Climate and Average Weather Year Round in Khao Saming Thailand

In Khao Saming, the wet season is overcast, the dry season is partly cloudy, and it is oppressive and hot year round. Over the course of the year, the temperature typically varies from 70°F to 90°F and is rarely below 65°F or above 94°F.

Based on the beach/pool score, the best time of year to visit Khao Saming for hot-weather activities is from late November to mid March.

The temperature in Khao Saming varies so little throughout the year that it is not entirely meaningful to discuss hot and cold seasons.

In Khao Saming, 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 Khao Saming begins around November 12 and lasts for 4.4 months, ending around March 25.

The clearest month of the year in Khao Saming is January, during which on average the sky is clear, mostly clear, or partly cloudy 52% of the time.

The cloudier part of the year begins around March 25 and lasts for 7.6 months, ending around November 12.

The cloudiest month of the year in Khao Saming is June, during which on average the sky is overcast or mostly cloudy 93% of the time.

© OpenStreetMap contributors

Compare Khao Saming to:

CompareMap

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

The wetter season lasts 5.9 months, from April 30 to October 26, with a greater than 41% chance of a given day being a wet day. The month with the most wet days in Khao Saming is July, with an average of 23.7 days with at least 0.04 inches of precipitation.

The drier season lasts 6.1 months, from October 26 to April 30. The month with the fewest wet days in Khao Saming is December, with an average of 1.4 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 Khao Saming is July, with an average of 23.7 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 79% on August 6.

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. Khao Saming experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year in Khao Saming. The month with the most rain in Khao Saming is August, with an average rainfall of 20.7 inches.

The month with the least rain in Khao Saming is December, with an average rainfall of 0.4 inches.

The length of the day in Khao Saming does not vary substantially over the course of the year, staying within 51 minutes of 12 hours throughout. In 2026, the shortest day is December 22, with 11 hours, 24 minutes of daylight; the longest day is June 21, with 12 hours, 51 minutes of daylight.

The earliest sunrise is at 5:44 AM on May 31, and the latest sunrise is 52 minutes later at 6:36 AM on January 25. The earliest sunset is at 5:41 PM on November 19, and the latest sunset is 58 minutes later at 6:39 PM on July 11.

Daylight saving time (DST) is not observed in Khao Saming during 2026.

The figure below presents a compact representation of key lunar data for 2026. 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.

Khao Saming experiences significant seasonal variation in the perceived humidity.

The muggier period of the year lasts for 11 months, from January 21 to December 8, during which time the comfort level is muggy, oppressive, or miserable at least 70% of the time.

The month with the fewest muggy days in Khao Saming is December, with 20.0 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 Khao Saming experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 3.6 months, from May 25 to September 13, with average wind speeds of more than 5.3 miles per hour. The windiest month of the year in Khao Saming is August, with an average hourly wind speed of 6.3 miles per hour.

The calmer time of year lasts for 8.4 months, from September 13 to May 25. The calmest month of the year in Khao Saming is October, with an average hourly wind speed of 4.1 miles per hour.

The predominant average hourly wind direction in Khao Saming varies throughout the year.

The wind is most often from the south for 4.4 months, from January 24 to June 6, with a peak percentage of 74% on April 2. The wind is most often from the west for 4.3 months, from June 6 to October 14, with a peak percentage of 71% on August 14. The wind is most often from the north for 3.0 months, from October 14 to January 14, with a peak percentage of 47% on January 1.

Khao Saming 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 1.7 months, from April 12 to June 3, with an average temperature above 86°F. The month of the year in Khao Saming with the warmest water is May, with an average temperature of 87°F.

The time of year with cooler water lasts for 2.5 months, from December 8 to February 22, with an average temperature below 83°F. The month of the year in Khao Saming with the coolest water is January, with an average temperature of 82°F.

To characterize how pleasant the weather is in Khao Saming 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 Khao Saming for general outdoor tourist activities is from early December to mid February, with a peak score in the first week of January.

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 Khao Saming for hot-weather activities is from late November to mid March, with a peak score in the second 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 Khao Saming 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 2.5 months, from January 11 to March 26, with an average daily incident shortwave energy per square meter above 5.5 kWh. The brightest month of the year in Khao Saming is February, with an average of 5.8 kWh.

The darker period of the year lasts for 5.4 months, from May 4 to October 17, with an average daily incident shortwave energy per square meter below 4.3 kWh. The darkest month of the year in Khao Saming is September, with an average of 3.9 kWh.

For the purposes of this report, the geographical coordinates of Khao Saming are 12.354 deg latitude, 102.436 deg longitude, and 46 ft elevation.

The topography within 2 miles of Khao Saming contains only modest variations in elevation, with a maximum elevation change of 358 feet and an average elevation above sea level of 67 feet. Within 10 miles contains only modest variations in elevation (879 feet). Within 50 miles contains very significant variations in elevation (5,902 feet).

The area within 2 miles of Khao Saming is covered by cropland (100%), within 10 miles by cropland (72%) and shrubs (11%), and within 50 miles by water (39%) and trees (33%).