Koh Tao

Surat Thani Province Weather & Climate: Thailand

Climate by month across Surat Thani Province, Thailand, average temperatures, rainfall and the best time to visit.

Climate overview of Surat Thani Province

When planning a visit to Surat Thani Province in Thailand, it helps to know that temperatures typically range from 28°C (82°F) in January up to 31°C (88°F) during the peak of May. Our detailed climate overview is based on data from Chaweng Beach, the region's most well-known city. For more detailed climate information about other cities in the area, please see the section beneath the map further down the page.

In Surat Thani Province, particularly in Chaweng Beach, temperatures are consistently high throughout the year, with average maximum temperatures always above 28°C (82°F).

April, May and June are generally the hottest months of the year.

When it comes to rainfall, Surat Thani Province sees significant variations throughout the year. October tends to be the wettest, receiving 301 mm (12 in) of rain, while February is much drier with just 44 mm (1.7 in). Travelers should note that the rainy season falls during October and November, bringing substantial precipitation ranging from 294 mm (12 in) to 301 mm (12 in) monthly.

March is the sunniest period, with ideal conditions for exploring the region and all it has to offer.

Explore Surat Thani Province by month

Pick a month to see the average temperature, rainfall and sunshine in Surat Thani Province - and find the best time to visit. (based on Koh Samui)

Popular cities by month

Compare cities per month. Toggle cities on/off.

Koh Samui Chaweng Beach Lamai Beach Koh Tao Bophut Choeng Mon Beach
Day temperature (°C)
Monthly rainfall (mm)
Monthly sunshine (hours)

Climate map of Surat Thani Province

Average daily temperature, monthly rainfall & sunshine hours across cities.

Avg day temp (°C)
32°

Compare popular cities

Average daytime and nighttime temperatures, yearly rainfall and sunshine.

Koh Samui 29°C (84°F) 31°C (88°F) 26°C (79°F) 28°C (82°F) 1645 mm (65 in) 2,151 hours
Chaweng Beach 28°C (82°F) 31°C (88°F) 26°C (79°F) 28°C (82°F) 1681 mm (66 in) 2,151 hours
Lamai Beach 29°C (84°F) 31°C (88°F) 26°C (79°F) 28°C (82°F) 1658 mm (65 in) 2,151 hours
Koh Tao 29°C (84°F) 31°C (88°F) 26°C (79°F) 28°C (82°F) 1794 mm (71 in) 2,160 hours
Bophut 28°C (82°F) 31°C (88°F) 26°C (79°F) 28°C (82°F) 1695 mm (67 in) 2,151 hours
Choeng Mon Beach 28°C (82°F) 31°C (88°F) 26°C (79°F) 28°C (82°F) 1711 mm (67 in) 2,151 hours

Places in Surat Thani Province, Thailand

Select a city to see its average temperature, precipitation and hours of sunshine over the year.

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Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.