When is the sunniest time on Koh Samui? Weather is perfect this time of year in Koh Samui to be enjoyable for warm weather travelers. Calendar Year Picker View. Summers in Koh Samui are hot with fewer to no rainfall. Located off the east coast of Thailand between the Tropic of Cancer and the Equator, the island has a tropical monsoon climate with 3 … Koh Samui weather in April 6. The average asking price for property rentals in Ko Samui is ฿ 63,254 for houses and ฿ 0 for commercials. Kata Beach in Phuket. Refine your search to help you find the perfect Ko Samui property by price and number of bedrooms. As it is the wettest month in Koh Samui. The big storms are long gone but the island can still get rain every day (particularly at the beginning of the month). Weather in January. 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. After the scorching heat, the downpour is a welcome change, the rainfall cuts the humidity down which summers in Koh Samui is famous for. Unless you prefer rain to sunshine, Koh Samui is a better bet in April. The island only faces some unpleasant weather approximately five years per time which the last big monsoon storm hit Koh Samui was in 2010 causing floods and some difficulties to travel by ferry. The weather in Koh Samui. Jan. Calendar Month Picker. In Koh Samui, February and March are the sunniest days, while the cloudiest are September and October. These times of year are the busiest with tourists. Ko Samui average temperature. Climate data for Ko Samui has been gathered every day since January 2009. At 228 square kilometres, Ko Samui is Thailand's third-largest island and famous for its full moon parties. February is usually the driest, while April is the hottest. Phuket and Koh Samui Weather by Month. Even when it does rain the clouds disappear quickly and the sun returns. 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. Ko Samui Weather by month // weather averages Keeping warm is rarely a problem in Koh Samui with each month offering plenty of sunny days. Koh Samui: The tail end of the wet season. 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 is a year-round travel destination as the weather there is not severe even during the monsoon period. It will be sunny during these months, and the chances of light rain are close to zero. Best Time To Visit Koh Samui, Month For Weather & Least Rain, Thailand. For absolutely no legitimate reason, I get excited when Samui “wins”. 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. Mar. The temperatures are highest on average in May, at around 28.5 °C | 83.3 °F. Sun mon tue wed thu fri … While the islands are enchanting all year round, the best weather is from December to April. May receives more rainfall than March and April. At 25.2 °C | 77.4 °F on average, January is the coldest month of the year. As of 5:29 am ICT. The temperature starts rising in Koh Samui by March. Is this weather information for Ko Samui reliable? The average high during this season is between 85.8°F (29.9°C) and 83.9°F (28.8°C). 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. On average, it rains or snows a fair amount: 3 to 10 times per month. 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