# Huai So Subdistrict, Chiang Khong, Chiang Rai Province > Source: https://wherepedia.org/thailand/chiang-rai/chiang-khong/huai-so/ Subdistrict · Chiang Khong # Huai So Huai So is a subdistrict (tambon) of Thailand in Chiang Khong, Chiang Rai Province. It covers **204.1 km²**. 18 named villages and localities are recorded here, and 38 mapped services such as hospitals, banks and schools. - 204km² - 38mapped services - 363 mtypical elevation ## Where is Huai So? Huai So lies in [Chiang Khong](https://wherepedia.org/thailand/chiang-rai/chiang-khong/), [Chiang Rai Province](https://wherepedia.org/thailand/chiang-rai/), [Thailand](https://wherepedia.org/thailand/). It borders 7 other subdistricts: [Bunrueang](https://wherepedia.org/thailand/chiang-rai/chiang-khong/bunrueang/), [Chok Chai](https://wherepedia.org/thailand/chiang-rai/doi-luang/chok-chai/), [Khrueng](https://wherepedia.org/thailand/chiang-rai/chiang-khong/khrueng/), [Pa Sang](https://wherepedia.org/thailand/chiang-rai/wiang-chiang-rung/pa-sang/), [Si Don Chai](https://wherepedia.org/thailand/chiang-rai/chiang-khong/si-don-chai/), [Tat Khwan](https://wherepedia.org/thailand/chiang-rai/phaya-mengrai/tat-khwan/) and [Yang Hom](https://wherepedia.org/thailand/chiang-rai/khun-tan/yang-hom/). By area it is the 389th largest of 7,425 subdistricts in Thailand. It covers 26.7% of [Chiang Khong](https://wherepedia.org/thailand/chiang-rai/chiang-khong/). The centre of Huai So is about 702 km in a straight line from Bangkok, the capital. It is about 25 km from Chiang Khong, the main town of Chiang Khong. The centre point is at 20.0605° N, 100.2921° E. Local names: ห้วยซ้อ . Source: [Royal Thai Survey Department via OCHA HDX, administrative boundaries (COD-AB, CC BY-IGO)](https://data.humdata.org/dataset/cod-ab-tha). ## Villages and localities in Huai So Open gazetteers list **18 villages, towns and localities** in Huai So. Settlements here lie between about 358 m and 391 m above sea level (median 363 m). - Ban Chai Phatthana - Ban Huai So - Ban Huai So Nuea - Ban Huai So Tai - Ban Kaen - Ban Kaen Nakhon - Ban Kaen Nuea - Ban Kaen Tai - Ban Kiang - Ban Kiang Nuea - Ban Kiang Tai - Ban Mai Don Kaeo - Ban Noen Sombun - Ban Phu Wiang - Ban Rong Hua Fai - Ban Si Wilai - Ban Wiang Mok - Ban Wiang Thong Source: [GeoNames (CC BY 4.0) — settlements, natural and historic features](https://www.geonames.org/); [© OpenStreetMap contributors (ODbL), Geofabrik extract — named settlements](https://www.openstreetmap.org/copyright). ## Landscape and landmarks of Huai So Named natural and historic features inside Huai So, from the GeoNames gazetteer. ### Water 3 reservoirs and tanks; 3 rivers and streams. - Ang Kep Nam Huai Kiang - Ang Kep Nam Huai So - Ang Kep Nam Huai Yaek Sai - Huai Kiang - Huai Rong Hai - Huai Tha Chang ### Hills and mountains 13 mountains. - Doi Khun Pa Sak · 708 m - Doi Huai So · 679 m - Doi Huai Kaen · 675 m - Doi Huai Kiang · 642 m - Doi Kot Pu O · 533 m - Doi Tao · 520 m - Doi Mon Kong Khao · 493 m - Mon Klaep Kong · 493 m - Doi Wiang · 479 m - Doi Mon Pa Paek · 470 m - Doi Kio Ko · 461 m - Doi Ton Sathup · 406 m - Doi Pa Kuk · 382 m Source: [GeoNames (CC BY 4.0) — settlements, natural and historic features](https://www.geonames.org/). Places of worship are not listed. Elevations are from the GeoNames terrain model and are approximate. ## Weather in Huai So and the best time to visit Using the climate of Chiang Khong, the warmest month is Apr (average 27 °C) and the coolest is Dec (19 °C). About 1,127 mm of rain falls in a year; the wettest month