Ko Samui
Next 24 hours
Local time: 00:00 +07
Sunrise: 06:08
Sunset: 18:01
Saturday
03:00
28°C 82°F
06:00
28°C 82°F
09:00
29°C 84°F
12:00
30°C 86°F
15:00
31°C 88°F
18:00
30°C 86°F
21:00
29°C 84°F
Sunday
00:00
28°C 82°F

Ko Samui: Annual Weather Averages

May is the hottest month in Ko Samui with an average temperature of 30°C (85°F) and the coldest is January at 26°C (79°F) with the most daily sunshine hours at 8 in April. The wettest month is November with an average of 430mm of rain. The best month to swim in the sea is in April when the average sea temperature is 28°C (82°F).

Average Temperature: Ko Samui

Loading weather data. Please wait…

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 26 27 29 29 30 29 29 29 28 27 27 27
°F 79 81 84 84 86 84 84 84 82 81 81 81

Average High/Low Temperature: Ko Samui

Loading weather data. Please wait…

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
High °C 28 29 31 32 33 32 32 32 31 30 29 29
High °F 82 84 88 90 91 90 90 90 88 86 84 84
Low °C 24 25 26 26 26 26 25 25 25 24 24 24
Low °F 75 77 79 79 79 79 77 77 77 75 75 75

Average Rainfall: Ko Samui

Loading weather data. Please wait…

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 90 30 30 80 160 100 120 100 130 290 430 150
Days 7 5 4 5 9 9 9 10 11 16 15 9

Average Daily Sunshine Hours: Ko Samui

Loading weather data. Please wait…

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hours 7 8 8 8 6 6 6 6 6 6 6 7

Average Sea Temperature: Ko Samui

Loading weather data. Please wait…

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 26 27 27 28 28 28 28 28 28 27 27 27
°F 79 81 81 82 82 82 82 82 82 81 81 81

Your Holiday Weather Settings

Show temperature in:
Show distance in: