# Si Wichai Subdistrict, Wanon Niwat, Sakon Nakhon Province > Source: https://wherepedia.org/thailand/sakon-nakhon/wanon-niwat/si-wichai/ Subdistrict · Wanon Niwat # Si Wichai Si Wichai is a subdistrict (tambon) of Thailand in Wanon Niwat, Sakon Nakhon Province. It covers **101.8 km²**. 17 named villages and localities are recorded here, and 6 mapped services such as hospitals, banks and schools. - 102km² - 6mapped services - 174 mtypical elevation ## Where is Si Wichai? Si Wichai lies in [Wanon Niwat](https://wherepedia.org/thailand/sakon-nakhon/wanon-niwat/), [Sakon Nakhon Province](https://wherepedia.org/thailand/sakon-nakhon/), [Thailand](https://wherepedia.org/thailand/). It borders 8 other subdistricts: [Duea Si Khan Chai](https://wherepedia.org/thailand/sakon-nakhon/wanon-niwat/duea-si-khan-chai/), [Khok Sila](https://wherepedia.org/thailand/sakon-nakhon/charoen-sin/khok-sila/), [Khon Sawan](https://wherepedia.org/thailand/sakon-nakhon/wanon-niwat/khon-sawan/), [Khua Kai](https://wherepedia.org/thailand/sakon-nakhon/wanon-niwat/khua-kai/), [Nong Sanom](https://wherepedia.org/thailand/sakon-nakhon/wanon-niwat/nong-sanom/), [That](https://wherepedia.org/thailand/sakon-nakhon/wanon-niwat/that/), [Waeng](https://wherepedia.org/thailand/sakon-nakhon/sawang-daen-din/waeng/) and [Wanon Niwat](https://wherepedia.org/thailand/sakon-nakhon/wanon-niwat/wanon-niwat/). By area it is the 1263rd largest of 7,425 subdistricts in Thailand. It covers 9.3% of [Wanon Niwat](https://wherepedia.org/thailand/sakon-nakhon/wanon-niwat/). The centre of Si Wichai is about 543 km in a straight line from Bangkok, the capital. It is about 12 km from Wanon Niwat, the main town of Wanon Niwat. The centre point is at 17.5360° N, 103.7159° E. Local names: ศรีวิชัย . 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 Wichai Open gazetteers list **17 villages, towns and localities** in Si Wichai. Settlements here lie between about 157 m and 185 m above sea level (median 174 m). - Ban Don Daeng - Ban Don Muay - Ban Don Sai - Ban Hua Na - Ban Huai Saeng - Ban Kaeng - Ban Keang - Ban Khok Sa-at - Ban Khua Kai - Ban Khua Sung - Ban Khua Sung Noi - Ban Khua Sung Swan - Ban Na Kaset - Ban Non Sawat - Ban Non Udom - Ban Rom Yen Phatthana - Ban Si Wichai 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 Wichai Named natural and historic features inside Si Wichai, from the GeoNames gazetteer. ### Water 5 rivers and streams; 2 reservoirs and tanks. - Ang Kep Nam Huai Hin Ruang - Ang Kep Nam Sok Khum Ngoen - Huai Bong - Huai Hong Hat - Huai Khaen - Huai Kham Bon - Huai Nam Yam 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 Wichai and the best time to visit Using the climate of Wanon Niwat, the warmest month is Apr (average 30 °C) and the coolest is Dec (20 °C). About 1,556 mm of rain falls in a year; the wettest month is Aug (325 mm) and the driest Dec (5 mm). The most comfortable months for a visit are **October to March**. - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec Month Average °C Rain mm Jan 21 7 Feb 