42).
The month with the least cloud cover is January (Cloud cover 26).
Average visibility in April
Volcano, 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).





