Ko Samui: January Weather


Ko Samui Weather in January

January is a good time to visit Ko Samui as it falls during the dry season.

You can expect clear sunny days with little to no rain, light sea breezes and calm seas. Daytime temperatures average 27°C (80°F).

January is a great time of the year for exploring Ko Samui on foot as well as enjoying the warm seawater with swimming, snorkelling and kayaking.

Typically in January, wind conditions on the west coast are better for swimming while the east coast is best for wind surfing.


Ko Samui Weather Averages in January 

Average Temperature (°C)  Temperature icon  27°C (80°F)
Average High Temperature (°C)  Temperature icon  29°C (83°F)
Average Low Temperature (°C)  temperature icon  24°C (75°F)
Hours of Sunshine (Daily)  sun icon  7 hours per day
Hours of Daylight (Daily)  12  12 hours per day
Comfort Level  Moderately hot icon  Moderate heat & 85% humidity
UV Index  11  Extreme
Days with some Rainfall  umbrella icon  7 days
Average Monthly Rainfall (mm)  rain cloud  90mm
Sea Temperature (°C)  swimming icon  28°C (82°F)
Weather averages for Ko Samui, Thailand

Best time to visit Ko Samui

The best time to visit Ko Samui is during the dry season from late-December to April, with February to April usually the driest months averaging 28°C (82°F).

Ko Samui Annual Weather


Ko Samui Monthly Weather Review

January February March April May June
July August September October November December
Latest update on this honeymoon destination: 11 June, 2020
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