# Si Wichian Subdistrict, Nam Yuen, Ubon Ratchathani Province > Source: https://wherepedia.org/thailand/ubon-ratchathani/nam-yuen/si-wichian/ Subdistrict · Nam Yuen # Si Wichian Si Wichian is a subdistrict (tambon) of Thailand in Nam Yuen, Ubon Ratchathani Province. It covers **98.7 km²**. 21 named villages and localities are recorded here, and 91 mapped services such as hospitals, banks and schools. - 98.7km² - 91mapped services - 187 mtypical elevation ## Where is Si Wichian? Si Wichian lies in [Nam Yuen](https://wherepedia.org/thailand/ubon-ratchathani/nam-yuen/), [Ubon Ratchathani Province](https://wherepedia.org/thailand/ubon-ratchathani/), [Thailand](https://wherepedia.org/thailand/). It borders 3 other subdistricts: [Bu Pueai](https://wherepedia.org/thailand/ubon-ratchathani/nam-yuen/bu-pueai/), [Dom Pradit](https://wherepedia.org/thailand/ubon-ratchathani/nam-yuen/dom-pradit/) and [Song](https://wherepedia.org/thailand/ubon-ratchathani/nam-yuen/song/). By area it is the 1324th largest of 7,425 subdistricts in Thailand. It covers 9.0% of [Nam Yuen](https://wherepedia.org/thailand/ubon-ratchathani/nam-yuen/). The centre of Si Wichian is about 492 km in a straight line from Bangkok, the capital. The centre point is at 14.4446° N, 105.0110° E. Local names: สีวิเชียร . 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 Si Wichian Open gazetteers list **21 villages, towns and localities** in Si Wichian. Settlements here lie between about 172 m and 207 m above sea level (median 187 m). - Ban Bon - Ban Bu Puai - Ban Dap Sam Thuan - Ban Huai Kaeo - Ban Kaset Phu Thong - Ban Kham Kha - Ban Na Samakkhi - Ban Na Ta Moe - Ban Noi Non Charoen - Ban Non Charoen - Ban Non Sawan - Ban Non Thong - Ban Phuet Udom - Ban Sa-nguan Rat - Ban Sam Wai - Ban Si Bunrueang - Ban Si Mueang Mai - Ban Si Wichian - Ban Wari Udom - Nam Yuen - Nam Yun 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 Si Wichian Named natural and historic features inside Si Wichian, from the GeoNames gazetteer. ### Water 4 reservoirs and tanks; 3 rivers and streams. - Ang Kep Nam Huai Bon - Ang Kep Nam Huai Chiang Kaeo - Ang Kep Nam Huai Pong - Ang Kep Nam Huai Wang Yai - Huai Pong - Huai Saeng - Huai Ta Daeng ### Hills and mountains 2 mountains; 1 hill. - Phu Mot Mon · 375 m - Phu Ta Mun · 346 m - Phu Phalan Nokyung · 230 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 Si Wichian and the best time to visit Using the climate of Nam Yuen, the warmest month is Apr (average 31 °C) and the coolest is Dec (25 °C). About 1,447 mm of rain falls in a year; the wettest month is Sep (289 mm) and the driest Jan (5 mm). The most comfortable months for a visit are **October to January**. - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec Month Average °C Rain mm Jan 26 5 Feb 28 6 Mar 30 31 Apr 31 71 May 29 164 Jun 27 191 Jul 26 277 Aug 26 278 Sep 26 289 Oct 26 107 Nov 25 21 Dec 25 7 Source: [NASA POWER climatology, retrieved 2026-10-29](https://power.larc.nasa.gov/). ## Nearest hospital, bank and fuel from Si Wichian Need Nearest mapped Distance Hospital ห้องพิเศษโรงพยาบาลน้ำยืน · Si Wichian 4.7 km [Map](https://www.openstreetmap.org/?mlat=14.47861&mlon=104.98583#map=17/14.47861/104.98583) Bank ธนาคารออมสิน สาขาน้ำยืน · Si Wichian 4.6 km [Map](https://www.openstreetmap.org/?mlat=14.48603&mlon=105.01124#map=17/14.48603/105.01124) Petrol pump PTT · Si Wichian 4.7 km [Map](https://www.openstreetmap.org/?mlat=14.48033&mlon=104.98690#map=17/14.48033/104.98690) Hotel อิ่มสุขresort&restaurant · Song 4.1 km [Map](https://www.openstreetmap.org/?mlat=14.46972&mlon=104.98252#map=17/14.46972/104.98252) Mall บิ๊กซีน้ำยืน · Si Wichian 5.4 km [Map](https://www.openstreetmap.org/?mlat=14.49309&mlon=105.01748#map=17/14.49309/105.01748) School ศูนย์พัฒนาเด็กก่อนเกณฑ์ · Si Wichian 5.2 km [Map](https://www.openstreetmap.org/?mlat=14.49003&mlon=104.99992#map=17/14.49003/104.99992) College วิทยาลัยเทคโนโลยีศรีสะเกษบริหารธุรกิจ · Si Wichian 4.7 km [Map](https://www.openstreetmap.org/?mlat=14.48730&mlon=105.01261#map=17/14.48730/105.01261) Police station สถานีตำรวจภูธรน้ำยืน · Si Wichian 5.3 km [Map](https://www.openstreetmap.org/?mlat=14.49113&mlon=105.00067#map=17/14.49113/105.00067) 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 Si Wichian Places mapped inside Si Wichian in open map data, by type. - Hospitals10 - Banks2 - Petrol pumps5 - Hotels15 - Shopping malls2 - Schools4 - Colleges and universities1 - Pharmacies2 - Restaurants47 - Police stations1 - Dental clinics2 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 Nam Yuen - Bu Pueai - Dom Pradit - Kao Kham - Song - Yang - Yang Yai ## Quick answers - Where is Si Wichian?In Nam Yuen, Ubon Ratchathani Province, Thailand - What borders Si Wichian?Bu Pueai, Dom Pradit and Song - How many villages are in Si Wichian?21 named settlements (GeoNames, OpenStreetMap) - What is the elevation of Si Wichian?Settlements lie between 172 m and 207 m - How many reservoirs and tanks are in Si Wichian?4 named in GeoNames - What is the highest point in Si Wichian?Phu Mot Mon (375 m, GeoNames elevation model) - What is the best time to visit Si Wichian?October to January - Where is the nearest hospital to Si Wichian?ห้องพิเศษโรงพยาบาลน้ำยืน, about 4.7 km from the centre - Where is the nearest bank to Si Wichian?ธนาคารออมสิน สาขาน้ำยืน, about 4.6 km from the centre - Where is the nearest petrol pump to Si Wichian?PTT, about 4.7 km from the centre - How many hospitals are in Si Wichian?10 mapped - How many banks are in Si Wichian?2 mapped - How many petrol pumps are in Si Wichian?5 mapped - What is the P-code of Si Wichian?TH340907 (OCHA common operational dataset)