Geography & Climate

Loei is 520 km north of Bangkok. It occupies 11,426 sq km and borders Laos, the Mekong River and Nam Hueng Waterway to the north, Khon Kaen and Phetchaboon province to the south, Nong Khai, Nongbua Lamphu and Khon Kaen province to the east and Pitsanulok province to the west.

There are three distinct geographical areas in the province. Mountainous areas dominate the west of Loei around Nahaew, Phu Rua, Dansai and Tali districts. The population here is sparse because of the small areas for cultivation, and the terrain makes communication inconvenient.

The low plains area covers the Mekong river. Loei River, a branch of the Mekong, runs through Muang Loei, Chiankhan and Wand Saphung districts. These areas are most suitable for cultivation and have the highest population density in Loei province.

There are fertile areas at the foot of the mountains east and south of Loei city near Phukra Dueng, Phu Luang, Phu Kao, Naduang and Pakchom. These are cultivated and settled by Loei people as well. 

Since Loei is encompassed by a mountain range, in the hot season the temperature reaches 43.3 °C (around April). Conversely, in the cold season (around December) the temperature can dip to minus 1.3 °C at night. The average temperature during 1993 to 1998 was 25.1 to 26.7°C.

During 1993 to 1998 the maximum amount of rain, measured in 1995, was 1420.1 mm (136 days of rain) and the minimum, measured in 1993, was 1,269 mm (109 days).

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