Weather in Miami in September 2025
- September is usually the wettest month of the year in Miami;
Average weather
Average temperature in Miami in September
The temperature in September is +32°C on average, with a range between a maximum of +34°C during the day and a minimum of +24°C at night.
The average maximum temperature goes down 10% by the end of the month, compared with the beginning of the month, from +34°C to +33°C.
Is Miami warm or cold in September?
Miami is typically warm in September.
Maximum temperatures go down compared to the previous month from +31°C to +30°C. The minimum temperature also goes up from +26°C to +26°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
September is one of the warmest months in Miami, here is the comparison with other months:
Water temperature in Miami in September
Water in Miami in September is Very warm. It varies from +29°C to +31°C, with an average of +30°C. This is almost similar to the air temperature, which averages +30°C.
The water temperature in September is one of the warmest of the entire year:
Can you swim in Miami in September?
Climate in Miami in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +31°C | +30°C | +29°C | ||||
| Min. temperature | ||||||
| +21°C | +20°C | +13°C | ||||
| Max. temperature | ||||||
| +35°C | +35°C | +34°C | ||||
| Rainfall | ||||||
| 151 mm | 159 mm | 111 mm | ||||
| Wind | ||||||
| 3 m/s | 3 m/s | 3 m/s | ||||
| Avg. water temperature | ||||||
| +30°C | +30°C | +28°C | ||||
| Humidity | ||||||
| 75% | 77% | 74% | ||||
| Air pressure | ||||||
| 1015 HPa | 1014 HPa | 1014 HPa | ||||
| Sunny days | ||||||
| 1 | 1 | 2 | ||||
| Cloudy days | ||||||
| 2 | 2 | 7 | ||||
| Rainy days | ||||||
| 14 | 15 | 17 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September weather is still as ok as in August. It’s getting colder in September. From +31°C in the day, the average maximum temperature lowers to +30°C. Prepare for more rain. Average rainfall goes from 151 mm to 159 mm. Humidity rises from 75% to 77%. The average wind speed doesn’t change much during September, staying around 3 m/s. The amount of sunny days stay about the same, averaging 1 sunny days during the month.
But maybe it is worth considering traveling in October as the weather gets better.
Wind
The average wind speed is 3 m/s getting up to 5 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Miami is gradually increasing during September, going from 1 m/s to 2 m/s over the course of the month.
Rain
How was the weather last September in Miami?
Climate Change over Years
The climate in Miami in September has not changed much over the last 43 years.
The average temperature was the lowest in 1984 (+26°C) and the highest in 2023 (+30°C). The driest year was 2004 with only 707 mm of rainfall, and the wettest year was 2020 with 2595 mm.
FAQ
Is September a good time to visit Miami?
Can you sunbathe in Miami in September?
Can you swim in Miami in September?
Is Miami rainy in September?
Is it sunny in Miami in September?
Other cities in USA
Monthly weather in Miami
Source of the data
For this page, we’ve looked at the typical weather in Miami, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.