July Weather at Chanthaburi Thailand

Daily high temperatures are around 87°F, rarely falling below 83°F or exceeding 90°F.

Daily low temperatures are around 78°F, rarely falling below 75°F or exceeding 81°F.

For reference, on April 14, the hottest day of the year, temperatures at Chanthaburi typically range from 78°F to 91°F, while on January 1, the coldest day of the year, they range from 71°F to 89°F.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on July. 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.

Acajutla, El Salvador (10,462 miles away); Manaus, Amazonas, Brazil (11,063 miles); and Maracanaú, Ceará, Brazil (9,700 miles) are the far-away foreign places with temperatures most similar to Chanthaburi (view comparison).

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The month of July at Chanthaburi experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 91% throughout the month. The lowest chance of overcast or mostly cloudy conditions is 91% on July 23.

The clearest day of the month is July 23, with clear, mostly clear, or partly cloudy conditions 9% of the time.

For reference, on May 25, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 93%, while on February 7, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 55%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At Chanthaburi, the chance of a wet day over the course of July is gradually increasing, starting the month at 71% and ending it at 74%.

For reference, the year's highest daily chance of a wet day is 76% on September 17, and its lowest chance is 2% on December 22.

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 July at Chanthaburi is increasing, starting the month at 15.4 inches, when it rarely exceeds 22.2 inches or falls below 9.4 inches, and ending the month at 16.0 inches, when it rarely exceeds 23.0 inches or falls below 10.1 inches.

Over the course of July at Chanthaburi, the length of the day is essentially constant. The shortest day of the month is July 31, with 12 hours, 41 minutes of daylight and the longest day is July 1, with 12 hours, 51 minutes of daylight.

The earliest sunrise of the month at Chanthaburi is 5:49 AM on July 1 and the latest sunrise is 8 minutes later at 5:57 AM on July 31.

The latest sunset is 6:41 PM on July 10 and the earliest sunset is 3 minutes earlier at 6:38 PM on July 31.

Daylight saving time is not observed at Chanthaburi during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 5:47 AM and sets 12 hours, 52 minutes later, at 6:39 PM, while on December 21, the shortest day of the year, it rises at 6:28 AM and sets 11 hours, 23 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 July 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 Chanthaburi is essentially constant during July, remaining around 100% throughout.

For reference, on April 29, the muggiest day of the year, there are muggy conditions 100% of the time, while on December 31, the least muggy day of the year, there are muggy conditions 55% 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 Chanthaburi is essentially constant during July, remaining within 0.2 miles per hour of 7.6 miles per hour throughout.

For reference, on August 5, the windiest day of the year, the daily average wind speed is 7.8 miles per hour, while on October 8, the calmest day of the year, the daily average wind speed is 4.7 miles per hour.

The hourly average wind direction at Chanthaburi throughout July is predominantly from the west, with a peak proportion of 65% on July 31.

Chanthaburi 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 Chanthaburi is essentially constant during July, remaining around 85°F throughout.

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 Chanthaburi 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 Chanthaburi are very rapidly increasing during July, increasing by 947°F, from 5,681°F to 6,628°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 Chanthaburi is essentially constant during July, remaining within 0.1 kWh of 4.0 kWh throughout.

For the purposes of this report, the geographical coordinates of Chanthaburi are 12.600 deg latitude, 102.117 deg longitude, and 23 ft elevation.

The topography within 2 miles of Chanthaburi contains only modest variations in elevation, with a maximum elevation change of 102 feet and an average elevation above sea level of 20 feet. Within 10 miles contains only modest variations in elevation (3,232 feet). Within 50 miles contains large variations in elevation (5,515 feet).

The area within 2 miles of Chanthaburi is covered by cropland (90%), within 10 miles by cropland (63%) and trees (19%), and within 50 miles by cropland (35%) and water (34%).