is Aug (251 mm) and the driest Feb (5 mm). The most comfortable months for a visit are **October to April**. - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec Month Average °C Rain mm Jan 19 18 Feb 22 5 Mar 25 25 Apr 27 64 May 27 143 Jun 26 123 Jul 25 221 Aug 25 251 Sep 25 164 Oct 24 75 Nov 22 26 Dec 19 13 Source: [NASA POWER climatology, retrieved 2026-10-29](https://power.larc.nasa.gov/). ## Nearest hospital, bank and fuel from Huai So Need Nearest mapped Distance Hospital โรงพยาบาลส่งเสริมสุขภาพตำบลห้วยซ้อ · Huai So 1.6 km [Map](https://www.openstreetmap.org/?mlat=20.04660&mlon=100.29485#map=17/20.04660/100.29485) Bank Bank for Agriculture and Agriculture Cooperative bank, Boon Ruang branch · Bunrueang 8.3 km [Map](https://www.openstreetmap.org/?mlat=20.01029&mlon=100.35082#map=17/20.01029/100.35082) ATM Atm ธนาคารไทยพาณิชย์ · Wiang 25 km [Map](https://www.openstreetmap.org/?mlat=20.26056&mlon=100.40696#map=17/20.26056/100.40696) Petrol pump ปตท. · Huai So 1.1 km [Map](https://www.openstreetmap.org/?mlat=20.05267&mlon=100.29832#map=17/20.05267/100.29832) Hotel วัดบ้านเกี๋ยง · Huai So 1.4 km [Map](https://www.openstreetmap.org/?mlat=20.06738&mlon=100.30298#map=17/20.06738/100.30298) Mall ดอยหลวงอาหารสด · Pong Noi 21 km [Map](https://www.openstreetmap.org/?mlat=20.11642&mlon=100.10110#map=17/20.11642/100.10110) School โรงเรียนบ้านแก่นวิทยา · Huai So 1.4 km [Map](https://www.openstreetmap.org/?mlat=20.04850&mlon=100.29449#map=17/20.04850/100.29449) College โรงเรียนบ้านหก · Bunrueang 8.2 km [Map](https://www.openstreetmap.org/?mlat=20.00240&mlon=100.34084#map=17/20.00240/100.34084) Police station Bun Rueang Police Station · Khrueng 9.5 km [Map](https://www.openstreetmap.org/?mlat=20.03740&mlon=100.37956#map=17/20.03740/100.37956) Source: [Overture Maps places (CDLA-Permissive-2.0) and © OpenStreetMap contributors (ODbL)](https://overturemaps.org/). Straight-line distance from the centre of the division, within 40 km. ## Hospitals, banks and other services in Huai So Places mapped inside Huai So in open map data, by type. - Hospitals8 - Petrol pumps4 - Hotels4 - Schools5 - Restaurants17 Source: [Overture Maps places (CDLA-Permissive-2.0) and © OpenStreetMap contributors (ODbL)](https://overturemaps.org/). Coverage depends on what has been mapped; contact details are not shown. ## Other subdistricts in Chiang Khong - Bunrueang - Khrueng - Rim Khong - Sathan - Si Don Chai - Wiang ## Quick answers - Where is Huai So?In Chiang Khong, Chiang Rai Province, Thailand - What borders Huai So?Bunrueang, Chok Chai, Khrueng, Pa Sang, Si Don Chai, Tat Khwan and Yang Hom - How many villages are in Huai So?18 named settlements (GeoNames, OpenStreetMap) - What is the elevation of Huai So?Settlements lie between 358 m and 391 m - How many reservoirs and tanks are in Huai So?3 named in GeoNames - What is the highest point in Huai So?Doi Khun Pa Sak (708 m, GeoNames elevation model) - What is the best time to visit Huai So?October to April - Where is the nearest hospital to Huai So?โรงพยาบาลส่งเสริมสุขภาพตำบลห้วยซ้อ, about 1.6 km from the centre - Where is the nearest bank to Huai So?Bank for Agriculture and Agriculture Cooperative bank, Boon Ruang branch, about 8.3 km from the centre - Where is the nearest ATM to Huai So?Atm ธนาคารไทยพาณิชย์, about 25 km from the centre - Where is the nearest petrol pump to Huai So?ปตท., about 1.1 km from the centre - How many hospitals are in Huai So?8 mapped - How many petrol pumps are in Huai So?4 mapped - What is the P-code of Huai So?TH570305 (OCHA common operational dataset)