Last updated: February 24, 2025
In September, Deerfield Beach, United States, experiences warm and humid weather, with maximum temperatures reaching 33°C (92°F). The average temperature hovers around 28°C (83°F), while the nights cool down to a comfortable 24°C (76°F). This month is characterized by significant precipitation, totaling 193 mm (7.6 in) over 22 days, making rain a common occurrence. With humidity levels peaking at 83%, visitors can expect a tropical atmosphere, ideal for those who enjoy a vibrant seaside experience despite the occasional downpour.
In September, Deerfield Beach enjoys warm and inviting temperatures, with daily averages around 28°C (83°F). The month typically begins with a minimum temperature of 24°C (76°F), ensuring that the balmy evenings are perfect for beach strolls. As summer wanes, the maximum temperature can still reach up to 33°C (92°F), offering plenty of sun-soaked days for outdoor activities. This transition into fall marks a subtle decrease in heat compared to the sweltering July and August months, yet still retains that tropical charm. As autumn approaches, the lingering warmth creates a pleasant atmosphere for those looking to savor the last days of summer by the water.
September marks a significant peak in Deerfield Beach's precipitation patterns, with 193 mm (7.6 in) of rain falling over an impressive 22 days. This increase is part of a gradual upward trend throughout the summer months, where rainfall elevates alongside humidity and temperatures. Notably, September's precipitation surpasses all other months of the year, reinforcing its position as the climax of the wet season. While August also experiences heavy rainfall, September brings a slight uptick, indicating a continued influence from seasonal storms. As the rainy season gradually transitions, residents can expect fewer rain-soaked days in October, with a notable drop to 157 mm (6.2 in) of precipitation, hinting at the coming dry spell.
In September, Deerfield Beach experiences a noticeable uptick in humidity, reaching 83%, which ties with the levels seen in January and October. This marks a slight increase from August's 80%, indicating that the summer warmth lingers a bit longer, enveloping residents and visitors in a tropical embrace. Notably, the humidity has been on a gradual decline since April, where it peaked at 68%, only to rebound during the closing months of the year. The consistent humidity levels throughout the fall months suggest a persistent moisture in the air, characteristic of the region’s tropical climate. As the year closes out, the humidity remains a defining feature of Deerfield Beach, creating a humid yet inviting atmosphere that captures the essence of the coastal lifestyle.
In Deerfield Beach, September sees a notable UV Index of 11, categorized as extreme, meaning sun exposure can lead to skin burns in just 10 minutes. This month continues the trend established in the summer, where UV levels peaked at 12, reflecting the region's intense sun during the warmer months. As the year progresses, UV Index values gradually decrease, dropping to 10 in October, indicating a slight relief from the harsh sun. Overall, however, sunscreen and protective measures remain essential throughout September to safeguard against harmful UV rays. For more detailed insights on UV levels year-round, check out the Deerfield Beach UV Index.
UV Risk Categories
As summer gracefully transitions into fall, September in Deerfield Beach continues to bask in the sun, offering 315 hours of glorious sunlight. This month marks a slight dip from the peak of July and August, yet it still holds onto the vibrant warmth that characterizes South Florida. Notably, September's sunlight is just a hair below the abundant hours seen earlier in the year, reinforcing the area's reputation for generous sunshine year-round. As temperatures begin to cool slightly, residents and visitors can relish in this pleasant mid-month glow, perfect for beach outings and outdoor adventures before the year draws to a close. The pattern of sunlight hours, peaking in the summer and gradually waning towards winter, indicates a gentle seasonal shift, embracing the beauty of coastal living.
In Deerfield Beach, the likelihood of sunny weather in September dips to 32%, marking a noticeable decline after the summer months. This trend can be observed as the sunny days start to wane following the peak warmth of June (15%) through August (24%). As the season transitions into autumn, September's probabilities reflect a shift towards cloudier, often stormier conditions. Looking ahead, there’s a moderate increase in sunshine expected in October (45%), suggesting that the sunny days return as the weather cools. Overall, while September may not bring the brightest skies, it remains a tantalizing prelude to the sunnier fall days ahead.
