# Si Thoi Subdistrict, Mae Chai, Phayao Province – Villages > Source: https://wherepedia.org/thailand/phayao/mae-chai/si-thoi/ Subdistrict · Mae Chai # Si Thoi Si Thoi is a subdistrict (tambon) of Thailand in Mae Chai, Phayao Province. It covers **69.7 km²**. 18 named villages and localities are recorded here, and 25 mapped services such as hospitals, banks and schools. - 69.7km² - 25mapped services - 416 mtypical elevation ## Where is Si Thoi? Si Thoi lies in [Mae Chai](https://wherepedia.org/thailand/phayao/mae-chai/), [Phayao Province](https://wherepedia.org/thailand/phayao/), [Thailand](https://wherepedia.org/thailand/). It borders 6 other subdistricts: [Ban Lao](https://wherepedia.org/thailand/phayao/mae-chai/ban-lao/), [Charoen Rat](https://wherepedia.org/thailand/phayao/mae-chai/charoen-rat/), [Mae Chai](https://wherepedia.org/thailand/phayao/mae-chai/mae-chai/), [Mae Suk](https://wherepedia.org/thailand/phayao/mae-chai/mae-suk/), [Pa Hung](https://wherepedia.org/thailand/chiang-rai/phan/pa-hung/) and [Wang Kaeo](https://wherepedia.org/thailand/lampang/wang-nuea/wang-kaeo/). By area it is the 2230th largest of 7,425 subdistricts in Thailand. It covers 23.6% of [Mae Chai](https://wherepedia.org/thailand/phayao/mae-chai/). The centre of Si Thoi is about 629 km in a straight line from Bangkok, the capital. It is about 6.4 km from Mae Chai, the main town of Mae Chai. The centre point is at 19.3639° N, 99.7563° E. Local names: ศรีถ้อย . 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 Thoi Open gazetteers list **18 villages, towns and localities** in Si Thoi. Settlements here lie between about 406 m and 1,064 m above sea level (median 416 m). - Ban Khai - Ban Khok Mu - Ban Khua Tat - Ban Mae Chai Hang Ban - Ban Pa Sak - Ban Pa Samakkhi - Ban Pa Santi Suk - Ban Pang Pu Lo - Ban Pha Daeng - Ban Pong Phatthana - Ban San Khwang - Ban Santi Suk - Ban Tha Ton Hat - Ban Thok Cho - Ban Thung Pa Kha - Ban Ton Kae - Ban Ton Phueng - Ban Ton Takhian 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 Thoi Named natural and historic features inside Si Thoi, from the GeoNames gazetteer. ### Water 1 reservoir or tank; 1 river or stream. - Ang Kep Nam Huai Chomphu - Huai Chomphu ### Forests and nature 1 park. - Utthayan Haeng Chat Doi Luang 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 Thoi and the best time to visit Using the climate of Mae Chai, the warmest month is Apr (average 28 °C) and the coolest is Dec (19 °C). About 1,361 mm of rain falls in a year; the wettest month is Aug (283 mm) and the driest Feb (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 20 18 Feb 22 5 Mar 26 29 Apr 28 80 May 27 193 Jun 26 144 Jul 26 231 Aug 25 283 Sep 25 224 Oct 24 106 Nov 22 34 Dec 19 15 Source: [NASA POWER climatology, retrieved 2026-10-29](https://power.larc.nasa.gov/). ## Nearest hospital, bank and fuel from Si Thoi Need Nearest mapped Distance Hospital Mae Chai Hospital · Si Thoi 3.7 km [Map](https://www.openstreetmap.org/?mlat=19.37530&mlon=99.78960#map=17/19.37530/99.78960) Bank ธนาคารออมสิน สาขาแม่ใจ · Mae Chai 6.5 km [Map](https://www.openstreetmap.org/?mlat=19.34465&mlon=99.81493#map=17/19.34465/99.81493) ATM ธนาคารกสิกรไทย · Wiang 26 km [Map](https://www.openstreetmap.org/?mlat=19.36586&mlon=99.50375#map=17/19.36586/99.50375) Petrol pump Bangchak · Si Thoi 4.3 km [Map](https://www.openstreetmap.org/?mlat=19.35999&mlon=99.79685#map=17/19.35999/99.79685) Hotel ที่พัก ม่อนตากหงาย โฮมสเตย์ · Mae Suk 4.3 km [Map](https://www.openstreetmap.org/?mlat=19.32506&mlon=99.75401#map=17/19.32506/99.75401) Mall ร้านสล่าเต๋ · Mae Chai 7.3 km [Map](https://www.openstreetmap.org/?mlat=19.33608&mlon=99.81917#map=17/19.33608/99.81917) School Mae Jai Wittayakom school · Si Thoi 3.5 km [Map](https://www.openstreetmap.org/?mlat=19.37441&mlon=99.78774#map=17/19.37441/99.78774) College มหาลัยพะเยา · Tha Champi 15 km [Map](https://www.openstreetmap.org/?mlat=19.25031&mlon=99.83376#map=17/19.25031/99.83376) Police station Mae Chai district police station(new office) · Charoen Rat 5.4 km [Map](https://www.openstreetmap.org/?mlat=19.41002&mlon=99.77183#map=17/19.41002/99.77183) 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 Thoi Places mapped inside Si Thoi in open map data, by type. - Hospitals5 - Petrol pumps5 - Hotels1 - Schools2 - Restaurants11 - 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 Mae Chai - Ban Lao - Charoen Rat - Mae Chai - Mae Suk - Pa Faek ## Quick answers - Where is Si Thoi?In Mae Chai, Phayao Province, Thailand - What borders Si Thoi?Ban Lao, Charoen Rat, Mae Chai, Mae Suk, Pa Hung and Wang Kaeo - How many villages are in Si Thoi?18 named settlements (GeoNames, OpenStreetMap) - What is the elevation of Si Thoi?Settlements lie between 406 m and 1,064 m - How many reservoirs and tanks are in Si Thoi?1 named in GeoNames - What is the best time to visit Si Thoi?October to March - Where is the nearest hospital to Si Thoi?Mae Chai Hospital, about 3.7 km from the centre - Where is the nearest bank to Si Thoi?ธนาคารออมสิน สาขาแม่ใจ, about 6.5 km from the centre - Where is the nearest ATM to Si Thoi?ธนาคารกสิกรไทย, about 26 km from the centre - Where is the nearest petrol pump to Si Thoi?Bangchak, about 4.3 km from the centre - How many hospitals are in Si Thoi?5 mapped - How many petrol pumps are in Si Thoi?5 mapped - What is the P-code of Si Thoi?TH560702 (OCHA common operational dataset)