September falls within the latter half of Koh Samui’s monsoon season. Typically, this period experiences higher rainfall and humidity compared to other times of the year. Visitors can expect a mix of sunshine and rain showers, often heavy and short-lived, interspersed with periods of calm. Sea conditions can be unpredictable, with stronger waves and potential disruptions to boat schedules.
Understanding the climatic conditions prevalent during this month is vital for travelers planning a visit. While the heavier rainfall may deter some, September offers advantages such as lower prices on accommodations and fewer crowds. This presents an opportunity for a more tranquil experience, particularly for those seeking a peaceful escape. Historically, this period has been a time of transition between the peak tourist season and the drier months to come.