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