Last updated: August 31, 2025
September weather in Florida and Puerto Rico is marked by a blend of warmth and occasional rainfall. With maximum temperatures reaching 32°C (90°F) and an average of 26°C (79°F), the days are typically hot and humid, influenced by a high humidity level of 79%. Rain is a common feature this month, as evidenced by an average precipitation of 205 mm (8.1 in) over approximately 26 days. Visitors can expect a tropical climate that highlights the region's lush landscapes but should be prepared for frequent showers that add a refreshing dimension to the heat.
As September rolls in, Florida and Puerto Rico bask in warm tropical temperatures that continue the summer trend. With minimums lingering at 22°C (72°F) and average highs hovering around 32°C (90°F), the month remains invitingly hot. The average temperature settles at a comfortable 26°C (79°F), making it a prime time for beachgoers and outdoor enthusiasts alike. While the heat is persistent, there's a slight dip from the peak summer months, indicating the gradual shift towards the fall season. Amidst this warmth, the vibrant landscapes and lively festivals create an irresistible atmosphere, encouraging both relaxation and adventure in these sun-soaked destinations.
As summer transitions into fall, September stands out as a month of significant rainfall in Florida and Puerto Rico, recording an impressive 205 mm (8.1 in) of precipitation. This marks a notable peak compared to previous months, illustrating a dramatic surge in rainfall as the region experiences increased moisture from tropical systems. The frequency of rain also rises, with 26 days of precipitation, signaling an almost daily occurrence of wet weather. This trend suggests that just when the warmth of summer would typically linger, the onset of fall brings with it not only cooler temperatures but also the height of the rainy season, setting the stage for the lush landscapes that characterize these regions. As we look at the rainfall patterns throughout the year, September's downpours are a crucial contributor to overall annual totals, outpacing the typically drier months and underscoring the dynamic climate of this vibrant area.
September in Florida and Puerto Rico witnesses a slight dip in humidity, averaging 79%, as summer begins to yield to the fall season. This marks a gradual decrease from the peak months of July and August, which see humidity levels reaching 80%. Interestingly, the trend indicates a consistent high humidity range from June to September, hovering around 77% to 80%, contributing to the tropical feel of the region. As the year progresses into October and beyond, humidity levels remain relatively steady, only dipping slightly to 78%. This pattern underscores the region's characteristic warm, humid climate, making September a transitional month while still retaining significant moisture in the air.
In September, Florida and Puerto Rico experience a consistently high UV Index of 13, placing it in the extreme exposure category with a burn time of just 10 minutes. This trend mirrors the previous summer months, where similar levels were recorded, emphasizing the need for sun safety practices. As we transition from the high summer heat, it’s crucial to remain vigilant about UV exposure, especially considering that the UV Index also remains high in October at 12. With the intense sun persisting, residents and visitors should stay informed and protected. For more insights on UV levels, check out Florida UV Index.
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As summer transitions into fall, September brings a delightful mix of warmth and sun to Florida and Puerto Rico, boasting 311 hours of sunshine. This is a slight decline from the peak of 356 hours in May, but still represents a substantial amount of sun compared to the winter months. The consistent sunshine throughout the year, peaking in late spring and gradually easing into the fall, reflects an inviting climate perfect for beach days and outdoor activities. With October similarly enjoying 310 hours of sunshine, the trend hints at an extended summer feel, making these tropical destinations enviable havens for sun-seekers even as the seasons change.
In September, Florida and Puerto Rico experience a 43% chance of sunny weather, consistent with the preceding and following months, making it a transitional time for both regions. This moderate likelihood forms part of a trend where the sunshine percentages dip in the summer months, particularly in June, July, and August, when tropical storms can affect clear skies. Meanwhile, as the weather starts shifting toward fall, sunshine returns to its more typical ranges, reminiscent of the drier months from November to December. So, if you're planning a trip during September, expect a blend of sunny moments and the charming unpredictability of early autumn weather.
