When is the best time to go to Ko Samui?

When is the best time to go to Ko Samui? Here's some information to help you in your decision:

  • On the island of Koh Samui, the weather is good everywhere in February, March, April, May, July and August
  • The best months to go to Chaweng Beach are February, March, April, May, July and August
  • On average, it is hot all year round in Chaweng Beach
  • November is the wettest month in this city
  • The cities with the best climate are Chaweng Beach, Bang Kao (Laem Sor beach), Bophut, Choeng Mon, Koh Madsum, Koh Taen, Lamai beach, Lipa Noi, Maenam and Nathon, with good weather at least 6 months a year
  • The sea temperature is suitable for swimming all year round in Chaweng Beach


Annual weather on the island of Koh Samui

For information about the climate and the weather city by city on the island of Koh Samui for a specific month, click on the corresponding line below:

January 81°F to 83°F
10 to 11 days*
February 83°F
5 days
March 85°F
6 to 7 days*
April 86°F
8 to 9 days*
May 88°F
11 to 14 days*
June 86°F
12 to 15 days*
July 86°F
11 to 14 days*
August 86°F
9 to 14 days*
September 85°F
12 to 16 days*
October 85°F
18 to 19 days*
November 85°F
21 days
December 85°F
14 to 15 days*
* weather varies across the country

Best time to travel to Ko Samui by cities

Chargement en cours
Chaweng Beach

Chaweng Beach

The best months to go to Chaweng Beach are february, march, april, may, july and august.

Bang Kao (Laem Sor beach)

Bang Kao (Laem Sor beach)

The best months to go to Bang Kao (Laem Sor beach) are february, march, april, may, july and august.

Bophut

Bophut

The best months to go to Bophut are february, march, april, may, july and august.



Temperatures and rainfall on the island of Koh Samui

On these 3 graphs, we present the evolution of temperatures of Ko Samui and month-by-month rainfall for the cities of Chaweng Beach, Bang Kao (Laem Sor beach), Bophut, Choeng Mon and Koh Madsum, as well as the month-by-month sea temperature for coastal cities.


Peak visitor numbers and tourist seasons on the island of Koh Samui

Find out when Ko Samui has its high tourist season (the period when the influx of tourists is highest) and off-peak tourist season using our data and figures.

Tourist seasons on the island of Koh Samui

The months with low numbers of tourists are: March, April, May, June, September, October and November. The number of visitors to Ko Samui is high in: January, February, July, August and December.

  • Very low season on the island of Koh Samui: November.
  • Low season on the island of Koh Samui: March, April, May, June, September and October.
  • High season on the island of Koh Samui: January, February, July and December.
  • Peek season on the island of Koh Samui: August.

Figure: Visitor index for Ko Samui month by month

Where to go on the island of Koh Samui?

This table allows you to see the maximum temperature for each city and our opinion on the weather month by month (see colour legend below the table).

Cities jan.feb.mar.apr.mayjun.jul.aug.sep.oct.nov.dec.
Chaweng Beach83°F83°F85°F86°F88°F86°F86°F86°F86°F85°F85°F85°F
Bang Kao (Laem Sor beach)83°F83°F85°F86°F88°F86°F86°F86°F86°F85°F85°F85°F
Bophut83°F83°F85°F86°F88°F86°F86°F86°F86°F85°F85°F85°F
Choeng Mon83°F83°F85°F86°F88°F86°F86°F86°F86°F85°F85°F85°F
Koh Madsum83°F83°F85°F86°F88°F86°F86°F86°F86°F85°F85°F85°F
Koh Phaluai83°F83°F85°F86°F88°F86°F86°F86°F85°F85°F85°F85°F
Koh Taen83°F83°F85°F86°F88°F86°F86°F86°F86°F85°F85°F85°F
Lamai beach83°F83°F85°F86°F88°F86°F86°F86°F86°F85°F85°F85°F
Lipa Noi83°F83°F85°F86°F88°F86°F86°F86°F86°F85°F85°F85°F
Maenam83°F83°F85°F86°F88°F86°F86°F86°F86°F85°F85°F85°F
Nathon83°F83°F85°F86°F88°F86°F86°F86°F86°F85°F85°F85°F

Legend:

good weather

tolerable weather

very bad weather



About Ko Samui

What can I do on the island of Koh Samui?

Beaches / swimming

Nature and countryside

Culture and heritage

Sports

Family travel

Crafts / shopping

Gastronomy

Nightlife



Is this weather information for Ko Samui reliable?

Climate data for Ko Samui has been gathered every day since January 2009. The analysis of these meteorological data for Ko Samui allows us to determine the average for each month in Chaweng Beach, Bang Kao (Laem Sor beach), Bophut, Choeng Mon, Koh Madsum, Koh Phaluai, Koh Taen, Lamai beach, and 3 other cities.

So yes: this data is reliable except in cases of temporary climate disruption in the region.

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