Miami in September
In September, Miami averages 31°C (88°F) during the day and 25°C (77°F) at night, with frequent rain — about 17 days of the month see precipitation (240 mm total).
Off-peakConditions are warm and beach-friendly. Expect daily rain or showers, often in heavy bursts.
It's peak hurricane season in Miami during September. Travel is possible but expect storm risk, possible flight disruption, and generally lower travel insurance coverage.
How September compares to the rest of the year in Miami
September is in the middle of the year for warmth in Miami (4th of 12) and one of the wettest months (2nd of 12). Daytime temperature runs 2°C above the annual average (29°C). September runs 2°C cooler than August (33°C) and cools 1°C in October (30°C).
September sunrise & sunset in Miami
Times shown for Miami local time (America/New_York), calculated for the 15th of September. They shift by a few minutes day to day across the month.
Photography light in Miami — September
Golden-hour and blue-hour windows for the 15th of September, in Miami's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Miami in September
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on September's tier (Off-peak) and Miami's popularity.
Crowds & pricing — September in Miami
This is off-peak for Miami — the lowest prices of the year and the fewest crowds, but with real trade-offs: some restaurants, hotels, and beach businesses may close for the season; weather conditions can make outdoor activities unpredictable; and a handful of seasonal sights run reduced hours or close entirely. Great if you prefer a quiet local rhythm and don't mind the climate giving you reasons to choose indoor activities.
Why this tier: peak hazard season (1 active)
Sun & mosquito risk — September in Miami
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Sea temperature in Miami — September
Across the year Miami's sea swings from 22.6°C (January) to 32.2°C (July) — September sits at 30.7°C.
Miami in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 25°C / 77°F | 16°C / 61°F | 41 mm | 6 | 0 |
| February | 26°C / 79°F | 17°C / 63°F | 56 mm | 6 | 0 |
| March | 27°C / 81°F | 19°C / 66°F | 76 mm | 6 | 0 |
| April | 28°C / 82°F | 20°C / 68°F | 79 mm | 6 | 0 |
| May | 30°C / 86°F | 23°C / 73°F | 145 mm | 10 | 0 |
| June | 31°C / 88°F | 25°C / 77°F | 240 mm | 15 | 0 |
| July | 32°C / 90°F | 25°C / 77°F | 165 mm | 16 | 0 |
| August | 33°C / 91°F | 26°C / 79°F | 219 mm | 18 | 0 |
| September | 31°C / 88°F | 25°C / 77°F | 240 mm | 17 | 0 |
| October | 30°C / 86°F | 23°C / 73°F | 168 mm | 12 | 0 |
| November | 27°C / 81°F | 20°C / 68°F | 84 mm | 8 | 0 |
| December | 26°C / 79°F | 17°C / 63°F | 51 mm | 6 | 0 |
Other cities with similar September weather
🌍 See the full ranked list of climate twins for Miami in September →
Frequently asked questions
How hot is Miami in September?
In September, Miami averages a high of 31°C (88°F) and a low of 25°C (77°F) — generally hot.
Does it rain a lot in Miami in September?
September is quite rainy in Miami, with about 17 rainy days on average.
Is September a good time to visit Miami?
September is hot but on the rainy side. It suits travelers who are comfortable with hot weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Miami in September?
Pack lightweight, breathable clothing, sunglasses and sunscreen, plus a compact umbrella or rain jacket. See the full September packing list for Miami for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.