August weather forecastVolcano, HI
August
Weather in August
In August, the effects of the ongoing summer are apparent as rainfall peaks at 2.52" (64mm). Cloud cover registers a minor increase pairing harmoniously with the temperature highs that persist throughout this month. The tropical atmosphere of Volcano, Hawaii is kept comfortable by the constant wind speeds ensuring an even distribution of warmth. Pressure decreases slightly, and wind speed increases, adding a certain freshness to the ambiance. With a steady UV Index consistent with the summer months, it is advisable to maintain the use of sun protection and hydration routines.Temperature
August, known for its average high temperature of 75.4°F (24.1°C) and an average low temperature of 68.9°F (20.5°C), is the warmest month in Volcano.Humidity
The average relative humidity in August in Volcano is 79%.Rainfall
In August, the rain falls for 19.5 days. Throughout August, 2.52" (64mm) of precipitation is accumulated. Throughout the year, there are 227.7 rainfall days, and 27.83" (707mm) of precipitation is accumulated.Daylight
In August, the average length of the day is 12h and 46min.On the first day of the month, sunrise is at 5:57 am and sunset at 6:56 pm. On the last day of August, in Volcano, sunrise is at 6:05 am and sunset at 6:36 pm HST.
Sunshine
In Volcano, the average sunshine in August is 9h.UV index
May through December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In August, an average UV index of 6 transforms into the following instructions:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Volcano, HI
- Average high temperature in August: 75.4°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 August: 68.9°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 August
Volcano, HI
- Average pressure in August: 29.98"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 August
Volcano, HI
- Average wind speed in August: 7.6mph
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 August
Volcano, HI
- Average humidity in August: 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 August
Volcano, HI
- Average rainfall in August: 2.52"
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 August
Volcano, HI
- Average rainfall days in August: 19.5 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 August /
Average sunshine in August
Volcano, HI
- Average daylight in August: 12h and 48min
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 August: 9h and 0min
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 August
Volcano, HI
- Average sunshine days in August: 1.8 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 August
Volcano, HI
- Average UV index in August: 6
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 August
Volcano, HI
- Average cloud cover in August: 33
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 August
Volcano, HI
- Average visibility in August: 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).