24 18 Mar 28 48 Apr 30 76 May 29 202 Jun 27 223 Jul 27 313 Aug 26 325 Sep 26 238 Oct 25 88 Nov 23 14 Dec 20 5 Source: [NASA POWER climatology, retrieved 2026-10-29](https://power.larc.nasa.gov/). ## Nearest hospital, bank and fuel from Si Wichai Need Nearest mapped Distance Hospital โรงพยาบาลส่งเสริมสุขภาพตำบลโนนอุดม · Si Wichai 2.3 km [Map](https://www.openstreetmap.org/?mlat=17.53462&mlon=103.73772#map=17/17.53462/103.73772) Bank ธนาคารไทยเครดิต สาขาสินเชื่อเพื่อรายย่อย วานรนิวาส (สกลนคร) · Khon Sawan 11 km [Map](https://www.openstreetmap.org/?mlat=17.62451&mlon=103.75141#map=17/17.62451/103.75141) ATM AEON · Sawang Daen Din 30 km [Map](https://www.openstreetmap.org/?mlat=17.47044&mlon=103.43945#map=17/17.47044/103.43945) Petrol pump ปั๊มน้ำมัน Pt · Duea Si Khan Chai 4.7 km [Map](https://www.openstreetmap.org/?mlat=17.49646&mlon=103.73106#map=17/17.49646/103.73106) Hotel Ban Tha Chao Hotel · Khon Sawan 6.3 km [Map](https://www.openstreetmap.org/?mlat=17.58983&mlon=103.73344#map=17/17.58983/103.73344) Mall บิ๊กซีพังโคน อ.พังโคน จ.สกลนคร · Phang Khon 16 km [Map](https://www.openstreetmap.org/?mlat=17.39257&mlon=103.70168#map=17/17.39257/103.70168) School โรงเรียนบ้านตาดโตน อ.วานรนิวาส จ.สกลนคร · Nong Sanom 9.4 km [Map](https://www.openstreetmap.org/?mlat=17.52192&mlon=103.80328#map=17/17.52192/103.80328) College วิทยาลัยเทคโนโลยีวานรนิวาส · Khon Sawan 7.8 km [Map](https://www.openstreetmap.org/?mlat=17.60175&mlon=103.74107#map=17/17.60175/103.74107) Police station Srivichai Police Station · Si Wichai 2.2 km [Map](https://www.openstreetmap.org/?mlat=17.53271&mlon=103.73673#map=17/17.53271/103.73673) 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 Wichai Places mapped inside Si Wichai in open map data, by type. - Hospitals2 - Restaurants1 - Police stations3 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 Wanon Niwat - Duea Si Khan Chai - In Plaeng - Khon Sawan - Khu Sakham - Khua Kai - Kut Ruea Kham - Na Kham - Na So - Nong Sanom - Nong Waeng - Nong Waeng Tai - That - Wanon Niwat ## Quick answers - Where is Si Wichai?In Wanon Niwat, Sakon Nakhon Province, Thailand - What borders Si Wichai?Duea Si Khan Chai, Khok Sila, Khon Sawan, Khua Kai, Nong Sanom, That, Waeng and Wanon Niwat - How many villages are in Si Wichai?17 named settlements (GeoNames, OpenStreetMap) - What is the elevation of Si Wichai?Settlements lie between 157 m and 185 m - How many reservoirs and tanks are in Si Wichai?2 named in GeoNames - What is the best time to visit Si Wichai?October to March - Where is the nearest hospital to Si Wichai?โรงพยาบาลส่งเสริมสุขภาพตำบลโนนอุดม, about 2.3 km from the centre - Where is the nearest bank to Si Wichai?ธนาคารไทยเครดิต สาขาสินเชื่อเพื่อรายย่อย วานรนิวาส (สกลนคร), about 11 km from the centre - Where is the nearest ATM to Si Wichai?AEON, about 30 km from the centre - Where is the nearest petrol pump to Si Wichai?ปั๊มน้ำมัน Pt, about 4.7 km from the centre - How many hospitals are in Si Wichai?2 mapped - What is the P-code of Si Wichai?TH470808 (OCHA common operational dataset)