Florida, USA
Long term weather forecast
Long term weather forecast

September weather forecast and Climate
Miami, FL

  • Average high temperature in September: 89.3°F

Warmest month (with highest average high temperature) is August (91°F).
Month with lowest average high temperature is January (76.4°F).

  • Average low temperature in September: 76.5°F

Month with highest average low temperature is August (77.4°F).
Coldest month (with lowest average low temperature) is January (59.9°F).

  • Average humidity in September: 77.8%

Month with highest relative humidity is September (77.8%).
Month with lowest relative humidity is April (67.3%).

  • Average rainfall in September: 7"

Wettest month (with highest rainfall) is June (7.9").
Driest month (with lowest rainfall) is December (1.7").

  • Average rainfall days in September: 17.9 days

Month with highest number of rainy days is August (18.9 days).
Month with lowest number of rainy days is April (6.4 days).

  • Average sea temperature in September: 84°F

Best month for swimming (with highest average sea temperature) is August (86°F).
Coldest months (with lowest average sea temperature) are January, February and March (75°F).

  • Average daylight in September: 12h

Months with longest days are June and July (Average daylight: 14h).
Months with shortest days are January, February, November and December (Average daylight: 11h).

  • Average sunshine in September: 8.7h

Month with most sunshine is July (Average sunshine: 10h).
Month with least sunshine is December (Average sunshine: 7h).

  • Average UV index in September: 10

Months with highest UV index are April, May, June, July and August (UV index 11).
Month with lowest UV index is December (UV index 5).