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Average temperatures, rainfall, sunshine and the best time to visit Ban Mae Nam.
With consistently stable weather, Ban Mae Nam, Koh Samui, Thailand, sees little seasonal temperature change. Daytime highs average 30°C (86°F), ranging from 31°C (88°F) in May to 28°C (82°F) in January.
Rainfall is high, totalling around 1690 mm (67 in) per year. October is the wettest month and February the driest. The most sunshine falls in March, with an average of 8.0 hours of daily sunshine.
Pick a month to see the average temperature, rainfall and sunshine in Ban Mae Nam - and find the best time to visit.
The climate in Ban Mae Nam remains fairly constant, offering comfortable temperatures throughout the year. Average maximum daytime temperatures range from a very warm 31°C (88°F) in May, the warmest time of the year, to a comfortable 28°C (82°F) during cooler months like January.
At night, you can expect temperatures ranging from 28°C (82°F) in May to around 26°C (79°F) during January.
Check out our detailed temperature page for more information.
Ban Mae Nam is known for its substantial rainfall, with annual precipitation reaching 1690 mm (67 in). Significant seasonal changes in precipitation occur throughout the year. In the wettest month, October it receives heavy rainfall, averaging 303 mm (12 in) of precipitation, recorded across 20 rainy days. In contrast, the driest month February brings less rainfall, with 45 mm (1.8 in) over 5 rainy days. For more details, please visit our Ban Mae Nam Precipitation page.
Seasonal changes in sunshine hours are quite dramatic in Ban Mae Nam. While March receives considerable daily sunshine with up to 8.0 hours, September marks the darkest time of the year, where sunshine is scarce with only 4.8 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
The city experiences its highest humidity in October, reaching 85%. In June, the humidity drops to its lowest level at 78%. What does this mean? Read our detailed page on humidity levels for further details.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
January and February typically offer the most optimal weather in Ban Mae Nam. In contrast, October and November tend to have less optimal conditions.
Daytime highs range from 28°C (82°F) in January to 31°C (88°F) in May. Nighttime lows range from 26°C (79°F) to 28°C (82°F). Temperatures stay relatively stable year-round.
Annual rainfall is around 1690 mm (67 in). October is the wettest month with 303 mm (12 in), while February is the driest with 45 mm (1.8 in).
Ban Mae Nam receives around 2,151 hours of sunshine per year. March is the sunniest month with 240 hours, while September is the cloudiest with just 145 hours. Overall, Ban Mae Nam enjoys abundant sunshine.
Ban Mae Nam is highlighted - select any city to see its climate.
Where to go in October - average daytime high across popular destinations.
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