In September, both Florida and Puerto Rico enjoy 12 hours of daylight, continuing a trend initiated earlier in the spring and summer months. As the summer sun begins to wane, daylight duration remains stable, matching the length seen in March and April. This consistent lighting leads into the fall season, where the days gradually shorten, dropping to 11 hours by October. Overall, September represents a harmonious balance of light, bridging the vibrant energy of summer with the cooler, calmer days ahead. As you experience this month, the equal mix of warmth and light creates an inviting backdrop for outdoor activities and exploration.
As the summer fades and September settles in Florida and Puerto Rico, the winds notably calm down, with average speeds dropping to 2.1 m/s (5 mph)—the lowest of the year. This gentle breeze comes after a series of months where speeds ranged from 2.4 m/s in April to as high as 3.6 m/s in July. The transition to autumn marks a shift not just in temperature, but in the atmosphere itself; the once lively gusts give way to a more tranquil ambiance. As October approaches, wind speeds only slightly increase to 2.3 m/s, reinforcing the trend of mellowness that September introduces, inviting residents and visitors alike to bask in the serene beauty of the season. Overall, September's breezy lull serves as a gentle reminder of the seasonal change, creating a perfect backdrop for coastal relaxation.
Weather in Florida varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Florida, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January offer contrasting weather experiences. In September, temperatures range from a minimum of 22°C (72°F) to a maximum of 32°C (90°F), with an average of 26°C (79°F). The month is characterized by high humidity at 79% and significant rainfall, totaling 205 mm (8.1 in) over 26 days. Conversely, January is much cooler, with temperatures ranging from 15°C (59°F) to 28°C (84°F) and an average of 23°C (74°F). Precipitation is significantly lower, at just 38 mm (1.5 in) over 12 days, while humidity remains relatively stable at 76%. For more detailed information on January conditions, you can visit Florida weather in January.
September and February showcase distinct weather patterns in terms of temperature, precipitation, and humidity. September tends to be warmer, with average temperatures ranging from a minimum of 22°C (72°F) to a maximum of 32°C (90°F), while February is cooler, with average temperatures from 18°C (64°F) to 29°C (85°F). Precipitation levels also vary significantly, with September receiving 205 mm (8.1 in) of rain over 26 days, compared to February's much lighter 42 mm (1.7 in) over just 12 days. Additionally, humidity is slightly higher in September at 79%, compared to 75% in February. For more details on February weather, you can visit Florida weather in February.
When comparing the weather of September and March, it’s clear that September tends to be warmer and wetter. In September, temperatures range from a minimum of 22°C (72°F) to a maximum of 32°C (90°F), with an average of 26°C (79°F). The month experiences significant rainfall, totaling 205 mm (8.1 inches) over 26 days, accompanied by high humidity at 79%. In contrast, March features slightly cooler temperatures, with a minimum of 18°C (64°F), an average of 23°C (74°F), and a maximum of 30°C (86°F). Rainfall in March is also considerably less, with only 88 mm (3.4 inches) over 16 days, and humidity levels are lower at 74%. For more detailed insights on Florida's weather in March, check out Florida weather in March.
When comparing the weather in September and April, notable differences emerge in temperature and precipitation. September tends to be warmer, with average temperatures of 26°C (79°F) and maximums reaching up to 32°C (90°F), while April's temperatures average around 24°C (75°F) with a maximum of 30°C (86°F). Additionally, September experiences significantly more rainfall, with 205 mm (8.1 in) over 26 days, compared to April's 87 mm (3.4 in) over just 18 days. Humidity remains relatively high in both months, with September at 79% and April slightly lower at 75%. For a detailed look at seasonal weather patterns, you can check out Florida weather in April.
In comparing September and May weather, both months exhibit warm temperatures, with September slightly edging out May in the average and maximum temperatures. September has a minimum of 22°C (72°F) and averages 26°C (79°F), while May's minimum is 21°C (69°F) with an average of 25°C (77°F). However, September experiences significantly higher precipitation at 205 mm (8.1 in) over 26 days, compared to May's 104 mm (4.1 in) over just 21 days. Humidity is also slightly higher in September at 79%, compared to May's 75%. For more details on the weather in May, you can refer to Florida weather in May.
