Climate almanac
Ko Samui
Surat Thani, Thailand · 9.54°, 99.94°
What is the weather like in Ko Samui in May?
In May, Ko Samui is typically 85°F (30°C) during the day and 82°F (28°C) at night. The month brings about 5.4 in (137 mm) of precipitation in total.
- Average high85°F (30°C)
- Average low82°F (28°C)
- Precipitation5.4 in (137 mm)
- Clear or mostly clear days1
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)