Nathon Temperature by Month

Nathon in Koh Samui, Thailand enjoys a stable climate, with daytime temperatures staying close to 30°C (86°F) throughout the year. Explore the full monthly breakdown below.

The temperature in Nathon changes very little across the seasons, maintaining a similar climate throughout the year. Maximum daytime temperatures range from a comfortable 29°C (84°F) in January to a very warm 31°C (88°F) in May. Nighttime lows range from 28°C (82°F) in May to 26°C (79°F) in January.

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

Temperatures tend to bottom out between 4 AM and 6 AM, then climb to their daily peak around 3 PM. May, the warmest month, sees 193 hours of sunshine.

The chart below shows the average temperature throughout the year:

Nathon's average annual maximum temperature is 30°C (86°F). To put that in context, here's how it compares to a few well-known destinations:

Athens, Greece sits at 23°C (73°F) on average, with hot dry summers and mild winters characteristic of the Mediterranean.

Toronto, Canada averages 13°C (55°F) annually, with cold snowy winters balanced by genuinely warm summers.

Boston, USA averages 16°C (61°F) annually, with four distinct seasons and cold winters that rival northern Europe.

Melbourne, Australia averages 20°C (68°F) annually, known for unpredictable weather, with four seasons sometimes happening in one day.

Temperature alone doesn't tell the whole story, humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.

In Nathon, January is the coolest month, with average highs of 29°C (84°F) and humidity around 83%, considered very high. In May, the warmest month, temperatures average 31°C (88°F) with 80% humidity, conditions that feel very high. For a full picture, see our humidity page.

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.

Whether a city sits on the coast or deep inland makes a significant difference to its climate. Coastal areas tend to have more stable temperatures year-round, large bodies of water absorb heat slowly in summer and release it gradually in winter, keeping extremes in check. Cities far from the sea don't benefit from that buffer, which is why continental climates tend to have hotter summers and colder winters than their coastal counterparts at the same latitude.

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