As September rolls in, Deerfield Beach experiences a subtle shift in daylight, offering approximately 12 hours of sunshine. This marks a gentle decline from the 13 hours enjoyed during the summer months, as daylight begins to wane in anticipation of fall. The trend reflects a consistent pattern throughout the year, where the longest days are enjoyed in the summer, gradually tapering off to around 10 hours by winter. This rhythm not only influences the local activities but also enhances the natural beauty of the area, as golden sunsets become more frequent, inviting residents and visitors alike to savor the changing seasons.
As summer transitions into fall, September brings a noticeable drop in wind speeds to Deerfield Beach. With an average wind speed of only 2.4 m/s (5 mph), this month marks the calmest point of the year, a stark contrast to the earlier months where breezes hovered around 3.1 to 5.0 m/s. This decline reflects a shift in seasonal patterns, as the balmy, relaxed atmosphere encourages outdoor activities without the interruption of stronger winds. Residents and visitors alike can enjoy the serene beach environment, making September a perfect time for leisurely strolls along the shore or peaceful days spent soaking in the sun.
The weather in Deerfield 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 Deerfield Beach and find detailed weather information for every month.
September and January present a striking contrast in weather patterns. In September, temperatures range from a minimum of 24°C (76°F) to a maximum of 33°C (92°F), with an average temperature of 28°C (83°F). This month also sees significant rainfall, accumulating to 193 mm (7.6 in) over 22 days, while humidity remains high at 83%. In contrast, January offers much cooler temperatures, with a minimum of 6°C (44°F) and a maximum of 29°C (85°F), averaging 21°C (70°F). Precipitation decreases significantly to 38 mm (1.5 in) occurring over just 7 days, while humidity levels remain constant at 83%. For a detailed look at the January weather, you can visit Deerfield Beach weather in January.
September and February present stark contrasts in weather patterns. September features warmer temperatures, with a minimum of 24°C (76°F), averaging around 28°C (83°F), and peaking at 33°C (92°F). The month is also characterized by significant precipitation, totaling 193 mm (7.6 in) across 22 days, along with high humidity levels at 83%. In contrast, February offers a cooler climate, with temperatures dipping to a minimum of 9°C (49°F) and averaging 23°C (74°F), reaching a maximum of 29°C (84°F). This month experiences considerably less precipitation, accumulating only 56 mm (2.2 in) over 12 days, along with slightly lower humidity at 80%. For more detailed insights, you can check out Deerfield Beach weather in February.
In comparing the weather of September and March, September is characterized by much higher temperatures, with average highs reaching 33°C (92°F) and humidity levels at 83%, creating a hot and humid atmosphere. In contrast, March offers a more moderate climate, with average temperatures around 23°C (74°F) and lower humidity at 75%, making it more comfortable for outdoor activities. Additionally, September experiences significantly more rainfall, with 193 mm (7.6 in) over 22 days, while March has a much drier profile, receiving only 37 mm (1.5 in) over 7 days. For a detailed look at what to expect during March, check out Deerfield Beach weather in March.
September and April present contrasting weather patterns, with September characterized by higher temperatures and humidity. In September, temperatures range from a minimum of 24°C (76°F) to a maximum of 33°C (92°F), with an average of 28°C (83°F). The month also sees significant rainfall, totaling 193 mm (7.6 in) over 22 days, contributing to a humidity level of 83%. In contrast, April offers a more moderate climate, with temperatures dropping to a minimum of 15°C (59°F) and averaging 25°C (77°F), while still reaching similar maximums of 33°C (92°F). Rainfall is significantly lower at 83 mm (3.2 in) over just 12 days, and humidity is more comfortable at 68%. For a detailed look at April's weather, check out Deerfield Beach weather in April.
When comparing the weather in September and May, September tends to be warmer and more humid. September features a minimum temperature of 24°C (76°F) and an average of 28°C (83°F), with maximums reaching up to 33°C (92°F). Additionally, rainfall is more frequent in September, with precipitation occurring on 22 days, totaling 193 mm (7.6 in) and humidity at a high 83%. In contrast, May experiences slightly cooler temperatures, with a minimum of 19°C (66°F) and an average of 26°C (79°F), peaking at 31°C (89°F). Rainfall in May is less intense, with 160 mm (6.3 in) spread over 18 days and a noticeably lower humidity level of 65%. For more detailed weather insights for this month, you can check Deerfield Beach weather in May.
