Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
The transition into May marks the average high-temperature at a still pleasant 72.1°F (22.3°C), differing minimally from April's 70.9°F (21.6°C). May nights reveal a minor deviation from daytime highs, with a mean low-temperature of 66.2°F (19°C).Humidity
The months with the lowest humidity in Volcano, Hawaii, are January, May through July, with an average relative humidity of 78%.Rainfall
In Volcano, Hawaii, in May, it is raining for 20.2 days, with typically 1.38" (35mm) of accumulated precipitation. In Volcano, during the entire year, the rain falls for 227.7 days and collects up to 27.83" (707mm) of precipitation.Daylight
In May, the average length of the day is 13h and 4min.On the first day of the month, sunrise is at 5:51 am and sunset at 6:44 pm. On the last day of May, sunrise is at 5:41 am and sunset at 6:55 pm HST.
Sunshine
In May, the average sunshine in Volcano is 10.6h.UV index
The months with the highest UV index in Volcano are May 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 rays for the ordinary person.Note: In May, a regular UV index of 6 translates into these guidelines:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Volcano in May?
What is the least humid month in Volcano?
What is the average humidity in May in Volcano?
How many days does it rain in May in Volcano?
What is the average length of the day in May in Volcano?
When is the sunrise / sunset in May in Volcano?
How many hours of sunshine does Volcano have in May?
What is the month with the highest UV index in Volcano?
What is the UV index reading in May in Volcano?
Average temperature in May
Volcano, HI
- Average high temperature in May: 72.1°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 May: 66.2°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 May
Volcano, HI
- Average pressure in May: 30.04"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 May
Volcano, HI
- Average wind speed in May: 7mph
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 May
Volcano, HI
- Average humidity in May: 78%
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 May
Volcano, HI
- Average rainfall in May: 1.38"
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 May
Volcano, HI
- Average rainfall days in May: 20.2 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 May /
Average sunshine in May
Volcano, HI
- Average daylight in May: 13h and 1min
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 May: 10h and 4min
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 May
Volcano, HI
- Average sunshine days in May: 3.3 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 May
Volcano, HI
- Average UV index in May: 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 May
Volcano, HI
- Average cloud cover in May: 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 May
Volcano, HI
- Average visibility in May: 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).
Volcano, Hawaii, USA
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