This report describes the typical weather at the Kadena Air Base (Okinawa, Japan) weather station over the course of an average February. 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 February is characterized by gradually rising daily high temperatures, with daily highs around 68Â°F throughout the month, exceeding 76Â°F or dropping below 60Â°F only one day in ten.
Over the course of February, the length of the day is gradually increasing. The shortest day of the month is February 1 with 10:57 hours of daylight; the longest day is February 29 with 11:36 hours of daylight.
The earliest sunrise is at 6:53am on February 29; the latest sunset is at 6:29pm on February 29; the latest sunrise is at 7:14am on February 1; the earliest sunset is at 6:11pm on February 1.
Daylight saving time (DST) is not observed in 2012.
The median cloud cover is 88% (mostly cloudy) and does not vary substantially over the course of the month.
On February 15, a representative day, the sky is clear or mostly clear 11% of the time, partly cloudy 10% 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 70%, with little variation over the course of the month.
Throughout February, the most common forms of precipitation are moderate rain and light rain.
Moderate rain is the most severe precipitation observed during 54% of those days with precipitation. It is most likely around February 2, when it is observed during 40% of all days.
Light rain is the most severe precipitation observed during 35% of those days with precipitation. It is most likely around February 2, when it is observed during 25% of all days.
Either snow is exceptionally unlikely to fall at this location in February or this station does not reliably report precipitation types.
The relative humidity typically ranges from 57% (mildly humid) to 87% (very humid) over the course of a typical February, rarely dropping below 43% (comfortable) and reaching as high as 99% (very humid).
The air is driest around February 1, at which time the relative humidity drops below 66% (mildly humid) three days out of four; it is most humid around February 16, rising above 81% (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 February, the dew point typically varies from 46Â°F (dry) to 58Â°F (comfortable) and is rarely below 37Â°F (dry) or above 68Â°F (muggy).
The time of the month between February 1 and February 29 is the most comfortable, with dew points that are neither too dry nor too muggy.
Over the course of February typical wind speeds vary from 3 mph to 16 mph (light air to moderate breeze), rarely exceeding 22 mph (fresh breeze).
The highest average wind speed of 10 mph (gentle breeze) occurs around February 24, at which time the average daily maximum wind speed is 16 mph (moderate breeze).
The lowest average wind speed of 10 mph (gentle breeze) occurs around February 13, at which time the average daily maximum wind speed is 15 mph (moderate breeze).