September Weather in Atlantic Beach, United States

Last updated: February 24, 2025

In September, Atlantic Beach experiences a delightful mix of warm temperatures and notable humidity, making it an appealing coastal getaway. With maximum highs reaching 32°C (90°F) and an average temperature of 25°C (77°F), visitors can enjoy sun-soaked days, though the evenings cool to a comfortable 15°C (59°F). Rain is a regular occurrence this month, with 214 mm (8.4 in) spread over 13 days, contributing to the lush, vibrant atmosphere. The average humidity hovers around 80%, creating a tropical feel that enhances the seaside charm. Whether basking in the sun or exploring the picturesque landscapes, September offers a unique blend of warmth and refreshment for beachgoers.

September Temperature in Atlantic Beach

As summer begins to wane, September in Atlantic Beach, United States, offers a delightful transition into autumn with temperatures remaining pleasantly warm. The month starts off with minimums around 15°C (59°F) and averages climbing to 25°C (77°F), peaking at 32°C (90°F), mirroring the lingering warmth of August. While days continue to invite beachgoers with sun-soaked afternoons, the nights begin to cool, hinting at the approaching fall. This fluctuation not only makes September an enjoyable time for outdoor activities but also signals a beautiful shift in the landscape, as the vibrant summer hues gradually yield to the earthy tones of autumn.

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

The chart illustrates September temperature patterns in Atlantic Beach, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec495355637177818077705953
Data source: Temperature data for Atlantic Beach generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Atlantic Beach

In September, Atlantic Beach experiences a notable increase in precipitation, with 214 mm (8.4 in) of rain over 13 days, making it one of the wettest months of the year. This peak follows a summer pattern where rainfall steadily rises from a moderate 154 mm (6.0 in) in July to 191 mm (7.5 in) in August. September's rainfall marks a significant uptick, setting the stage for the transition to fall. As summer fades, the increased precipitation can rejuvenate the local landscape, enhancing the beauty of the region. With this surge, September stands out in its role as a turning point in the annual climate cycle, intertwined with the lingering warmth of summer and the onset of autumnal changes.

September Precipitation Trends in Atlantic Beach

The chart displays monthly precipitation patterns in Atlantic 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.
JanFebMarAprMayJunJulAugSepOctNovDec821368310711415715419121482108148
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Atlantic Beach

In September, Atlantic Beach experiences a humidity level of 80%, marking a slight dip from the peak summer months, where humidity was consistently around 82-83%. This transition into autumn reflects a gradual decrease in moisture levels, a trend that continues into October with 79% humidity, hinting at the approaching cooler and drier months. The overall pattern throughout the year shows a high humidity range between 79% and 84%, with January and December typically showcasing the highest levels, whereas spring months maintain a more stable average. As the seasons shift, September presents a refreshing, albeit still humid, atmosphere, paving the way for the milder fall climate to follow.

September Average Humidity in Atlantic Beach

This chart illustrates the average monthly humidity levels in Atlantic 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.
JanFebMarAprMayJunJulAugSepOctNovDec84%81%80%80%81%82%83%83%80%80%83%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Atlantic Beach

As September rolls in at Atlantic Beach, the UV Index remains notably high, peaking at 9, categorizing sun exposure as very high. This trend reflects a gradual decline from the extreme levels reached in the summer months of June through August, where the UV Index consistently hovered at 11. With shorter burn times of just 15 minutes, September emphasizes the importance of sun protection despite the slight reduction in intensity. Following this month, the UV Index will continue to decrease into October, but for now, beachgoers should stay vigilant to protect their skin during these bright sunny days. For more details on the UV Index throughout the year, check out Atlantic Beach UV Index.

Maximum UV Index Levels in Atlantic Beach for September

The chart shows the monthly maximum UV Index (UVI) for Atlantic 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.
JanFebMarAprMayJunJulAugSepOctNovDec46810111111109854
Data source: Atlantic 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 Atlantic Beach

As summer fades to autumn, September in Atlantic Beach continues to bask in the warm embrace of sunshine, boasting an impressive 299 hours of bright skies. This month reflects a slight decline from the peak shine of July and August, but it remains vibrant, ensuring plenty of opportunities for outdoor activities and beach outings. With a steady increase in daylight hours from the dreary depths of winter, September stands out as a transitional beacon, bridging the long, sunlit days of summer with the cooler seasons ahead. The gentle warmth and ample sunshine make it a perfect time to savor the lingering summer vibes before autumn whispers its arrival.

