Best Time To Visit Ko Samui, Thailand

Best Time To Go To Ko Samui

The climate of Ko Samui is a tropical savanna kinds with heavy rainfall almost all around the year. The climate is usually humid and warm. The temperature is usually around 27 – 28 degrees Celsius throughout the year.

  • Dry Season: Though not actually dry, the months of December to April receive relatively lesser rainfall.
  • Hot Season: May to September the weather is generally hot, but dry. Storms are expected during this period.
  • Rainy Season: The months of October to December receive the maximum amount of rainfall of all the months of the year.

If you want to enjoy at the beach then plan a visit in the dry and relatively cooler months of December to April. This is a best time to visit Ko Samui, the only drawback being the large number of other tourists.

Climate in Ko Samui

Know weather for your travel dates:

24-May-2018
Today 24 May

87

81

Rain in the morning.

Wind:1.39 m/s

Humidity:77%

Precipitation:0.52%

  • Fri 25 May
    88 | 81

    Humid and overcast throughout the day.

  • Sat 26 May
    88 | 81

    Humid and mostly cloudy throughout the day.

  • Sun 27 May
    88 | 82

    Humid and overcast throughout the day.

  • Mon 28 May
    89 | 82

    Humid and overcast throughout the day.

  • Tue 29 May
    90 | 82

    Humid and overcast throughout the day.

  • Wed 30 May
    86 | 81

    Humid and overcast throughout the day.

Month wise Weather in Ko Samui

Average Temperature in Ko Samui by month

  • 80℉
  • 60℉
  • 40℉
  • 20℉ 0℉
Jan

Average temperature: 78℉

Minimum temperature: 70℉

Maximum temperature: 90℉

Feb

Average temperature: 79℉

Minimum temperature: 68℉

Maximum temperature: 90℉

Mar

Average temperature: 80℉

Minimum temperature: 70℉

Maximum temperature: 91℉

Apr

Average temperature: 81℉

Minimum temperature: 72℉

Maximum temperature: 93℉

May

Average temperature: 83℉

Minimum temperature: 72℉

Maximum temperature: 93℉

Jun

Average temperature: 82℉

Minimum temperature: 72℉

Maximum temperature: 93℉

Jul

Average temperature: 82℉

Minimum temperature: 72℉

Maximum temperature: 91℉

Aug

Average temperature: 82℉

Minimum temperature: 73℉

Maximum temperature: 91℉

Sep

Average temperature: 81℉

Minimum temperature: 72℉

Maximum temperature: 91℉

Oct

Average temperature: 81℉

Minimum temperature: 72℉

Maximum temperature: 93℉

Nov

Average temperature: 80℉

Minimum temperature: 72℉

Maximum temperature: 90℉

Dec

Average temperature: 78℉

Minimum temperature: 72℉

Maximum temperature: 90℉

Highest temperature in Ko Samui is recorded as 93.2℉ in April, May, June and October.

Lowest temperature in Ko Samui is recorded as 68℉ in February.

Average Rain in Ko Samui by Month (in mm)

  • 80
  • 60
  • 40
  • 20 0
Jan

Average Rain: 31.86 mm

Minimum Rain: 0 mm

Maximum Rain: 139.35 mm

Feb

Average Rain: 7.57 mm

Minimum Rain: 0 mm

Maximum Rain: 77.42 mm

Mar

Average Rain: 3.39 mm

Minimum Rain: 0 mm

Maximum Rain: 34.08 mm

Apr

Average Rain: 15.95 mm

Minimum Rain: 0 mm

Maximum Rain: 150.21 mm

May

Average Rain: 11.54 mm

Minimum Rain: 0 mm

Maximum Rain: 52.67 mm

Jun

Average Rain: 21.73 mm

Minimum Rain: 0 mm

Maximum Rain: 317.42 mm

Jul

Average Rain: 16.43 mm

Minimum Rain: 0 mm

Maximum Rain: 147.1 mm

Aug

Average Rain: 8.53 mm

Minimum Rain: 0 mm

Maximum Rain: 41.82 mm

Sep

Average Rain: 66.99 mm

Minimum Rain: 0 mm

Maximum Rain: 1621.17 mm

Oct

Average Rain: 9.19 mm

Minimum Rain: 0 mm

Maximum Rain: 74.31 mm

Nov

Average Rain: 14.65 mm

Minimum Rain: 0 mm

Maximum Rain: 188.92 mm

Dec

Average Rain: 30.97 mm

Minimum Rain: 0 mm

Maximum Rain: 292.67 mm

Maximum rain recorded in Ko Samui is 1621.17 mm in September.

Months with no rains or lowest rains in Ko Samui is March.

Average Humidity in Ko Samui by Month (in %)

  • 100
  • 75
  • 50
  • 25 0
Jan

Average Humidity: 87%

Minimum Humidity: 78%

Maximum Humidity: 96%

Feb

Average Humidity: 79%

Minimum Humidity: 69%

Maximum Humidity: 86%

Mar

Average Humidity: 80%

Minimum Humidity: 74%

Maximum Humidity: 90%

Apr

Average Humidity: 83%

Minimum Humidity: 77%

Maximum Humidity: 94%

May

Average Humidity: 80%

Minimum Humidity: 75%

Maximum Humidity: 87%

Jun

Average Humidity: 78%

Minimum Humidity: 72%

Maximum Humidity: 87%

Jul

Average Humidity: 79%

Minimum Humidity: 75%

Maximum Humidity: 85%

Aug

Average Humidity: 79%

Minimum Humidity: 76%

Maximum Humidity: 84%

Sep

Average Humidity: 79%

Minimum Humidity: 72%

Maximum Humidity: 87%

Oct

Average Humidity: 81%

Minimum Humidity: 74%

Maximum Humidity: 88%

Nov

Average Humidity: 85%

Minimum Humidity: 73%

Maximum Humidity: 95%

Dec

Average Humidity: 86%

Minimum Humidity: 75%

Maximum Humidity: 95%

Most humid month in Ko Samui is January.

Least humid month in Ko Samui is June.

Best time to visit Ko Samui Attractions in May