Weather in Bangkok in September
September in Bangkok is warm with average temperatures around 27.5°C (81.5°F). Expect significant rainfall with 278mm across approximately 27 days.
Data Note: Temperature values are 2001–2020 satellite/reanalysis grid averages from NASA POWER and may differ from airport station normals by a few degrees.
Temperature
High
30.7°C
87.3°F
Low
24.4°C
75.9°F
Precipitation
278 mm
10.9 inches
~27 rainy days
Conditions
Humidity
85%
Comparison to Adjacent Months
September is 97mm wetter than August.
September is 75mm wetter than October.