Monthly Sunshine Duration in Atlantic Beach: September Highlighted

The September sunshine duration represents the total number of hours Atlantic 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.
JanFebMarAprMayJunJulAugSepOctNovDec179h208h279h312h333h324h338h323h299h291h235h212h
Data source: Atlantic Beach September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Atlantic Beach During September

September in Atlantic Beach ushers in a notable peak in sunshine, with a 57% chance of clear skies, tying it with April for the highest likelihood of sunny weather throughout the year. As summer fades, this vibrant coastal locale experiences a refreshing transition marked by pleasant temperatures and diminishing humidity, making it an inviting time for beachgoers and outdoor enthusiasts alike. The sunny trend continues into October, which maintains a commendable 47% chance of sunshine, hinting that while summer may be drawing to a close, the inviting rays of the sun linger just a little longer along the shores of Atlantic Beach.

Percentage of Sunny Days in September in Atlantic Beach

The chart illustrates the percentage of sunny days in Atlantic 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 Atlantic Beach experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec48%34%36%57%49%31%45%43%57%47%59%47%
Data source: Atlantic Beach September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Atlantic Beach in September

As summer transitions into fall, September in Atlantic Beach brings a shift in daylight, offering 12 hours of sunlight—a subtle decrease from the peak of 14 hours experienced in June and July. This reduction marks the beginning of the gradual descent towards winter, a pattern that persists through the cooler months. Following the vibrant warmth of summer, September still enjoys a generous amount of daylight, allowing for plenty of opportunities to relish the outdoors before the days grow shorter. With autumn on the horizon, the charming coastal landscape begins to transform, preparing for the seasonal shifts ahead.

Average Daylight Hours in Atlantic Beach for September

The chart illustrates the variation in daylight duration in Atlantic 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 6m10h 56m11h 59m13h 4m13h 59m14h 25m14h 11m13h 23m12h 20m11h 15m10h 19m9h 51m
Data source: Atlantic Beach daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Atlantic Beach

As summer fades into autumn, September in Atlantic Beach presents a gentle transition, with average wind speeds settling at 4.3 m/s (10 mph). This slight dip from the more robust winds of earlier months, particularly August's calming 3.7 m/s (8 mph), reflects a gradual return to more consistent breezes. Throughout the year, there's a noticeable oscillation in wind intensity, peaking in late winter and early spring, only to soften as the heat of summer approaches. September's winds signal the onset of fall, hinting at the refreshing gusts to come in the subsequent months, which average around 5.0 m/s (11 mph) in December, rejuvenating the coastal atmosphere once again.

Average September Wind Speed in Atlantic Beach

The chart displays monthly wind speed patterns in Atlantic 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.65.55.54.85.24.84.63.74.3 m/s4.65.15.0
Data source: Atlantic Beach September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Atlantic Beach Compares to Other Months

The weather in Atlantic 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 Atlantic Beach and find detailed weather information for every month.

September and January present stark contrasts in weather patterns. In September, temperatures range from a mild 15°C (59°F) at night to a warm average of 25°C (77°F), peaking at 32°C (90°F) during the day. This month also sees significant precipitation, with 214 mm (8.4 in) over 13 rainy days, accompanied by high humidity levels averaging 80%. In contrast, January experiences much cooler temperatures, with nighttime lows plummeting to -8°C (18°F) and daytime averages hovering around 10°C (50°F). Max temperatures reach 22°C (71°F). Precipitation in January is considerably lower at 82 mm (3.2 in) over just 9 days, and humidity remains slightly higher at 84%. For more insights on winter conditions, check out Atlantic Beach weather in January.

September and February offer strikingly different weather experiences. In September, temperatures range from a mild 15°C (59°F) at night to a warm 32°C (90°F) during the day, with an average temperature of 25°C (77°F). Rainfall is considerably higher in September, with 214 mm (8.4 in) of precipitation over 13 days, paired with a humidity level of 80%. In contrast, February sees cooler temperatures, with lows dipping to -1°C (30°F) and highs reaching up to 22°C (71°F), averaging around 12°C (53°F). February has less precipitation, totaling 136 mm (5.4 in) across 11 days, and a similar humidity level of 81%. For a closer look at the specific conditions during February, visit Atlantic Beach weather in February.

In comparing the weather between September and March, notable differences emerge. September typically boasts warmer temperatures, with a minimum of 15°C (59°F) and an average high reaching 32°C (90°F), while March experiences chillier conditions, ranging from a low of -1°C (31°F) to a maximum of 23°C (73°F). Additionally, September is characterized by significantly higher precipitation, totaling 214 mm (8.4 in) over approximately 13 days, whereas March sees only 83 mm (3.3 in) across about 10 days. Interestingly, both months share a humidity level of 80%, creating a consistently moist atmosphere regardless of the season. For a deeper look at specific conditions, check out Atlantic Beach weather in March.

When comparing the weather in September and April, a marked difference emerges. September boasts warmer temperatures, with a minimum of 15°C (59°F) and an average of 25°C (77°F), reaching a maximum of 32°C (90°F). In contrast, April's temperatures are milder, ranging from a minimum of 4°C (40°F) to an average of 17°C (63°F), peaking at 26°C (78°F). Precipitation also varies significantly; September experiences 214 mm (8.4 in) over 13 days, while April has a lighter rainfall of 107 mm (4.2 in) over just 9 days. Notably, both months share the same humidity level of 80%. For detailed weather information, check out Atlantic Beach weather in April.

