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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More than 7 million unique visitors since February 1999

Samui Weather

Climate in Thailand

Thailand's climate is tropical and high in both temperature and humidity. Most people find it 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". A a dip in a pool can also be very refreshing.

Remember to drink a lot of water so you don't become dehydrated. You will experience "summer temperatures" here year round, but the weather in Koh Samui is normally divided into three seasons:

The dry season

The hot season

Monsoon or Rainy season

For daily reports about the weather, click here

The Weather Today

We offer daily live weather reports from Koh Samui and Koh Phangan. Just 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

Differences in Climate

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

Weather Seasons

The 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.

The 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.

The Rainy 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. These are 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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