In comparing the weather of September and June, we see some similarities as well as notable differences. Both months have a similar average temperature, hovering around 26°C (79°F), but September tends to be slightly warmer with maximum temperatures reaching up to 32°C (90°F) compared to June's maximum of 31°C (88°F). Precipitation is significantly higher in September, with 205 mm (8.1 inches) spread across 26 days, while June experiences only 96 mm (3.8 inches) over 18 days. Additionally, September is slightly more humid, boasting a humidity level of 79%, compared to June's 77%. For more insights on the weather during this period, you can visit Florida weather in June.
In comparing the weather of September and July, both months feature similar temperature ranges, with minimums around 22°C (71-22°F) and maximums reaching up to 32°C (89-90°F). However, September tends to be considerably wetter, receiving 205 mm (8.1 in) of precipitation over 26 days, while July has only 104 mm (4.1 in) over 20 days. Humidity levels are slightly lower in July at 80%, compared to September's 79%. For more insights on July's weather specifics, you can visit Florida weather in July.
In comparing the weather patterns of September and August, both months exhibit similar temperature ranges, with minimums at 22°C (72°F), averages around 26°C (79°F for September and 80°F for August), and maximums reaching 32°C (90°F). However, September experiences significantly higher precipitation, with 205 mm (8.1 in) falling over 26 days, compared to August's 111 mm (4.4 in) over 20 days. This increased rainfall in September is coupled with a slight decrease in humidity, recorded at 79% compared to August's 80%. For a more detailed look at August weather, consider visiting Florida weather in August.
September and October exhibit similar warm temperatures, with September featuring slightly higher averages. In September, the minimum temperature is around 22°C (72°F), rising to a maximum of 32°C (90°F), while October sees a minimum of 21°C (70°F) and a similar maximum of 32°C (89°F). Precipitation decreases from 205 mm (8.1 in) over 26 days in September to 171 mm (6.7 in) across 25 days in October, suggesting a slight reduction in rainy days. Both months maintain high humidity levels, but October is marginally drier and cooler than its predecessor. For more detailed insights, check out Florida weather in October.
In September, the weather is characterized by warmer temperatures, with a minimum of 22°C (72°F) and an average of 26°C (79°F), reaching a maximum of 32°C (90°F). The month also sees significant rainfall, totaling 205 mm (8.1 in) over 26 days, and maintaining a high humidity level of 79%. In contrast, November brings slightly cooler temperatures, with a minimum of 19°C (67°F), an average of 25°C (77°F), and a maximum of 30°C (87°F). Precipitation decreases to 116 mm (4.6 in) over just 18 days, and humidity remains relatively stable at 78%. For more detailed information on November weather, visit Florida weather in November.
September and December showcase distinct weather patterns. In September, temperatures range from a minimum of 22°C (72°F) to a maximum of 32°C (90°F), with an average of 26°C (79°F). The month is characterized by high humidity at 79% and significant rainfall, totaling 205 mm (8.1 in) over 26 days. In contrast, December experiences slightly cooler temperatures with a minimum of 19°C (66°F) and a maximum of 30°C (86°F), averaging 24°C (75°F). It also sees much less precipitation, totaling only 39 mm (1.5 in) across 13 days, and a slightly lower humidity level of 76%. For more detailed insights, you can check out Florida weather in December.
In September, Florida's weather showcases a unique blend of warmth and humidity that sets it apart from other months. The highs reach a sizzling 32°C, while the average temperature hovers around a comfortable 26°C. However, this month is also marked by a notable increase in rainfall, with precipitation occurring on a substantial 26 days, leading to a total of 205 mm of rain. This combination of heat and frequent showers creates a tropical environment that's both vibrant and lush, though it can feel quite sticky due to the elevated humidity levels of about 79%. As you plan your activities, it's essential to keep in mind that September weather differs significantly from the drier months that precede and follow it. To learn more about what to expect throughout the year, visit Florida Climate.