Climate and Average Weather Year Round in Wang Nam Khiao Thailand

In Wang Nam Khiao, the wet season is hot, oppressive, and overcast and the dry season is warm, muggy, and partly cloudy. Over the course of the year, the temperature typically varies from 63°F to 91°F and is rarely below 57°F or above 96°F.

Based on the tourism score, the best time of year to visit Wang Nam Khiao for warm-weather activities is from late November to mid February.

The hot season lasts for 2.1 months, from March 6 to May 9, with an average daily high temperature above 89°F. The hottest month of the year in Wang Nam Khiao is April, with an average high of 91°F and low of 74°F.

The cool season lasts for 2.1 months, from November 16 to January 21, with an average daily high temperature below 83°F. The coldest month of the year in Wang Nam Khiao is December, with an average low of 65°F and high of 81°F.

In Wang Nam Khiao, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.

The clearer part of the year in Wang Nam Khiao begins around November 3 and lasts for 4.8 months, ending around March 28.

The clearest month of the year in Wang Nam Khiao is January, during which on average the sky is clear, mostly clear, or partly cloudy 57% of the time.

The cloudier part of the year begins around March 28 and lasts for 7.2 months, ending around November 3.

The cloudiest month of the year in Wang Nam Khiao is June, during which on average the sky is overcast or mostly cloudy 91% of the time.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Wang Nam Khiao varies very significantly throughout the year.

The wetter season lasts 6.0 months, from April 21 to October 21, with a greater than 33% chance of a given day being a wet day. The month with the most wet days in Wang Nam Khiao is September, with an average of 19.0 days with at least 0.04 inches of precipitation.

The drier season lasts 6.0 months, from October 21 to April 21. The month with the fewest wet days in Wang Nam Khiao is December, with an average of 0.4 days with at least 0.04 inches of precipitation.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The month with the most days of rain alone in Wang Nam Khiao is September, with an average of 19.0 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 65% on September 10.

Rainfall

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Wang Nam Khiao experiences extreme seasonal variation in monthly rainfall.

The rainy period of the year lasts for 9.1 months, from February 20 to November 24, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Wang Nam Khiao is September, with an average rainfall of 9.7 inches.

The rainless period of the year lasts for 2.9 months, from November 24 to February 20. The month with the least rain in Wang Nam Khiao is December, with an average rainfall of 0.1 inches.

The length of the day in Wang Nam Khiao varies over the course of the year. In 2024, the shortest day is December 21, with 11 hours, 17 minutes of daylight; the longest day is June 21, with 12 hours, 59 minutes of daylight.

The earliest sunrise is at 5:42 AM on June 2, and the latest sunrise is 59 minutes later at 6:41 AM on January 24. The earliest sunset is at 5:40 PM on November 21, and the latest sunset is 1 hour, 5 minutes later at 6:45 PM on July 8.

Daylight saving time (DST) is not observed in Wang Nam Khiao during 2024.

The figure below presents a compact representation of key lunar data for 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.

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.

Wang Nam Khiao experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 10 months, from January 29 to December 3, during which time the comfort level is muggy, oppressive, or miserable at least 47% of the time.

The month with the fewest muggy days in Wang Nam Khiao is December, with 11.0 days that are muggy or worse.

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 Wang Nam Khiao experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 3.2 months, from May 26 to August 31, with average wind speeds of more than 6.5 miles per hour. The windiest month of the year in Wang Nam Khiao is July, with an average hourly wind speed of 7.7 miles per hour.

The calmer time of year lasts for 8.8 months, from August 31 to May 26. The calmest month of the year in Wang Nam Khiao is September, with an average hourly wind speed of 5.6 miles per hour.

The predominant average hourly wind direction in Wang Nam Khiao varies throughout the year.

The wind is most often from the south for 3.9 months, from February 13 to June 11, with a peak percentage of 61% on May 21. The wind is most often from the west for 3.6 months, from June 11 to September 29, with a peak percentage of 68% on August 16. The wind is most often from the north for 2.3 months, from October 28 to January 5, with a peak percentage of 44% on January 1.

Wang Nam Khiao 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 water temperature experiences some seasonal variation over the course of the year.

The time of year with warmer water lasts for 2.6 months, from April 9 to June 27, with an average temperature above 86°F. The month of the year in Wang Nam Khiao with the warmest water is May, with an average temperature of 87°F.

The time of year with cooler water lasts for 2.0 months, from December 10 to February 10, with an average temperature below 82°F. The month of the year in Wang Nam Khiao with the coolest water is January, with an average temperature of 81°F.

To characterize how pleasant the weather is in Wang Nam Khiao throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Wang Nam Khiao for general outdoor tourist activities is from late November to mid February, with a peak score in the last week of December.

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Wang Nam Khiao for hot-weather activities is from late January to late March, with a peak score in the last week of February.

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

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 in Wang Nam Khiao 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.

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 experiences some seasonal variation over the course of the year.

The brighter period of the year lasts for 2.2 months, from January 28 to April 2, with an average daily incident shortwave energy per square meter above 5.7 kWh. The brightest month of the year in Wang Nam Khiao is March, with an average of 5.9 kWh.

The darker period of the year lasts for 4.3 months, from May 31 to October 9, with an average daily incident shortwave energy per square meter below 4.7 kWh. The darkest month of the year in Wang Nam Khiao is September, with an average of 4.5 kWh.

For the purposes of this report, the geographical coordinates of Wang Nam Khiao are 14.418 deg latitude, 101.861 deg longitude, and 1,371 ft elevation.

The topography within 2 miles of Wang Nam Khiao contains very significant variations in elevation, with a maximum elevation change of 1,020 feet and an average elevation above sea level of 1,386 feet. Within 10 miles contains very significant variations in elevation (2,454 feet). Within 50 miles contains large variations in elevation (4,426 feet).

The area within 2 miles of Wang Nam Khiao is covered by cropland (66%) and grassland (28%), within 10 miles by trees (56%) and cropland (23%), and within 50 miles by cropland (61%) and trees (30%).