Samui Weather
The Climate in Thailand
Thailand's climate is tropical. High in both temperature and humidity and most people find it very pleasant. The average temperature is about 30 degrees Celsius, or 86 degrees Fahrenheit.
When it is getting too hot, just enter a air conditioned hotel room or shop for a while and you will "recharge your batteries".
Remember to drink a lot of water so you do not become dehydrated. You will probably experience "summer temperatures" here year round, but Thailand and Koh Samui is normally divided into three seasons:
The dry season, the hot season and the monsoon or rain season.
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The Weather Today
We offer daily live weather reports and weather alerts from Koh Samui and Koh Phangan. Click on the link:
The Koh Samui weather - Daily live reports
Please note: Most weather forecast websites do NOT offer accurate forecasts for this region. However, we are always reporting LIVE from Samui and Phangan.
AFTERNOON SUNSHINE - Photo by Jens W - Kohsamui.org
The Sun and Moon Data
Different than the West Coast
The climate seasons are not exactly the same as in Krabi and Phuket as these destinations are located in/at the Andaman Sea and Koh Samui, Koh Phangan and Koh Tao are located in the Gulf of Thailand. This makes the climate differences rather evident.
YOUNG WOMAN ON SAMUI - Photo by Jens W - Kohsamui.org
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Samui Climate and Seasons
Dry Season
December - February: The dry season. Not much rain, but it might occur some refreshing wind or breeze at this time. Great for wind and body surfing. It is normally a lot of sunshine at this season.
Hot Season
March - August: The weather is still dry in this time, and it is usually very sunny and hot. In May it might rain a little more though. This is a great period to visit the islands if you can stand temperatures ranging from 28-35 degrees Celsius at daytime.
Rain Season
September - November: Also known as the monsoon season. It's still hot and normally there are many sunny days in the monsoon period. On some days you might find yourself in a refreshing monsoon shower for a moment. The rain showers are often short and as these island's water supplies are finite, the rain is needed and important.
DAWN AT NORTH LAMAI - Photo by Jens W - Kohsamui.org
Samui Weather Statistics
Temperatures in Celsius. Average values:
| Month |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
| Max. temp |
31 |
32 |
33 |
33 |
31 |
31 |
31 |
31 |
30 |
31 |
31 |
31 |
| Min. temp |
23 |
23 |
24 |
25 |
25 |
25 |
25 |
24 |
24 |
24 |
24 |
24 |
| Water temp |
26 |
27 |
27 |
28 |
28 |
28 |
28 |
28 |
28 |
27 |
27 |
27 |
| Sun hours |
280 |
258 |
237 |
231 |
215 |
162 |
108 |
138 |
128 |
176 |
231 |
290 |
| Rain mm |
38 |
8 |
12 |
62 |
186 |
113 |
143 |
123 |
210 |
260 |
302 |
98 |
BANG POR SUNSET - Photo by Jens W - Kohsamui.org
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Tip of the top » On low season (May-July) many hotels provide lower rates and the weather is often rather good. A good time to go!
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