December Weather in Fukuoka Japan

Daily high temperatures decrease by 7°F, from 57°F to 51°F, rarely falling below 43°F or exceeding 65°F.

Daily low temperatures decrease by 6°F, from 45°F to 39°F, rarely falling below 32°F or exceeding 53°F.

For reference, on August 5, the hottest day of the year, temperatures in Fukuoka typically range from 78°F to 89°F, while on January 26, the coldest day of the year, they range from 37°F to 49°F.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on December. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Kill Devil Hills, United States (7,348 miles away) and Nashtārūd, Iran (4,358 miles) are the far-away foreign places with temperatures most similar to Fukuoka (view comparison).

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The month of December in Fukuoka experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 30% throughout the month. The lowest chance of overcast or mostly cloudy conditions is 29% on December 16.

The clearest day of the month is December 16, with clear, mostly clear, or partly cloudy conditions 71% of the time.

For reference, on July 1, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 72%, while on December 16, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 71%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Fukuoka, the chance of a wet day over the course of December is gradually decreasing, starting the month at 23% and ending it at 19%.

For reference, the year's highest daily chance of a wet day is 57% on July 1, and its lowest chance is 18% on January 23.

Rainfall

To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during December in Fukuoka is decreasing, starting the month at 2.5 inches, when it rarely exceeds 4.6 inches or falls below 0.9 inches, and ending the month at 1.8 inches, when it rarely exceeds 3.6 inches or falls below 0.5 inches.

The lowest average 31-day accumulation is 1.8 inches on December 29.

Over the course of December in Fukuoka, the length of the day is essentially constant. The shortest day of the month is December 21, with 9 hours, 55 minutes of daylight and the longest day is December 1, with 10 hours, 5 minutes of daylight.

The earliest sunrise of the month in Fukuoka is 7:04 AM on December 1 and the latest sunrise is 18 minutes later at 7:22 AM on December 31.

The earliest sunset is 5:09 PM on December 4 and the latest sunset is 10 minutes later at 5:20 PM on December 31.

Daylight saving time is not observed in Fukuoka during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 5:08 AM and sets 14 hours, 23 minutes later, at 7:31 PM, while on December 21, the shortest day of the year, it rises at 7:18 AM and sets 9 hours, 55 minutes later, at 5:14 PM.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

The figure below presents a compact representation of key lunar data for December 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The chance that a given day will be muggy in Fukuoka is essentially constant during December, remaining around 0% throughout.

The lowest chance of a muggy day during December is 0% on December 18.

For reference, on August 3, the muggiest day of the year, there are muggy conditions 98% of the time, while on December 4, the least muggy day of the year, there are muggy conditions 0% of the time.

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Fukuoka is gradually increasing during December, increasing from 9.3 miles per hour to 10.0 miles per hour over the course of the month.

For reference, on January 13, the windiest day of the year, the daily average wind speed is 10.2 miles per hour, while on June 2, the calmest day of the year, the daily average wind speed is 6.7 miles per hour.

The wind direction in Fukuoka during December is predominantly out of the north from December 1 to December 12 and the west from December 12 to December 31.

Fukuoka is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average surface water temperature in Fukuoka is decreasing during December, falling by 4°F, from 66°F to 61°F, over the course of the month.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season in Fukuoka typically lasts for 10 months (312 days), from around February 19 to around December 27, rarely starting before January 24 or after March 14, and rarely ending before December 11 or after January 11.

The month of December in Fukuoka is very likely fully outside of the growing season, with the chance that a given day is in the growing season very rapidly decreasing from 97% to 38% over the course of the month.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

The average accumulated growing degree days in Fukuoka are gradually increasing during December, increasing by 58°F, from 5,069°F to 5,126°F, over the course of the month.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy in Fukuoka is essentially constant during December, remaining within 0.1 kWh of 2.7 kWh throughout.

The lowest average daily incident shortwave solar energy during December is 2.6 kWh on December 24.

For the purposes of this report, the geographical coordinates of Fukuoka are 33.600 deg latitude, 130.417 deg longitude, and 10 ft elevation.

The topography within 2 miles of Fukuoka contains only modest variations in elevation, with a maximum elevation change of 167 feet and an average elevation above sea level of 18 feet. Within 10 miles contains only modest variations in elevation (2,940 feet). Within 50 miles contains large variations in elevation (4,101 feet).

The area within 2 miles of Fukuoka is covered by grassland (48%), trees (19%), shrubs (19%), and water (13%), within 10 miles by trees (35%) and water (34%), and within 50 miles by water (56%) and trees (28%).