September Weather in Seaside Heights, United States

Last updated: February 24, 2025

September weather in Seaside Heights, United States brings a delightful mix of warmth and occasional rain. With maximum temperatures soaring to 30°C (86°F) and an average of 21°C (71°F), visitors can enjoy the summer's last hurrah. However, the month also sees minimum temperatures dipping to 11°C (53°F), reminding us that fall is approaching. Expect about 101 mm (4.0 in) of precipitation spread over 10 days, contributing to a humidity level of 74% that adds a touch of tropical feel to the coastal air. It's a perfect time to relish the beach while being prepared for a refreshing drizzle!

September Temperature in Seaside Heights

In September, Seaside Heights experiences a delightful transition as summer begins to fade, showcasing its mild temperatures. With a minimum of 11°C (53°F) and a pleasant average of 21°C (71°F), visitors can enjoy comfortable days perfect for beach outings and strolls along the boardwalk. The highs reach a warm 30°C (86°F), making it one of the last opportunities to soak up the sun before the cooler autumn air sets in. This month reflects a gradual cooling trend, yet ensures a lovely balance of warmth, highlighting why September remains a favored time for both locals and tourists to savor the coastal charm of this vibrant New Jersey destination.

September Weather in Seaside Heights: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Seaside Heights, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec373943516070777671625042
Data source: Temperature data for Seaside Heights 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 Seaside Heights

September in Seaside Heights marks a transition in the weather, with precipitation measuring 101 mm (4.0 in) over 10 days. This month's rainfall is noticeably less than the summer peak of August, which recorded 131 mm with 14 wet days. As the season shifts towards fall, September’s precipitation signifies a gradual decline, reflecting an overall trend of decreasing rainfall after the summer months. Yet, it remains significant enough to maintain the lush scenery of the area as locals and visitors alike enjoy the lingering warmth. October is expected to bring a surge in precipitation, with an average of 159 mm ahead, further illustrating the cyclical nature of weather patterns in this coastal region.

September Precipitation Trends in Seaside Heights

The chart displays monthly precipitation patterns in Seaside Heights, 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.
JanFebMarAprMayJunJulAugSepOctNovDec7812511011812685129131101159102127
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Seaside Heights

In Seaside Heights, September marks a transition into the cooler months, and the humidity reflects this change with a comfortable average of 74%. This slight dip in moisture levels follows a summer that experienced higher humidity, peaking in the mid-70s during July and August. With the approach of autumn, residents and visitors can enjoy the refreshing air without the sweltering stickiness of previous months. Overall, September's humidity not only signals the onset of the fall season but also highlights a broader trend of decreasing humidity from spring's average of 79% down to autumn's more pleasant conditions. As the year progresses, humidity levels fluctuate, yet September stands out as a month of relief and transition.

September Average Humidity in Seaside Heights

This chart illustrates the average monthly humidity levels in Seaside Heights, 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.
JanFebMarAprMayJunJulAugSepOctNovDec83%82%81%79%74%77%76%77%74%75%80%81%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Seaside Heights

As September rolls into Seaside Heights, the UV Index remains notably high at 8, indicating a very high exposure category. This marks a slight decrease from the peak summer months, when the UV Index reached its maximum at 10. Despite the transition to fall, residents and visitors should still exercise caution as the burn time is quick, clocking in at just 15 minutes. The trends observed throughout the year highlight a significant increase in UV Index levels from winter’s moderate values, emphasizing the importance of sun protection even as the days grow shorter. For more detailed information on UV exposure in Seaside Heights, visit Seaside Heights UV Index.

Maximum UV Index Levels in Seaside Heights for September

The chart shows the monthly maximum UV Index (UVI) for Seaside Heights 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.
JanFebMarAprMayJunJulAugSepOctNovDec356810101098643
Data source: Seaside Heights 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 Seaside Heights

As summer gently fades into fall, September in Seaside Heights embraces a charming blend of warmth and brightness, offering 281 hours of sunshine. This month, while less sun-soaked than the peak July and August, still boasts a generous amount of daylight, surpassing the earlier months like April and May. The gradual decline in sunshine hours reflects the seasonal shift, but the lingering warmth ensures that visitors can still enjoy the vibrant beach atmosphere. This trend underscores the region's unique appeal: a sunny haven that extends the joys of summer well into autumn.

Monthly Sunshine Duration in Seaside Heights: September Highlighted

The September sunshine duration represents the total number of hours Seaside Heights 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.
JanFebMarAprMayJunJulAugSepOctNovDec153h181h257h253h294h329h356h324h281h235h217h179h
Data source: Seaside Heights September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Seaside Heights During September

In Seaside Heights, September offers a 50% chance of sunny weather, aligning perfectly with the highs of early spring. Notably, this month marks a significant rebound from the summer months, particularly August, which experiences a lower sun probability at 32%. The overall trend suggests that as the year progresses, the likelihood of sun dips in the summer before experiencing a resurgence in September, making it a prime time for beachgoers. With an equal chance of sunshine and cloud cover, September serves as a delightful bridge between the vibrant summer and the crispness of autumn, inviting visitors to soak in the last warm rays of the season.

