Bangkok

Chatuchak, Thailand Climate

NASA POWER reanalysis for the half-degree grid cell around Chatuchak, 1991-2020; a grid cell is an area average and can differ from a thermometer in town by several degrees

The warmest month is March, with an average high of 37°C; the coldest is December, with an average low of 20°C. A normal year brings 1330 mm of precipitation.

Temperature through the year

The normal daily high and low. The line marks today.

Normal daily high and low temperature at Chatuchak through the year, in °C, with the record for each date.01020304050JanFebMarAprMayJunJulAugSepOctNovDec
  • Normal low
  • Normal high
  • Reanalysis extreme high
  • Reanalysis extreme low

Normals for Sep 25

Normal high
30°C
Normal low
24°C
Reanalysis high
33°Cin 2007
Reanalysis low
22°Cin 2011
Chance of a wet day
90%
Daylight
12 h 05 min

Month by month

Averages for 1991-2020. Wet days have at least 1 mm of precipitation in the reanalysis. Each month links to its own page.

MonthAvg highAvg lowWarmestColdestPrecipitationWet days
January33°C21°C39°C (2005)11°C (2009)12 mm3.1
February36°C23°C41°C (1998)13°C (2016)14 mm2.8
March37°C25°C42°C (2016)15°C (2011)43 mm6.2
April37°C26°C43°C (2016)19°C (2018)78 mm12.0
May34°C26°C42°C (2016)23°C (2006)164 mm21.7
June32°C25°C41°C (2015)22°C (2004)156 mm24.0
July32°C25°C39°C (2015)22°C (2000)161 mm24.8
August31°C24°C36°C (2016)22°C (2006)183 mm24.8
September31°C24°C35°C (2001)20°C (2000)276 mm27.0
October30°C24°C34°C (2019)16°C (1994)198 mm21.7
November30°C21°C37°C (2004)13°C (2007)36 mm6.0
December31°C20°C37°C (2019)8°C (1999)9 mm3.1
Year33°C24°C1330 mm177

Precipitation

Rain and melted snow together. The chance of a wet day is the share of days with at least 1 mm of precipitation in the reanalysis.

1330 mm in a normal year, most in September.

Chance of a wet day

The chance of at least 1 mm of precipitation in the reanalysis on each date at Chatuchak, in percent.020406080100JanFebMarAprMayJunJulAugSepOctNovDec
  • Chance of a wet day

Humidity and comfort

NASA POWER reanalysis, 1991-2020, for the grid cell around Chatuchak.

The muggiest month is May, when 101 percent of days are muggy or worse, with a mean dew point of 18°C or more.

MonthDew pointHumidityDryComfortableHumidMuggyOppressiveMiserable
January18°C63%7%18%24%32%18%0%
February19°C59%7%12%14%39%27%0%
March21°C61%1%3%7%37%51%2%
April23°C66%0%0%2%11%67%20%
May24°C76%0%0%0%2%30%69%
June24°C80%0%0%0%0%25%75%
July24°C81%0%0%0%0%40%60%
August24°C82%0%0%0%0%39%61%
September24°C85%0%0%0%0%18%82%
October24°C85%0%0%1%3%31%65%
November22°C80%0%1%8%25%48%18%
December19°C71%6%12%24%34%22%1%

Comfort is judged by the day's mean dew point: dry below 13°C, comfortable to 16°C, humid to 18°C, muggy to 21°C, oppressive to 24°C, miserable above.

Clouds

Average share of the sky covered, from satellite (CERES and GEWEX SRB) by way of NASA POWER, 1991-2020.

The clearest month is January, with the sky 36 percent covered on average; the cloudiest is August, at 92 percent.

Wind

The mean wind speed over the whole day, from the MERRA-2 reanalysis by way of NASA POWER. Gusts run well above it.

The windiest month is March, averaging 11.9 km/h at 10 meters (33 feet) above the ground.

Daylight and sunshine

The longest day is Jun 15, with 12 h 57 min of daylight; the shortest is Dec 17, with 11 h 18 min.

Hours of daylight at Chatuchak through the year.0510152025JanFebMarAprMayJunJulAugSepOctNovDec
  • Day length

Solar energy

Average daily sunshine reaching the ground on a flat surface, in kilowatt-hours per square meter, clouds included.

Sunrise and sunset calendar

Month pages

The weather in Chatuchak in each month, day by day.

What this means

A normal is the average of the thirty years 1991 to 2020, the period the World Meteorological Organization and NOAA use for comparison. It is an average, not a forecast: most days depart from it, and some by a long way.

Where no station record is within reach, the extremes shown are the highest and lowest the reanalysis produced for the date in 1991-2020, not measured records.

Cloud, humidity, wind and sunshine come from a reanalysis: a weather model run over the past with every observation fed in, averaged over a grid cell about 50 km across. It is consistent everywhere on Earth; it smooths local detail such as a lake shore or a valley.

More for this place

Nearby

Sources

Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.