Last updated: February 24, 2025
In September, Saint Augustine experiences a vibrant mix of warmth and moisture, with average temperatures hovering around 27°C (81°F) and maximums reaching 32°C (90°F). The pleasant climate invites outdoor activities despite the frequent rain, as the city receives approximately 155 mm (6.1 in) of precipitation over 16 days. With humidity levels at a high 83%, the air often feels heavier, contributing to a characteristic coastal atmosphere. Visitors can enjoy the balmy weather while being prepared for those intermittent tropical showers that lend a unique charm to this historic city.
In September, Saint Augustine experiences a delightful transition as summer lingers just a bit longer. With minimum temperatures averaging around 20°C (68°F), the warmth remains inviting, while the average daily temperature settles at a comfortable 27°C (81°F). This month noteworthy stands out with daytime highs reaching up to 32°C (90°F), ensuring plenty of sunshine for outdoor activities and coastal adventures. The gradual cooling that begins in September hints at the approaching autumn, yet the heat remains palpable, maintaining the vibrant atmosphere of this historic city. As summer's grip starts to loosen, it's an ideal time to explore the charming streets and pristine beaches, basking in the lingering warmth before the cooler months set in.
September in Saint Augustine marks a significant peak in precipitation, with 155 mm (6.1 in) of rainfall over 16 days. This surge is a contrast to the relatively drier earlier months, reinforcing the trend of late summer and early fall as a time for heavy rain. After a steady increase beginning in June, September stands out as the month with the highest rainfall, likely influenced by tropical weather patterns. Following this deluge, precipitation begins to taper off slightly in October, suggesting a transition into the drier months ahead, yet still remains substantial at 130 mm (5.1 in). This rhythm of rainfall underscores the climatic dynamics of the region, where the interplay of seasons sets the stage for both lush landscapes and the potential for brief, intense storms.
In September, Saint Augustine experiences a return to its higher humidity levels, registering at 83%. This marks a notable consistency with the preceding months of August, which also saw humidity at 81%, and January, reflecting the area's tropical climate. The transition from summer to autumn brings a slight increase from the lower humidity levels recorded earlier in the year, particularly in April and May, when the figures dropped to 70% and 68%, respectively. As the year progresses into October, humidity gently tapers to 81%, maintaining that characteristic dampness typical of this coastal city. With September's humidity, visitors can expect a warm, humid atmosphere that defines the charm of Saint Augustine during this time of year.
As September rolls into Saint Augustine, the UV Index remains a steadfast 11, placing it in the extreme exposure category, just like the previous summer months. This consistency highlights the sun's relentless strength as we transition from the heat of summer to the cooler tones of autumn. With a burn time of only 10 minutes, it's imperative for residents and visitors alike to prioritize sun protection, ensuring they stay safe while enjoying the beautiful outdoor settings. This trend of high UV exposure continues from the intense summer months, underscoring the importance of vigilance against sunburn. For those looking to plan their outdoor activities, understanding this UV landscape is crucial. For more detailed information on UV levels throughout the year, visit Saint Augustine UV Index.
UV Risk Categories
September in Saint Augustine shines brightly with 302 hours of sunshine, marking a delightful transition from the sun-soaked peak of summer. As the days begin to shorten after July's impressive 338 hours, September maintains a robust glow, reminiscent of the vibrant energy that captures the city's coastal charm. This month stands in harmonious balance with the late summer vibes, just slightly overshadowed by the outgoing warmth, as well as the incoming autumn hues. With sunlight gradually tapering into the cooler months of October and November, the enduring light of September serves as a beautiful reminder of the lingering summer spirit and the stunning sunsets that paint the sky.
In Saint Augustine, the likelihood of sunny weather in September shows a moderate trend with a 39% chance of sunshine. This aligns with a gradual increase from the summer months, where the sun's presence wanes significantly in July and August with only 24% and 18% respectively. As the city transitions into fall, the sunny probabilities begin to climb again, reaching 47% by October. While September's sunshine chance is lower compared to the spring and early summer months, it remains favorably positioned, making it an appealing time for outdoor activities and exploring the historic charm of this coastal gem.
