Sai Yok Weather & Climate: Best Time to Visit

With minimal seasonal shifts, Sai Yok experiences a constant climate year-round. Average daytime temperatures reach a very hot 37°C (99°F) in April. In December, the coolest month of the year, temperatures drop to a very warm 30°C (86°F).

At night, temperatures range from around 25°C (77°F) in April to 20°C (68°F) in December.

Check out our detailed temperature page for more information.

Temperature ranges by month

Sai Yok has a notably wet climate with abundant precipitation, recording 1298 mm (51 in) of rainfall per year. Sai Yok can be quite wet during September, receiving approximately 222 mm (8.7 in) of precipitation over 22 rainy days.

In contrast, during the driest month (December), you will experience much drier conditions, with 10 mm (0.4 in) of precipitation spread across 2 rainy days. For more details, please visit our Sai Yok Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Sai Yok can be enjoyed more throughout the sunniest month of December under a blue sky, with approximately 8.8 hours of sunshine daily. In contrast, the city experiences much darker days in September, with only 3.6 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The relative humidity is high throughout the year in Sai Yok.

The city experiences its highest humidity in October, reaching 80%. In March, the humidity drops to its lowest level at 61%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year