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May Weather in Sam Khok Thailand

Daily high temperatures decrease by 2°F, from 96°F to 94°F, rarely falling below 89°F or exceeding 101°F.

Daily low temperatures are around 80°F, rarely falling below 76°F or exceeding 84°F.

For reference, on April 13, the hottest day of the year, temperatures in Sam Khok typically range from 80°F to 97°F, while on January 1, the coldest day of the year, they range from 70°F to 89°F.

Average High and Low Temperature in May in Sam Khok

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 hourly average temperatures for the quarter of the year centered on May. 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.

Average Hourly Temperature in May in Sam Khok

Average Hourly Temperature in May in Sam KhokMay112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMAprJunwarmwarmhotsweltering
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 average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Pasaquina, El Salvador (10,454 miles away); San Pablo, Colombia (10,757 miles); and Luzilândia, Brazil (9,815 miles) are the far-away foreign places with temperatures most similar to Sam Khok (view comparison).

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The month of May in Sam Khok experiences increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 83% to 92%. The highest chance of overcast or mostly cloudy conditions is 93% on May 29.

The clearest day of the month is May 1, with clear, mostly clear, or partly cloudy conditions 17% of the time.

For reference, on May 29, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 93%, while on February 10, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 58%.

Cloud Cover Categories in May in Sam Khok

Cloud Cover Categories in May in Sam KhokMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%AprJunFeb 1058%Feb 1058%May 117%May 117%May 318%May 318%May 1111%May 1111%May 218%May 218%clearmostly cloudyovercastpartly cloudymostly clear
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Sam Khok, the chance of a wet day over the course of May is very rapidly increasing, starting the month at 37% and ending it at 51%.

For reference, the year's highest daily chance of a wet day is 71% on September 23, and its lowest chance is 2% on December 20.

Probability of Precipitation in May in Sam Khok

Probability of Precipitation in May in Sam KhokMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%5%5%10%10%15%15%20%20%25%25%30%30%35%35%40%40%45%45%50%50%55%55%AprJunMay 2851%May 2851%May 137%May 137%May 1146%May 1146%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 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 May in Sam Khok is rapidly increasing, starting the month at 3.8 inches, when it rarely exceeds 7.1 inches or falls below 1.4 inches, and ending the month at 4.8 inches, when it rarely exceeds 7.1 inches or falls below 2.6 inches.

The highest average 31-day accumulation is 4.9 inches on May 24.

Average Monthly Rainfall in May in Sam Khok

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 snowfall.

Over the course of May in Sam Khok, the length of the day is gradually increasing. From the start to the end of the month, the length of the day increases by 16 minutes, implying an average daily increase of 31 seconds, and weekly increase of 3 minutes, 39 seconds.

The shortest day of the month is May 1, with 12 hours, 38 minutes of daylight and the longest day is May 31, with 12 hours, 54 minutes of daylight.

Hours of Daylight and Twilight in May in Sam Khok

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 latest sunrise of the month in Sam Khok is 5:55 AM on May 1 and the earliest sunrise is 7 minutes earlier at 5:48 AM on May 31.

The earliest sunset is 6:34 PM on May 1 and the latest sunset is 8 minutes later at 6:42 PM on May 31.

Daylight saving time is not observed in Sam Khok during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 5:50 AM and sets 12 hours, 58 minutes later, at 6:48 PM, while on December 21, the shortest day of the year, it rises at 6:37 AM and sets 11 hours, 18 minutes later, at 5:55 PM.

Sunrise & Sunset with Twilight in May in Sam Khok

The solar day over the course of May. 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.

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.

Solar Elevation and Azimuth in May in Sam Khok

Solar Elevation and Azimuth in May in Sam KhokMay112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMAprJun0010102020203030404050505060607070808080000101020203030304040505060606070708080
northeastsouthwest
Solar elevation and azimuth over the course of May 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

