# Huai Sai Subdistrict, Mueang Prachuap Khiri Khan – Villages > Source: https://wherepedia.org/thailand/prachuap-khiri-khan/mueang-prachuap-khiri-khan/huai-sai/ Subdistrict · Mueang Prachuap Khiri Khan # Huai Sai Huai Sai is a subdistrict (tambon) of Thailand in Mueang Prachuap Khiri Khan, Prachuap Khiri Khan Province. It covers **114.8 km²**. 28 named villages and localities are recorded here, and 29 mapped services such as hospitals, banks and schools. - 115km² - 29mapped services - 76 mtypical elevation ## Where is Huai Sai? Huai Sai lies in [Mueang Prachuap Khiri Khan](https://wherepedia.org/thailand/prachuap-khiri-khan/mueang-prachuap-khiri-khan/), [Prachuap Khiri Khan Province](https://wherepedia.org/thailand/prachuap-khiri-khan/), [Thailand](https://wherepedia.org/thailand/). It borders 2 other subdistricts: [Huai Yang](https://wherepedia.org/thailand/prachuap-khiri-khan/thap-sakae/huai-yang/) and [Khlong Wan](https://wherepedia.org/thailand/prachuap-khiri-khan/mueang-prachuap-khiri-khan/khlong-wan/). By area it is the 1022nd largest of 7,425 subdistricts in Thailand. It covers 13.6% of [Mueang Prachuap Khiri Khan](https://wherepedia.org/thailand/prachuap-khiri-khan/mueang-prachuap-khiri-khan/). The centre of Huai Sai is about 244 km in a straight line from Bangkok, the capital. It is about 16 km from Prachuap Khiri Khan, the main town of Mueang Prachuap Khiri Khan. The centre point is at 11.7126° N, 99.6813° E. Local names: ห้วยทราย . Source: [Royal Thai Survey Department via OCHA HDX, administrative boundaries (COD-AB, CC BY-IGO)](https://data.humdata.org/dataset/cod-ab-tha). ## Things to see in and around Huai Sai OpenStreetMap lists 2 named sights in Huai Sai: 1 attraction; 1 beach. - Point Maka Bay · beach - Lemon Bay · attraction ### Nearby, outside Huai Sai - Hatwanakon National Park · nature reserve, Huai Yang6.8 km - Hat Wanakon National Park · national park, Huai Yang7.2 km - Engineering Science Park at Wa Ko · attraction, Khlong Wan8.0 km - King Mongkutkao Monument · memorial, Khlong Wan8.3 km - อุทยานวิทยาศาสตร์พระจอมเกล้า ณ หว้ากอ · memorial, Khlong Wan8.5 km - Waghor Aquarium · aquarium, Khlong Wan8.6 km - Wanakon Beach · beach, Huai Yang8.6 km - Nice cycling route · viewpoint, Huai Yang8.7 km - The narrowest part of Thailand · monument, Khlong Wan8.9 km - อุทยานเขาหินเทิน Mueang Prachuap Khiri Khan District Prachuap Khiri Khan Nationaal park · nature reserve, Ko Lak9.3 km - Hanging Rocks · viewpoint, Ko Lak9.5 km - Thung Lak Met · nature reserve, Khlong Wan9.5 km Source: [© OpenStreetMap contributors (ODbL), Geofabrik extract — named settlements](https://www.openstreetmap.org/copyright). Named attractions, museums, viewpoints, historic sites and natural features mapped in OpenStreetMap. Places of worship are not listed. ## Know before you go: Huai Sai - Time zoneUTC+7, no daylight saving · Asia/Bangkok - CurrencyBaht (THB) - Country calling code+66 - LanguagesThai, English - Plug typesType A, B, C, F · 220 V - Driving sideLeft - Postcode format5 digits (#####) ### Nearest airports - Hua Hin Airport (HHQ) · Hua Hin107 km - Chumphon Airport (CJM) · Chumphon117 km ### Nearest railway station Wang Duan (Huai Sai), about 5.2 km from the centre. ### Daylight Days are longest in Jun (about 12.8 hours, sunrise around 05:57) and shortest in Dec (about 11.4 hours, sunrise around 06:33, sunset around 17:59). Source: [GeoNames country and time-zone files (CC BY 4.0)](https://www.geonames.org/); [Wikidata (CC0) — plug types, mains voltage, driving side; retrieved 2026-11-02](https://www.wikidata.org/); [OurAirports (public domain)](https://ourairports.com/data/). Airports with scheduled passenger flights; straight-line distances. Daylight is calculated for the 15th of each month in local standard time. Check entry and visa rules with official government sources before travelling. ## Villages and localities in Huai Sai Open gazetteers list **28 villages, towns and localities** in Huai Sai. Settlements here lie between about 9 m and 144 m above sea level (median 76 m). - Ban Hua Ko - Ban Huai Nam Chon Phatthana - Ban Huai Nam Phu - Ban Huai Sai - Ban Huai Yai - Ban Hup Phai - Ban Hup Phueng - Ban Ket Khu - Ban Khao Mai Ruak - Ban Khao Noi - Ban Khok Chang - Ban Lan Sai - Ban Na Khlong - Ban Nong Chap Kai - Ban Nong Kham - Ban Nong Na - Ban Nong Phrom - Ban Nong Pla Lai - Ban Nong Wai - Ban Phu Mak - Ban Pong Kaphrao - Ban Pong Ket - Ban Saen Tawa - Ban Song Kalon - Ban Tha Phung - Ban Ton Ket - Ban Wang Duan - Ban Wang Maduea 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 Huai Sai Named natural and historic features inside Huai Sai, from the GeoNames gazetteer. ### Water 4 reservoirs and tanks. - Ang Kep Nam Huai Nam Chon - Ang Kep Nam Huai Sai - Ang Kep Nam Huai Yai - Ang Kep Nam Khlong Wa Thon ### Hills and mountains 2 hills; 1 mountain. - Khao Hup Phueng · 414 m - Khao Mai Ruak · 306 m - Khao Noi · 143 m ### Getting around 1 railway station. - Sathani Rotfai Wang Duan 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 Huai Sai and the best time to visit Using the climate of Mueang Prachuap Khiri Khan, the warmest month is Apr (average 29 °C) and the coolest is Jan (26 °C). About 1,714 mm of rain falls in a year; the wettest month is Oct (266 mm) and the driest Feb (19 mm). The most comfortable months for a visit are **December to March**. - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec Month Average °C Rain mm Jan 26 50 Feb 27 19 Mar 28 72 Apr 29 78 May 29 184 Jun 28 210 Jul 27 230 Aug 27 204 Sep 27 230 Oct 27 266 Nov 27 125 Dec 26 46 Source: [NASA POWER climatology, retrieved 2026-10-29](https://power.larc.nasa.gov/). ## Nearest hospital, bank and fuel from Huai Sai Need Nearest mapped Distance Hospital อนามัยบ้านวังมะเดื่อ · Huai Sai 2.4 km [Map](https://www.openstreetmap.org/?mlat=11.69990&mlon=99.66383#map=17/11.69990/99.66383) Bank ธนาคารกรุงเทพ สาขาคลองวาฬ · Khlong Wan 8.9 km [Map](https://www.openstreetmap.org/?mlat=11.72173&mlon=99.76258#map=17/11.72173/99.76258) ATM TMBThanachart Bank · Prachuap Khiri Khan 17 km [Map](https://www.openstreetmap.org/?mlat=11.81247&mlon=99.79697#map=17/11.81247/99.79697) Petrol pump PTT · Huai Sai 3.9 km [Map](https://www.openstreetmap.org/?mlat=11.71031&mlon=99.71696#map=17/11.71031/99.71696) Hotel ค่ายลูกเสือลักษมีกานต์แคมป์&รีสอร์ท · Huai Sai 1.2 km [Map](https://www.openstreetmap.org/?mlat=11.71309&mlon=99.69252#map=17/11.71309/99.69252) Mall Sakhon Mini Mall · Khlong Wan 11 km [Map](https://www.openstreetmap.org/?mlat=11.73969&mlon=99.78191#map=17/11.73969/99.78191) School โรงเรียนเศรษฐพานิชวิทยา. · Huai Sai 1.8 km [Map](https://www.openstreetmap.org/?mlat=11.71128&mlon=99.66473#map=17/11.71128/99.66473) College โรงเรียนประชาพิทักษ์ · Huai Yang 8.9 km [Map](https://www.openstreetmap.org/?mlat=11.64026&mlon=99.64652#map=17/11.64026/99.64652) Police station กองร้อยตำรวจตระเวนชายแดนที่ 146 · Khlong Wan 7.2 km [Map](https://www.openstreetmap.org/?mlat=11.77664&mlon=99.69114#map=17/11.77664/99.69114) 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 Huai Sai Places mapped inside Huai Sai in open map data, by type. - Hospitals4 - Petrol pumps5 - Hotels4 - Schools4 - Restaurants12 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 Mueang Prachuap Khiri Khan - Ao Noi - Bo Nok - Khlong Wan - Ko Lak - Prachuap Khiri Khan ## Quick answers - Where is Huai Sai?In Mueang Prachuap Khiri Khan, Prachuap Khiri Khan Province, Thailand - What borders Huai Sai?Huai Yang and Khlong Wan - What is there to see in Huai Sai?Lemon Bay, Point Maka Bay - What time zone is Huai Sai in?UTC+7 - What currency is used in Huai Sai?Baht (THB) - What language is spoken in Huai Sai?Thai, English (main languages nationally) - How many villages are in Huai Sai?28 named settlements (GeoNames, OpenStreetMap) - What is the elevation of Huai Sai?Settlements lie between 9 m and 144 m - How many reservoirs and tanks are in Huai Sai?4 named in GeoNames - What is the highest point in Huai Sai?Khao Hup Phueng (414 m, GeoNames elevation model) - What is the best time to visit Huai Sai?December to March - Where is the nearest hospital to Huai Sai?อนามัยบ้านวังมะเดื่อ, about 2.4 km from the centre - Where is the nearest bank to Huai Sai?ธนาคารกรุงเทพ สาขาคลองวาฬ, about 8.9 km from the centre - Where is the nearest ATM to Huai Sai?TMBThanachart Bank, about 17 km from the centre - Where is the nearest petrol pump to Huai Sai?PTT, about 3.9 km from the centre - How many hospitals are in Huai Sai?4 mapped - How many petrol pumps are in Huai Sai?5 mapped - What is the P-code of Huai Sai?TH770104 (OCHA common operational dataset)