Monthly climate ·Bangkok weather in September
In September, Bangkok averages around 31° by day and 25° at night, with 27 rain days a month — about a 90% chance of rain on any given day.
By day
31°C
At night
25°C
Daily rain chance
90%
Rain days a month
27
Monthly precipitation
297 mm
Sunshine hours a day
7.9
Average of 2016–2025 (Open-Meteo archive). Typical climate — not a forecast.
Is September a good time to visit Bangkok?
September is a rainy month in Bangkok — 27 rain days on average. Fine if you do not mind the rain, and usually a cheaper season too.
Every month in Bangkok
Frequently asked questions
- What is the weather in Bangkok in September?
- In September, temperatures in Bangkok average between 25° at night and 31° by day, with 27 rain days a month (average of 2016–2025).
- How much rain falls in Bangkok in September?
- Bangkok gets about 297 mm of rain in September on average, spread over roughly 27 rain days.
- Is September a good time to visit Bangkok?
- September is a rainy month in Bangkok — 27 rain days on average. Fine if you do not mind the rain, and usually a cheaper season too.