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Average Weather in Sawaengha Thailand

In Sawaengha, the wet season is oppressive and overcast, the dry season is muggy and partly cloudy, and it is hot year round. Over the course of the year, the temperature typically varies from 68°F to 98°F and is rarely below 62°F or above 104°F.

Climate Summary

hotswelteringhotJanFebMarAprMayJunJulAugSepOctNovDec61%61%8%8%overcastclearprecipitation: 8.4 inprecipitation: 8.4 in0.1 in0.1 inmuggy: 100%muggy: 100%37%37%beach/pool score: 7.0beach/pool score: 7.03.63.6
Click on each chart for more information.

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

Temperature

The hot season lasts for 2.0 months, from March 5 to May 6, with an average daily high temperature above 96°F. The hottest day of the year is April 13, with an average high of 98°F and low of 80°F.

The cool season lasts for 4.1 months, from September 11 to January 15, with an average daily high temperature below 90°F. The coldest day of the year is January 1, with an average low of 68°F and high of 89°F.

Average High and Low Temperature

Average High and Low Temperature in SawaenghahotcoolJanFebMarAprMayJunJulAugSepOctNovDec0°F10°F20°F30°F40°F50°F60°F70°F80°F90°F100°F110°FJan 189°FJan 189°FApr 1398°FApr 1398°F68°F68°F80°F80°FMar 596°FMar 596°FSep 1190°FSep 1190°F77°F77°F80°F80°F78°F78°FLowHigh
The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Average Hourly Temperature

Average Hourly Temperature in SawaenghaJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMwarmwarmhotswelteringcomfortablecomfortable
The average hourly temperature, color coded into bands: frigid < 15°F < freezing < 32°F < very cold < 45°F < cold < 55°F < cool < 65°F < comfortable < 75°F < warm < 85°F < hot < 95°F < sweltering. The shaded overlays indicate night and civil twilight.

Pasaquina, El Salvador (10,412 miles away); Santa Teresa, Venezuela (10,506 miles); and Anajatuba, Brazil (9,932 miles) are the far-away foreign places with temperatures most similar to Sawaengha (view comparison).

Clouds

In Sawaengha, the average percentage of the sky covered by clouds experiences extreme seasonal variation over the course of the year.

The clearer part of the year in Sawaengha begins around November 5 and lasts for 4.9 months, ending around April 2. On February 10, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 61% of the time, and overcast or mostly cloudy 39% of the time.

The cloudier part of the year begins around April 2 and lasts for 7.1 months, ending around November 5. On May 28, the cloudiest day of the year, the sky is overcast or mostly cloudy 92% of the time, and clear, mostly clear, or partly cloudy 8% of the time.

Cloud Cover Categories

Cloud Cover Categories in SawaenghaclearerclearercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Feb 1061%Feb 1061%May 288%May 288%Nov 534%Nov 534%Apr 234%Apr 234%clearmostly clearpartly cloudymostly cloudyovercast
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds: clear < 20% < mostly clear < 40% < partly cloudy < 60% < mostly cloudy < 80% < overcast.

Precipitation

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

The wetter season lasts 5.9 months, from April 30 to October 25, with a greater than 34% chance of a given day being a wet day. The chance of a wet day peaks at 67% on September 18.

The drier season lasts 6.1 months, from October 25 to April 30. The smallest chance of a wet day is 1% on December 21.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 67% on September 18.

Daily Chance of Precipitation

Daily Chance of Precipitation in SawaenghawetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Sep 1867%Sep 1867%Dec 211%Dec 211%Apr 3034%Apr 3034%Oct 2534%Oct 2534%rain
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

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. Sawaengha experiences extreme seasonal variation in monthly rainfall.

The rainy period of the year lasts for 8.9 months, from March 1 to November 29, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around September 20, with an average total accumulation of 8.4 inches.

The rainless period of the year lasts for 3.1 months, from November 29 to March 1. The least rain falls around December 30, with an average total accumulation of 0.1 inches.

Average Monthly Rainfall

The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average liquid-equivalent snowfall.

Sun

The length of the day in Sawaengha varies over the course of the year. In 2017, the shortest day is December 21, with 11 hours, 15 minutes of daylight; the longest day is June 21, with 13 hours, 0 minutes of daylight.

Hours of Daylight and Twilight

Hours of Daylight and Twilight in SawaenghaJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minMar 2012 hr, 7 minMar 2013 hr, 0 minJun 2113 hr, 0 minJun 2112 hr, 7 minSep 2312 hr, 7 minSep 2311 hr, 15 minDec 2111 hr, 15 minDec 21nightnightday
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise is at 5:48 AM on June 3, and the latest sunrise is 60 minutes later at 6:48 AM on January 22. The earliest sunset is at 5:46 PM on November 21, and the latest sunset is 1 hour, 6 minutes later at 6:52 PM on July 8.

Daylight saving time (DST) is not observed in Sawaengha during 2017.

Sunrise & Sunset with Twilight

Sunrise & Sunset with Twilight in SawaenghaJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 35:48 AMJun 35:48 AM6:52 PMJul 86:52 PMJul 8Nov 215:46 PMNov 215:46 PM6:48 AMJan 226:48 AMJan 22daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of the year 2017. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

Humidity

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.

Sawaengha experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 10 months, from January 29 to December 11, during which time the comfort level is muggy, oppressive, or miserable at least 53% of the time. The muggiest day of the year is August 16, with muggy conditions 100% of the time.

