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Climate in Southern Thailand

Average daytime and nighttime temperatures


All climate diagrams on this site result from the collected data from five measuring weather stations in Southern Thailand.
All data correspond to the average monthly values of the last 20 years.


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Southern Thailand is the coldest region in Thailand with an average high temperature of only 32°C. High humidity and hot temperatures make the weather pleasant at times but also tropical humid. It is warm to hot all year round, inviting bathing at average water temperatures of 29 degrees. Due to less rain, the best time for traveling is from January to April. Most precipitation falls from July to November.
Overview: Climate in Thailand
Daylengths and sun positions in Thailand
Compare climate with other regions or countries
Sunshine hours per day
The number of hours of sunshine refers to the time when the sun is actually visible. That is, without any obstruction of visibility by clouds, fog or mountains. With 9 hours per day, February is the sunniest month in the region of Southern Thailand. In October, the sun shines the least.
Rain days per month
A rain day is a day on which at least 0.1 mm precipitation (=0.1 liter) per square meter falls. This can be rain, snow, hail or even dew. So it does not have to rain the whole day. With 18 rain days, October offers the most rain days, while February has the fewest.
Precipitation amount in mm/day
The amount of precipitation is measured in millimeters per square meter. Thus, at two mm/day, two liters of water fall on one square meter within 24 hours. With only 2.0 mm, the least amount of rain falls in February. November, on the other hand, has the most rain.
Water temperatures in °C
Water temperature depends not only on solar radiation within the same region, but also on ocean currents. For example, depending on the season, cold or warm water masses are moved from other areas. The warmest water temperatures in Southern Thailand are in May, when the water is 29 °C.
Relative humidity in %
Warm air can absorb more moisture than cold air. The relative humidity indicates how much moisture can be physically contained in the air. At high humidity, a person feels uncomfortable and perceives this as oppressive. In general, a relative humidity of 40-60% feels pleasant. With humidity averaging 85%, October is the most uncomfortable. In April, on the other hand, it is easier to endure.
Absolute humidity in g/m³
In warm months, there is also a higher absolute humidity almost everywhere. At a temperature of 25°C, air can absorb up to 23 grams of water per cubic meter. At 20°C, it is only 17.3 grams. A relative humidity of 40% at 25°C thus corresponds to an absolute humidity of 9.2 grams of water. From a proportion of approx. 13.5 grams, humans perceive the air as muggy. This limit is exceeded throughout the year in Southern Thailand.
Humidex
The "Humidex" (humidity index) is an index of well-being in warmer areas, calculated from the air temperature, relative humidity and dew point. The index corresponds approximately to the temperature felt. At high temperatures, the body transports heat away by sweating. At high humidity, the ambient air can only absorb a small amount of sweat and thus one feels uncomfortable. An index of 20-29 is considered comfortable. Up to 39, people perceive the air as slightly uncomfortable, and above 40, as very uncomfortable. Values above 45 are dangerous in the long run and often lead to heat stroke.
Climate charts for other regions in Thailand

Map of Southern Thailand

Most important cities in the region »Southern Thailand«

Alone 7 cities with over 100,000 inhabitants are located here. The region has a west-east extension of about 410 km and over 530 km from north to south.

It consists of the 14 provinces Chumphon, Krabi, Nakhon Si Thammarat, Narathiwat, Pattani, Phangnga, Phatthalung, Phuket, Ranong, Satun, Songkhla, Surat Thani, Trang and Yala.


CityPopulationGeo position
Songkhla407,4497° 11' 56"N100° 35' 42"E
Nakhon Si Thammarat259,5428° 25' 60"N99° 58' 0"E
Narathiwat162,6116° 25' 35"N101° 49' 23"E
Hat Yai159,6277° 0' 30"N100° 28' 36"E
Surat Thani130,1149° 8' 24"N99° 19' 59"E
Trang119,1277° 33' 23"N99° 36' 41"E
Pattani116,3966° 52' 5"N101° 15' 0"E
Phuket91,4537° 53' 26"N98° 23' 53"E
Ban Mai86,8997° 12' 15"N100° 32' 42"E
Chumphon83,36710° 29' 45"N99° 10' 47"E
Phatthalung72,8187° 37' 4"N100° 4' 41"E
Yala61,2936° 32' 24"N101° 16' 53"E
Krabi55,3238° 4' 21"N98° 54' 38"E
Ban Talat Yai52,1927° 53' 5"N98° 24' 0"E
Ko Samui50,0009° 32' 8"N99° 56' 8"E
Sadao46,2366° 38' 20"N100° 25' 24"E
Su-ngai Kolok42,7766° 1' 47"N101° 57' 57"E
Satun40,0006° 37' 23"N100° 4' 0"E
Wichit38,7017° 53' 22"N98° 23' 7"E
Kathu34,8357° 55' 4"N98° 19' 60"E
Phang Nga34,0858° 27' 3"N98° 31' 47"E
Ban Ratsada33,5347° 54' 35"N98° 24' 9"E
Yaring31,1116° 51' 58"N101° 22' 8"E
Ranong30,7809° 57' 57"N98° 38' 5"E
Betong29,6045° 46' 28"N101° 4' 20"E
Thung Song28,2238° 9' 52"N99° 40' 49"E
Ron Phibun26,6218° 10' 45"N99° 51' 15"E
Phunphin25,8109° 6' 39"N99° 13' 55"E
Pak Phanang25,0148° 21' 4"N100° 12' 7"E
Ban Talat Nua23,3817° 53' 6"N98° 23' 8"E


Data basis: German Weather Service, individual values averaged and supplemented by own elements. Data on cities and inhabitants: geonames.org, United Nations Statistics Division and own research.
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