This report describes the typical weather at the Kadena Air Base (Okinawa, Japan) weather station over the course of an average June. It is based on the historical records from 1974 to 2012. Earlier records are either unavailable or unreliable.
Okinawa has a warm humid temperate climate with hot summers and no dry season. The area within 25 mi of this station is covered by oceans and seas (85%), croplands (8%), and forests (7%).
The month of June is characterized by rising daily high temperatures, with daily highs increasing from 82Â°F to 88Â°F over the course of the month, exceeding 91Â°F or dropping below 77Â°F only one day in ten.
Over the course of June, the length of the day is essentially constant. The shortest day of the month is June 1 with 13:41 hours of daylight; the longest day is June 21 with 13:47 hours of daylight.
The earliest sunrise is at 5:35am on June 12; the latest sunset is at 7:26pm on June 30; the latest sunrise is at 5:39am on June 30; the earliest sunset is at 7:17pm on June 1.
Daylight saving time (DST) is not observed in 2012.
The median cloud cover ranges from 74% (partly cloudy) to 84% (mostly cloudy). The trend is for the sky to be clearing with the median cloud cover decreasing by 10% from the start to the end of the month.
On June 30, the clearest day of the month, the sky is clear, mostly clear, or partly cloudy 28% of the time, and overcast or mostly cloudy 29% of the time.
On June 1, the cloudiest day of the month, the sky is overcast, mostly cloudy, or partly cloudy 47% of the time, and clear or mostly clear 12% of the time.
The probability that precipitation will be observed at this location varies throughout the month. Precipitation is most likely around June 1, occurring in 69% of days. Precipitation is least likely around June 30, occurring in 64% of days.
Throughout June, the most common forms of precipitation are moderate rain, light rain, and thunderstorms.
Moderate rain is the most severe precipitation observed during 43% of those days with precipitation. It is most likely around June 1, when it is observed during 31% of all days.
Light rain is the most severe precipitation observed during 28% of those days with precipitation. It is most likely around June 1, when it is observed during 20% of all days.
Thunderstorms are the most severe precipitation observed during 22% of those days with precipitation. They are most likely around June 30, when it is observed during 17% of all days.
Either snow is exceptionally unlikely to fall at this location in June or this station does not reliably report precipitation types.
The relative humidity typically ranges from 69% (mildly humid) to 93% (very humid) over the course of a typical June, rarely dropping below 57% (mildly humid) and reaching as high as 100% (very humid).
The air is driest around June 30, at which time the relative humidity drops below 75% (humid) three days out of four; it is most humid around June 6, rising above 90% (very 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 June, the dew point typically varies from 68Â°F (muggy) to 79Â°F (oppressive) and is rarely below 61Â°F (comfortable) or above 81Â°F (very oppressive).
Over the course of June typical wind speeds vary from 3 mph to 15 mph (light air to moderate breeze), rarely exceeding 22 mph (fresh breeze).
The highest average wind speed of 10 mph (gentle breeze) occurs around June 25, at which time the average daily maximum wind speed is 15 mph (moderate breeze).
The lowest average wind speed of 9 mph (gentle breeze) occurs around June 1, at which time the average daily maximum wind speed is 15 mph (moderate breeze).