What September feels like in Miami
For Miami, September is early autumn on the calendar. Afternoons are hot, so sightseeing works best in the morning or evening. Nights bring little relief: even the coolest hour of the night stays very warm. The air is muggy, so it feels hotter than the thermometer suggests.
Rain in Miami in September
Rain is part of normal life this month, falling on most days. Wet days average about 7.9 mm (0.3 in), enough to soak you without an umbrella. That is close to Miami's typical rain per wet day for the whole year (about 7.3 mm). It is among the three wettest months of the year.
Daylight and sunshine in September
On 15 September the sun rises at about 7:06 am and sets around 7:26 pm local time, giving 12 h 20 min of daylight. Evenings are drawing in — 44 min less daylight than mid-August. The sun is out for roughly 82% of those daylight hours, so skies are mostly clear.
How September compares to the rest of the year
Ranked by average high, September comes out as the 3rd warmest month in Miami. Afternoons run 1°C (1.8°F) cooler than in August, with 31 mm more rain. The cooling trend carries on into October. The next month's average high: 28.3°C (82.9°F).
Who September suits
- Sightseeing: less ideal — rain falls on more than half the days.
- Parks & outdoor: less ideal — afternoons are too warm to linger outside.
- Beach: less ideal — too many rainy days.
- Museums & indoor: a good choice — with rain on most days, galleries and museums make easy plans.
Tips for visiting Miami in September
Rain Protection
A compact umbrella and a light waterproof jacket.
Sun Protection
Protect yourself from strong sun: hat, SPF and plenty of water.
Quick questions
How warm is Miami in September?
Expect around 29.7°C (85.5°F) in the afternoon and 25.2°C (77.4°F) at night, which most visitors would call hot.
Does it rain a lot in Miami in September?
It does: about 23 rainy days bring roughly 182 mm, so plan some indoor options.
What should I wear in Miami in September?
Based on the averages: rain protection and sun protection. There is little need to change for the evening.
Is September or October better for visiting Miami?
On our 12-month climate ranking, October comes out ahead (#8 of 12 vs #12). October is cooler and has fewer rainy days.