Weather in Hong Kong in September
September in Hong Kong is warm with average temperatures around 27.8°C (82.0°F). Expect significant rainfall with 161mm across approximately 16 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
30.0°C
86.0°F
Low
25.7°C
78.3°F
Precipitation
161 mm
6.3 inches
~16 rainy days
Conditions
Humidity
81%
Comparison to Adjacent Months
September is 58mm drier than August.
September is 2.5°C warmer than October, 111mm wetter than October.