The least muggy day of the year is January 2, with muggy conditions 37% of the time.

Humidity Comfort Levels

Humidity Comfort Levels in SawaenghamuggyJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Jan 237%Jan 237%100%Aug 16100%Aug 16Jan 2953%Jan 2953%Dec 1153%Dec 1153%miserablemiserableoppressiveoppressivehumidhumiddrydrymuggymuggycomfortablecomfortable
The percentage of time spent at various humidity comfort levels, categorized by dew point: dry < 55°F < comfortable < 60°F < humid < 65°F < muggy < 70°F < oppressive < 75°F < miserable.

Wind

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 Sawaengha experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 6.9 months, from February 4 to September 2, with average wind speeds of more than 6.0 miles per hour. The windiest day of the year is June 27, with an average hourly wind speed of 7.4 miles per hour.

The calmer time of year lasts for 5.1 months, from September 2 to February 4. The calmest day of the year is October 2, with an average hourly wind speed of 4.6 miles per hour.

Average Wind Speed

Average Wind Speed in SawaenghawindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph1 mph2 mph3 mph4 mph5 mph6 mph7 mph8 mph9 mph10 mph11 mphJun 277.4 mphJun 277.4 mphOct 24.6 mphOct 24.6 mphFeb 46.0 mphFeb 46.0 mphSep 26.0 mphSep 26.0 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

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

The wind is most often from the south for 4.7 months, from February 3 to June 25 and for 1.6 weeks, from September 22 to October 3, with a peak percentage of 78% on April 4. The wind is most often from the west for 2.9 months, from June 25 to September 22, with a peak percentage of 56% on August 19. The wind is most often from the east for 4.0 months, from October 3 to February 3, with a peak percentage of 56% on January 1.

Wind Direction

Wind Direction in SawaenghaESWSEJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%westsouthnortheast
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions (north, east, south, and west), excluding hours in which the mean wind speed is less than 1 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Best Time of Year to Visit

To characterize how pleasant the weather is in Sawaengha 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 Sawaengha for general outdoor tourist activities is from early December to late January, with a peak score in the third week of December.

Tourism Score

Tourism Score in SawaenghaJanFebMarAprMayJunJulAugSepOctNovDec02468106.76.72.22.22.72.7 precipitationprecipitationcloudscloudstemperaturetemperaturetourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

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 Sawaengha for hot-weather activities is from late November to early March, with a peak score in the first week of February.

Beach/Pool Score

Beach/Pool Score in Sawaenghabest timebest timeJanFebMarAprMayJunJulAugSepOctNovDec02468107.07.03.63.63.83.8 precipitationprecipitationcloudscloudstemperaturetemperaturebeach/pool score
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

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.

Growing 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 in Sawaengha 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.

Time Spent in Various Temperature Bands and the Growing Season

Time Spent in Various Temperature Bands and the Growing Season in SawaenghaJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%100%Jan 1100%Jan 1100%Jul 3100%Jul 3warmhotswelteringcomfortablecool
The percentage of time spent in various temperature bands: frigid < 15°F < freezing < 32°F < very cold < 45°F < cold < 55°F < cool < 65°F < comfortable < 75°F < warm < 85°F < hot < 95°F < sweltering. The black line is the percentage chance that a given day is within the growing season.

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.

Growing Degree Days

Growing Degree Days in SawaenghaJanFebMarAprMayJunJulAugSepOctNovDec0°F2,000°F4,000°F6,000°F8,000°F10,000°FJan 490°FJan 490°FMar 21,800°FMar 21,800°FDec 3111,520°FDec 3111,520°F
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

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 2.1 months, from February 8 to April 12, with an average daily incident shortwave energy per square meter above 5.7 kWh. The brightest day of the year is March 6, with an average of 6.1 kWh.

The darker period of the year lasts for 4.3 months, from June 4 to October 13, with an average daily incident shortwave energy per square meter below 4.7 kWh. The darkest day of the year is September 13, with an average of 4.4 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy in SawaenghabrightdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWh8 kWhMar 66.1 kWhMar 66.1 kWhSep 134.4 kWhSep 134.4 kWhApr 125.7 kWhApr 125.7 kWhJun 44.7 kWhJun 44.7 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

For the purposes of this report, the geographical coordinates of Sawaengha are 14.752 deg latitude, 100.325 deg longitude, and 33 ft elevation.

The topography within 2 miles of Sawaengha is essentially flat, with a maximum elevation change of 49 feet and an average elevation above sea level of 33 feet. Within 10 miles is essentially flat (121 feet). Within 50 miles contains only modest variations in elevation (2,152 feet).

The area within 2 miles of Sawaengha is covered by cropland (100%), within 10 miles by cropland (98%), and within 50 miles by cropland (92%).

Data Sources

This report illustrates the typical weather in Sawaengha, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

There are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Sawaengha.

For each station, the records are corrected for the elevation difference between that station and Sawaengha according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

The estimated value at Sawaengha is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Sawaengha and a given station.

The stations contributing to this reconstruction are: Don Mueang International Airport (37%, 98 kilometers, south); Nakhon Sawan Airport (34%, 105 kilometers, north); and Kanchanaburi (28%, 118 kilometers, southwest).

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , by Jean Meeus.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for aiports and weather stations are provided by AskGeo.com .

Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.