September in Similan Islands brings a mix of warm temperatures and significant rainfall. The mercury often hits a high of 32°C, making the days quite hot. On the other hand, the nights provide a bit of relief with temperatures dropping to a cooler 26°C. This contrast in temperature adds a unique charm to the island’s weather, making it an interesting time to visit.
Rainfall is quite high in September, with the islands receiving around 220 mm of rain. This means there are frequent showers throughout the month. The wind speed is also notable, averaging around 16 km/h. Despite the rain and wind, the islands maintain a certain allure, offering a different kind of beauty under the grey skies.
