Unlike the rest of Thailand, the climate in the southeast of the country remains fairly constant, and benefits places like Koh Samui where around the year the temperature and regular rainfall contributes to the rich, tropical appearance of the island.
Early in the year, temperatures are ‘cooler’ at just under 30°C, then the hot season is from March until May, with less rain than the rest of the year and temperatures closer to 40°C. From June to September, the days are mainly sunny, with a refreshing breeze, the temperature is again just under 30°C, and you may get caught out in a rain shower or thunderstorm! From October to the middle of December it is the rainy season, but by Christmas, the weather is generally drier and sunny again.
The tropical climate on Koh Samui is one of the big attractions to those living outside the tropics, where year round warm weather is not the norm.
Instead, living year round on Koh Samui, you experience the wet and dry seasons, dictated by the prevailing monsoon winds.
Dry Season, December - February: The dry season on Samui. Not much rain, but there can be a refreshing wind or breeze on these islands then.
Hot Season, March - August: The weather is still dry, and rather hot. In May the rain may increase a little. This is a great period to visit Samui if you can stand 30-35 degrees Celsius during the day, and as a consequence there are LESS people on the island.
Rainy Season, September - November: Also known as the monsoon season. It's still hot and normally there are many sunny days. The rain showers often last just for a short while though and as these island's water supplies are finite, the water is needed.
Notice! The climate seasons are not exactly the same as in Krabi and Phuket, as these destinations are located in/at the Andaman Sea whereas Koh Samui, Koh Phangan and Koh Tao are located in the Gulf of Thailand. |
