Ko Samui Water Temperature

(Today) 2024

31.1°C / 87.9°F

The water will feel unpleasantly warm (stifling). May be a little too warm for any kind of activity, particularly if sunny.

Current weather

31°C / 88°F
(few clouds)
Partly cloudy
Wind
6 mph
Humidity
74%

The measurements for the water temperature in Ko Samui, Surat Thani are provided by the daily satellite readings provided by the NOAA. The temperatures given are the sea surface temperature (SST) which is most relevant to recreational users.

Water temp by month

Monthly average max / min water temperatures

The graph below shows the range of monthly Ko Samui water temperature derived from many years of historical sea surface temperature data.

Ko Samui average maximum / minimum water temperatures
Maximum and minimum monthly sea temperatures in Ko Samui
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 26.9 27.2 27.5 28.2 28.9 28.9 28.9 28.2 28.2 28 28.1 26.8
Max °C 28.5 28.9 29.9 31.5 31.4 30.7 30.6 30.1 30.1 30.4 30.3 29.6
Min °F 81.1 81.6 82.5 84 85 84.7 84.7 83.5 83.5 83.4 83.5 81.4
Max °F 82.7 83.3 84.9 87.3 87.5 86.5 86.4 85.4 85.4 85.8 85.7 84.2

The warmest water temperature is in May with an average around 86.2°F / 30.1°C. The coldest month is January with an average water temperature of 81.9°F / 27.7°C.

7 day tide forecast for Ko Samui

TueWedThuFriSatSunMon
  • Low 3:37am
    (0.66m)
  • High 9:50am
    (3.86m)
  • Low 3:57pm
    (0.65m)
  • High 10:01pm
    (3.7m)
  • Low 4:00am
    (0.56m)
  • High 10:16am
    (3.98m)
  • Low 4:22pm
    (0.55m)
  • High 10:28pm
    (3.74m)
  • Low 4:24am
    (0.52m)
  • High 10:43am
    (4.04m)
  • Low 4:49pm
    (0.52m)
  • High 10:56pm
    (3.71m)
  • Low 4:50am
    (0.54m)
  • High 11:10am
    (4.02m)
  • Low 5:17pm
    (0.56m)
  • High 11:26pm
    (3.62m)
  • Low 5:18am
    (0.62m)
  • High 11:41am
    (3.93m)
  • Low 5:48pm
    (0.67m)
  • High 11:58pm
    (3.47m)
  • Low 5:49am
    (0.78m)
  • High 12:14pm
    (3.77m)
  • Low 6:24pm
    (0.84m)
  • High 12:35am
    (3.27m)
  • Low 6:24am
    (1m)
  • High 12:53pm
    (3.54m)
  • Low 7:06pm
    (1.07m)
7 day tide times for Ko Samui

*These tide times are estimates based on the nearest accurate location (Pulau Besin, Myanmar) and may differ by up to half an hour depending on distance. Please note, the tide times given are not suitable for navigational purposes.