# Nong Ya Sai Subdistrict, Wang Sam Mo, Udon Thani Province > Source: https://wherepedia.org/thailand/udon-thani/wang-sam-mo/nong-ya-sai/ Subdistrict · Wang Sam Mo # Nong Ya Sai Nong Ya Sai is a subdistrict (tambon) of Thailand in Wang Sam Mo, Udon Thani Province. It covers **78.0 km²**. 8 named villages and localities are recorded here, and 10 mapped services such as hospitals, banks and schools. - 78.0km² - 10mapped services - 188 mtypical elevation ## Where is Nong Ya Sai? Nong Ya Sai lies in [Wang Sam Mo](https://wherepedia.org/thailand/udon-thani/wang-sam-mo/), [Udon Thani Province](https://wherepedia.org/thailand/udon-thani/), [Thailand](https://wherepedia.org/thailand/). It borders 8 other subdistricts: [Bayao](https://wherepedia.org/thailand/udon-thani/wang-sam-mo/bayao/), [Dong Sombun](https://wherepedia.org/thailand/kalasin/tha-khantho/dong-sombun/), [Kham Khok Sung](https://wherepedia.org/thailand/udon-thani/wang-sam-mo/kham-khok-sung/), [Na Yung](https://wherepedia.org/thailand/udon-thani/si-that/na-yung/), [Nong Kung Thap Ma](https://wherepedia.org/thailand/udon-thani/wang-sam-mo/nong-kung-thap-ma/), [Nong Nok Khian](https://wherepedia.org/thailand/udon-thani/si-that/nong-nok-khian/), [Wang Sam Mo](https://wherepedia.org/thailand/udon-thani/wang-sam-mo/wang-sam-mo/) and [Yang Um](https://wherepedia.org/thailand/kalasin/tha-khantho/yang-um/). By area it is the 1901st largest of 7,425 subdistricts in Thailand. It covers 10.4% of [Wang Sam Mo](https://wherepedia.org/thailand/udon-thani/wang-sam-mo/). The centre of Nong Ya Sai is about 471 km in a straight line from Bangkok, the capital. It is about 7.0 km from Wang Sam Mo, the main town of Wang Sam Mo. The centre point is at 16.9606° N, 103.3715° E. Local names: หนองหญ้าไซ . 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 Nong Ya Sai Open gazetteers list **8 villages, towns and localities** in Nong Ya Sai. Settlements here lie between about 176 m and 197 m above sea level (median 188 m). - Ban Khok Sa-at - Ban Loeng Thon - Ban Non Sombun - Ban Nong Phai - Ban Nong Ya Sai - Ban Pho Ngam - Ban Phon Charoen - Ban Sai 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 Nong Ya Sai Named natural and historic features inside Nong Ya Sai, from the GeoNames gazetteer. ### Water 3 rivers and streams. - Huai Lat Kaeo - Huai Pong Khae - Huai Yang 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 Nong Ya Sai and the best time to visit Using the climate of Wang Sam Mo, the warmest month is Apr (average 31 °C) and the coolest is Dec (21 °C). About 1,434 mm of rain falls in a year; the wettest month is Aug (287 mm) and the driest Dec (5 mm). The most comfortable months for a visit are **October to February**. - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec Month Average °C Rain mm Jan 22 7 Feb 26 18 Mar 29 44 Apr 31 80 May 29 191 Jun 27 197 Jul 27 245 Aug 26 287 Sep 26 244 Oct 25 100 Nov 23 17 Dec 21 5 Source: [NASA POWER climatology, retrieved 2026-10-29](https://power.larc.nasa.gov/). ## Nearest hospital, bank and fuel from Nong Ya Sai Need Nearest mapped Distance Hospital โรงพยาบาลส่งเสริมสุขภาพตำบลบ้านหนองหญ้าไซ · Nong Ya Sai 4.1 km [Map](https://www.openstreetmap.org/?mlat=16.95416&mlon=103.33369#map=17/16.95416/103.33369) Bank ธนาคารออมสิน สาขาวังสามหมอ · Wang Sam Mo 6.9 km [Map](https://www.openstreetmap.org/?mlat=16.94960&mlon=103.43536#map=17/16.94960/103.43536) ATM ธกส.ศรีธาตุ · Si That 17 km [Map](https://www.openstreetmap.org/?mlat=16.97462&mlon=103.21034#map=17/16.97462/103.21034) Petrol pump ปตท. · Wang Sam Mo 5.3 km [Map](https://www.openstreetmap.org/?mlat=16.94828&mlon=103.42009#map=17/16.94828/103.42009) Hotel เกี่ยวก้อยรีสอร์ท2 · Nong Ya Sai 1.8 km [Map](https://www.openstreetmap.org/?mlat=16.94620&mlon=103.37985#map=17/16.94620/103.37985) Mall ก.แฮปปี้โฟน · Si That 17 km [Map](https://www.openstreetmap.org/?mlat=16.97461&mlon=103.21588#map=17/16.97461/103.21588) School ศูนย์พัฒนาเด็กเล็กบ้านหนองหญ้าไซ · Nong Ya Sai 3.8 km [Map](https://www.openstreetmap.org/?mlat=16.95332&mlon=103.33627#map=17/16.95332/103.33627) College ศูนย์การศึกษานอกระบบและการศึกษาตามอัธยาศัยอำเภอวังสามหมอ · Wang Sam Mo 6.3 km [Map](https://www.openstreetmap.org/?mlat=16.94955&mlon=103.43005#map=17/16.94955/103.43005) Police station Wang Sam Mo Police Station · Wang Sam Mo 6.0 km [Map](https://www.openstreetmap.org/?mlat=16.94962&mlon=103.42711#map=17/16.94962/103.42711) 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 Nong Ya Sai Places mapped inside Nong Ya Sai in open map data, by type. - Hospitals1 - Hotels3 - Schools2 - Restaurants4 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 Wang Sam Mo - Bayao - Kham Khok Sung - Nong Kung Thap Ma - Pha Suk - Wang Sam Mo ## Quick answers - Where is Nong Ya Sai?In Wang Sam Mo, Udon Thani Province, Thailand - What borders Nong Ya Sai?Bayao, Dong Sombun, Kham Khok Sung, Na Yung, Nong Kung Thap Ma, Nong Nok Khian, Wang Sam Mo and Yang Um - How many villages are in Nong Ya Sai?8 named settlements (GeoNames, OpenStreetMap) - What is the elevation of Nong Ya Sai?Settlements lie between 176 m and 197 m - What is the best time to visit Nong Ya Sai?October to February - Where is the nearest hospital to Nong Ya Sai?โรงพยาบาลส่งเสริมสุขภาพตำบลบ้านหนองหญ้าไซ, about 4.1 km from the centre - Where is the nearest bank to Nong Ya Sai?ธนาคารออมสิน สาขาวังสามหมอ, about 6.9 km from the centre - Where is the nearest ATM to Nong Ya Sai?ธกส.ศรีธาตุ, about 17 km from the centre - Where is the nearest petrol pump to Nong Ya Sai?ปตท., about 5.3 km from the centre - How many hospitals are in Nong Ya Sai?1 mapped - What is the P-code of Nong Ya Sai?TH411002 (OCHA common operational dataset)