Wiang Sa is a city of approximately 11,900 people in Surat Thani, Thailand. Located in the Indochina time zone at 8.6°N latitude.
In 2025, Wiang Sa recorded an average annual temperature of 79°F. The hottest temperatures reached 98°F in March; the coolest were 66°F in December. Total precipitation for the year was 110 inches, with the wettest month being May.
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