When is the best time to go to Samui? We can tell you the weather conditions on the island and the forecast for the right dates.
Samui Island has a slightly different climate to the rest of Thailand. You should check the weather forecast before traveling to avoid any unpleasant situations.
Climate on the island
While the sun is shining in Surat Thani province, the rest of Thailand has long been in the rainy season.
In April and May the temperature on the island begins to drop. Remarkably, this is also the time when prices drop on everything. Therefore, during this period you can save a lot of money on your vacation.
Rainy season
In Samui, even the rain comes in a different way. For example, while in another province or island, rainfall can pour incessantly for a couple of days, the resort simply doesn't have such downpours. At the height of the rainy season, rains last 2-3 hours with a break for a day. So take it easy: take a raincoat and bravely sightsee, walk around and enjoy your vacation.
Winter season on Samui
Resort in December
In December, it often rains and temperatures are lower than usual. It is impossible to say that the climate figures are the same from year to year. Sometimes the weather will be sunny on New Year's Eve, or it may be that the clouds will cover the sky for a long time. To top it all off, strong winds blow, causing a storm.
Water and air temperatures
In the daytime, the thermometer rarely rises to +30°C. At night, the temperature ranges from +24°C to +25°C. The water in the sea warms up to +27°C.
Resort in January
Midwinter is characterized by the end of the rainy season, while the kingdom of Thailand is in the midst of the dry season. The weather is also changeable, from stormy seas, to rain, to windy winds. If you decide to go to Koh Samui in January, children should refrain from swimming in the sea, but for surfers it's the perfect time.
Water and air temperatures
January is the coldest month on the island by tropical standards. Daytime highs reach +29°C and nighttime lows are +25°C. The water is warm at +27°C. Towards the end of January, the weather is already better and the frequency of rain decreases.
Resort in February
February is the driest month of the year: rainfall is very rare and short. With the end of winter comes the beach season in Samui. This is the best time for family vacations: the sea is warm and gentle, and there are no waves.
Water and air temperatures
The air warms up to +28°C...+30°C during the day, up to +25°C in the afternoon. The water temperature is stable: +27°C.
Weather Conditions in Samui in Spring
Resort in March
Samui resort blooms in spring: the temperature rises, the rains practically stop, and the water is warmer. Importantly, the tides increase and the coastline increases by 50-70 meters. To swim in deeper water, you'll need to walk another 100 meters in the water or drive to the permanent depth water spots:
Chaweng Noi;
Lamai Center;
Maenam.
Water and Air Temperature
The temperature rises to +33°C during the day and the water to +28°C.
Resort in April
This month, Samui experiences its hottest weather with unlikely rainfall. High tides are still as common as ever. April marks the start of the low tourist season due to high temperatures. Beaches become half-empty, and hotels make discounts.
Water and Air Temperatures
The maximum air temperature is +34°C...+36°C, and the water temperature is +29°C.
Resort in May
Temperatures in May are as high as in the previous month. The only difference is that it rains twice as often, with storms lasting about an hour several days a week. Coming to Samui during this time, you need to be careful in the water. The underwater currents become stronger, and the risk of being swept into the open waters increases. So under no circumstances should you swim beyond the red flags.
Water and Air Temperatures
The maximum air temperature is +34°C...+36°C, and the water temperature is +29°C.
Resort in June
In early summer, the weather on Samui is exactly the same as it is in May. The rainy season has started almost all over Thailand, while here it's sunny and warm.
Water and Air Temperatures
The maximum air temperature is +34°C...+36°C, and the water temperature is +29°C.
Resort in July
If you decide to vacation in Thailand in the summer, Samui in July is the best option. It's hot and dry during the day. At night, there are occasional short-term, hourly rains that knock down the day's dust and bring a temporary coolness. The sea is more or less calm.
Water and Air Temperatures
The daytime high is +32°C, nighttime +26°C. The water is a warm +27°C.
Resort in August
The weather in August repeats the previous months. It is still dangerous to swim on some beaches due to underwater currents. The safest and most comfortable place to swim and relax where there is no low tide is:
Maenam;
Lamai.
Water and Air Temperatures
Daytime high +32°C, nighttime high +26°C. The water is a warm +27°C.
Resort in September
This month is good weather for vacationing in Samui. There is much less rainfall, and temperatures are consistently high.
Water and Air Temperatures
The daytime high is +32°C, and the nighttime high is +25°C. The water is +28°C.
Resort in October
The dry weather on Samui will stick around for the first half of the month. Overall rainfall is more than in September by a factor of 2.5. Cold precipitation noticeably cools the air, and it becomes noticeably cooler. The wind is noticeably stronger, causing excitement at sea. October is the best period for surfers and extreme sports enthusiasts.
Water and Air Temperatures
The air warms up to +32°C during the day and +26°C at night. The water is warm.
Resort in November
The island's rainy season is in full swing, so it's not the best month for a vacation. Downpours pour down almost every day, strong winds knock you off your feet, and the sea is stormy.
Water and Air Temperatures
Temperatures rarely rise to +30°C during the day and drop to +24°C...+25°C at night. The water in the sea warms up to +27°C.
Samui is a beautiful island in the Gulf of Thailand with finicky and unpredictable weather. Even during the rainy season, the sun can peek out, and vice versa. So be sure to check the weather forecast and stay tuned for updates before choosing a tour.
