Cha-am, Thailand Climate
The warmest month is April, with an average high of 34°C; the coldest is December, with an average low of 22°C. A normal year brings 1156 mm of precipitation.
Temperature through the year
The normal daily high and low. The line marks today.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
Normals for Sep 25
- Normal high
- 30°C
- Normal low
- 25°C
- Reanalysis high
- 32°Cin 2008
- Reanalysis low
- 24°Cin 2011
- Chance of a wet day
- 91%
- 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.
| Month | Avg high | Avg low | Warmest | Coldest | Precipitation | Wet days |
|---|---|---|---|---|---|---|
| January | 30°C | 22°C | 34°C (1998) | 16°C (1996) | 19 mm | 3.1 |
| February | 31°C | 24°C | 36°C (1998) | 17°C (2016) | 14 mm | 2.8 |
| March | 33°C | 25°C | 37°C (2013) | 18°C (2011) | 47 mm | 6.2 |
| April | 34°C | 27°C | 38°C (2016) | 22°C (2018) | 60 mm | 9.0 |
| May | 33°C | 27°C | 38°C (2016) | 24°C (1996) | 127 mm | 21.7 |
| June | 32°C | 26°C | 37°C (1992) | 24°C (2004) | 123 mm | 24.0 |
| July | 31°C | 26°C | 36°C (2015) | 24°C (2017) | 130 mm | 24.8 |
| August | 31°C | 26°C | 35°C (2015) | 24°C (2012) | 121 mm | 24.8 |
| September | 30°C | 26°C | 34°C (2015) | 24°C (2008) | 195 mm | 27.0 |
| October | 29°C | 25°C | 32°C (2019) | 20°C (1994) | 245 mm | 24.8 |
| November | 29°C | 24°C | 33°C (2006) | 18°C (2007) | 63 mm | 9.0 |
| December | 29°C | 22°C | 33°C (2015) | 12°C (1999) | 12 mm | 3.1 |
| Year | 31°C | 25°C | 1156 mm | 180 |
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.
1156 mm in a normal year, most in October.
Chance of a wet day
- Chance of a wet day
Humidity and comfort
NASA POWER reanalysis, 1991-2020, for the grid cell around Cha-am.
The muggiest month is April, when 100 percent of days are muggy or worse, with a mean dew point of 18°C or more.
| Month | Dew point | Humidity | Dry | Comfortable | Humid | Muggy | Oppressive | Miserable |
|---|---|---|---|---|---|---|---|---|
| January | 20°C | 72% | 1% | 5% | 18% | 39% | 36% | 1% |
| February | 21°C | 70% | 1% | 2% | 12% | 30% | 55% | 0% |
| March | 22°C | 70% | 0% | 1% | 3% | 16% | 77% | 4% |
| April | 23°C | 70% | 0% | 0% | 0% | 6% | 69% | 25% |
| May | 24°C | 75% | 0% | 0% | 0% | 0% | 34% | 66% |
| June | 24°C | 77% | 0% | 0% | 0% | 0% | 42% | 58% |
| July | 24°C | 78% | 0% | 0% | 0% | 0% | 64% | 36% |
| August | 24°C | 78% | 0% | 0% | 0% | 0% | 68% | 32% |
| September | 24°C | 81% | 0% | 0% | 0% | 0% | 52% | 48% |
| October | 24°C | 83% | 0% | 0% | 0% | 2% | 47% | 51% |
| November | 22°C | 80% | 0% | 0% | 3% | 17% | 63% | 16% |
| December | 20°C | 74% | 1% | 5% | 18% | 38% | 37% | 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 February, with the sky 36 percent covered on average; the cloudiest is August, at 91 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 July, averaging 13.7 km/h at 10 meters (33 feet) above the ground.
Daylight and sunshine
The longest day is Jun 14, with 12 h 53 min of daylight; the shortest is Dec 18, with 11 h 22 min.
- Day length
Solar energy
Average daily sunshine reaching the ground on a flat surface, in kilowatt-hours per square meter, clouds included.
Month pages
The weather in Cha-am 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.