Sea Temperature

Ko Samui Sea Temperature

(Today) Jun 2020

31°C / 87.8°F

Current weather

32°C / 90°F
(few clouds)

Partly cloudy

5 mph



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.

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.

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

7 day tide forecast for Ko Samui

  • Low 12:49am
  • High 7:14am
  • Low 1:29pm
  • High 7:31pm
  • Low 1:43am
  • High 8:05am
  • Low 2:20pm
  • High 8:24pm
  • Low 2:30am
  • High 8:50am
  • Low 3:05pm
  • High 9:10pm
  • Low 3:12am
  • High 9:31am
  • Low 3:47pm
  • High 9:53pm
  • Low 3:52am
  • High 10:11am
  • Low 4:27pm
  • High 10:33pm
  • Low 4:30am
  • High 10:49am
  • Low 5:06pm
  • High 11:13pm
  • Low 5:07am
  • High 11:27am
  • Low 5:44pm
  • High 11:52pm
7 day tide times for Ko Samui

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

Average June sea temperatures

  • Max: 30.7°C / 87.3°F
  • Avg: 29.8°C / 85.6°F
  • Min: 28.9°C / 84°F
Ko Samui average sea temperature chart

These average ocean temperatures for Ko Samui are calculated from several years of archived data.

Map showing location of Ko Samui (9.535670, 99.935670)

Locations nearby


Whilst sea temperatures for Ko Samui are as accurate as current data allows, there may be slight local and regional variations depending on conditions. Time of day and wind direction may have a temporary local effect as can water flows from neraby rivers.

Alternate names for Ko Samui
Amphoe Ko Samui, Amphoe Koh Sa-mui, Amphoe Koksamui, Ban Na Dhaun, Ban Na Thaun, Ban Na Thon, Ban Natawn, Ban Naton, Ban Suan Yang, Ko Samui, Na Thaun, Naton, keaasmuy, เกาะสมุย

Ko Samui average sea temperature chart