Climate in Central Thailand

Average daytime and nighttime temperatures

All climatic diagrams on this site result from the collected data from two measuring weather stations in Central Thailand.
All data correspond to the average monthly values of the last 20 years.
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Central Thailand is one of the warmest region in Thailand with an average daily high temperature of 34 degrees. High humidity and hot temperatures make the weather at times pleasant but also tropical humid. It is warm to hot all year round and invites to bathe at average water temperatures of 28 degrees. Dued to the lesser rain the best time for traveling is from November to April. Most precipitation falls from May to October.
Overview: Climate in Thailand
Daylengths and sun positions in Thailand
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Hours of sunshine per daySunshine hours per day in Central Thailand
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 8 hours per day, February is the sunniest month in the region of Central Thailand. In August the sun shines the shortest.
Rainy days per monthRainy days per month in Central Thailand
A rainy day is a day on which at least an amount of 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 19 rainy days, September offers the most number of rainy days, and in December the least.
Precipitation in mm/dayPrecipitation in Central Thailand
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 0.6 mm, the least rain falls in December. September, on the other hand, has the most rain.
Water temperatureWater temperatures in Central Thailand
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 temperatures in Central Thailand are in April, when the water is 28 °C.
Relative humidity in %Relative humidity in Central Thailand
Warm air can absorb more moisture than cold air. The relative humidity indicates how much moisture of the physically possible is actually contained in the air. At high humidity, the person feels uncomfortable and perceives this as oppressive. In general, a relative humidity of 40-60% gives as pleasant. With humidity averaging 84%, September is the most uncomfortable. In January, on the other hand, it is easier to endure.
Absolute humidity in g/m³Absolute humidity in Central Thailand
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 Central Thailand.
Humidex in °CHumidex in Central Thailand
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 Central Thailand

Most important cities in the region »Central Thailand«

As the capital region, it is arguably the most important part of Thailand. Alone 2 major cities with over 600,000 inhabitants are located here. The region has a west-east extension of about 130 km and over 180 km from north to south.
It consists of the 13 provinces Ang Thong, Bangkok, Chai Nat, Lop Buri, Nakhon Nayok, Nakhon Pathom, Nonthaburi, Pathum Thani, Phra Nakhon Si Ayutthaya, Samut Prakan, Samut Sakhon, Sara Buri and Sing Buri.

CityPopulationGeo position
Bangkok10,539,00013° 45' 14"N100° 30' 5"E
Samut Prakan648,36013° 35' 58"N100° 35' 48"E
Pathum Thani317,01414° 0' 48"N100° 31' 50"E
Mueang Nonthaburi255,79313° 51' 39"N100° 30' 53"E
Phra Nakhon Si Ayutthaya240,25014° 21' 6"N100° 34' 39"E
Saraburi224,91314° 31' 60"N100° 55' 0"E
Samut Sakhon195,89513° 32' 51"N100° 16' 25"E
Pak Kret189,25813° 54' 47"N100° 29' 56"E
Phra Pradaeng171,33313° 39' 31"N100° 32' 1"E
Lop Buri119,95614° 47' 53"N100° 39' 14"E
Khlong Luang118,55114° 3' 53"N100° 38' 45"E
Ban Rangsit81,08414° 1' 40"N100° 45' 22"E
Bang Kruai78,30513° 48' 18"N100° 28' 22"E
Nakhon Pathom77,65113° 49' 11"N100° 2' 39"E
Krathum Baen72,81913° 39' 12"N100° 15' 35"E
Ang Thong72,52314° 35' 18"N100° 27' 10"E
Sing Buri68,52414° 53' 16"N100° 24' 17"E
Ban Lam Luk Ka60,70013° 58' 39"N100° 46' 40"E
Phra Phutthabat57,00814° 43' 31"N100° 47' 43"E
Chai Nat46,66915° 11' 11"N100° 7' 25"E
Ban Phaeo41,90413° 35' 27"N100° 6' 27"E
Bang Bua Thong41,56713° 55' 4"N100° 25' 27"E
Nong Khae41,06714° 20' 26"N100° 52' 2"E
Sam Phran37,11513° 43' 37"N100° 12' 55"E
Ban Khlong Bang Sao Thong31,15313° 38' 30"N100° 49' 58"E
Nakhon Nayok30,40714° 12' 17"N101° 12' 47"E
Kaeng Khoi30,33214° 35' 10"N100° 59' 51"E
Bang Bo District28,37613° 34' 60"N100° 49' 0"E
Ban Bang Kadi Pathum Thani27,91113° 59' 57"N100° 32' 59"E
Chai Badan25,19615° 11' 60"N101° 7' 60"E

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