Climate in Isarn
(Thailand)
Average daytime and nighttime temperatures
All climate diagrams on this site result from the collected data from ten measuring weather stations in Isarn.
All data correspond to the average monthly values of the last 20 years.
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Isarn is one of the coldest regions in Thailand with an average daily high temperature of only 33 degrees. The climate is very warm with an annual average of 33 degrees, but has few truly tropical and muggy months. It is warm or hot yearlong. Due to less rain, the best time for traveling is from November to April. The most rain days occur from from May to September.
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› 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 Isarn. In August, 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, August 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 0.2 mm, the least amount of rain falls in December. August, on the other hand, has the most rain.
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 83%, September is the most uncomfortable. In March, 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 Isarn.
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 »Isarn«
Alone 13 cities with over 100,000 inhabitants are located here. The region has a west-east extension of about 600 km and over 440 km from north to south.It consists of the 21 provinces Amnat Charoen, Bueng Kan, Buriram, Chaiyaphum, Kalasin, Khon Kaen, Loei, Maha Sarakham, Mukdahan, Nakhon Phanom, Nakhon Ratchasima, Nong Bua Lamphu, Nong Khai, Roi Et, Sakon Nakhon, Sisaket, Surin, Ubon Ratchathani, Udon Thani, Uthai Thani and Yasothon.
| City | Population | Geo position | |
|---|---|---|---|
| Buriram | 206,314 | 14° 59' 40"N | 103° 6' 14"E |
| Kalasin | 188,197 | 16° 25' 58"N | 103° 30' 24"E |
| Nong Khai | 183,416 | 17° 52' 42"N | 102° 44' 31"E |
| Chaiyaphum | 177,167 | 15° 48' 38"N | 102° 1' 44"E |
| Udon Thani | 153,329 | 17° 24' 56"N | 102° 47' 9"E |
| Roi Et | 152,959 | 16° 3' 24"N | 103° 39' 11"E |
| Si Sa Ket | 148,412 | 15° 6' 53"N | 104° 19' 46"E |
| Nakhon Ratchasima | 131,286 | 14° 58' 14"N | 102° 6' 7"E |
| Khon Kaen | 120,045 | 16° 26' 48"N | 102° 49' 59"E |
| Maha Sarakham | 115,896 | 16° 11' 5"N | 103° 18' 2"E |
| Nong Bua Lamphu | 110,415 | 17° 12' 15"N | 102° 26' 26"E |
| Surin | 104,651 | 14° 52' 55"N | 103° 29' 37"E |
| Loei | 102,965 | 17° 29' 26"N | 101° 43' 39"E |
| Nakhon Phanom | 94,244 | 17° 24' 39"N | 104° 46' 43"E |
| Ubon Ratchathani | 77,306 | 15° 14' 18"N | 104° 50' 55"E |
| Sakon Nakhon | 76,237 | 17° 9' 40"N | 104° 8' 50"E |
| Amnat Charoen | 64,404 | 15° 51' 31"N | 104° 37' 44"E |
| Yasothon | 62,433 | 15° 47' 39"N | 104° 8' 42"E |
| Uthai Thani | 54,339 | 15° 22' 46"N | 100° 1' 28"E |
| Pak Chong | 48,999 | 14° 42' 29"N | 101° 24' 58"E |
| Mukdahan | 46,941 | 16° 32' 43"N | 104° 43' 25"E |
| Chum Phae | 46,335 | 16° 32' 39"N | 102° 5' 57"E |
| Warin Chamrap | 43,102 | 15° 11' 35"N | 104° 51' 46"E |
| Kantharalak | 36,621 | 14° 38' 26"N | 104° 38' 60"E |
| Det Udom | 35,669 | 14° 54' 22"N | 105° 4' 42"E |
| Ban Phai | 35,583 | 16° 3' 36"N | 102° 43' 51"E |
| Tha Bo | 35,292 | 17° 51' 0"N | 102° 34' 53"E |
| Na Klang | 31,024 | 17° 18' 26"N | 102° 11' 20"E |
| Ban Phan Don | 29,211 | 17° 8' 34"N | 102° 58' 21"E |
| Kaeng Khro | 29,056 | 16° 6' 31"N | 102° 15' 29"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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