Last updated: February 24, 2025
September in Riviera Beach, United States, welcomes warm temperatures that create a tropical ambiance. With maximum highs reaching 33°C (91°F) and an average of 28°C (83°F), the month provides a delightful escape for sun-seekers. However, visitors should be prepared for the higher humidity at 83%, which accentuates the heat. This month is also marked by significant precipitation, totaling 189 mm (7.4 in) over 24 days, making occasional rain a common occurrence. Despite the showers, the warm climate remains inviting, ideal for enjoying beach activities interspersed with refreshing breaks from the sun.
In September, Riviera Beach basks in the lingering warmth of late summer, with temperatures maintaining a lively average of 28°C (83°F). The month experiences a minimum of 25°C (76°F) at night, providing a comfortable backdrop for evening strolls along the waterfront. As the days grow hotter, peaking at a sizzling 33°C (91°F), the beach scene remains vibrant and inviting. This transitional period showcases a inviting balance of warmth and cooling breezes, making it an ideal time to enjoy both sun-soaked days and pleasant nights before the cooler autumn air sets in.
September in Riviera Beach, United States, continues the trend of substantial rainfall, with 189 mm (7.4 in) recorded over 24 days. This month stands out as one of the wetter periods, just behind the peak of August's 202 mm (8.0 in). The late summer transition into fall sees a shift as precipitation begins to slightly decrease in October, where 159 mm (6.3 in) is expected over fewer rainy days. Despite this decrease, September maintains a robust wetness that mirrors the overall pattern established during the summer months, suggesting a lingering tropical influence. With the rainfall now dispersing across the changing seasons, the balance of sun and showers characteristics of Riviera Beach's climate remains captivating for residents and visitors alike.
In Riviera Beach, United States, September marks the return of heightened humidity levels, peaking at 83%, mirroring the conditions of January and October. This increase follows a slight drop during the warmer summer months, where humidity fell to a low of 65% in May before gradually climbing back to similar levels seen at the year's start. As the seasons transition, the persistent muggy atmosphere of September sets the stage for a gradual shift towards the cooler months, with humidity remaining consistently high throughout the fall. With November and December also recording humidity levels of 83% and 84%, it becomes evident that the coastal climate retains a remarkable moisture balance, maintaining a lush and vibrant ecosystem year-round.
In September, Riviera Beach experiences a UV Index of 11, categorizing the exposure as extreme with a burn time of just 10 minutes. This trend continues from the previous months, where the Index peaked at 12 during the summer, reflecting the area's intense sun exposure. As the year transitions into fall, the UV Index slightly decreases but remains considerably high, urging residents and visitors to stay vigilant about sun safety. Throughout the year, the data showcases notable peaks in the spring and summer, with winter months offering a reprieve, as the UV Index drops significantly. For a detailed look at UV levels throughout the year, visit Riviera Beach UV Index.
UV Risk Categories
September in Riviera Beach brings a delightful balance of sunshine, offering 317 hours of bright days that perfectly bridge the vibrant summer months and the cooler fall season. This month sees a slight dip from the summer peak of 341 hours in July, yet remains well above the hours seen earlier in the year. As summer's warmth lingers, September continues the trend of ample sunshine, providing residents and visitors alike the chance to savor outdoor activities against a backdrop of clear blue skies. With each month showcasing its unique appeal, September stands out as a transitional gem, inviting everyone to relish the last glimmers of summer before autumn sets in.
In Riviera Beach, the likelihood of sunny weather shows interesting trends throughout the year, with September experiencing a modest 33% chance of sunshine. This places it near the lower end of the spectrum when compared to other months. From January to April, there's a notable increase in sunshine probability, peaking at 64% in December, which suggests that the region enjoys a seasonal pattern of more sun as the year progresses. However, the summer months—particularly June through August—witness a sharp decline, with percentages dropping to between 17% and 23%. As September rolls in, residents can expect a slight uptick from the summer slump, but overall, the month remains among those with less favorable weather, hinting at the gradual shift towards the sunnier and drier days of fall.
