Suratthani Temperature by Month

The average annual maximum temperature in Suratthani, Koh Samui, Thailand is 32°C (90°F), with little variation between seasons. This page covers monthly averages, day-night differences, and how Suratthani compares to cities worldwide.

Suratthani enjoys a stable climate with temperatures staying pretty much the same throughout the year. Maximum daytime temperatures range from a very warm 30°C (86°F) in December to a very warm 35°C (95°F) in April. Nights are consistently cool, with lows between 26°C (79°F) and 24°C (75°F).

The chart below illustrates the average maximum day and minimum night temperatures in Suratthani by month:

The coolest part of the day is typically between 4 AM and 6 AM, while 3 PM is usually the warmest, when solar heating is at its peak.

The chart below shows the average temperature throughout the year:

Suratthani's average annual maximum temperature is 32°C (90°F). To put that in context, here's how it compares to a few well-known destinations:

Barcelona, Spain has an annual average of around 21°C (70°F), with warm summers and mild, fairly short winters.

Glasgow, Scotland averages 13°C (55°F) a year, mild but often grey, with cold winters and rarely hot summers.

San Francisco, USA averages 19°C (66°F) annually, but with little seasonal variation, summers are often cool and foggy, winters mild.

Adelaide, Australia averages 21°C (70°F) a year, with warm summers, mild winters, and relatively low rainfall year-round.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

Seasonal temperature shifts influence more than just how warm it feels, they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.

Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Suratthani this rarely lasts long on the ground.

For more on Suratthani's weather, including monthly rainfall, sunshine hours, and humidity, visit our Suratthani climate page.