When comparing the weather in September and May, we can observe notable differences in temperature, precipitation, and humidity. September generally experiences warmer temperatures, with a minimum of 15°C (59°F) and an average of 25°C (77°F), contrasting with May's lower minimum of 10°C (51°F) and an average of 22°C (71°F). Both months can reach a similar maximum of 32°C (90°F), but September is wetter, receiving 214 mm (8.4 in) of precipitation over 13 days, compared to May's 114 mm (4.5 in) over 10 days. Humidity levels are quite similar, hovering around 80% in September and slightly higher at 81% in May. For a more detailed look at May’s weather specifics, you can check Atlantic Beach weather in May.

In comparing the weather of September and June, both months exhibit similar temperature ranges, with September showcasing a minimum of 15°C (59°F), an average of 25°C (77°F), and a maximum of 32°C (90°F). June has a slightly lower maximum temperature of 31°C (89°F), yet both months maintain the same minimum and average temperatures. However, September experiences significantly higher precipitation levels at 214 mm (8.4 in) over 13 days, compared to June's 157 mm (6.2 in) across 17 days. Additionally, humidity levels are relatively close, with September at 80% and June slightly higher at 82%. For more details on June weather, you can refer to Atlantic Beach weather in June.

In comparing the weather of September and July, we see a notable shift in temperatures and precipitation patterns. July typically boasts warmer temperatures, with a minimum of 20°C (69°F) and an average of 27°C (81°F), while September starts cooler, with a minimum of 15°C (59°F) and an average of 25°C (77°F). Both months experience a maximum temperature of 32°C (89°F in July and 90°F in September), but July has lower precipitation at 154 mm (6.0 in) over 16 days, compared to September’s 214 mm (8.4 in) over 13 days. Humidity levels are slightly higher in July at 83%, compared to 80% in September. For more detailed insights on July weather, you can visit Atlantic Beach weather in July.

In comparing the weather of September and August, September offers slightly cooler temperatures, with a minimum of 15°C (59°F) and an average of 25°C (77°F), compared to August's warmer minimum of 20°C (69°F) and an average of 27°C (80°F). Both months share the same maximum temperature of 32°C (90°F), but September experiences more rainfall, with 214 mm (8.4 in) over 13 days, compared to 191 mm (7.5 in) over 19 days in August. Humidity levels are also slightly lower in September at 80%, compared to August's 82%. For more detailed information, you can check Atlantic Beach weather in August.

September typically features warmer temperatures, with daily highs averaging around 25°C (77°F) and peaking at 32°C (90°F). The month also sees significant rainfall, with 214 mm (8.4 in) over 13 days, making humidity quite high at 80%. In contrast, October brings a noticeable drop in temperatures, with average daily highs of 21°C (70°F) and minimums of 8°C (47°F). Precipitation also decreases significantly to 82 mm (3.2 in) over just 10 days, maintaining a similar humidity level of 79%. For a closer look at the weather patterns in October specifically, you can visit Atlantic Beach weather in October.

In September, the weather is notably warmer with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 32°C (90°F) and an average of 25°C (77°F). It is also a month characterized by higher precipitation, averaging 214 mm (8.4 in) over 13 days, and a humidity level around 80%. In contrast, November experiences much cooler temperatures, with a minimum of 1°C (35°F), an average of 15°C (59°F), and a maximum of 26°C (79°F). The precipitation decreases significantly to 108 mm (4.3 in) over just 9 days, and humidity slightly rises to 83%. For more details, you can check Atlantic Beach weather in November.

In September, the weather is warm and humid, with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 32°C (90°F) and an average temperature of 25°C (77°F). The month also sees considerable precipitation, totaling 214 mm (8.4 inches) over approximately 13 rainy days. In contrast, December presents a cooler climate, with temperatures dropping to a minimum of -1°C (31°F) and an average of 12°C (54°F), peaking at 22°C (72°F). Precipitation in December is lower at 148 mm (5.8 inches) but occurs over just 10 days, and humidity remains slightly higher at 84%. For more detailed information, you can check Atlantic Beach weather in December.

Compare Atlantic Beach's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Atlantic Beach

As summer transitions into fall, September brings a unique blend of warmth and humidity to Atlantic Beach, with temperatures generally milder than the peak summer months. While this time of year can still deliver balmy days, it is marked by increased rainfall, leading to a more tropical ambiance. With around thirteen days of precipitation, the vibrant atmosphere of the beach is occasionally punctuated by refreshing showers. Overall, September is a lovely month for those who appreciate a balance of sunny days and cooler evenings, making for an ideal getaway. For a deeper dive into what to expect throughout the year, check out the details on the Atlantic Beach Climate.