Monthly climate guide
Miami weather in September
Expect hot weather in Miami in September: afternoons reach about 29°C (85°F), while nights drop to around 28°C (82°F). Around 164 mm of rain falls over the month (very wet), and skies are often cloudy. Daytime highs are about the same as August and about the same as October.
What stands out in September
- Only 2 months are warmer in Miami than September.
- Nights stay warm, rarely below 28°C — air-conditioning helps.
- Humidity near 78% makes 29°C feel stickier than it sounds.
- There's little difference between day and night (around 2°C).
Avg high
29°C
85°F
Avg low
28°C
82°F
Rainfall
164 mm
very wet
Humidity
78%
relative
Sky
64%
cloud · often cloudy
Miami weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 23°C / 74°F | 20°C / 68°F | 58 mm | 75% | 60% |
| February | 24°C / 75°F | 21°C / 70°F | 44 mm | 76% | 47% |
| March | 25°C / 76°F | 22°C / 71°F | 40 mm | 72% | 46% |
| April | 27°C / 80°F | 24°C / 75°F | 83 mm | 74% | 51% |
| May | 28°C / 82°F | 25°C / 77°F | 149 mm | 75% | 56% |
| June | 29°C / 84°F | 27°C / 81°F | 173 mm | 77% | 69% |
| July | 30°C / 86°F | 28°C / 82°F | 158 mm | 76% | 63% |
| August | 30°C / 86°F | 28°C / 83°F | 175 mm | 77% | 63% |
| September | 29°C / 85°F | 28°C / 82°F | 164 mm | 78% | 64% |
| October | 28°C / 82°F | 26°C / 79°F | 144 mm | 77% | 55% |
| November | 26°C / 78°F | 24°C / 74°F | 73 mm | 76% | 47% |
| December | 25°C / 76°F | 22°C / 72°F | 54 mm | 77% | 52% |
What to pack for September
- Light, breathable clothing (cotton or linen)
- A sun hat and high-SPF sunscreen
- A refillable water bottle
- A compact umbrella or packable rain jacket
- Water-resistant shoes
- Quick-dry fabrics — it feels stickier than the temperature suggests
Is September a good time to visit Miami?
Our Miami guide recommends: November to April, outside the hot, humid, and hurricane-prone summer and early autumn months.
Check the Atlantic hurricane season (June–November) if booking a summer trip — it can affect flights and outdoor plans with little notice.
Best time to visit Miami →Other United States cities in September
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Miami weather in September. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/usa/miami/september
<a href="https://weathercompare.eu/weather/usa/miami/september">Miami weather in September</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/usa/miami" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Miami weather in September"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/usa/miami/september">Miami weather in September</a> – WeatherCompare</p>
Miami in September: quick answers
Is September a good time to visit Miami?
September is one of the wetter months in Miami, with about 164 mm of rain. You can still go: pack a rain jacket and keep plans flexible.
How warm is Miami in September?
Average highs are about 29°C (85°F) and average lows about 28°C (82°F), based on 10 years of daily data.
Does it rain a lot in Miami in September?
Miami typically gets around 164 mm of rain in September — very wet.
When is the best time to visit Miami?
November to April, outside the hot, humid, and hurricane-prone summer and early autumn months.
Figures are long-term averages for the area around Miami (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.