Last updated: February 24, 2025
Experience the dynamic September weather in Rockport, United States, where temperatures peak at a warm 32°C (90°F), averaging a comfortable 28°C (82°F), and dipping to a pleasant 18°C (65°F) at night. This month brings a substantial 176 mm (6.9 in) of rain, spread over 17 rainy days, contributing to a high humidity level of 79%. As summer transitions into fall, residents and visitors alike can expect a mix of sun-soaked days and refreshing showers, making for a vibrant and ever-changing coastal climate.
In September, Rockport experiences a delightful transition as summer starts to fade, with temperatures gently declining yet remaining pleasantly warm. The month opens with minimums averaging around 18°C (65°F), while daytime highs flirt with 32°C (90°F), marking a comfortable average of 28°C (82°F). This creates an inviting atmosphere for outdoor activities, as the lingering warmth of summer combines with the crispness of early autumn. As the month progresses, the heat gradually softens, foreshadowing the cooler months ahead while still allowing for plenty of beautiful days to enjoy before the chill sets in.
In September, Rockport experiences a notable surge in precipitation, with an impressive 176 mm (6.9 in) of rain spread across 17 days. This marks a significant increase compared to the preceding months, with September often emerging as the wettest month of the year. The trend showcases a transition from the relatively mild summer rainfalls of August, which saw 89 mm (3.5 in) over 12 days, to a period of more frequent and intense storms. This uptick in rainy days suggests the onset of autumn, as cooler air masses dominate, leading to more showery weather patterns and contributing to the lush landscapes that characterize Rockport during this vibrant season.
In September, Rockport experiences a refreshing humidity level of 79%, slightly lower than the sultry heights of the summer months but consistent with the year's trend of mild atmospheric moisture. The humidity remains fairly stable throughout the year, with only minor fluctuations; it peaks in February at 82% and dips to 77% in June and October. This seasonal moderation provides a pleasant transition into autumn, contributing to the region's charming climate. As the year progresses, humidity levels exhibit a gentle ebb and flow, creating a comfortable environment that residents and visitors alike can appreciate as summer gives way to fall.
As summer begins to wane in September, Rockport experiences a notably high UV Index of 11, classified as extreme. This indicates a continuing trend of heightened UV exposure seen in the preceding months, reflecting a pattern that peaks in the summer before gradually tapering off into the fall. With a burn time of just 10 minutes, residents and visitors alike are reminded to take precautionary measures against the sun's powerful rays, which have consistently remained in the extreme category throughout the summer months of June, July, and August. While October offers a slight reprieve with a UV Index of 9, the importance of sun safety during this transition period cannot be overstated. For detailed information on daily UV levels, check out Rockport UV Index.
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As summer gently transitions into fall, September in Rockport welcomes a pleasing 288 sunshine hours, a delightful blend of warmth and emerging autumn colors. Following the peak of June and July, which both boast an impressive 332 hours, September maintains a notable level of sunlight, marking a gradual decline yet still outshining the earlier months like January and February. This trend highlights a consistent pattern of increasing daylight as spring unfolds into summer, peaking in the heart of summer before easing into the softer light of autumn. With October's sunshine slightly tapering to 287 hours, those crisp, sunlit days in September become a perfect opportunity to savor the last whispers of summer.
In September, Rockport enjoys a notable uptick in sunshine, with the likelihood of sunny days soaring to 59%—a refreshing contrast to the summer months that often see lower percentages. This trend indicates that as the season changes, residents and visitors alike can look forward to more bright skies and frequent outdoor opportunities. Following September, the chance of sun slightly tapers in October to 57%, yet remains above average compared to the more unpredictable months earlier in the year, such as July and August. This shift signals an inviting time to experience Rockport's coastal charm, making early autumn an ideal getaway for those seeking pleasant weather and stunning views.
As September unfolds in Rockport, the days gradually begin to shorten after the peak of summer. With approximately 12 hours of daylight, this month marks a subtle transition, reminiscent of the longer days from June through August, which enjoy a consistent 13 hours. The onset of fall signals a gentle retreat from the sun's embrace, as daylight slowly tapers off, preparing the landscape for the cozy charms of autumn. Following September, the days decline further, with October bringing 11 hours and November settling into a more wintry rhythm at 10 hours. This progression highlights a natural ebb and flow in daylight, inviting residents to savor every sunlit moment before the darker months ahead.
