Thailand weather in September
In September, popular resorts in Thailand (Phuket, Pattaya, Krabi, Ko Samui, Hua Hin) average 29°C by day and 27°C at night, and the sea is about 28°C. On average 241 mm of rain falls during the month.
That is the same as in August, and in October days average 28°C.
It is hot: ideal beach and swimming weather. The sea is warm and pleasant for swimming.
Warmest resorts in Thailand in September
Thailand weather in other months
See also
FAQ
Is it warm in Thailand in September?
In September, popular resorts in Thailand (Phuket, Pattaya, Krabi, Ko Samui, Hua Hin) average 29°C by day and 27°C at night, and the sea is about 28°C. On average 241 mm of rain falls during the month. It is hot: ideal beach and swimming weather.
What is the sea temperature in Thailand in September?
About 28°C on average. The warmest water is in Pattaya (29°C).
Where is it warmest in Thailand in September?
The warmest place is Hua Hin (29°C by day), followed by Pattaya (29°C) and Ko Samui (29°C).
Does it rain in Thailand in September?
On average 241 mm of rain falls in the month. It is a fairly wet month, so pack a jacket.
Long-term averages from NASA POWER data (MERRA-2, 2001-2020 reanalysis, CC BY 4.0). Sea temperature is the average water surface temperature at the nearest grid point over the sea. This is climate, not a forecast for a specific day.