Summer Weather at Prachin Buri Thailand

Daily high temperatures are around 91°F, rarely falling below 85°F or exceeding 97°F.

Daily low temperatures are around 79°F, rarely falling below 76°F or exceeding 82°F.

For reference, on April 11, the hottest day of the year, temperatures at Prachin Buri typically range from 79°F to 97°F, while on January 2, the coldest day of the year, they range from 70°F to 90°F.

The figure below shows you a compact characterization of the hourly average summer temperatures. 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.

Mapastepec, Mexico (10,188 miles away); María la Baja, Colombia (10,771 miles); and Buriti dos Lopes, Piauí, Brazil (9,831 miles) are the far-away foreign places with temperatures most similar to Prachin Buri (view comparison).

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The summer at Prachin Buri experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 91% throughout the season.

The clearest day of the summer is August 31, with clear, mostly clear, or partly cloudy conditions 10% of the time.

For reference, on May 29, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 92%, while on January 25, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 57%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At Prachin Buri, the chance of a wet day over the course of the summer is very rapidly increasing, starting the season at 52% and ending it at 66%.

For reference, the year's highest daily chance of a wet day is 70% on September 20, and its lowest chance is 1% on December 23.

Rainfall

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

The average sliding 31-day rainfall during the summer at Prachin Buri is very rapidly increasing, starting the season at 5.9 inches, when it rarely exceeds 8.4 inches or falls below 3.3 inches, and ending the season at 9.7 inches, when it rarely exceeds 13.8 inches or falls below 6.2 inches.

Over the course of the summer at Prachin Buri, the length of the day is decreasing. From the start to the end of the season, the length of the day decreases by 30 minutes, implying an average daily decrease of 20 seconds, and weekly decrease of 2 minutes, 19 seconds.

The shortest day of the summer is August 31, with 12 hours, 24 minutes of daylight and the longest day is June 21, with 12 hours, 58 minutes of daylight.

The earliest sunrise of the summer at Prachin Buri is 5:45 AM on June 2 and the latest sunrise is 17 minutes later at 6:02 AM on August 31.

The latest sunset is 6:47 PM on July 10 and the earliest sunset is 20 minutes earlier at 6:26 PM on August 31.

Daylight saving time is not observed at Prachin Buri during 2025.

For reference, on June 21, the longest day of the year, the Sun rises at 5:47 AM and sets 12 hours, 58 minutes later, at 6:45 PM, while on December 21, the shortest day of the year, it rises at 6:33 AM and sets 11 hours, 18 minutes later, at 5:51 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 the summer of 2025. 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 Prachin Buri is essentially constant during the summer, remaining around 100% throughout.

For reference, on May 24, the muggiest day of the year, there are muggy conditions 100% of the time, while on December 30, the least muggy day of the year, there are muggy conditions 44% 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 Prachin Buri is essentially constant during the summer, remaining within 0.5 miles per hour of 6.7 miles per hour throughout.

For reference, on December 13, the windiest day of the year, the daily average wind speed is 7.5 miles per hour, while on October 3, the calmest day of the year, the daily average wind speed is 4.7 miles per hour.

The highest daily average wind speed during the summer is 7.2 miles per hour on August 6.

The wind direction at Prachin Buri during the summer is predominantly out of the south from June 1 to June 22 and the west from June 22 to August 31.

Prachin Buri 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 at Prachin Buri is gradually decreasing during the summer, falling by 2°F, from 87°F to 85°F, over the course of the season.

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 Prachin Buri 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 Prachin Buri are very rapidly increasing during the summer, increasing by 2,948°F, from 4,842°F to 7,790°F, over the course of the season.

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 Prachin Buri is essentially constant during the summer, remaining within 0.1 kWh of 4.4 kWh throughout.

For the purposes of this report, the geographical coordinates of Prachin Buri are 14.077 deg latitude, 101.379 deg longitude, and 75 ft elevation.

The topography within 2 miles of Prachin Buri is essentially flat, with a maximum elevation change of 85 feet and an average elevation above sea level of 28 feet. Within 10 miles is essentially flat (1,532 feet). Within 50 miles contains very significant variations in elevation (4,537 feet).

The area within 2 miles of Prachin Buri is covered by cropland (70%), artificial surfaces (16%), and shrubs (14%), within 10 miles by cropland (84%) and shrubs (12%), and within 50 miles by cropland (68%) and trees (22%).