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

Moon Rise, Set & Phases in May in Sam Khok

Moon Rise, Set & Phases in May in Sam KhokMay112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMAprJunApr 91:22 AMApr 91:22 AMApr 246:50 AMApr 246:50 AMMay 810:23 AMMay 810:23 AMMay 238:54 PMMay 238:54 PMJun 67:38 PMJun 67:38 PMJun 228:09 AMJun 228:09 AM6:19 AM6:19 AM7:09 PM7:09 PM6:03 PM6:03 PM5:57 AM5:57 AM5:40 AM5:40 AM6:53 PM6:53 PM6:32 PM6:32 PM6:03 AM6:03 AM5:12 AM5:12 AM6:41 PM6:41 PM6:17 PM6:17 PM5:43 AM5:43 AM
The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.
May 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
50%12:26 AMESE12:01 PMWSW-6:14 AMS233,370 mi
2
44%1:16 AMESE1:01 PMWSW-7:09 AMS230,943 mi
3
33%2:02 AMESE1:59 PMWSW-8:01 AMS228,764 mi
4
22%2:46 AME2:56 PMW-8:51 AMS227,027 mi
5
13%3:28 AME3:53 PMW-9:40 AMS225,939 mi
6
6%4:10 AME4:51 PMW-10:29 AMS225,682 mi
7
1%4:54 AMENE5:51 PMWNW-11:20 AMN226,375 mi
8
0%5:40 AMENE6:53 PMWNW-12:14 PMN228,037 mi
9
2%6:31 AMENE7:56 PMWNW-1:12 PMN230,568 mi
10
6%7:26 AMENE8:59 PMWNW-2:12 PMN233,761 mi
11
13%8:24 AMENE9:59 PMWNW-3:12 PMN237,328 mi
12
21%9:23 AMENE10:54 PMWNW-4:10 PMN240,950 mi
13
30%10:21 AMENE11:43 PMWNW-5:03 PMN244,324 mi
14
40%11:16 AMENE--5:53 PMN247,201 mi
15
50%-12:26 AMWNW12:07 PMENE6:38 PMN249,399 mi
16
60%-1:05 AMWNW12:55 PMENE7:19 PMS250,813 mi
17
69%-1:40 AMW1:42 PME7:59 PMS251,408 mi
18
78%-2:14 AMW2:27 PME8:37 PMS251,214 mi
19
85%-2:47 AMW3:12 PME9:16 PMS250,316 mi
20
92%-3:20 AMW3:58 PME9:56 PMS248,837 mi
21
96%-3:55 AMWSW4:46 PMESE10:39 PMS246,924 mi
22
99%-4:33 AMWSW5:37 PMESE11:26 PMS244,735 mi
23
100%-5:16 AMWSW6:32 PMESE--
24
100%-6:03 AMWSW7:29 PMESE12:17 AMS242,420 mi
25
98%-6:56 AMWSW8:29 PMESE1:12 AMS240,110 mi
26
95%-7:53 AMWSW9:27 PMESE2:11 AMS237,903 mi
27
88%-8:54 AMWSW10:23 PMESE3:11 AMS235,866 mi
28
80%-9:55 AMWSW11:14 PMESE4:10 AMS234,029 mi
29
70%-10:56 AMWSW-5:05 AMS232,409 mi
30
59%12:01 AMESE11:54 AMWSW-5:58 AMS231,022 mi
31
50%12:44 AME12:50 PMW-6:47 AMS229,903 mi

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 in Sam Khok is essentially constant during May, remaining within 0% of 99% throughout.

The highest chance of a muggy day during May is 100% on May 27.

For reference, on May 23, 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 53% of the time.

Humidity Comfort Levels in May in Sam Khok

Humidity Comfort Levels in May in Sam KhokMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%AprJunMay 27100%May 27100%May 199%May 199%May 1199%May 1199%miserablemiserableoppressiveoppressivemuggymuggy
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

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 Sam Khok is essentially constant during May, remaining within 0.2 miles per hour of 6.4 miles per hour throughout.

For reference, on March 11, the windiest day of the year, the daily average wind speed is 7.4 miles per hour, while on October 7, the calmest day of the year, the daily average wind speed is 4.6 miles per hour.

The lowest daily average wind speed during May is 6.2 miles per hour on May 10.

Average Wind Speed in May in Sam Khok

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The hourly average wind direction in Sam Khok throughout May is predominantly from the south, with a peak proportion of 75% on May 1.

Wind Direction in May in Sam Khok

Wind Direction in May in Sam KhokSWMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%20%80%40%60%60%40%80%20%100%0%AprJunwestsoutheast
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Sam Khok 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 in Sam Khok is essentially constant during May, remaining around 87°F throughout.

The highest average surface water temperature during May is 87°F on May 12.

Average Water Temperature in May in Sam Khok

The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

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 Sam Khok 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 in May in Sam Khok

Time Spent in Various Temperature Bands and the Growing Season in May in Sam KhokMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%AprJun100%May 16100%May 16warmhotsweltering
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 percentage of time spent in various temperature bands. 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.

The average accumulated growing degree days in Sam Khok are very rapidly increasing during May, increasing by 1,012°F, from 3,852°F to 4,864°F, over the course of the month.

Growing Degree Days in May in Sam Khok

Growing Degree Days in May in Sam KhokMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031313,800°F3,800°F4,000°F4,000°F4,200°F4,200°F4,400°F4,400°F4,600°F4,600°F4,800°F4,800°F5,000°F5,000°FAprJunMay 13,852°FMay 13,852°FMay 314,864°FMay 314,864°FMay 114,190°FMay 114,190°FMay 214,525°FMay 214,525°F
The average growing degree days accumulated over the course of May, with 25th to 75th and 10th to 90th percentile bands.

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 in Sam Khok is essentially constant during May, remaining within 0.2 kWh of 4.7 kWh throughout.

Average Daily Incident Shortwave Solar Energy in May in Sam Khok

Average Daily Incident Shortwave Solar Energy in May in Sam KhokMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWhAprJunMay 15.0 kWhMay 15.0 kWhMay 314.5 kWhMay 314.5 kWhMay 114.7 kWhMay 114.7 kWhMay 214.5 kWhMay 214.5 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.

For the purposes of this report, the geographical coordinates of Sam Khok are 14.066 deg latitude, 100.523 deg longitude, and 20 ft elevation.

The topography within 2 miles of Sam Khok contains only modest variations in elevation, with a maximum elevation change of 121 feet and an average elevation above sea level of 15 feet. Within 10 miles also contains only modest variations in elevation (233 feet). Within 50 miles contains only modest variations in elevation (2,543 feet).

The area within 2 miles of Sam Khok is covered by cropland (100%), within 10 miles by cropland (94%), and within 50 miles by cropland (84%).

This report illustrates the typical weather in Sam Khok, 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 Sam Khok.

For each station, the records are corrected for the elevation difference between that station and Sam Khok 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 Sam Khok is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Sam Khok and a given station.

The stations contributing to this reconstruction are:

To get a sense of how much these sources agree with each other, you can view a comparison of Sam Khok and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , 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 airports and weather stations are provided by AskGeo.com .

Maps are © OpenStreetMap contributors.

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.

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