This report describes the typical weather at the Naha Airport (Naha, Japan) weather station over the course of an average year. It is based on the historical records from 1974 to 2012. Earlier records are either unavailable or unreliable.
Naha 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 (91%) and croplands (8%).
Over the course of a year, the temperature typically varies from 59Â°F to 88Â°F and is rarely below 54Â°F or above 91Â°F.
The warm season lasts from June 14 to October 5 with an average daily high temperature above 84Â°F. The hottest day of the year is July 24, with an average high of 88Â°F and low of 81Â°F.
The cold season lasts from December 14 to March 17 with an average daily high temperature below 71Â°F. The coldest day of the year is February 1, with an average low of 59Â°F and high of 66Â°F.
The length of the day varies significantly over the course of the year. The shortest day is December 21 with 10:30 hours of daylight; the longest day is June 20 with 13:47 hours of daylight.
The earliest sunrise is at 5:36am on June 7 and the latest sunset is at 7:26pm on July 5. The latest sunrise is at 7:19am on January 14 and the earliest sunset is at 5:37pm on November 28.
Daylight savings time (DST) is not observed in 2012.
The median cloud cover ranges from 50% (partly cloudy) to 89% (mostly cloudy). The sky is cloudiest on January 24 and clearest on September 13. The clearer part of the year begins around June 27. The cloudier part of the year begins around November 9.
On September 13, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 57% of the time, and overcast or mostly cloudy 26% of the time.
On January 24, the cloudiest day of the year, the sky is overcast, mostly cloudy, or partly cloudy 64% of the time, and clear or mostly clear 17% of the time.
The probability that precipitation will be observed at this location varies throughout the year. Precipitation is most likely around January 29, occurring in 71% of days. Precipitation is least likely around July 20, occurring in 60% of days.
Over the entire year, the most common forms of precipitation are moderate rain, light rain, thunderstorms, and heavy rain.
Moderate rain is the most severe precipitation observed during 53% of those days with precipitation. It is most likely around January 13, when it is observed during 44% of all days.
Light rain is the most severe precipitation observed during 24% of those days with precipitation. It is most likely around December 15, when it is observed during 21% of all days.
Thunderstorms are the most severe precipitation observed during 14% of those days with precipitation. They are most likely around August 16, when it is observed during 17% of all days.
Heavy rain is the most severe precipitation observed during 10% of those days with precipitation. It is most likely around August 24, when it is observed during 10% of all days.
During the warm season, which lasts from June 14 to October 5, there is a 64% average chance that precipitation will be observed at some point during a given day. When precipitation does occur it is most often in the form of moderate rain (46% of days with precipitation have at worst moderate rain), thunderstorms (23%), light rain (18%), and heavy rain (13%).
During the cold season, which lasts from December 14 to March 17, there is a 70% average chance that precipitation will be observed at some point during a given day. When precipitation does occur it is most often in the form of moderate rain (60% of days with precipitation have at worst moderate rain), light rain (28%), and heavy rain (7%).
Either snow is exceptionally unlikely to fall at any time during the year at this location or this station does not reliably report precipitation types.
The relative humidity typically ranges from 54% (mildly humid) to 92% (very humid) over the course of the year, rarely dropping below 43% (comfortable) and reaching as high as 99% (very humid).
The air is driest around December 10, at which time the relative humidity drops below 60% (mildly humid) three days out of four; it is most humid around June 12, exceeding 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 year, the dew point typically varies from 46Â°F (dry) to 79Â°F (oppressive) and is rarely below 37Â°F (dry) or above 81Â°F (very oppressive).
There are two periods in the year that are most comfortable: The first is between January 1 and April 12 and the second is between November 12 and December 31. The air feels neither too dry nor too muggy during these periods.
Over the course of the year typical wind speeds vary from 3 mph to 20 mph (light air to fresh breeze), rarely exceeding 29 mph (strong breeze).
The highest average wind speed of 13 mph (moderate breeze) occurs around January 23, at which time the average daily maximum wind speed is 19 mph (fresh breeze).
The lowest average wind speed of 10 mph (gentle breeze) occurs around May 17, at which time the average daily maximum wind speed is 15 mph (moderate breeze).