Percentage of Sunny Days in September in Seaside Heights

The chart illustrates the percentage of sunny days in Seaside Heights 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 Seaside Heights experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec50%29%56%46%46%37%47%32%50%42%55%33%
Data source: Seaside Heights September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Seaside Heights in September

As summer fades, September in Seaside Heights experiences a gradual decline in daylight, averaging 12 hours of sunlight each day. This decrease marks a transition from the peak of summer's long days, where July and August enjoyed a generous 14 hours of brightness. Following the vibrant warmth of summer, September's daylight serves as a gentle reminder of the approaching autumn, with sunlight gradually tapering off as the year progresses into October, which will drop to just 11 hours. This rhythm of daylight is a familiar pattern in the seasonal cycle, inviting residents and visitors to savor the softer light and cooler temperatures that characterize early fall.

Average Daylight Hours in Seaside Heights for September

The chart illustrates the variation in daylight duration in Seaside Heights throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 41m10h 41m11h 58m13h 17m14h 23m14h 56m14h 38m13h 39m12h 24m11h 5m9h 57m9h 22m
Data source: Seaside Heights daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Seaside Heights

As summer gives way to autumn, the September winds in Seaside Heights bring a gentle shift in atmosphere. With an average wind speed of 4.6 m/s (10 mph), September marks a slight increase from the languid breezes of July and August, which often linger around 3.7–3.8 m/s. This refreshing transition heralds the return of more comfortable outdoor conditions, inviting beachgoers to relish the vibrant shoreline before the cooler months set in. As temperatures cool and the winds pick up just a bit, September serves as a delightful reminder that nature is in a constant state of flux, preparing for the brisk autumn days ahead.

Average September Wind Speed in Seaside Heights

The chart displays monthly wind speed patterns in Seaside Heights, 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.
JanFebMarAprMayJunJulAugSepOctNovDec5.65.95.54.84.64.33.83.74.6 m/s5.15.44.8
Data source: Seaside Heights September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Seaside Heights Compares to Other Months

The weather in Seaside Heights 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 Seaside Heights and find detailed weather information for every month.

In September, the weather is markedly warmer, with average temperatures around 21°C (71°F) and maximums reaching 30°C (86°F), while the month experiences significant humidity at 74% and noticeable rainfall of 101 mm over about 10 days. In contrast, January brings starkly colder conditions, with average temperatures plummeting to around 3°C (38°F) and minimums dipping as low as -14°C (7°F). The winter month also has a lower precipitation total of 77 mm over 9 days but sees a higher humidity level of 83%. For more detailed information, you can check the Seaside Heights weather in January.

The weather in September showcases a more temperate climate, with average temperatures ranging from a mild 11°C (53°F) at night to a warm 30°C (86°F) during the day, accompanied by relatively high humidity at 74%. Although it experiences about 101 mm (4.0 in) of precipitation spread over 10 days, the overall feel is much more inviting. In stark contrast, February plunges into much colder conditions, with average temperatures hovering between -14°C (8°F) and a maximum of 19°C (66°F). This month also sees a higher level of humidity at 82% and more precipitation, totaling 124 mm (4.9 in) over 11 days. For a more in-depth look at what to expect, check out Seaside Heights weather in February.

September and March present contrasting weather patterns. In September, temperatures range from a mild 11°C (53°F) to a warm 30°C (86°F), with an average of 21°C (71°F), making it a pleasant month for outdoor activities. However, it also experiences significant humidity at 74% and rainfall of 101 mm (4.0 in) over about 10 days. In contrast, March typically brings much cooler temperatures, with a minimum of -7°C (19°F) and a maximum of 22°C (73°F), averaging only 6°C (43°F). It has slightly higher precipitation at 110 mm (4.3 in) over the same number of days and even higher humidity at 81%. For those interested in the specifics, you can find more details about the weather in Seaside Heights by exploring Seaside Heights weather in March.

In comparing the weather of September and April, we notice notable differences in temperature and precipitation. September typically enjoys warmer temperatures, ranging from a minimum of 11°C (53°F) to a maximum of 30°C (86°F), with an average of 21°C (71°F). In contrast, April experiences cooler temperatures, with a minimum of 0°C (32°F), an average of 11°C (51°F), and a maximum of 26°C (78°F). While September has slightly lower precipitation at 101 mm (4.0 in) over 10 days, April sees a bit more rain at 118 mm (4.6 in) over 11 days, alongside higher humidity levels at 79% compared to September's 74%. For more detailed insights, check out Seaside Heights weather in April.

