Long term weather forecast
Long term weather forecast

September weather forecast and Climate
Mumbai, India

  • Average high temperature in September: 30.4°C

Warmest month (with highest average high temperature) is November (33.5°C).
Month with lowest average high temperature is August (29.6°C).

  • Average low temperature in September: 24.3°C

Month with highest average low temperature is May (26.3°C).
Coldest month (with lowest average low temperature) is January (16.8°C).

  • Average humidity in September: 83%

Months with highest relative humidity are July and August (86%).
Month with lowest relative humidity is February (67%).

  • Average rainfall in September: 312.3mm

Wettest month (with highest rainfall) is July (799.7mm).
Driest month (with lowest rainfall) is March (0.2mm).

  • Average rainfall days in September: 14.4 days

Month with highest number of rainy days is July (23.2 days).
Month with lowest number of rainy days is March (0 days).

  • Average sea temperature in September: 28°C

Best months for swimming (with highest average sea temperature) are May, June, July and October (29°C).
Coldest months (with lowest average sea temperature) are January and February (25°C).

  • Average daylight in September: 12h

Months with longest days are April, May, June, July and August (Average daylight: 13h).
Months with shortest days are January, November and December (Average daylight: 11h).

  • Average sunshine in September: 5.5h

Month with most sunshine is May (Average sunshine: 9.6h).
Months with least sunshine are July and August (Average sunshine: 2.4).

  • Average UV index in September: 12

Months with highest UV index are March, April, May, June, July, August and September (UV index 12).
Month with lowest UV index is December (UV index 7).