In comparing the weather between September and June, both months exhibit similar temperature ranges, with minimums around 24°C (75°F - 76°F), average temperatures of about 28°C (82°F - 83°F), and maximums reaching close to 33°C (91°F - 92°F). However, September typically experiences higher humidity at 83%, compared to June's 73%, making September feel more humid. Additionally, September tends to see more rainfall, with 193 mm (7.6 in) of precipitation over 22 days, while June has slightly less at 179 mm (7.0 in) spread over 23 days. For a detailed look at June's weather, you can visit Deerfield Beach weather in June.
In comparing the weather of September and July, both months experience similar minimum and average temperatures, with minimums at 24°C (76°F) and averages around 28°C (83°F). However, July tends to be slightly warmer, reaching a maximum of 34°C (93°F) compared to 33°C (92°F) in September. Precipitation is more pronounced in September, with 193 mm (7.6 in) over 22 days, compared to July's 162 mm (6.4 in) over 25 days. Additionally, September is more humid at 83% compared to July's 77%. For a detailed look at July weather, you can check Deerfield Beach weather in July.
In comparing the weather between August and September, we see that both months maintain a warm climate with minimum temperatures consistently around 24°C (76°F). However, September has a slightly lower average temperature of 28°C (83°F) compared to August’s 29°C (84°F). Despite this, September experiences higher maximum temperatures, reaching up to 33°C (92°F), while August peaks at 32°C (91°F). Additionally, September has more precipitation with 193 mm (7.6 in) over 22 days, as opposed to August’s 165 mm (6.5 in) across 25 days, and a higher humidity level of 83% compared to 80% in August. For more details, visit Deerfield Beach weather in August.
In comparing the weather between September and October, we notice a significant drop in minimum temperatures, with September starting at 24°C (76°F) while October lowers to 14°C (58°F). Despite this cooler start, October maintains a pleasant average temperature of 27°C (81°F) and a maximum of 31°C (88°F), which is slightly lower than September's highs. Rainfall also decreases from 193 mm (7.6 in) over 22 days in September to 157 mm (6.2 in) over 21 days in October, indicating a slight reduction in precipitation. Notably, humidity levels remain constant at 83% in both months, making the atmosphere feel similarly humid. For more detailed information on the weather in this period, check out Deerfield Beach weather in October.
September features warmer temperatures, with a minimum of 24°C (76°F) and average highs reaching up to 33°C (92°F), making it a hotter month overall. In contrast, November sees a notable drop in temperatures, with minimums down to 11°C (52°F) and an average high of 30°C (86°F). Precipitation is also significantly reduced in November, decreasing from 193 mm (7.6 in) over 22 days in September to just 99 mm (3.9 in) across 15 days. Despite the cooler temperatures and lower rainfall, humidity levels remain consistent at 83% in both months. For more detailed insights, you can check Deerfield Beach weather in November.
In September, the weather is typically hot and humid, with temperatures ranging from a minimum of 24°C (76°F) to a maximum of 33°C (92°F) and an average temperature of 28°C (83°F). The month also experiences significant rainfall, totaling 193 mm (7.6 in) over 22 days, resulting in a high humidity level of 83%. In contrast, December brings much cooler and drier conditions, with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 29°C (85°F) and an average of 22°C (72°F). Precipitation decreases significantly to 45 mm (1.8 in) over just 10 days, while humidity remains fairly consistent at 84%. For a more detailed overview, check out Deerfield Beach weather in December.
As summer fades, September ushers in a unique climate for Deerfield Beach, characterized by higher humidity and frequent rainfall. While daytime temperatures remain warm, averaging around 28°C (83°F), the increased precipitation—spanning across 22 days—sets this month apart from the drier months of the year. This shift in weather not only adds a tropical feel but also influences outdoor activities, making it essential for visitors and locals alike to be prepared for the occasional downpour. For a deeper understanding of how these conditions interact throughout the year, check out Deerfield Beach Climate.