December Weather at Mae Sariang Thailand

Daily high temperatures are around 85°F, rarely falling below 80°F or exceeding 90°F. The lowest daily average high temperature is 84°F on December 30.

Daily low temperatures decrease by 6°F, from 64°F to 58°F, rarely falling below 52°F or exceeding 70°F.

For reference, on April 14, the hottest day of the year, temperatures at Mae Sariang typically range from 73°F to 98°F, while on January 30, the coldest day of the year, they range from 56°F to 88°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.

Macedonio Alonso, Mexico (9,588 miles away); Totolapa, Mexico (9,943 miles); and Ipinda, Tanzania (4,770 miles) are the far-away foreign places with temperatures most similar to Mae Sariang (view comparison).

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The month of December at Mae Sariang experiences decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 42% to 31%.

The clearest day of the month is December 30, with clear, mostly clear, or partly cloudy conditions 69% of the time.

For reference, on August 1, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 95%, while on February 20, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 73%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At Mae Sariang, the chance of a wet day over the course of December is gradually decreasing, starting the month at 5% and ending it at 2%.

For reference, the year's highest daily chance of a wet day is 67% on August 6, and its lowest chance is 1% on January 26.

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 at Mae Sariang is essentially constant, remaining about 0.3 inches throughout, and rarely exceeding 1.4 inches or falling below -0.0 inches.

Over the course of December at Mae Sariang, the length of the day is essentially constant. The shortest day of the month is December 21, with 11 hours, 3 minutes of daylight and the longest day is December 1, with 11 hours, 7 minutes of daylight.

The earliest sunrise of the month at Mae Sariang is 6:43 AM on December 1 and the latest sunrise is 16 minutes later at 6:59 AM on December 31.

The earliest sunset is 5:50 PM on December 1 and the latest sunset is 12 minutes later at 6:03 PM on December 31.

Daylight saving time is not observed at Mae Sariang during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 5:53 AM and sets 13 hours, 13 minutes later, at 7:06 PM, while on December 21, the shortest day of the year, it rises at 6:55 AM and sets 11 hours, 3 minutes later, at 5:57 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 at Mae Sariang is very rapidly decreasing during December, falling from 57% to 17% over the course of the month.

For reference, on June 2, the muggiest day of the year, there are muggy conditions 100% of the time, while on January 25, the least muggy day of the year, there are muggy conditions 10% 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 at Mae Sariang is essentially constant during December, remaining around 2.3 miles per hour throughout.

For reference, on June 24, the windiest day of the year, the daily average wind speed is 3.1 miles per hour, while on September 29, the calmest day of the year, the daily average wind speed is 1.8 miles per hour.

The hourly average wind direction at Mae Sariang throughout December is predominantly from the east, with a peak proportion of 73% on December 1.

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).

Temperatures at Mae Sariang are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year.

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 at Mae Sariang are rapidly increasing during December, increasing by 590°F, from 8,986°F to 9,576°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 at Mae Sariang is essentially constant during December, remaining within 0.1 kWh of 5.1 kWh throughout.

The lowest average daily incident shortwave solar energy during December is 5.0 kWh on December 10.

For the purposes of this report, the geographical coordinates of Mae Sariang are 18.167 deg latitude, 97.933 deg longitude, and 725 ft elevation.

The topography within 2 miles of Mae Sariang contains very significant variations in elevation, with a maximum elevation change of 1,650 feet and an average elevation above sea level of 899 feet. Within 10 miles contains very significant variations in elevation (4,173 feet). Within 50 miles also contains extreme variations in elevation (8,415 feet).

The area within 2 miles of Mae Sariang is covered by trees (66%) and cropland (34%), within 10 miles by trees (89%) and cropland (11%), and within 50 miles by trees (82%) and shrubs (11%).