# Sema Yai Subdistrict, Bua Yai, Nakhon Ratchasima Province > Source: https://wherepedia.org/thailand/nakhon-ratchasima/bua-yai/sema-yai/ Subdistrict · Bua Yai # Sema Yai Sema Yai is a subdistrict (tambon) of Thailand in Bua Yai, Nakhon Ratchasima Province. It covers **39.5 km²**. 14 named villages and localities are recorded here, and 8 mapped services such as hospitals, banks and schools. - 39.5km² - 8mapped services - 167 mtypical elevation ## Where is Sema Yai? Sema Yai lies in [Bua Yai](https://wherepedia.org/thailand/nakhon-ratchasima/bua-yai/), [Nakhon Ratchasima Province](https://wherepedia.org/thailand/nakhon-ratchasima/), [Thailand](https://wherepedia.org/thailand/). It borders 6 other subdistricts: [Bua Yai](https://wherepedia.org/thailand/nakhon-ratchasima/bua-yai/bua-yai/), [Don Tanin](https://wherepedia.org/thailand/nakhon-ratchasima/bua-yai/don-tanin/), [Khu Khat](https://wherepedia.org/thailand/nakhon-ratchasima/khong/khu-khat/), [Kut Chok](https://wherepedia.org/thailand/nakhon-ratchasima/bua-yai/kut-chok/), [Non Pradu](https://wherepedia.org/thailand/nakhon-ratchasima/sida/non-pradu/) and [Non Thong Lang](https://wherepedia.org/thailand/nakhon-ratchasima/bua-yai/non-thong-lang/). By area it is the 4178th largest of 7,425 subdistricts in Thailand. It covers 7.8% of [Bua Yai](https://wherepedia.org/thailand/nakhon-ratchasima/bua-yai/). The centre of Sema Yai is about 285 km in a straight line from Bangkok, the capital. It is about 7.9 km from Bua Yai, the main town of Bua Yai. The centre point is at 15.5143° N, 102.4294° E. Local names: เสมาใหญ่ . 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 Sema Yai Open gazetteers list **14 villages, towns and localities** in Sema Yai. Settlements here lie between about 162 m and 172 m above sea level (median 167 m). - Ban Chaeng Noi - Ban Chaeng Sawang - Ban Chaeng Swang - Ban Don Bok - Ban Hua Nong - Ban Na - Ban Nhong Cheng Noi - Ban Non Si Suk - Ban Non Tio - Ban Non Yai - Ban Nong Hua Chang - Ban Rai Oi - Ban Sema Yai - Ban Yakha 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 Sema Yai Named natural and historic features inside Sema Yai, from the GeoNames gazetteer. ### Water 1 reservoir or tank; 1 river or stream. - Lam Huai Yang - Sa Wat Ban Na 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 Sema Yai and the best time to visit Using the climate of Bua Yai, the warmest month is Apr (average 31 °C) and the coolest is Dec (24 °C). About 1,196 mm of rain falls in a year; the wettest month is Sep (260 mm) and the driest Dec (5 mm). The most comfortable months for a visit are **November to February**. - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec Month Average °C Rain mm Jan 25 10 Feb 28 9 Mar 30 46 Apr 31 79 May 29 152 Jun 28 136 Jul 27 157 Aug 27 202 Sep 26 260 Oct 25 122 Nov 24 19 Dec 24 5 Source: [NASA POWER climatology, retrieved 2026-10-29](https://power.larc.nasa.gov/). ## Nearest hospital, bank and fuel from Sema Yai Need Nearest mapped Distance Hospital โรงพยาบาลส่งเสริมสุขภาพตำบลหนองแจ้งน้อย · Sema Yai 1.5 km [Map](https://www.openstreetmap.org/?mlat=15.50268&mlon=102.43577#map=17/15.50268/102.43577) Bank ธนาคารกรุงไทย สาขาบัวใหญ่ · Bua Yai 8.2 km [Map](https://www.openstreetmap.org/?mlat=15.58774&mlon=102.42534#map=17/15.58774/102.42534) ATM Amazon ปั๊ม ปตท. สีดา จ.ขอนแก่น · Phon Thong 11 km [Map](https://www.openstreetmap.org/?mlat=15.49716&mlon=102.52726#map=17/15.49716/102.52726) Petrol pump ปตท. · Bua Yai 6.9 km [Map](https://www.openstreetmap.org/?mlat=15.57637&mlon=102.42229#map=17/15.57637/102.42229) Hotel เอเจ รีสอร์ท · Sema Yai 3.2 km [Map](https://www.openstreetmap.org/?mlat=15.52754&mlon=102.45580#map=17/15.52754/102.45580) Mall มิลค์กะมอสบัวใหญ่ · Bua Yai 8.0 km [Map](https://www.openstreetmap.org/?mlat=15.58636&mlon=102.42667#map=17/15.58636/102.42667) School โรงเรียนบ้านโคกน้อย · Sema Yai 2.2 km [Map](https://www.openstreetmap.org/?mlat=15.49861&mlon=102.41721#map=17/15.49861/102.41721) College วิทยาลัยการอาชีพบัวใหญ่ · Nong Chaeng Yai 5.7 km [Map](https://www.openstreetmap.org/?mlat=15.55943&mlon=102.40474#map=17/15.55943/102.40474) Police station สภ.บัวใหญ่ · Bua Yai 7.7 km [Map](https://www.openstreetmap.org/?mlat=15.58331&mlon=102.42253#map=17/15.58331/102.42253) 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 Sema Yai Places mapped inside Sema Yai in open map data, by type. - Hospitals4 - Hotels1 - Schools1 - Restaurants2 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 Bua Yai - Bua Yai - Dan Chang - Don Tanin - Huai Yang - Khun Thong - Kut Chok - Non Thong Lang - Nong Bua Sa-At - Nong Chaeng Yai ## Quick answers - Where is Sema Yai?In Bua Yai, Nakhon Ratchasima Province, Thailand - What borders Sema Yai?Bua Yai, Don Tanin, Khu Khat, Kut Chok, Non Pradu and Non Thong Lang - How many villages are in Sema Yai?14 named settlements (GeoNames, OpenStreetMap) - What is the elevation of Sema Yai?Settlements lie between 162 m and 172 m - How many reservoirs and tanks are in Sema Yai?1 named in GeoNames - What is the best time to visit Sema Yai?November to February - Where is the nearest hospital to Sema Yai?โรงพยาบาลส่งเสริมสุขภาพตำบลหนองแจ้งน้อย, about 1.5 km from the centre - Where is the nearest bank to Sema Yai?ธนาคารกรุงไทย สาขาบัวใหญ่, about 8.2 km from the centre - Where is the nearest ATM to Sema Yai?Amazon ปั๊ม ปตท. สีดา จ.ขอนแก่น, about 11 km from the centre - Where is the nearest petrol pump to Sema Yai?ปตท., about 6.9 km from the centre - How many hospitals are in Sema Yai?4 mapped - What is the P-code of Sema Yai?TH301204 (OCHA common operational dataset)