September Weather in Corpus Christi, United States

Last updated: February 24, 2025

In September, Corpus Christi experiences a warm coastal climate, with maximum temperatures reaching up to 35°C (96°F) and an average of 28°C (82°F). The minimum temperature dips to around 16°C (61°F), providing a pleasant reprieve from the midday heat. This month also sees a fair amount of precipitation, totaling 122 mm (4.8 in) across approximately 15 days, contributing to the region's relatively high humidity level of 73%. Visitors can expect a mix of sunny and rainy days, making it essential to embrace both sun protection and waterproof gear when exploring the vibrant surroundings.

September Temperature in Corpus Christi

As September rolls into Corpus Christi, the heat of summer gradually begins to ebb, ushering in a more temperate atmosphere. With minimum temperatures hovering around 16°C (61°F) and reaching an average of 28°C (82°F), the month retains a warmth that is both inviting and comfortable. The maximum temperatures, peaking at 35°C (96°F), indicate that while cooler days are on the horizon, summer's grip lingers a little longer. Compared to the sweltering heights of July and August, September provides a gentle transition, striking a balance that makes exploring the coastal city particularly enjoyable as fall approaches.

September Weather in Corpus Christi: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Corpus Christi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec596168737983848582756661
Data source: Temperature data for Corpus Christi 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 Corpus Christi

September in Corpus Christi marks a pivotal shift in the precipitation pattern, with rainfall measuring 122 mm (4.8 in) over 15 days—the highest monthly total since May. This spike can be attributed to the transition into fall, where tropical storms become more prevalent, intensifying rainfall. Following the comparative dryness of the summer months, September's precipitation serves as a reminder of the region's climatic shifts, bringing lushness back to the landscape. With 12 to 13 rainy days in both May and June, this month's extended wet period underscores September's role as a bridge between the arid heat of summer and the approaching cooler months, setting the stage for the subsequent drop to 72 mm (2.8 in) in October.

September Precipitation Trends in Corpus Christi

The chart displays monthly precipitation patterns in Corpus Christi, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3727604913112911070122724946
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Corpus Christi

In September, Corpus Christi experiences a humidity level of 73%, which reflects a slight uptick from the lower summer months of July and August, where humidity dipped to 66% and 65%, respectively. This trend highlights a transition as the summer heat begins to wane, leading to a gradual return of moisture in the air. While September's humidity isn’t as high as the spring months, such as January's 83% and November's 80%, it indicates the lingering warmth of summer while hinting at the approach of fall. Consequently, visitors and residents alike can expect a comfortable, yet humid atmosphere as the month unfolds.

September Average Humidity in Corpus Christi

This chart illustrates the average monthly humidity levels in Corpus Christi, 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%79%76%77%80%73%66%65%73%76%80%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Corpus Christi

As summer transitions into fall, September in Corpus Christi maintains a notably high UV Index of 11, categorizing it as extreme and allowing for a quick burn time of just 10 minutes. This trend reflects the lingering intensity of summer sun exposure that peaks in the previous months, particularly with July and August at a UV Index of 12. While there’s a slight decrease from the peak summer values, the UV levels remain dangerously high, urging residents and visitors to remain vigilant with sun protection. Looking ahead, as autumn unfolds, the UV Index will gradually descend, yet it’s crucial to stay informed on daily levels. For detailed insights, check the Corpus Christi UV Index.

Maximum UV Index Levels in Corpus Christi for September

The chart shows the monthly maximum UV Index (UVI) for Corpus Christi 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.
JanFebMarAprMayJunJulAugSepOctNovDec6810111112121211975
Data source: Corpus Christi 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 Corpus Christi

As summer wanes, September in Corpus Christi continues to bask in ample sunshine, boasting 288 hours of radiant light. This marks a gentle decline from the sun-drenched heights of July and August, which each offered around 331 hours. Yet, September's luminosity still reflects the city's extended sunny season, as it surpasses the earlier months of the year, from January's modest 177 hours to May's increasing bask of 318 hours. The trend indicates a gradual transition into fall, where sunlight dances on the horizon, captivating residents and visitors alike, while the warmth of summer lingers just a little longer. With this comforting blend of sunshine as autumn approaches, Corpus Christi remains a vibrant destination for those eager to soak up the last rays of summer.

