Ko Samui Weather in January
Thailand · 30-year monthly averages
👍 Good time to visit
January in Ko Samui is warm, with average daytime highs around 29°C (84°F) and nighttime lows near 24°C (76°F). Expect roughly 127mm of precipitation spread over about 9 rainy days, and this is one of the wetter months.
Avg high
29°C
84°F
Avg low
24°C
76°F
Rainfall
127mm
rainy
Rainy days
9
days with ≥1mm
🎒 What to pack
- light summer clothing
- sunscreen and sunglasses
- compact umbrella or rain jacket
January vs the rest of the year
FAQ
- How hot is Ko Samui in January?
- January in Ko Samui is warm, with average daytime highs around 29°C (84°F) and nighttime lows near 24°C (76°F). Expect roughly 127mm of precipitation spread over about 9 rainy days, and this is one of the wetter months.
- Does it rain a lot in Ko Samui in January?
- Ko Samui sees around 127mm of precipitation in January on average — rainy by global standards.
- Is January a good time to visit Ko Samui?
- January is a good month to visit Ko Samui, with generally agreeable conditions.