This report describes the typical weather at the Kona International Airport (Kailua-Kona, Hawaii, United States) weather station over the course of an average May. It is based on the historical records from 1985 to 2012. Earlier records are either unavailable or unreliable.
Kailua-Kona, Hawaii has a tropical savanna climate with dry winters. The area within 25 mi of this station is covered by oceans and seas (100%).
The month of May is characterized by essentially constant daily high temperatures, with daily highs around 83°F throughout the month, exceeding 85°F or dropping below 80°F only one day in ten.
Over the course of May, the length of the day is essentially constant. The shortest day of the month is May 1 with 12:53 hours of daylight; the longest day is May 31 with 13:15 hours of daylight.
The earliest sunrise is at 5:45am on May 31; the latest sunset is at 6:59pm on May 31; the latest sunrise is at 5:55am on May 1; the earliest sunset is at 6:48pm on May 2.
Daylight savings time (DST) is not observed in 2012.
The median cloud cover is 51% (partly cloudy) and does not vary substantially over the course of the month.
On May 16, a representative day, the sky is clear or mostly clear 39% of the time, partly cloudy 12% of the time, and mostly cloudy or overcast 35% of the time.
The average probability that some form of precipitation will be observed in a given day is 19%, with little variation over the course of the month.
Throughout May, the most common forms of precipitation are light rain and moderate rain.
Light rain is the most severe precipitation observed during 72% of those days with precipitation. It is most likely around May 29, when it is observed during 15% of all days.
Moderate rain is the most severe precipitation observed during 15% of those days with precipitation. It is most likely around May 10, when it is observed during 3% of all days.
Either snow is exceptionally unlikely to fall at this location in May or this station does not reliably report precipitation types.
The relative humidity typically ranges from 66% (mildly humid) to 84% (humid) over the course of a typical May, rarely dropping below 50% (comfortable) and reaching as high as 100% (very humid).
The air is driest around May 4, at which time the relative humidity drops below 67% (mildly humid) three days out of four; it is most humid around May 15, rising above 76% (humid) three days out of four.
Dew point is often a better measure of how comfortable a person will find the weather than relative humidity because it more directly relates to whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid.
Over the course of a typical May, the dew point typically varies from 61°F (comfortable) to 69°F (muggy) and is rarely below 56°F (comfortable) or above 72°F (very muggy).
Over the course of May typical wind speeds vary from 3 mph to 14 mph (light air to moderate breeze), rarely exceeding 18 mph (fresh breeze).
The highest average wind speed of 9 mph (gentle breeze) occurs around May 4, at which time the average daily maximum wind speed is 14 mph (moderate breeze).
The lowest average wind speed of 8 mph (gentle breeze) occurs around May 29, at which time the average daily maximum wind speed is 14 mph (moderate breeze).