This report describes the typical weather at the Kadena Air Base (Okinawa, Japan) weather station over the course of an average March. 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 March is characterized by gradually rising daily high temperatures, with daily highs increasing from 69Â°F to 73Â°F over the course of the month, exceeding 79Â°F or dropping below 61Â°F only one day in ten.
Over the course of March, the length of the day is gradually increasing. From the start to the end of the month, the length of the day increases by 47 minutes, implying an average day-over-day increase of 1.5 minutes.
The shortest day of the month is March 1 with 11:37 hours of daylight; the longest day is March 31 with 12:24 hours of daylight.
The earliest sunrise is at 6:21am on March 31; the latest sunset is at 6:46pm on March 31; the latest sunrise is at 6:53am on March 1; the earliest sunset is at 6:30pm on March 1.
Daylight saving time (DST) is not observed in 2012.
The median cloud cover is 85% (mostly cloudy) and does not vary substantially over the course of the month.
On March 16, a representative day, the sky is clear or mostly clear 13% of the time, partly cloudy 11% of the time, and mostly cloudy or overcast 33% of the time.
The average probability that some form of precipitation will be observed in a given day is 69%, with little variation over the course of the month.
Throughout March, the most common forms of precipitation are moderate rain, light rain, and thunderstorms.
Moderate rain is the most severe precipitation observed during 49% of those days with precipitation. It is most likely around March 1, when it is observed during 36% of all days.
Light rain is the most severe precipitation observed during 33% of those days with precipitation. It is most likely around March 3, when it is observed during 24% of all days.
Thunderstorms are the most severe precipitation observed during 10% of those days with precipitation. They are most likely around March 31, when it is observed during 9% of all days.
Either snow is exceptionally unlikely to fall at this location in March or this station does not reliably report precipitation types.
The relative humidity typically ranges from 59% (mildly humid) to 89% (very humid) over the course of a typical March, rarely dropping below 43% (comfortable) and reaching as high as 100% (very humid).
The air is driest around March 1, at which time the relative humidity drops below 68% (mildly humid) three days out of four; it is most humid around March 21, rising above 85% (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 March, the dew point typically varies from 49Â°F (dry) to 63Â°F (mildy humid) and is rarely below 37Â°F (dry) or above 72Â°F (very muggy).
The time of the month between March 1 and March 31 is the most comfortable, with dew points that are neither too dry nor too muggy.
Over the course of March 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 March 1, 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 March 21, at which time the average daily maximum wind speed is 15 mph (moderate breeze).