Ko Samui Water Temperature
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Ko Samui is a Island close to Gulf of Thailand.
May is the month with the highest water temperature at 87.1°F / 30.6°C.
The coldest month is January with an average water temperature of 81.9°F / 27.7°C.
February is the driest at 0in / 1.1mm and October the wettest month with 17.1in / 434.4mm.
With an average air temperature of 82.9°F / 28.3°C, April is the warmest month in a year. December is the coldest with 77.9°F / 25.5°C average air temperature.
The Climate is described as tropical monsoon climate. Best time to Visit would be in January, February, March, May, June, July, August, September.
The coldest month is January with an average water temperature of 81.9°F / 27.7°C.
February is the driest at 0in / 1.1mm and October the wettest month with 17.1in / 434.4mm.
With an average air temperature of 82.9°F / 28.3°C, April is the warmest month in a year. December is the coldest with 77.9°F / 25.5°C average air temperature.
The Climate is described as tropical monsoon climate. Best time to Visit would be in January, February, March, May, June, July, August, September.
Ko Samui Summary
| Description | Value |
|---|---|
| Current water temperature | / |
| Warmest Month Water Temperature: | May with 30.6°C / 87.1°F |
| Coldest Month Water Temperature: | January with 27.7°C / 81.9°F |
| Warmest Month Air Temperature: | April with 28.3°C / 82.9°F |
| Coldest Month Air Temperature: | December with 25.5°C / 77.9°F |
| Wettest Month: | October with 434.4mm / 17.1in |
| Driest Month: | February with 1.1mm / 0in |
| Highest Humidity | October with 87.6% |
| Lowest Humidity | March with 75.2% |
| Best Time to Visit: | January, February, March, May, June, July, August, September |
| Climate Classification | tropical monsoon climate |
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Ko Samui water temperature by month
Gulf of Thailand water temperature by month
| Max. Water
Temperature (°C) |
ø. Water
Temperature (°C) |
Min. Water
Temperature (°C) |
|
|---|---|---|---|
|
January |
27.9 | 27.7 | 27.4 |
|
February |
28.7 | 28.2 | 27.8 |
|
March |
29.9 | 29.3 | 28.6 |
|
April |
30.7 | 30.3 | 29.8 |
|
May |
30.8 | 30.6 | 30.3 |
|
June |
30.4 | 30.1 | 29.7 |
|
July |
29.9 | 29.7 | 29.4 |
|
August |
29.5 | 29.3 | 29.1 |
|
September |
29.6 | 29.3 | 29.1 |
|
October |
29.4 | 29.2 | 29.1 |
|
November |
29.1 | 28.8 | 28.4 |
|
December |
28.5 | 28.1 | 27.6 |
Gulf of Thailand water temperature by month
| Max. Water
Temperature (°F) |
ø. Water
Temperature (°F) |
Min. Water
Temperature (°F) |
|
|---|---|---|---|
|
January |
82.2 | 81.9 | 81.3 |
|
February |
83.7 | 82.8 | 82 |
|
March |
85.8 | 84.7 | 83.5 |
|
April |
87.3 | 86.5 | 85.6 |
|
May |
87.4 | 87.1 | 86.5 |
|
June |
86.7 | 86.2 | 85.5 |
|
July |
85.8 | 85.5 | 84.9 |
|
August |
85.1 | 84.7 | 84.4 |
|
September |
85.3 | 84.7 | 84.4 |
|
October |
84.9 | 84.6 | 84.4 |
|
November |
84.4 | 83.8 | 83.1 |
|
December |
83.3 | 82.6 | 81.7 |
The warmest water temperature are in May with around 87.1°F / 30.6°C.
The coldest in January with an average water temperature of 81.9°F / 27.7°C.
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Ko Samui weather today & 14-day weather forecast
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Ko Samui weather by month / climate table
Max. Temperature °C | ø. Temperature °C | Min. Temperature (°C) |
Precip. (mm) |
Rainy Days (d) |
Rel. Humidity (%) |
|
|---|---|---|---|---|---|---|
|
January |
28.8 | 25.6 | 23 | 79.3 | 10 | 81.1% |
|
February |
30.7 | 26.4 | 22.8 | 1.1 | 0 | 75.9% |
|
March |
31.8 | 27.5 | 23.5 | 85.7 | 3 | 75.2% |
|
April |
32.8 | 28.3 | 24.8 | 114.3 | 12 | 75.8% |
|
May |
31.9 | 27.7 | 25.2 | 258.7 | 27 | 80.2% |
|
June |
31.2 | 27.4 | 25 | 193.8 | 24 | 79.9% |
|
July |
31.1 | 27.2 | 24.8 | 192.7 | 24 | 79.1% |
|
August |
31.3 | 27.1 | 24.6 | 221.8 | 25 | 79.2% |
|
September |
30.9 | 26.5 | 24.3 | 284.6 | 27 | 82.9% |
|
October |
29.4 | 25.9 | 23.9 | 434.4 | 0 | 87.6% |
|
November |
28.6 | 25.8 | 23.8 | 391.5 | 27 | 87.2% |
|
December |
28.2 | 25.5 | 23.1 | 212 | 19 | 83.7% |
Max. Temperature °F | ø. Temperature °F | Min. Temperature (°F) |
Precip. (in) |
Rainy Days (d) |
Rel. Humidity (%) |
|
|---|---|---|---|---|---|---|
|
January |
83.8 | 78.1 | 73.4 | 3.1 | 10 | 81.1% |
|
February |
87.3 | 79.5 | 73 | 0 | 0 | 75.9% |
|
March |
89.2 | 81.5 | 74.3 | 3.4 | 3 | 75.2% |
|
April |
91 | 82.9 | 76.6 | 4.5 | 12 | 75.8% |
|
May |
89.4 | 81.9 | 77.4 | 10.2 | 27 | 80.2% |
|
June |
88.2 | 81.3 | 77 | 7.6 | 24 | 79.9% |
|
July |
88 | 81 | 76.6 | 7.6 | 24 | 79.1% |
|
August |
88.3 | 80.8 | 76.3 | 8.7 | 25 | 79.2% |
|
September |
87.6 | 79.7 | 75.7 | 11.2 | 27 | 82.9% |
|
October |
84.9 | 78.6 | 75 | 17.1 | 0 | 87.6% |
|
November |
83.5 | 78.4 | 74.8 | 15.4 | 27 | 87.2% |
|
December |
82.8 | 77.9 | 73.6 | 8.3 | 19 | 83.7% |
The warmest avg. temperature is around 82.9°F / 28.3°C, April is the month with the highest temperature. December is the coolest with 77.9°F / 25.5°C average air temperature.
February is the month with the min. precipitation of 0in / 1.1mm and October with the max. precipitation in a year with 17.1in / 434.4mm.