As September unfolds in Rockport, the breezy days bring a sense of calm before the autumn chill sets in. With an average wind speed of 4.6 m/s (10 mph), this month mirrors the gentle winds of August, suggesting a transitionary period where the summer's warmth lingers slightly longer. Following a gradual decline from the spring months, where gusts peaked around 6.3 m/s (14 mph) in May, September's breezes offer a peaceful reprieve. As the year progresses, the winds will begin to pick up again in October, hinting at the upcoming seasonal shifts that characterize this coastal town. Embrace the soft whispers of September winds, inviting you to savor the last remnants of summer's embrace.
The weather in Rockport 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 Rockport and find detailed weather information for every month.
September and January present starkly contrasting weather conditions. In September, temperatures range from a comfortable 18°C (65°F) to a warm average of 28°C (82°F), with highs reaching up to 32°C (90°F). However, this month is characterized by considerable rainfall, totaling 176 mm (6.9 in) over 17 rainy days, along with high humidity at 79%. In contrast, January experiences much cooler temperatures, with a minimum of -2°C (29°F) and an average of 15°C (59°F); the highs are more temperate, averaging 26°C (79°F). Precipitation is significantly lower in January, with only 49 mm (1.9 in) over 6 days, and humidity remains similar at 78%. For a detailed look at the specifics of January weather, check out Rockport weather in January.
The weather in September is typically much warmer and more humid compared to February. In September, temperatures range from a minimum of 18°C (65°F) to a maximum of 32°C (90°F), with an average of 28°C (82°F). This month also sees significant rainfall, with 176 mm (6.9 in) of precipitation over about 17 days, resulting in a humidity level of 79%. In contrast, February experiences much cooler temperatures, with a minimum of -6°C (22°F) and a maximum of 26°C (79°F). The average temperature is around 16°C (60°F), and with only 46 mm (1.8 in) of precipitation over 9 days, the humidity remains fairly high at 82%. For a more detailed look at the February weather, visit Rockport weather in February.
September and March present distinct weather patterns, making each month uniquely appealing. In September, temperatures range from a minimum of 18°C (65°F) to a maximum of 32°C (90°F), with an average temperature of 28°C (82°F). This month experiences significant rainfall, totaling 176 mm (6.9 in) over 17 days, while humidity remains steady at 79%. Conversely, March offers a much cooler climate, with temperatures ranging from a chilly 2°C (36°F) to a more moderate maximum of 28°C (83°F), averaging at 19°C (67°F). Rainfall is considerably lower at 55 mm (2.2 in) spread across just 8 days, maintaining the same humidity level of 79%. The overall contrast highlights September's warmer, wetter atmosphere compared to March's cooler, drier conditions. For more details, check out Rockport weather in March.
When comparing the weather in September and April, September tends to be warmer overall, with average temperatures around 28°C (82°F) compared to April's milder average of 22°C (72°F). Both months can reach a high of 32°C (90°F), but September sees significantly more precipitation, with 176 mm (6.9 in) over 17 days, while April only experiences about 52 mm (2.1 in) across 7 days. Additionally, the humidity in both months is relatively high, reaching 79% in September and 82% in April. For more detailed information on April weather, you can check out Rockport weather in April.
In comparing the weather of September and May, we find that September tends to be slightly warmer, featuring an average temperature of 28°C (82°F) compared to May’s 26°C (78°F). Both months experience high humidity, with September at 79% and May slightly higher at 81%. However, September sees more precipitation, with 176 mm (6.9 in) over 17 days, while May has 145 mm (5.7 in) distributed across 12 days. For a detailed look at May weather, you can visit Rockport weather in May.
When comparing the weather in September and June, several key differences emerge. June typically boasts a higher minimum temperature of 23°C (73°F), compared to September's cooler minimum of 18°C (65°F). Both months share the same average temperature of 28°C (82°F), yet June can reach higher maximum temperatures, peaking at 34°C (94°F) versus September's maximum of 32°C (90°F).
