Hottest (avg)
#3 / 12
Miami in September
September weather, climate averages, and packing tips.
Avg High
Avg Low
Rain
Daylight 12h
What to expect
As autumn continues, September brings, where the air is cooling down. Daytime highs average 29°C / 85°F, dropping to 25°C / 78°F at night.
The atmosphere is generally hot and tropical, with heavy bursts of rain breaking the heat. The sun is very strong at this time of year, making sun protection essential during the day.
September in context
How it compares to the rest of the year in Miami.
Wettest (avg)
#2 / 12
Daylight Hours
#6 / 12
Windiest (avg)
#9 / 12
Highest UV
#6 / 12
Most Humid
#1 / 12
Temperature
- Daytime high
-
- Nighttime low
-
- Feels like (avg)
-
Sunshine
- Daylight
- 12.3 hours
- UV index (max)
- 9
- Typical sun hours
- 06:06 – 18:23
Rain & Snow
- Total
-
- Rainy days
- 25
- Cloud cover
- 66%
- Snowfall
-
Humidity & Wind
- Humidity (avg)
- 81%
- Wind (avg)
-
- Wind (max gusts)
-
Frequently asked questions
Is September a good time to visit Miami?
Typical September days in Miami reach highs of 29°C (84°F) with nights around 25°C (77°F). It usually feels hot by day and warm after dark. It is among the wetter months, so it is wise to have some indoor backup plans or flexible activities.
What are temperatures like in September?
Daytime temperatures in September typically peak near 29°C (84°F), while nights drop to around 25°C (77°F). Expect hot afternoons and warm evenings.
How much does it rain in September?
Rainfall in September averages 171 mm (6.7 in) across roughly 25 days. Overall it is a very wet time of year, so a light rain jacket and waterproof shoes are very handy.
How many hours of daylight are there in September?
You can expect about 12 hours of daylight in September. Sunrise is typically around 06:06 and sunset near 18:23. Daylight is fairly typical, with enough time for sightseeing.
How strong is the sun in September?
UV levels frequently reach very high levels (around 9), so strong sun protection is essential, especially around midday.
Is it windy in September?
In September, average wind speeds are around 12 km/h (7 mph), with gusts on the windiest days reaching about 44 km/h (27 mph). On the ground, it is it often feels breezy, especially in more exposed spots or along the coast.