Monthly Sunshine Duration in Corpus Christi: September Highlighted

The September sunshine duration represents the total number of hours Corpus Christi 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.
JanFebMarAprMayJunJulAugSepOctNovDec177h191h253h279h318h331h335h331h288h286h247h238h
Data source: Corpus Christi September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Corpus Christi During September

In September, Corpus Christi basks in a notably higher chance of sunny weather, with 62% likelihood—making it one of the sunniest months of the year. This marks a significant upswing from the summer months of July and August, where sunny days dropped to 31% and 41%, respectively. As the searing heat of summer begins to wane, September emerges as a transitional period, paving the way for more pleasant weather. With autumn just around the corner, residents and visitors alike can enjoy this vibrant coastal city under a more generous sun, hinting at a beautiful start to the fall season.

Percentage of Sunny Days in September in Corpus Christi

The chart illustrates the percentage of sunny days in Corpus Christi 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 Corpus Christi experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec52%41%43%37%39%45%31%41%62%57%55%42%
Data source: Corpus Christi September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Corpus Christi in September

As September rolls into Corpus Christi, the days begin to subtly shorten, with daylight lasting 12 hours. This marks a slight decline from the sun-soaked 13-hour stretch experienced during the summer months, reflecting the gradual transition into fall. The trend showcases a seasonal ebb and flow; starting from 10 hours in January, daylight steadily increases to its peak in the summer before starting its gentle descent. The fluctuation in daylight hours encapsulates the rich tapestry of seasons, where September serves as a bridge, balancing the lingering warmth of summer with the cooler whispers of autumn that lie ahead.

Average Daylight Hours in Corpus Christi for September

The chart illustrates the variation in daylight duration in Corpus Christi throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 35m11h 12m12h12h 50m13h 31m13h 51m13h 40m13h 4m12h 16m11h 27m10h 45m10h 23m
Data source: Corpus Christi daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Corpus Christi

As September rolls into Corpus Christi, the coastal breeze begins to soften, with an average wind speed of 3.4 m/s (8 mph). This marks a noticeable dip compared to the spring months, where winds peaked around 4.9 m/s (11 mph) in April. The summer months follow a downward trend, and September continues this pattern, aligning closely with the languid pace of August and July. Interestingly, despite the reduced wind speeds, the charm of the warm coastal air persists, inviting both locals and visitors to bask in the gentle embrace of the Gulf breeze. As the year progresses toward October, winds remain consistent, hinting at a calm transition into the fall season.

Average September Wind Speed in Corpus Christi

The chart displays monthly wind speed patterns in Corpus Christi, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.04.64.74.94.84.03.43.53.4 m/s3.63.64.3
Data source: Corpus Christi September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Corpus Christi Compares to Other Months

The weather in Corpus Christi 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 Corpus Christi and find detailed weather information for every month.

September and January present contrasting weather conditions. In September, temperatures range from a minimum of 16°C (61°F) to a warm average of 28°C (82°F), peaking at a scorching 35°C (96°F). This month also experiences significant rainfall, with 122 mm (4.8 in) of precipitation over an average of 15 days, coupled with a humidity level of 73%. In stark contrast, January's temperatures drop considerably, with a minimum of -4°C (26°F) and an average of 15°C (59°F), reaching a maximum of 32°C (91°F) on warmer days. Precipitation in January is significantly lower, with only 37 mm (1.4 in) over about 6 days, alongside a higher humidity of 83%. For a more detailed look at January's weather, you can visit Corpus Christi weather in January.

September and February exhibit stark contrasts in weather patterns. September typically experiences warmer temperatures, with averages around 28°C (82°F) and highs reaching up to 35°C (96°F), coupled with significant rainfall of 122 mm (4.8 in) over 15 days. In contrast, February presents a much cooler climate, characterized by a chilling minimum temperature of -7°C (20°F) and an average of 16°C (61°F). Precipitation is notably lower in February, with just 27 mm (1.0 in) across 7 days. While September boasts higher humidity levels at 73%, February's humidity is slightly higher at 79%, indicating a dampness in the colder air. For more detailed information, you can refer to Corpus Christi weather in February.