In terms of precipitation, September experiences more rainfall, totaling 176 mm (6.9 in) over 17 days, while June sees less, with 148 mm (5.8 in) across just 13 days. Humidity is quite similar in both months, with September at 79% and June slightly lower at 77%. For a more detailed look at June weather, you can check out Rockport weather in June.
When comparing the weather in September and July, we see some notable differences. September typically experiences a minimum temperature of 18°C (65°F), while July starts warmer with a minimum of 24°C (76°F). Both months have similar average temperatures around 28°C (82°F to 83°F), but July can peak higher, reaching a maximum of 34°C (93°F) compared to September's 32°C (90°F). Additionally, September tends to be wetter, with 176 mm (6.9 in) of precipitation over 17 days, compared to July’s 118 mm (4.7 in) spread across just 9 days. The humidity in September is slightly higher at 79%, while July maintains a comfortable level at 78%. For a more detailed look at July's climate, you can check Rockport weather in July.
In comparing the weather between September and August, September experiences slightly cooler temperatures, with minimums of 18°C (65°F) compared to August's 23°C (74°F). The average temperature in September is 28°C (82°F), just below August's average of 29°C (84°F), while the maximum in September is 32°C (90°F), slightly lower than August's high of 33°C (91°F). However, September sees significantly more precipitation, receiving 176 mm (6.9 in) over 17 days compared to August's 89 mm (3.5 in) over just 12 days. Humidity levels remain relatively similar, with September at 79% and August at 78%. For a detailed look at August's weather patterns, check out Rockport weather in August.
September weather is characterized by warmer temperatures with a minimum of 18°C (65°F) and an average of 28°C (82°F), reaching up to a hot 32°C (90°F). However, the month is quite wet, with 176 mm (6.9 in) of precipitation over 17 days, coupled with high humidity at 79%. In contrast, October experiences a more noticeable drop in temperature, with a minimum of 10°C (50°F) and an average of 24°C (76°F), peaking at 31°C (88°F). The precipitation also decreases significantly to 96 mm (3.8 in) over just 12 days and the humidity drops slightly to 77%. For more details, you can check the Rockport weather in October.
In September, the weather is notably warmer, with average temperatures ranging from a minimum of 18°C (65°F) to a maximum of 32°C (90°F), while November experiences cooler temperatures, with a minimum of 3°C (38°F) and a maximum of 27°C (82°F). September sees a significant amount of rainfall, with 176 mm (6.9 in) spread across 17 days, whereas November is much drier, with only 59 mm (2.3 in) of precipitation over 8 days. Humidity remains relatively stable between the two months, at 79% in September and slightly lower at 78% in November. For more detailed insights, you can explore Rockport weather in November.
September and December weather present a stark contrast in terms of temperature and precipitation. In September, temperatures are warm, with a minimum of 18°C (65°F) and an average of 28°C (82°F), peaking at a maximum of 32°C (90°F). This month also sees a significant amount of rainfall, with 176 mm (6.9 in) over 17 days, coupled with a humidity level of 79%. In contrast, December experiences much cooler temperatures, with a minimum of 3°C (37°F) and an average of 17°C (62°F), reaching a maximum of 25°C (77°F). Precipitation is notably less, totaling 55 mm (2.1 in) across just 6 days, while humidity remains relatively high at 80%. For more detailed information, visit Rockport weather in December.
As September arrives in Rockport, the weather transitions into a warm yet humid phase, offering a blend of sun and rain that sets it apart from the sweltering summer months. With an average temperature of 28°C (82°F), days feel comfortably warm, contrasted by cooler evenings, while the humidity often lingers around 79%. Frequent rainfall, occurring approximately 17 days of the month, contributes to a significant 176 mm of precipitation, which is notably higher than in the preceding months. This increased moisture not only revives the landscape but also introduces a refreshing change, making it an intriguing time for both locals and visitors. For a deeper insight into what the Rockport climate has to offer throughout the year, check out Rockport Climate.