# Lum Sum Subdistrict, Sai Yok, Kanchanaburi Province – Villages > Source: https://wherepedia.org/thailand/kanchanaburi/sai-yok/lum-sum/ Subdistrict · Sai Yok # Lum Sum Lum Sum is a subdistrict (tambon) of Thailand in Sai Yok, Kanchanaburi Province. It covers **156.3 km²**. 19 named villages and localities are recorded here, and 96 mapped services such as hospitals, banks and schools. - 156km² - 96mapped services - 78 mtypical elevation ## Where is Lum Sum? Lum Sum lies in [Sai Yok](https://wherepedia.org/thailand/kanchanaburi/sai-yok/), [Kanchanaburi Province](https://wherepedia.org/thailand/kanchanaburi/), [Thailand](https://wherepedia.org/thailand/). It borders 7 other subdistricts: [Bong Ti](https://wherepedia.org/thailand/kanchanaburi/sai-yok/bong-ti/), [Chong Sadao](https://wherepedia.org/thailand/kanchanaburi/mueang-kanchanaburi/chong-sadao/), [Si Mongkhon](https://wherepedia.org/thailand/kanchanaburi/sai-yok/si-mongkhon/), [Sing](https://wherepedia.org/thailand/kanchanaburi/sai-yok/sing/), [Tha Sao](https://wherepedia.org/thailand/kanchanaburi/sai-yok/tha-sao/), [Wang Dong](https://wherepedia.org/thailand/kanchanaburi/mueang-kanchanaburi/wang-dong/) and [Wang Krachae](https://wherepedia.org/thailand/kanchanaburi/sai-yok/wang-krachae/). By area it is the 620th largest of 7,425 subdistricts in Thailand. It covers 6.0% of [Sai Yok](https://wherepedia.org/thailand/kanchanaburi/sai-yok/). The centre of Lum Sum is about 155 km in a straight line from Bangkok, the capital. It is about 2.9 km from Sai Yok, the main town of Sai Yok. The centre point is at 14.1158° N, 99.1152° E. Local names: ลุ่มสุ่ม . 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 Lum Sum Open gazetteers list **19 villages, towns and localities** in Lum Sum. Settlements here lie between about 49 m and 504 m above sea level (median 78 m). - Ban Ai Hit - Ban Chong Ai Kang - Ban Lum Pheung - Ban Lum Phueng - Ban Lum Sum - Ban Nong Kae - Ban Nong Khon - Ban Nong Pet - Ban Phu Noi - Ban Phu Tao - Ban Sai Thong - Ban Samakkhitham - Ban Seritham - Ban Tham Krasae - Ban Thung Yao - Ban Trai Rat - Ban Wang Pho - Sai Yok - Wang Pho 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 Lum Sum Named natural and historic features inside Lum Sum, from the GeoNames gazetteer. ### Water 3 reservoirs and tanks. - Ang Kep Nam Ban Sai Thong - Ang Kep Nam Ban Samakkhi Tham - Sa Nam Ban Phu Noi ### Hills and mountains 7 mountains; 4 hills. - Khao Chang Phi · 739 m - Khao Pak Nokkaeo · 674 m - Khao Chang Phom · 421 m - Khao Takhaeng · 380 m - Khao Thung Ta Khlong · 371 m - Khao Plueak Nun · 335 m - Khao Pa Ham · 303 m - Khao Ai Hueat · 194 m - Khao Nom · 173 m - Khao Laem · 161 m - Khao Huai Yang · 104 m ### Getting around 3 railway stations. - Sathani Rotfai Lum Sum - Sathani Rotfai Tham Krasae - Sathani Rotfai Wang Pho 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 Lum Sum and the best time to visit Using the climate of Sai Yok, the warmest month is Apr (average 27 °C) and the coolest is Dec (22 °C). About 1,270 mm of rain falls in a year; the wettest month is Sep (229 mm) and the driest Dec (7 mm). The most comfortable