Miami Weather in September
September in Miami sees daytime temperatures around 32°C (90°F) and lows of 25°C (77°F) at night. Being part of the rainy season, heavy rainfall is a regular part of the day, so pack accordingly.
Rainfall in Miami in September
As part of the rainy season, Miami sees around 26 days of rain in September, with an average of 238 mm (9.4 in). Rainfall this month is frequent and tends to be fairly heavy when it does fall. Packing waterproofs is a good idea.
Temperature in Miami in September
September in Miami brings typical temperatures with highs around 32°C (90°F) and lows of 25°C (77°F). Mornings and evenings are often more comfortable than the peak afternoon hours. Nights stay warm at around 25°C (77°F), so light bedding and good ventilation are worth thinking about.
Sunshine in Miami in September
The days are predominantly sunny, with an estimated total of around 260 hours of sunshine. Rain is often only seen in the afternoon or evening, leaving clear skies for most of the day. This results in rainy months that still feel bright and are suitable for travel.
Wind Speed in Miami in September
September sees wind speeds averaging 4 m/s (8 knots). You'll experience variable conditions with moderate winds that create small waves on water and keep branches moving. Conditions range from light winds to moderate breezes throughout the month.
Average water temperature in September
The water is 28°C (82°F) this month — warm enough that getting in requires no effort at all. Good conditions for swimming, snorkeling, or just floating around.September in Miami has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Miami's climate page.
Miami Temperature in September
Min Temperature
25°C (77°F)
Max Temperature
32°C (90°F)
Water Temperature
28°C (82°F)
Chance of Rain
86%
Precipitation
238 mm (9.4 in)
Rainy days
26 days
Humidity
78%
Windspeed
4 m/s (8 knots)
Sunshine
260 hours
Percentage Sunshine
71%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Miami typically stay consistent throughout September, with daily highs averaging around 32°C (90°F). Nights are warm, with lows around 25°C (77°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Miami in September
Browse day-by-day weather records for Miami spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Miami historical weather extremes in September
The extremes listed below come from historical weather data collected in Miami from 1976 through 2025.
- The warmest day in September was on September 8, 1987, with a maximum of 36°C (97°F).
- Miami experienced its chilliest September day on September 30, 1984, reaching only 24°C (75°F).
- Miami registered its coldest September night on September 30, 2022, with temperatures dropping to 21°C (70°F).
Best Places in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
perfect weather
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What to Wear in Miami in September
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! The water temperature sits at about 28°C (82°F), making it perfect for swimming and water activities. Don't forget to pack your favorite swimwear and perhaps some snorkel gear. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Miami in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Miami's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Miami climate overview or explore weather in the United States of America.
