Koh Samui is a year-round travel destination as the weather there is not severe even during the monsoon period. The big storms are long gone but the island can still get rain every day (particularly at the beginning of the month). Ko Samui average temperature. Summers in Koh Samui are hot with fewer to no rainfall. When is the sunniest time on Koh Samui? April is the hottest month of the year. Weather in January. Average monthly temperatures in Ko Samui (degrees centigrade and fahrenheit) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec °C: 28.4: 29.1: 30.2: 31.6: 31.8: 31.3: 31 Koh Samui weather in April 6. Keeping warm is rarely a problem in Koh Samui with each month offering plenty of sunny days. Best Time To Visit Koh Samui, Month For Weather & Least Rain, Thailand. Koh Samui: The tail end of the wet season. May receives more rainfall than March and April. The average high during this season is between 85.8°F (29.9°C) and 83.9°F (28.8°C). As it is the wettest month in Koh Samui. Mar. Ko Samui Weather by month // weather averages Rainy days (avg): 5 days (80mm) on Koh Samui vs 11 days (150mm) in Phuket; Sea temperature: 28°C on Koh Samui vs 30°C in Phuket *data source. For absolutely no legitimate reason, I get excited when Samui âwinsâ. Is this weather information for Ko Samui reliable? After the scorching heat, the downpour is a welcome change, the rainfall cuts the humidity down which summers in Koh Samui is famous for. Ko Samuiâs properties for rent are either listed by private home owners or property agents such as . It will be sunny during these months, and the chances of light rain are close to zero. Otherwise, it is still lovely to visit Samui in November because accommodation rates are cheaper, there are fewer tourists, and you can completely enjoy the island. In Koh Samui, February and March are the sunniest days, while the cloudiest are September and October. The weather in Koh Samui. On average, it rains or snows a fair amount: 3 to 10 times per month. Unless you prefer rain to sunshine, Koh Samui is a better bet in April. Even when it does rain the clouds disappear quickly and the sun returns. Sun mon tue wed thu fri ⦠Kata Beach in Phuket. Phuket and Koh Samui Weather by Month. Monthly Weather-Ko Samui, Surat Thani, Thailand. Refine your search to help you find the perfect Ko Samui property by price and number of bedrooms. Located off the east coast of Thailand between the Tropic of Cancer and the Equator, the island has a tropical monsoon climate with 3 ⦠These times of year are the busiest with tourists. At 228 square kilometres, Ko Samui is Thailand's third-largest island and famous for its full moon parties. The temperatures are highest on average in May, at around 28.5 °C | 83.3 °F. The latest and today's weather in Ko Samui, Thailand updated regularly Ko Samui is a popular holiday destination off the east coast of Thailand. Weather is perfect this time of year in Koh Samui to be enjoyable for warm weather travelers. Climate data for Ko Samui has been gathered every day since January 2009. The temperature starts rising in Koh Samui by March. 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. As of 5:29 am ICT. While the islands are enchanting all year round, the best weather is from December to April. February is usually the driest, while April is the hottest. At 25.2 °C | 77.4 °F on average, January is the coldest month of the year. Calendar Year Picker View. Jan. Calendar Month Picker. The average asking price for property rentals in Ko Samui is ฿ 63,254 for houses and ฿ 0 for commercials. 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