Koh Phangan has a tropical climate with warm weather throughout the year. The year can be divided into three seasons: a cool season (technically the island’s winter) with cooler weather and little to no rain, a hot season and a short wet season towards the end of the year.
Viewpoint at Bottle Beach © christianhaugen
The most popular time to visit Koh Phangan is during the cool season, which lasts from early December until late February. Koh Phangan is much less crowded during the rest of the year, aside from the days immediately before and after the Full Moon Party.
Like nearby Koh Samui, Koh Phangan has one of the shortest rainy seasons of any island in Thailand. The rainy season typically lasts from early October until the end of November, with rainy weather sometimes extending briefly into the first weeks of December.
Koh Phangan is fairly humid throughout the year but certainly not unbearable, with humidity of 75 to 85 per cent. Like Koh Samui, Koh Phangan’s beaches get calm sea winds that make the hot weather and humidity far less uncomfortable than you may expect.
Best Time to Visit Koh Phangan
- For the best weather, you should visit Koh Phangan during the high season, which lasts from early December until March. During this period, the weather is cool and comfortable, with lower daytime temperatures, humidity and rainfall than the rest of the year.
Weather in Koh Phangan in January
In January, Koh Phangan is warm and comfortable, with an average high of 29.1°C and low of 24.1°C. Rainfall is fairly low, with just 144.2mm of rain over the course of the month. January is one of the most popular months to visit Koh Phangan, and the island can feel slightly crowded.
Weather in Koh Phangan in February
Temperatures pick up and rain decreases in February. The average high is 29.5°C, with a low of 25.2°C. February is the driest month of the year on Koh Phangan, with 33.3mm of rainfall for the island and plenty of warm, sunny days.
Weather in Koh Phangan in March
March is another dry month, with just 50mm of rain for Koh Phangan. The average temperature increases slightly from February to a high of 30.8°C and a low of 25.8°C. March is the end of the high season on Koh Phangan, with crowds getting progressively smaller as the month passes.
Weather in Koh Phangan in April
April is another warm and dry month. Koh Phangan gets an average total of 85.8mm of rainfall in April, with highs of 32.1°C and lows of 26.2°C. April is the last month of Koh Phangan’s dry season, although the rainy season doesn’t truly start until much later in the year.
Weather in Koh Phangan in May
May is warmer and rainier than April, with 157.5mm of rainfall around the island. Temperatures are hot but not unbearable, with average highs of 32.5°C and lows of 25.8°C. May is one of the least busy months on Koh Phangan, making it a great time to visit for a low-budget trip.
Weather in Koh Phangan in June
June is another hot month, and the final month before temperatures begin to decline. There is 92.8mm of rainfall on average, with highs of 32.2°C and lows of 25.6°C. June is another quiet month on Koh Phangan, with great accommodation deals often available.
Weather in Koh Phangan in July
July on Koh Phangan is largely the same as June, with average highs of 31.9°C and lows of 25.1°C. Rainfall for the month is 130.9mm, with occasional showers but none of the extremely heavy rain you’ll see later in the rainy season.
Weather in Koh Phangan in August
August is another month with consistently warm weather, with average highs of 31.8°C and lows of 25.2°C. Rainfall remains steady at 105.5mm for the island, with showers unlikely to affect any holiday plans and usually limited to short periods in the evening.
Weather in Koh Phangan in September
September is the final month of calm weather on Koh Phangan before the rainy season begins in October. Temperatures hover between an average high of 31.5°C and a low of 24.9°C. Koh Phangan can be somewhat rainy towards the end of September as the wet season begins.
Weather in Koh Phangan in October
October marks the beginning of Koh Phangan’s rainy season, with a significant increase in the island’s rainfall. Precipitation more than doubles from September to 265.9mm, with showers in the late afternoon and evening on most days and temperatures between 24.9 and 31.5°C.
Weather in Koh Phangan in November
November is by far the rainiest month of the year on Koh Phangan, with average precipitation of 526.1mm recorded around the island. Temperatures are cool and comfortable at 24.1 to 29.5°C, although the evening rain can bring with it significant humidity.
Weather in Koh Phangan in December
Koh Phangan’s rainy season comes to an end in the first weeks of December, with an average of 203.1mm of rain for the month. During the last weeks of December, the weather on Phangan is sunny, cool and ideal for enjoying the island, hovering between 23.9 and 29.0°C.
This is by far the most popular period to visit Koh Phangan, with higher demand and prices for accommodation around the island, especially in popular areas such as Haad Rin.
Visiting Koh Phangan from April onwards, and particularly during the rainy season, allows you to take advantage of much greater hotel availability and lower rates. Many hotels reduce their rates by 50% or more from April to November, compared to the December to February peak season.
Buy Tickets To Koh PhanganYou can buy bus and ferry tickets to Koh Phangan online. Use the search box below to find out departure times, prices and to book online. Enter a different starting point if you're not coming from Bangkok
Koh Phangan Travel Guide:
- Koh Phangan – A Very Quick Travel Guide
- Full Moon Party Koh Phangan
- Drugs on Koh Phangan
- Full Moon Party Accommodation on Koh Phangan
- Things To Do On Koh Phangan
- Places To Eat On Koh Phangan
- Koh Phangan Villas For Rent
- Where To Stay On Koh Phangan
- Koh Phangan Day Trips
- Koh Phangan Weather
- How To Get To Koh Phangan
- Koh Phangan Airport
- Koh Phangan Beaches