September Weather in Miami Beach, United States

Last updated: February 24, 2025

As September unfolds in Miami Beach, United States, the warm embrace of summer lingers, with maximum temperatures reaching 33°C (91°F) and an average temperature of 28°C (82°F). Visitors can expect pleasant evening and nighttime retreats as temperatures dip to a minimum of 24°C (75°F). However, this vibrant month also brings considerable rainfall, with 203 mm (8.0 in) recorded over 22 days, contributing to a humidity level of 76%. Embrace the tropical environment while enjoying the city's stunning beaches and dynamic nightlife—just be prepared for those sudden, refreshing showers!

September Temperature in Miami Beach

September in Miami Beach marks a transition as summer begins to mellow while still retaining its tropical charm. With minimum temperatures averaging around 24°C (75°F), the month reflects a lingering warmth, complemented by an average high of 33°C (91°F). Visitors can expect pleasant days with temperatures hovering around 28°C (82°F), perfect for sun-soaked adventures along the picturesque coastline. Although the heat is significant, September's warmth remains consistent with the preceding months of August and July, making it an appealing time for beachgoers and thrill-seekers alike. As autumn approaches, Miami Beach thrives with vibrant energy, offering both relaxation and excitement under the sun.

September Weather in Miami Beach: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Miami Beach, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec707373777982838382807672
Data source: Temperature data for Miami Beach generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Miami Beach

In September, Miami Beach experiences a notable uptick in rainfall, with 203 mm (8.0 in) of precipitation over 22 days. This marks a peak in the annual precipitation cycle, following the trend of increasing rainfall that begins in the late spring. The summer months, particularly July and August, also see substantial rainfalls of 173 mm (6.8 in) and 181 mm (7.1 in), respectively, but September stands out as the wettest month, highlighting the saturated atmosphere typical of the region. As the transition into fall begins, September's precipitation not only underscores the tropical climate's intensity but also sets the stage for a gradual decline in rainfall as the year progresses toward drier months in late autumn.

September Precipitation Trends in Miami Beach

The chart displays monthly precipitation patterns in Miami Beach, with values for each month alongside September's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec345031631611721741812031579341
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Miami Beach

As summer fades into September, Miami Beach experiences a notable shift in humidity levels. With an average of 76%, September marks a slight increase from the more humid months of June (69%) and July (70%). This transitional month signals a gradual return toward the higher humidity seen earlier in the year, as it approaches the 80% mark typical of November and December. Miami Beach, known for its balmy atmosphere, maintains its tropical charm despite the fluctuations, making it an inviting destination throughout the year.

September Average Humidity in Miami Beach

This chart illustrates the average monthly humidity levels in Miami Beach, with September's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how September's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec81%80%76%73%71%70%70%72%76%79%80%81%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Miami Beach

In September, Miami Beach continues to experience a notably high level of UV intensity, with the UV Index reaching 11 and falling under the extreme exposure category. This trend marks a slight decrease from the peak UV levels in the summer months, though residents and visitors should still exercise caution, as the burn time is approximately 10 minutes. As the year unfolds, Miami Beach demonstrates a seasonal pattern where the UV Index typically peaks from April through August, only to taper off in the fall. To stay sun-safe, understanding these trends is crucial. For more information on UV levels throughout the year, check the Miami Beach UV Index.

Maximum UV Index Levels in Miami Beach for September

The chart shows the monthly maximum UV Index (UVI) for Miami Beach in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec69101212131212111086
Data source: Miami Beach September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

September Sunshine in Miami Beach

September in Miami Beach is a radiant transition from the peak summer months, offering a delightful 314 hours of sunshine. Following the sun-drenched summer, which boasts an impressive 344 hours in July and 340 hours in August, September maintains a generous glow, though it marks a slight dip. As the city eases into autumn, the sun continues to shine brilliantly, ensuring that residents and visitors alike can enjoy outdoor activities and the vibrant culture of this coastal paradise. This month’s totals reflect a beautiful balance between warmth and relaxation, making September a prime time for beachgoers to soak up the fading summer rays before the skies gradually dim in the approaching fall.

Monthly Sunshine Duration in Miami Beach: September Highlighted

The September sunshine duration represents the total number of hours Miami Beach experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec226h281h327h336h325h312h344h340h314h305h280h290h
Data source: Miami Beach September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Miami Beach During September

In Miami Beach, the likelihood of enjoying sunny weather fluctuates throughout the year, with September offering a moderate 31% chance of sunshine. This marks a notable dip compared to the vibrant 60% in February and a notable decline from the late spring months like April and May, which boast a solid 54% and 48% respectively. As summer casts a sprawling shadow, the chances of sun diminish significantly, plummeting to a mere 15% in June and peaking only at that 31% in September. This trend suggests that while late summer might bring warmth and some sun-soaked days, visitors are likely to experience a mixture of sun and clouds as the season transitions into autumn.

