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Climate almanac

Ko Samui

Surat Thani, TH · 9.54°, 99.94°

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What is the climate like in Ko Samui?

Ko Samui is warmest in May, when daily highs average 85°F (30°C), and coolest in January, when lows fall to about 79°F (26°C). The wettest month is typically November and the driest is March; the year sees roughly 67 in of precipitation.

  • Warmest monthMay — average high 85°F (30°C)
  • Coolest monthJanuary — average low 79°F (26°C)
  • Wettest monthNovember (13 in)
  • Driest monthMarch (1.6 in)
  • Annual precipitation67 in