July Weather at Chiang Mai International Airport Thailand

Daily high temperatures are around 89°F, rarely falling below 83°F or exceeding 94°F.

Daily low temperatures are around 76°F, rarely falling below 73°F or exceeding 78°F.

For reference, on April 12, the hottest day of the year, temperatures at Chiang Mai International Airport typically range from 74°F to 97°F, while on January 8, the coldest day of the year, they range from 59°F to 84°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.

Santa Fe y la Mar, Mexico (9,718 miles away) and Mwaya, Tanzania (4,846 miles) are the far-away foreign places with temperatures most similar to Chiang Mai International Airport (view comparison).

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The month of July at Chiang Mai International Airport experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 92% throughout the month.

The clearest day of the month is July 3, with clear, mostly clear, or partly cloudy conditions 9% of the time.

For reference, on August 2, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 93%, while on February 20, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 75%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At Chiang Mai International Airport, the chance of a wet day over the course of July is very rapidly increasing, starting the month at 40% and ending it at 56%.

For reference, the year's highest daily chance of a wet day is 61% on September 2, and its lowest chance is 2% on January 28.

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 Chiang Mai International Airport is very rapidly increasing, starting the month at 3.9 inches, when it rarely exceeds 5.9 inches or falls below 2.0 inches, and ending the month at 6.0 inches, when it rarely exceeds 9.9 inches or falls below 3.2 inches.

Over the course of July at Chiang Mai International Airport, the length of the day is gradually decreasing. From the start to the end of the month, the length of the day decreases by 16 minutes, implying an average daily decrease of 32 seconds, and weekly decrease of 3 minutes, 42 seconds.

The shortest day of the month is July 31, with 12 hours, 59 minutes of daylight and the longest day is July 1, with 13 hours, 14 minutes of daylight.

The earliest sunrise of the month at Chiang Mai International Airport is 5:50 AM on July 1 and the latest sunrise is 10 minutes later at 6:01 AM on July 31.

The latest sunset is 7:05 PM on July 5 and the earliest sunset is 6 minutes earlier at 6:59 PM on July 31.

Daylight saving time is not observed at Chiang Mai International Airport during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 5:47 AM and sets 13 hours, 16 minutes later, at 7:03 PM, while on December 21, the shortest day of the year, it rises at 6:52 AM and sets 11 hours, 0 minutes later, at 5:52 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 Chiang Mai International Airport is essentially constant during July, remaining around 94% throughout.

For reference, on August 10, the muggiest day of the year, there are muggy conditions 94% of the time, while on January 6, the least muggy day of the year, there are muggy conditions 4% 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 Chiang Mai International Airport is essentially constant during July, remaining within 0.1 miles per hour of 2.7 miles per hour throughout.

For reference, on March 5, the windiest day of the year, the daily average wind speed is 3.0 miles per hour, while on September 14, the calmest day of the year, the daily average wind speed is 2.1 miles per hour.

The hourly average wind direction at Chiang Mai International Airport throughout July is predominantly from the west, with a peak proportion of 55% on July 7.

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 Chiang Mai International Airport 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 Chiang Mai International Airport are very rapidly increasing during July, increasing by 914°F, from 5,094°F to 6,008°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 Chiang Mai International Airport is essentially constant during July, remaining within 0.2 kWh of 4.8 kWh throughout.

For the purposes of this report, the geographical coordinates of Chiang Mai International Airport are 18.767 deg latitude, 98.967 deg longitude, and 1,024 ft elevation.

The topography within 2 miles of Chiang Mai International Airport contains only modest variations in elevation, with a maximum elevation change of 472 feet and an average elevation above sea level of 1,034 feet. Within 10 miles contains only modest variations in elevation (4,593 feet). Within 50 miles also contains extreme variations in elevation (7,733 feet).

The area within 2 miles of Chiang Mai International Airport is covered by cropland (53%) and artificial surfaces (43%), within 10 miles by cropland (56%) and trees (30%), and within 50 miles by trees (78%) and cropland (19%).