Ko Samui: August Weather


Ko Samui Weather in August

August is a good time to visit Ko Samui if you like hot weather.

You can expect hot sunny days interspersed with the occasional late afternoon tropical downpour. Daytime temperatures average 29°C (84°F).

Weather conditions in August are great for swimming, snorkelling, scuba diving and kayaking. It’s also a good time to explore Ko Samui on foot or by elephant.


Ko Samui Weather Averages in August 

Average Temperature (°C)  Temperature icon  29°C (84°F)
Average High Temperature (°C)  Temperature icon  32°C (90°F)
Average Low Temperature (°C)  temperature icon  25°C (77°F)
Hours of Sunshine (Daily)  sun icon  6 hours per day
Hours of Daylight (Daily)  12  12 hours per day
Comfort Level  Very high heat & humidity icon  Very high heat & 80% humidity
UV Index  11  Extreme
Days with some Rainfall  umbrella icon  10 days
Average Monthly Rainfall (mm)  rain cloud  100mm
Sea Temperature (°C)  swimming icon  29°C (84°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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