As September arrives in Riviera Beach, daylight begins to wane, offering around 12 hours of sunlight—a subtle nod to the changing seasons. This month marks a transition from the summer’s peak sunlight, which captivated the skies with 13 hours of daylight throughout the summer months of June, July, and August. While September still enjoys a generous amount of sunshine, it signals the approach of autumn as the days grow shorter, gradually tapering off into the 11 hours of daylight expected in October. This gentle decline in daylight not only highlights the seasonal shift but also invites residents and visitors to seize the remaining sun-soaked days before the year’s end.
As September rolls in, residents and visitors of Riviera Beach can expect a noticeable softening in the winds, with average speeds dropping to a gentle 2.6 m/s (6 mph). This marks the lowest wind speed of the year, transitioning from the brisk breezes of summer that typically peak around June and July. After experiencing more lively winds in the earlier months, September embraces a tranquil atmosphere, perfect for beachgoers seeking calm waters and pleasant days. As the season shifts and autumn approaches, one can sense a subtle but soothing change, inviting moments of relaxation along the shores, amidst the fading summer warmth.
The weather in Riviera 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 Riviera Beach and find detailed weather information for every month.
September and January present striking contrasts in weather conditions. In September, temperatures are notably warmer, with a minimum of 25°C (76°F) and an average of 28°C (83°F), peaking at a high of 33°C (91°F). This month also experiences significant rainfall, with 189 mm (7.4 in) of precipitation over 24 days, leading to a humid environment of 83%. In contrast, January features much cooler temperatures, with a minimum of 7°C (45°F) and an average of 21°C (69°F), reaching a maximum of 28°C (83°F). The month is much drier, receiving only 43 mm (1.7 in) of rain over 7 days, while still maintaining the same humidity level of 83%. For more details, you can check Riviera Beach weather in January.
September and February present contrasting weather patterns. In September, temperatures range from a minimum of 25°C (76°F) to a maximum of 33°C (91°F), with an average of 28°C (83°F). This month also experiences significant rainfall, with 189 mm (7.4 in) occurring across 24 days, resulting in high humidity levels at 83%. Conversely, February enjoys milder temperatures, with a minimum of 11°C (51°F), an average of 22°C (72°F), and a maximum of 28°C (82°F). This month sees much less precipitation, totaling 54 mm (2.1 in) over just 9 days, while humidity remains slightly lower at 80%. For a more detailed look at February conditions, check out Riviera Beach weather in February.
In September, the weather is notably warmer and more humid, with temperatures ranging from a minimum of 25°C (76°F) to a peak of 33°C (91°F) and an average of 28°C (83°F). This month also experiences significant rainfall, with 189 mm (7.4 in) of precipitation falling over 24 days, resulting in a high humidity level of 83%. In contrast, March offers a much cooler climate, with temperatures starting at a minimum of 13°C (56°F) and reaching an average of 22°C (72°F), peaking at 30°C (85°F). Additionally, March sees far less rainfall, totaling only 36 mm (1.4 in) over just 7 days, and a slightly lower humidity level of 75%. For more detailed information, you can explore Riviera Beach weather in March.
When comparing the weather in September and April, notable differences emerge. September tends to be warmer, with average temperatures ranging from a minimum of 25°C (76°F) to a maximum of 33°C (91°F), while April’s temperatures are milder, peaking at around 32°C (90°F) but starting lower, with a minimum of 16°C (62°F). Additionally, September experiences significantly higher rainfall, totaling 189 mm (7.4 in) over 24 days, compared to April's 86 mm (3.4 in) over just 10 days. The humidity is also higher in September at 83%, compared to 68% in April, making April feel more comfortable overall. For more specifics on the April weather, you can visit Riviera Beach weather in April.
Comparing the weather in September and May reveals some notable differences. In September, the temperatures range from a minimum of 25°C (76°F) to a maximum of 33°C (91°F), with an average of 28°C (83°F). This month experiences higher humidity levels at 83% and significant rainfall, with an average of 189 mm (7.4 in) over 24 days. In contrast, May offers slightly cooler temperatures, with a minimum of 19°C (67°F) and a maximum of 31°C (88°F), averaging 26°C (78°F). Precipitation in May is less frequent, totaling 158 mm (6.2 in) over 17 days, and the humidity is lower at 65%. For those interested in specific conditions during May, more details can be found at Riviera Beach weather in May.