As summer fades into fall in Saint Augustine, September brings a delightful shift in daylight duration, with an average of 12 hours of sunlight. This marks a decrease from the sun-drenched 14 hours of June, gradually leading into the shorter days of autumn. The trend showcases a transition from the long, vibrant days of summer to a more moderate light schedule, allowing residents and visitors to enjoy the rich hues of early fall without the sting of excessive heat. With daylight hours reducing further into the coming months, September offers a harmonious blend of warmth and light, making it a wonderful time to explore this historic city.
As September arrives in Saint Augustine, the winds begin to soften, showcasing an average wind speed of 3.9 m/s (9 mph). This slight dip marks a transition from the gustier summer months, where wind speeds hovered around 4.1 m/s to 4.2 m/s in July and August. Interestingly, the breezy spring months set a higher pace, with speeds peaking at 5.6 m/s (13 mph) in March. Following the vibrant summer, the gentle September zephyr invites a calmer atmosphere, paving the way for the brisker winds of autumn that follow in October and November. As the year progresses, wind patterns in this charming coastal town highlight a notable ebb and flow, reflecting the region's dynamic climate.
The weather in Saint Augustine 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 Saint Augustine and find detailed weather information for every month.
September weather is characterized by warm temperatures, with minimums around 20°C (68°F) and averages peaking at 27°C (81°F), while maximums can reach up to 32°C (90°F). This month also experiences significant rainfall, averaging 155 mm (6.1 in) over 16 days. In contrast, January brings much cooler conditions, with minimum temperatures dropping to 1°C (34°F) and average temperatures around 15°C (59°F), maxing out at 24°C (75°F). Precipitation in January is notably lower, with only 55 mm (2.2 in) occurring over just 5 days. Notably, humidity remains consistent at 83% in both months, contributing to the overall dampness. For more specific details about January conditions, check out Saint Augustine weather in January.
September weather is characterized by warmer temperatures, with a minimum of 20°C (68°F), an average of 27°C (81°F), and a maximum of 32°C (90°F). It is also quite humid at 83% and often experiences significant rainfall, totaling 155 mm (6.1 in) over 16 days. In contrast, February brings much cooler conditions, with a minimum temperature of 6°C (43°F), an average of 17°C (62°F), and a maximum of 24°C (75°F). Precipitation is lighter in February, averaging 78 mm (3.1 in) over 11 days, and the humidity remains relatively consistent at 80%. For more detailed information on February weather in this region, you can check out Saint Augustine weather in February.
In September, temperatures are notably warmer, with minimums around 20°C (68°F) and averaging 27°C (81°F), peaking at 32°C (90°F). The month also experiences considerable rainfall, averaging 155 mm (6.1 in) over 16 days, accompanied by high humidity levels at 83%. In contrast, March offers a more temperate climate, where minimum temperatures drop to 7°C (44°F), with an average of 18°C (65°F) and maximums reaching 26°C (79°F). Rainfall is significantly lower in March, totaling 46 mm (1.8 in) over just 6 days, and humidity is also reduced to 75%. For more detailed information, check out Saint Augustine weather in March.
Comparing the weather in September and April reveals notable differences in temperature and humidity. In September, temperatures are warmer, with a minimum of 20°C (68°F) and an average of 27°C (81°F), reaching a peak of 32°C (90°F). This period also experiences higher humidity, averaging 83%, and a greater amount of rainfall, totaling 155 mm (6.1 in) over 16 days. In contrast, April features milder conditions with a minimum temperature of 11°C (52°F), an average of 21°C (70°F), and a maximum of 27°C (82°F). The humidity is more comfortable at 70%, and there is significantly less precipitation, with only 81 mm (3.2 in) over 8 days. For more details about April's climate, you can visit Saint Augustine weather in April.
When comparing the weather in September and May, notable differences emerge. September typically experiences warmer temperatures, with a minimum of 20°C (68°F) and an average of 27°C (81°F), while May's temperatures range from a cooler minimum of 15°C (60°F) to an average of 24°C (75°F). Additionally, September is characterized by higher humidity levels at 83% compared to May's 68%, contributing to a muggy atmosphere. Precipitation is also more prevalent in September, with 155 mm (6.1 in) falling over 16 days, in stark contrast to May's milder 58 mm (2.3 in) over just 6 days. For more details on May's weather, you can visit Saint Augustine weather in May.