Percentage of Sunny Days in September in Miami Beach

The chart illustrates the percentage of sunny days in Miami Beach throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Miami Beach experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec42%60%55%55%48%15%19%24%31%44%40%64%
Data source: Miami Beach September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Miami Beach in September

As September unfolds in Miami Beach, the city enjoys 12 hours of daylight, maintaining the robust summer vibe that prevailed during the peak months. This month marks a transition point, as daylight begins to wane compared to the sun-soaked days of July and August, which each boasted the longest durations at 13 hours. The trend of gradually decreasing daylight continues into October, where the length reduces to 11 hours, signaling the approach of fall. Despite this slight decline, September still offers a balanced blend of sunshine, perfect for outdoor activities, beach outings, and enjoying the vibrant local culture before the daylight dips further into the autumn months.

Average Daylight Hours in Miami Beach for September

The chart illustrates the variation in daylight duration in Miami Beach throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 43m11h 17m12h 1m12h 46m13h 23m13h 42m13h 32m12h 58m12h 15m11h 30m10h 52m10h 33m
Data source: Miami Beach daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Miami Beach

As summer fades in Miami Beach, September brings a noticeable drop in average wind speeds, with gentle breezes settling at just 2.4 m/s (5 mph). This marks a significant decline from the earlier months, where winds typically whip through the area at more dynamic speeds, peaking at 4.9 m/s (11 mph) in both February and March. The transition into autumn is characterized by a calmness that envelops the coastline, inviting beachgoers to revel in the warmer temperatures without the interruption of brisk winds. As the season progresses, the winds are expected to pick up again, but for now, September offers a serene and tranquil atmosphere, perfect for those looking to unwind.

Average September Wind Speed in Miami Beach

The chart displays monthly wind speed patterns in Miami Beach, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.94.94.94.44.63.93.13.42.4 m/s3.54.13.4
Data source: Miami Beach September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Miami Beach Compares to Other Months

The weather in Miami Beach changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of September's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Miami Beach and find detailed weather information for every month.

September and January present contrasting weather patterns. In September, the temperatures are warmer, with a minimum of 24°C (75°F) and an average of 28°C (82°F), reaching a maximum of 33°C (91°F). The month is also marked by significant rainfall, averaging 203 mm (8.0 in) over 22 days, and a humidity level of 76%. In stark contrast, January features much cooler temperatures, with a minimum of 7°C (44°F) and an average of 21°C (70°F), peaking at 28°C (83°F). Precipitation in January is notably lower, at 34 mm (1.3 in) over just 6 days, and the humidity rises slightly to 81%. For more details, check out Miami Beach weather in January.

September and February present contrasting weather patterns. In September, temperatures are generally warm, with a minimum of 24°C (75°F) and an average high of 33°C (91°F). This month is characterized by substantial rainfall, with 203 mm (8.0 in) of precipitation spread over 22 days, contributing to a high humidity level of 76%. In stark contrast, February offers cooler temperatures, with a minimum of 10°C (51°F) and a maximum of 28°C (83°F), alongside significantly lower precipitation levels of just 50 mm (2.0 in) over 9 days. The humidity in February is slightly higher at 79%, but the overall climate feels much milder. For more information on February weather specifically, you can visit Miami Beach weather in February.

September and March present contrasting weather patterns. In September, temperatures are warmer, with a minimum of 24°C (75°F) and an average of 28°C (82°F), reaching highs of 33°C (91°F). This month also sees significant rainfall, averaging 203 mm (8.0 in) over 22 days, contributing to a humid atmosphere with 76% humidity. In contrast, March boasts cooler temperatures, with a minimum of 12°C (54°F) and an average of 23°C (73°F), peaking at 30°C (86°F). Precipitation is minimal in March, totaling only 30 mm (1.2 in) over just 5 days, while humidity remains consistent at 76%. For a detailed look at Miami Beach weather in March, visit Miami Beach weather in March.

When comparing the weather in September and April, we see distinct differences in both temperature and precipitation. September brings warmer conditions with temperatures ranging from a minimum of 24°C (75°F) to a maximum of 33°C (91°F) and an average of 28°C (82°F). In contrast, April features cooler temperatures, with a minimum of 15°C (59°F), an average of 25°C (77°F), and a maximum of 32°C (90°F).

Additionally, September experiences significantly higher precipitation, totaling 203 mm (8.0 in) over approximately 22 days, while April has more moderate rainfall of 63 mm (2.5 in) spread over just 11 days. Humidity levels are somewhat similar, with September at 76% and April at 73%. For more specific insights, you can check out details on Miami Beach weather in April.