months for a visit are **November to April**. - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec Month Average °C Rain mm Jan 23 11 Feb 25 11 Mar 26 46 Apr 27 64 May 26 152 Jun 25 153 Jul 24 181 Aug 24 170 Sep 24 229 Oct 24 205 Nov 23 42 Dec 22 7 Source: [NASA POWER climatology, retrieved 2026-10-29](https://power.larc.nasa.gov/). ## Nearest hospital, bank and fuel from Lum Sum Need Nearest mapped Distance Hospital โรงพยาบาลสมเด็จพระปิยมหาราชรมณียเขต · Lum Sum 2.4 km [Map](https://www.openstreetmap.org/?mlat=14.11690&mlon=99.13750#map=17/14.11690/99.13750) Bank ธนาคารกรุงไทย สาขาไทรโยค · Tha Sao 14 km [Map](https://www.openstreetmap.org/?mlat=14.22987&mlon=99.06456#map=17/14.22987/99.06456) ATM ซ.8เจ้าขุนเณร · Lat Ya 34 km [Map](https://www.openstreetmap.org/?mlat=14.11389&mlon=99.43148#map=17/14.11389/99.43148) Petrol pump PT Station · Tha Sao 7.2 km [Map](https://www.openstreetmap.org/?mlat=14.17934&mlon=99.12633#map=17/14.17934/99.12633) Hotel บ้านปอลดา จ.กาญจนบุรี · Lum Sum 0.7 km [Map](https://www.openstreetmap.org/?mlat=14.11003&mlon=99.11711#map=17/14.11003/99.11711) Mall CJ Express สาขามณีกาญจน์ มหานครวังโพธิ์ · Lum Sum 3.0 km [Map](https://www.openstreetmap.org/?mlat=14.11858&mlon=99.14287#map=17/14.11858/99.14287) School Lung Kang School · Lum Sum 1.3 km [Map](https://www.openstreetmap.org/?mlat=14.11004&mlon=99.12528#map=17/14.11004/99.12528) College ศูนย์พัฒนาและฝึกอบรมวิมานดิน มหาวิทยาลัยมหิดล กาญจนบุรี · Lum Sum 4.2 km [Map](https://www.openstreetmap.org/?mlat=14.11797&mlon=99.15379#map=17/14.11797/99.15379) Police station Sai Yok Police Station · Lum Sum 3.1 km [Map](https://www.openstreetmap.org/?mlat=14.11599&mlon=99.14409#map=17/14.11599/99.14409) 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 Lum Sum Places mapped inside Lum Sum in open map data, by type. - Hospitals10 - Hotels37 - Shopping malls1 - Schools7 - Colleges and universities8 - Pharmacies1 - Restaurants29 - Police stations2 - Dental clinics1 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 Sai Yok - Bong Ti - Sai Yok - Si Mongkhon - Sing - Tha Sao - Wang Krachae ## Quick answers - Where is Lum Sum?In Sai Yok, Kanchanaburi Province, Thailand - What borders Lum Sum?Bong Ti, Chong Sadao, Si Mongkhon, Sing, Tha Sao, Wang Dong and Wang Krachae - How many villages are in Lum Sum?19 named settlements (GeoNames, OpenStreetMap) - What is the elevation of Lum Sum?Settlements lie between 49 m and 504 m - How many reservoirs and tanks are in Lum Sum?3 named in GeoNames - What is the highest point in Lum Sum?Khao Chang Phi (739 m, GeoNames elevation model) - What is the best time to visit Lum Sum?November to April - Where is the nearest hospital to Lum Sum?โรงพยาบาลสมเด็จพระปิยมหาราชรมณียเขต, about 2.4 km from the centre - Where is the nearest bank to Lum Sum?ธนาคารกรุงไทย สาขาไทรโยค, about 14 km from the centre - Where is the nearest ATM to Lum Sum?ซ.8เจ้าขุนเณร, about 34 km from the centre - Where is the nearest petrol pump to Lum Sum?PT Station, about 7.2 km from the centre - How many hospitals are in Lum Sum?10 mapped - What is the P-code of Lum Sum?TH710201 (OCHA common operational dataset)