September and June exhibit notable differences in weather patterns. In September, temperatures range from a minimum of 20°C (68°F) to a maximum of 32°C (90°F), averaging around 27°C (81°F). This month also tends to be wetter, with a total precipitation of 155 mm (6.1 in) spread over 16 days and a higher humidity level of 83%. In contrast, June offers slightly warmer conditions with minimum temperatures of 22°C (71°F) and a maximum of 31°C (88°F), averaging 26°C (79°F). The precipitation in June is less, totaling 88 mm (3.5 in) over 14 days, with humidity at a relatively lower level of 75%. For a more detailed look, check out Saint Augustine weather in June.
In comparing the weather between September and July, both months exhibit similar average temperatures around 27°C (81°F), but there are distinct differences in their overall climate. July features slightly warmer minimum temperatures at 24°C (75°F) and a maximum of 31°C (89°F), whereas September starts off warmer at a minimum of 20°C (68°F) and peaks at 32°C (90°F). However, September experiences higher precipitation levels with 155 mm (6.1 in) over 16 days compared to July's 112 mm (4.4 in) on the same number of days. Additionally, September's humidity is higher at 83%, while July maintains a slightly lower 79%. For further insights specific to July, you can check Saint Augustine weather in July.
In comparing the weather of September to August, we see some notable differences. September tends to have a slightly lower minimum temperature of 20°C (68°F) compared to August's minimum of 25°C (76°F), yet both months maintain the same average temperature of 27°C (81°F) and maximum temperature of 32°C (90°F). Rainfall in September is significantly higher, with 155 mm (6.1 in) of precipitation over 16 days, while August experiences only 91 mm (3.6 in) of precipitation, also over 16 days. Humidity levels are slightly elevated in September at 83%, compared to August’s 81%. For a more detailed view of the weather patterns, check out the Saint Augustine weather in August.
September typically experiences warmer temperatures with averages around 27°C (81°F) and peaks reaching up to 32°C (90°F). In contrast, October sees a noticeable drop in minimum temperatures, dipping to 12°C (54°F) but still offering a pleasant average of 25°C (77°F). While both months have the same number of rainy days (16), October has slightly lower precipitation at 130 mm (5.1 in) compared to September's 155 mm (6.1 in), and the humidity also decreases slightly from 83% to 81%. For more details, you can check Saint Augustine weather in October.
September and November present quite a contrast in weather patterns. In September, temperatures are generally warm, with minimums around 20°C (68°F) and maximums reaching 32°C (90°F), while the average sits at 27°C (81°F). The month is also characterized by higher precipitation, totaling 155 mm (6.1 in) over 16 days, and humidity levels are on the high side at 83%. In contrast, November brings cooler temperatures, with a minimum of 7°C (45°F) and a maximum of 28°C (83°F), resulting in a more comfortable average of 20°C (69°F). Precipitation decreases to 107 mm (4.2 in) over 10 days, and humidity slightly drops to 82%. This transition marks a significant shift from the warmth and humidity of September to the milder, drier conditions of November. For a more detailed outlook, visit Saint Augustine weather in November.
In September, the weather is characterized by warm temperatures, with a minimum of 20°C (68°F) and an average high of 32°C (90°F). This month also experiences high precipitation levels, with around 155 mm (6.1 in) falling over 16 days, contributing to a humid atmosphere at 83%. In contrast, December brings a significant drop in temperature, with a minimum of 5°C (41°F) and an average high of 24°C (75°F). The precipitation is lower at 85 mm (3.3 in) over just 10 days, and humidity remains relatively stable at 84%. For more detailed information, check out the Saint Augustine weather in December.
As September arrives in Saint Augustine, visitors can expect warm temperatures that are still quite pleasant, with the average hovering around 27°C (81°F), creating an inviting atmosphere for outdoor activities. However, this month also marks a shift, bringing along higher humidity levels and increased rainfall, with about 16 days of precipitation contributing to an average of 155 mm. This combination often makes the air feel warmer and a bit stickier compared to the drier summer months, so be prepared for those occasional showers that grace the city's historic charm. For a deeper dive into the overall weather patterns, check out the full details at Saint Augustine Climate.