September and May both feature warm temperatures, but September tends to be hotter and more humid. In September, the minimum temperature is 24°C (75°F) and averages around 28°C (82°F), with a peak max of 33°C (91°F). In contrast, May offers slightly cooler conditions, with a minimum of 19°C (66°F), an average of 26°C (79°F), and a maximum of 31°C (88°F). Additionally, September sees more precipitation, with 203 mm (8.0 in) over 22 days, compared to May's 161 mm (6.3 in) over 18 days. The humidity in September is also higher at 76% versus 71% in May, giving September a distinctly more sultry feel. For more details, check Miami Beach weather in May.

In comparing the weather of September and June, both months exhibit similar temperature ranges, with June experiencing slightly cooler maximum temperatures at 32°C (90°F) compared to September’s peak of 33°C (91°F). While the average temperatures remain consistent at 28°C (82°F) in both months, September tends to see more precipitation, totaling 203 mm (8.0 in) over 22 days, compared to June's 172 mm (6.8 in) with the same number of rainy days. Additionally, humidity levels are higher in September at 76%, versus 69% in June, making June a drier and slightly more comfortable month for outdoor activities. For more detailed insights, you can refer to Miami Beach weather in June.

In comparing the weather of September and July, both months exhibit similar temperature ranges, with minimums around 24°C (75-76°F), average temperatures close to 28°C (82-83°F), and maximums peaking at 33°C (91-92°F). However, September tends to be wetter, receiving 203 mm (8.0 in) of precipitation over 22 days, compared to July's 173 mm (6.8 in) over 26 days. Additionally, September is slightly more humid, with levels at 76%, whereas July averages around 70%. For those looking to plan visits during these months, detailed information can be found in the guide for Miami Beach weather in July.

In comparing the weather between August and September, we see that September experiences slightly cooler minimum temperatures, averaging 24°C (75°F) compared to August's 25°C (76°F). However, both months share a similar average temperature of around 28°C (82°F), with September peaking at a maximum of 33°C (91°F) and August reaching 32°C (90°F). Interestingly, September has a higher precipitation total of 203 mm (8.0 in) over 22 days, compared to August's 181 mm (7.1 in) over 25 days, indicating that September tends to be wetter but with fewer rainy days. Humidity levels are also higher in September at 76%, compared to 72% in August, contributing to a more humid feel as summer transitions into autumn. For a more detailed look at the weather conditions in August, you can visit Miami Beach weather in August.

September and October in Miami Beach show a notable transition in weather patterns. While September boasts warmer temperatures with a minimum of 24°C (75°F) and an average of 28°C (82°F), October cools down significantly, featuring a minimum of 15°C (59°F) despite a similar average of 27°C (81°F). Both months experience high humidity, but October sees a slight increase to 79%. Precipitation remains consistent, with September receiving 203 mm (8.0 in) and October slightly less at 157 mm (6.2 in), both recorded over 22 days. For a more detailed look at October's weather, you can check Miami Beach weather in October.

In September, the weather tends to be warm and humid, with temperatures ranging from a minimum of 24°C (75°F) to a maximum of 33°C (91°F), and an average of 28°C (82°F). This month also sees significant precipitation, with 203 mm (8.0 in) falling over 22 days. In contrast, November offers a much cooler climate, with temperatures dropping to a minimum of 12°C (54°F) and a maximum of 30°C (86°F), averaging 24°C (76°F). Rainfall is noticeably lower in November, totaling 93 mm (3.7 in) over just 14 days, while humidity remains high at 80%. For more detailed insights about November weather, check out Miami Beach weather in November.

September and December present striking contrasts in weather. In September, temperatures are warmer, with a minimum of 24°C (75°F) and an average of 28°C (82°F), while December sees much cooler temperatures, with a minimum of 11°C (51°F) and an average of 22°C (72°F). While September experiences significant rainfall at 203 mm (8.0 in) over 22 days, December is much drier, with only 41 mm (1.6 in) over 9 days. Humidity remains relatively high in both months, though slightly more intense in December at 81%, compared to 76% in September. For a closer look at December weather specifics, check out Miami Beach weather in December.

Compare Miami Beach's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Miami Beach

As September rolls into Miami Beach, the weather takes on a distinct character compared to other months of the year. With warm temperatures averaging around 28°C (82°F) and peaks reaching a sizzling 33°C (91°F), the month still hosts plenty of sunshine, though it's accompanied by high humidity at 76%. This mix can make the atmosphere feel quite sultry. However, be prepared for more frequent rain, as September experiences about 22 days of precipitation, adding up to 203 mm (8.0 in) throughout the month. This blend of warmth and moisture sets September apart, making it a unique transitional period before the cooler autumn days. For a deeper dive into the weather patterns, check the full details at Miami Beach Climate.