Early autumn · Weather & things to do
Miami in September
Little changes in Miami from August: highs stay near 85°F (29°C), lows near 81°F (27°C), and about 7.5 in (190 mm) of rain falls.
With a comfort score of 56/100 (11th of 12), it's one of the toughest months, held back mainly by rain.
- Avg high
- 85°F (29°C)
- Avg low
- 81°F (27°C)
- Rain
- 7.5 in (190 mm)
- Humidity
- 78%
- Cloud cover
- 65%
- Daylight
- ~12 h 09 min
- Comfort score
- 56/100 · Fair
What September feels like
Highs settle around 85°F (29°C), warm enough for short sleeves.
Even at night it stays warm, around 81°F (27°C).
Humidity averages 78%, so the air feels sticky and the heat feels stronger than the thermometer says.
Expect regular rain: about 7.5 in (190 mm) falls in the month.
Plan around September
September is one of the lower-scoring months here; the best are November – April.
- Comfort holds steady from August (56 → 56/100).
- Our Florida Keys Adventure route recommends Dec – May, so September falls outside its suggested window.
What to pack for September
- Light, breathable clotheshighs average 85°F
- Sunscreen, sunglasses and a hatstrong sun this month
- Quick-dry fabrics78% average humidity
- Rain jacket and waterproof shoes7.5 in of rain on average
- Comfortable walking shoesmost places below are best reached on foot or with short walks
What to do in Miami in September
Wet days call for a roof: these picks favor sit-down and indoor stops, plus a few for drier spells.
Pérez Art Museum Miami
Modern and contemporary art on Biscayne Bay, with hanging gardens on the terrace.
Why now An indoor-leaning stop for a month with 7.5 in of rain.
Wynwood Walls
Outdoor gallery of large murals by international street artists.
Why now A good rainy-day backup in September.
Versailles Restaurant
Landmark Cuban restaurant on Calle Ocho since 1971.
Why now A sit-down stop to wait out showers in a month with 7.5 in of rain.
Ball & Chain
Revived 1935 Calle Ocho bar with live Latin music and a pineapple-shaped stage.
Why now Easy to slot in when September's rain moves in.
Art Deco Welcome Center
Base for guided walking tours of the 1930s pastel hotels along Ocean Drive.
Nearby in September
- Key Largo in September~49 mi · highs 85°F, 7.8 in rain · similar daytime temperatures, about as wet
- Everglades in September~55 mi · highs 85°F, 8.0 in rain · similar daytime temperatures, about as wet
- Bahia Honda & the Lower Keys in September~101 mi · highs 85°F, 6.6 in rain · similar daytime temperatures, drier
- Key West in September~130 mi · highs 85°F, 7.0 in rain · similar daytime temperatures, about as wet
These averages also cover Downtown Miami & Bayfront and South Beach.
NASA POWER 2001–2025 monthly averages on a ~50 km grid. Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Miami in September: quick answers
Is September a good time to visit Miami?
It's one of the tougher months here, scoring 56/100, held back mainly by rain. The best months are November – April. Expect highs of 85°F (29°C) and 7.5 in (190 mm) of rain. Our Florida Keys Adventure route recommends Dec – May, so September is outside its suggested window.
How hot is Miami in September?
Average highs are 85°F (29°C) and average lows 81°F (27°C), making it the 3rd-warmest month by daytime highs.
Does it rain a lot in Miami in September?
Yes: about 7.5 in (190 mm) of rain falls across September on average, the 2nd-wettest month of the year. The annual total is about 52.2 in (1327 mm).
What should I pack for Miami in September?
Bring light, breathable clothes (highs average 85°F), sunscreen, sunglasses and a hat (strong sun this month), quick-dry fabrics (78% average humidity), rain jacket and waterproof shoes (7.5 in of rain on average) and comfortable walking shoes (most places below are best reached on foot or with short walks).
Planning Miami in September?
Share this September plan with your group, poll everyone on dates and keep the packing list in one place.