In comparing the weather of September and June, we find that September tends to be slightly warmer, with average temperatures reaching 28°C (83°F) compared to June's 27°C (81°F). While both months have similar maximum temperatures, September's minimum temperature of 25°C (76°F) is slightly higher than June's 23°C (75°F). Precipitation levels are higher in September, with 189 mm (7.4 in) over 24 days, while June records 215 mm (8.5 in) over 23 days. Interestingly, September has a higher humidity level at 83%, compared to 73% in June, creating a more muggy atmosphere as summer transitions into fall. For more detailed insights into conditions during June, you can check Riviera Beach weather in June.
When comparing the weather in September and July, both months exhibit strikingly similar temperature ranges, with minimum temperatures around 25°C (76°F), average temperatures at 28°C (83°F), and maximum temperatures peaking at 33°C (91°F). However, September tends to be slightly wetter, receiving about 189 mm (7.4 in) of precipitation over 24 days, while July has a bit more rain at 192 mm (7.6 in) over 29 days. Additionally, September's humidity is higher at 83%, compared to July's 77%, making September feel more muggy. For a closer look at July's weather specifics, you can check Riviera Beach weather in July.
In comparing the weather of September to August, both months experienced similar temperature ranges, with September showing a minimum of 25°C (76°F), an average of 28°C (83°F), and a maximum of 33°C (91°F). August had the same minimum but slightly higher average temperatures at 28°C (84°F) and a slightly lower maximum of 32°C (90°F). Precipitation levels were slightly lower in September, with 189 mm (7.4 in) over 24 days, compared to August's 202 mm (8.0 in) over 27 days. Humidity remained high in both months, at 83% in September and 80% in August. For more detailed insights, you can check Riviera Beach weather in August.
September in Riviera Beach brings warmer temperatures, with a minimum of 25°C (76°F) and an average of 28°C (83°F), while October sees a cooler minimum of 16°C (60°F). Both months experience relatively high humidity at 83%, but October's average temperature slightly dips to 27°C (81°F), making it feel a bit more comfortable. In terms of precipitation, September has higher rainfall at 189 mm (7.4 in) over 24 days compared to October's 159 mm (6.3 in) over 22 days. This transition from September to October marks a shift towards slightly drier conditions and cooler evenings. For more details on October weather, check out Riviera Beach weather in October.
In September, the weather is notably warmer, with temperatures ranging from a minimum of 25°C (76°F) to a maximum of 33°C (91°F) and an average of 28°C (83°F). The month experiences a significant amount of rainfall, accumulating 189 mm (7.4 in) over 24 days, creating a rather humid environment with humidity levels at 83%. In contrast, November brings a cooler climate, with minimum temperatures dropping to 12°C (53°F) while the maximum reaches 29°C (85°F), averaging around 24°C (76°F). Precipitation decreases substantially to 93 mm (3.6 in) across 15 days, maintaining the same humidity level of 83%. For a closer look at November's weather conditions, you can check out Riviera Beach weather in November.
September weather is significantly warmer and wetter compared to December. With minimum temperatures around 25°C (76°F) and an average high of 33°C (91°F), September experiences increased humidity at 83% and substantial rainfall, totaling 189 mm (7.4 in) over 24 days. In contrast, December brings a much cooler climate, with minimum temperatures dropping to 11°C (52°F) and an average high of 28°C (83°F). The precipitation levels are also lower, totaling just 48 mm (1.9 in) over 10 days, all while maintaining a similar humidity level of 84%. For a detailed look at December weather, you can check Riviera Beach weather in December.
September in Riviera Beach marks a transitional period, where the lingering warmth of summer gives way to the shifting dynamics of autumn. With high humidity and frequent rainfall, this month stands out for its lush, tropical vibe, creating a vibrant backdrop for both locals and visitors. While daytime temperatures remain pleasantly warm, the weather can often be unpredictable, as rain showers can occur on nearly 80% of the days. Compared to the drier and slightly cooler months that follow, September's weather embodies a balmy, yet rainy coastal experience, making it a unique time to enjoy the natural beauty of the area. For a more detailed understanding of the climate throughout the year, visit Riviera Beach Climate.