This report describes the typical weather at the Amami Airport (Amami, 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.
Amami 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 (90%) and forests (8%).
Over the course of a year, the temperature typically varies from 55Â°F to 88Â°F and is rarely below 49Â°F or above 90Â°F.
The warm season lasts from June 20 to October 2 with an average daily high temperature above 83Â°F. The hottest day of the year is July 20, with an average high of 88Â°F and low of 82Â°F.
The cold season lasts from December 12 to March 18 with an average daily high temperature below 67Â°F. The coldest day of the year is January 31, with an average low of 55Â°F and high of 62Â°F.
The length of the day varies significantly over the course of the year. The shortest day is December 21 with 10:20 hours of daylight; the longest day is June 20 with 13:57 hours of daylight.
The earliest sunrise is at 5:23am on June 9 and the latest sunset is at 7:23pm on July 2. The latest sunrise is at 7:15am on January 11 and the earliest sunset is at 5:24pm on December 1.
Daylight saving time (DST) is not observed in 2012.
The median cloud cover ranges from 60% (partly cloudy) to 89% (mostly cloudy). The sky is cloudiest on January 9 and clearest on August 20. The clearer part of the year begins around June 3. The cloudier part of the year begins around October 26.
On August 20, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 12% of the time, and overcast or mostly cloudy 10% of the time.
On January 9, the cloudiest day of the year, the sky is overcast, mostly cloudy, or partly cloudy 19% of the time, and clear or mostly clear 3% of the time.
The probability that precipitation will be observed at this location varies throughout the year. Precipitation is most likely around January 27, occurring in 73% of days. Precipitation is least likely around July 25, occurring in 54% of days.
Over the entire year, the most common forms of precipitation are moderate rain and light rain.
Moderate rain is the most severe precipitation observed during 52% of those days with precipitation. It is most likely around February 9, when it is observed during 41% of all days.
Light rain is the most severe precipitation observed during 32% of those days with precipitation. It is most likely around January 17, when it is observed during 28% of all days.
During the warm season, which lasts from June 20 to October 2, there is a 58% 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 (49% of days with precipitation have at worst moderate rain), light rain (24%), thunderstorms (20%), and heavy rain (7%).
During the cold season, which lasts from December 12 to March 18, there is a 71% 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 (55% of days with precipitation have at worst moderate rain) and light rain (37%).
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 55% (mildly humid) to 92% (very humid) over the course of the year, rarely dropping below 43% (comfortable) and reaching as high as 100% (very humid).
The air is driest around December 10, at which time the relative humidity drops below 61% (mildly humid) three days out of four; it is most humid around June 17, exceeding 89% (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 44Â°F (dry) to 78Â°F (oppressive) and is rarely below 35Â°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 May 1 and the second is between October 29 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 4 mph to 16 mph (light breeze to moderate breeze), rarely exceeding 24 mph (strong breeze).
The highest average wind speed of 14 mph (moderate breeze) occurs around October 16, at which time the average daily maximum wind speed is 16 mph (moderate breeze).
The lowest average wind speed of 7 mph (light breeze) occurs around July 15, at which time the average daily maximum wind speed is 12 mph (moderate breeze).