Climate in Central Thailand

Average daytime and nighttime temperatures

All climate 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 regions in Thailand with an average daily high temperature of 34 degrees. 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 28 degrees. Due to less rain, the best time for traveling is from November to April. Most precipitation falls from May to October.

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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 8 hours per day, February is the sunniest month in the region of Central Thailand. In September, 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 19 rain days, September offers the most rain days, while December 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 0.5 mm, the least amount of rain falls in December. September, 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 Central Thailand are in April, when the water is 28 °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 84%, September is the most uncomfortable. In January, 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 Central 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

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.

City	Population	Geo position
Bangkok	10,539,000	13° 45' 14"N	100° 30' 5"E
Samut Prakan	648,360	13° 35' 58"N	100° 35' 48"E
Pathum Thani	317,014	14° 0' 48"N	100° 31' 50"E
Mueang Nonthaburi	255,793	13° 51' 39"N	100° 30' 53"E
Phra Nakhon Si Ayutthaya	240,250	14° 21' 6"N	100° 34' 39"E
Saraburi	224,913	14° 31' 60"N	100° 55' 0"E
Samut Sakhon	195,895	13° 32' 51"N	100° 16' 25"E
Pak Kret	189,258	13° 54' 47"N	100° 29' 56"E
Phra Pradaeng	171,333	13° 39' 31"N	100° 32' 1"E
Lop Buri	119,956	14° 47' 53"N	100° 39' 14"E
Khlong Luang	118,551	14° 3' 53"N	100° 38' 45"E
Ban Rangsit	81,084	14° 1' 40"N	100° 45' 22"E
Bang Kruai	78,305	13° 48' 18"N	100° 28' 22"E
Nakhon Pathom	77,651	13° 49' 11"N	100° 2' 39"E
Krathum Baen	72,819	13° 39' 12"N	100° 15' 35"E
Ang Thong	72,523	14° 35' 18"N	100° 27' 10"E
Sing Buri	68,524	14° 53' 16"N	100° 24' 17"E
Ban Lam Luk Ka	60,700	13° 58' 39"N	100° 46' 40"E
Phra Phutthabat	57,008	14° 43' 31"N	100° 47' 43"E
Chai Nat	46,669	15° 11' 11"N	100° 7' 25"E
Ban Phaeo	41,904	13° 35' 27"N	100° 6' 27"E
Bang Bua Thong	41,567	13° 55' 4"N	100° 25' 27"E
Nong Khae	41,067	14° 20' 26"N	100° 52' 2"E
Sam Phran	37,115	13° 43' 37"N	100° 12' 55"E
Ban Khlong Bang Sao Thong	31,153	13° 38' 30"N	100° 49' 58"E
Nakhon Nayok	30,407	14° 12' 17"N	101° 12' 47"E
Kaeng Khoi	30,332	14° 35' 10"N	100° 59' 51"E
Bang Bo District	28,376	13° 34' 60"N	100° 49' 0"E
Ban Bang Kadi Pathum Thani	27,911	13° 59' 57"N	100° 32' 59"E
Chai Badan	25,196	15° 11' 60"N	101° 7' 60"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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