In comparing the weather of September and May, we notice distinct differences in temperature and precipitation patterns. September boasts a warmer average temperature of 21°C (71°F), with maximum highs reaching up to 30°C (86°F), while May has a cooler average of 15°C (60°F) and max temperatures peaking at 29°C (84°F). Both months experience high humidity levels at 74%, but September typically receives less rainfall, with 101 mm (4.0 in) over about 10 days, compared to May's 126 mm (4.9 in) spread over 12 days. For a detailed look at May weather, you can visit Seaside Heights weather in May.

When comparing the weather in September and June, we see some notable similarities and differences. Both months have a minimum temperature of around 11°C (52-11°F) and an average temperature of approximately 21°C (70-71°F). However, June tends to be slightly warmer with a maximum of 31°C (87°F) compared to September's 30°C (86°F). Interestingly, September experiences a higher level of precipitation, totaling 101 mm over 10 days, while June has 84 mm spread over 11 days. Humidity levels are also comparable, with September at 74% and June slightly higher at 77%. For a detailed look at June weather conditions, you can visit Seaside Heights weather in June.

September and July offer contrasting weather experiences. In July, temperatures are warmer, with a minimum of 17°C (64°F) and highs reaching up to 34°C (93°F), while September sees cooler temperatures, ranging from a minimum of 11°C (53°F) to a maximum of 30°C (86°F). July typically has higher humidity at 76% compared to September's 74%, creating a more oppressive heat during the peak of summer. Precipitation is also more frequent in July, with an average of 129 mm (5.1 in) over 13 days, whereas September experiences a bit less rain at 101 mm (4.0 in) over 10 days. For a closer look at July weather in this coastal area, check out Seaside Heights weather in July.

In comparing the weather of September to August, we see a notable shift in temperatures and precipitation patterns. September features a cooler climate with a minimum temperature of 11°C (53°F) and an average of 21°C (71°F), while August remains warmer, starting at a minimum of 18°C (64°F) and averaging 24°C (76°F). Despite slightly lower temperatures, September experiences about 101 mm (4.0 in) of rainfall over 10 days, compared to August's higher precipitation of 131 mm (5.2 in) over 14 days. Humidity levels also drop slightly in September to 74% from August’s 77%, providing a more comfortable feel as summer transitions into fall. For more detailed information, you can check Seaside Heights weather in August.

September typically offers milder weather with temperatures ranging from a minimum of 11°C (53°F) to a maximum of 30°C (86°F) and an average of 21°C (71°F). In contrast, October sees a drop in minimum temperatures to 5°C (42°F) but can still reach a high of 31°C (88°F), averaging around 17°C (63°F). While September receives less precipitation at 101 mm (4.0 in) over about 10 days, October experiences a marked increase in rainfall, totaling 159 mm (6.2 in) across 12 days. Humidity remains relatively consistent, slightly rising from 74% in September to 75% in October, adding to the atmosphere of the season. For more details, you can check Seaside Heights weather in October.

September and November exhibit notable contrasts in weather. September enjoys a milder atmosphere with temperatures ranging from a minimum of 11°C (53°F) to a maximum of 30°C (86°F), averaging around 21°C (71°F). The month sees a moderate amount of rainfall, with approximately 101 mm (4.0 in) over about 10 days, and humidity sits at 74%. In contrast, November ushers in much cooler temperatures, with a minimum of -6°C (22°F) and a maximum of 22°C (72°F), averaging only 10°C (50°F). Despite a similar level of precipitation at 102 mm (4.0 in) over 9 days, November’s humidity increases slightly to 80%. For those interested in more details, check out Seaside Heights weather in November.

September weather is characterized by milder temperatures, with minimums around 11°C (53°F), averaging 21°C (71°F), and reaching maximums of 30°C (86°F). This month sees a total precipitation of 101 mm (4.0 in) over approximately 10 days and maintains a comfortable humidity level of 74%. In contrast, December brings a significant drop in temperatures, with minimums plunging to -9°C (16°F), averaging only 6°C (42°F), and maximums reaching 18°C (64°F). The month receives a bit more precipitation at 127 mm (5.0 in), while experiencing slightly higher humidity at 81%. For a detailed look at what to expect, check out Seaside Heights weather in December.

Compare Seaside Heights's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Seaside Heights

As summer gracefully transitions into autumn, September in Seaside Heights brings a delightful blend of warmth and refreshing coastal breezes. While the midday heat can still reach a pleasant high of around 30°C, the average temperature cools to a comfortable 21°C, creating an inviting atmosphere for both locals and visitors alike. However, with about 10 days of rain and a humidity level of 74%, September does have its rainy moments, reminding us of the shifting seasons. This transitional month stands out with its mix of sun-soaked days and cooler evenings, making it distinct from the more consistently warm summer months. For a deeper dive into the year's weather patterns, explore Seaside Heights Climate.