September and March showcase distinct weather characteristics. In September, temperatures range from a minimum of 16°C (61°F) to a maximum of 35°C (96°F), with an average of 28°C (82°F). The month experiences higher precipitation, with 122 mm (4.8 in) of rain falling over 15 days and a humidity level of 73%. In contrast, March features a cooler climate, with temperatures ranging from a chilly 1°C (35°F) to a warm 33°C (92°F) and an average of 20°C (69°F). It sees significantly less rainfall, totaling 60 mm (2.4 in) over 8 days, and slightly higher humidity at 76%. For more detailed insights, check out Corpus Christi weather in March.

When comparing the weather in September and April, notable differences arise in temperature and precipitation. September boasts a warmer average temperature of 28°C (82°F) with maxima reaching up to 35°C (96°F), while April’s average hovers around 23°C (74°F) with extremes up to 36°C (98°F). In terms of precipitation, September is considerably wetter, receiving 122 mm (4.8 in) over 15 days, compared to April's 49 mm (1.9 in) spread over just 8 days. Additionally, while humidity is slightly higher in April at 77%, September's humidity stands at 73%. For a more detailed look at April weather, you can visit Corpus Christi weather in April.

Comparing the weather in September and May reveals some interesting differences. In September, the temperatures range from a minimum of 16°C (61°F) to a maximum of 35°C (96°F), with an average of 28°C (82°F). This month experiences 122 mm (4.8 in) of precipitation over approximately 15 days, and the humidity sits at 73%. In contrast, May is slightly cooler, with temperatures ranging from a minimum of 13°C (55°F) to a maximum of 35°C (95°F) and an average of 26°C (80°F). It sees a bit more rain, with 131 mm (5.2 in) falling over 12 days and a higher humidity level of 80%. For more details on the weather in May, check out Corpus Christi weather in May.

When comparing the weather in September and June, both months display warm average temperatures, typically hovering around 28°C (82°F) to 29°C (84°F). However, June tends to be slightly hotter, with maximum temperatures reaching up to 38°C (100°F), compared to September's peak of 35°C (96°F). In terms of precipitation, both months experience considerable rainfall, with September receiving 122 mm (4.8 in) over 15 days and June slightly higher at 129 mm (5.1 in) across 13 days. Interestingly, humidity levels remain consistent at 73% in both months, making for a humid environment in either case. For a detailed look at June weather, you can visit Corpus Christi weather in June.

When comparing the weather in September and July, it's evident that September tends to be slightly cooler, with average temperatures ranging from a minimum of 16°C (61°F) to a maximum of 35°C (96°F), while July features higher temperatures, with a minimum of 22°C (72°F) and a maximum of 38°C (100°F). Additionally, September experiences more rainfall, with 122 mm (4.8 in) of precipitation over 15 days, compared to July's 110 mm (4.3 in) over just 10 days. Humidity is also higher in September at 73%, while July maintains a lower humidity level of 66%. For a more detailed look at July's weather, you can visit Corpus Christi weather in July.

In comparing the weather between August and September, we see notable differences in temperature and precipitation. September brings cooler morning temperatures with a minimum of 16°C (61°F) and an average of 28°C (82°F), contrasting with August's warmer minimum of 22°C (72°F) and an average of 29°C (85°F). Moreover, September experiences more frequent rainfall, with a total precipitation of 122 mm (4.8 in) over 15 days, compared to August’s 70 mm (2.8 in) across 10 days. Humidity also rises in September, averaging 73%, compared to August's 65%. For more detailed insights on August weather, you can visit Corpus Christi weather in August.

September and October showcase a notable shift in weather patterns. September features warmer temperatures with a minimum of 16°C (61°F) and an average high of 35°C (96°F), accompanied by significant precipitation, totaling 122 mm (4.8 in) over 15 days and a humidity level of 73%. In contrast, October experiences cooler mornings with a minimum of just 5°C (41°F) but still boasts a comfortable average of 24°C (76°F) and a maximum of 36°C (97°F). The month also sees reduced rainfall at 72 mm (2.8 in) over 11 days, with humidity slightly higher at 76%. For more specific insights, you can visit Corpus Christi weather in October.

In September, the weather is characterized by warmer temperatures, with minimums around 16°C (61°F), average highs reaching 28°C (82°F), and extremes peaking at 35°C (96°F). The humidity is relatively high at 73%, and the month experiences considerable rainfall, totaling 122 mm (4.8 in) across about 15 days. In contrast, November sees a significant drop in temperature, with minimums of 0°C (33°F) and an average of 19°C (67°F). While the maximum temperatures can still be as high as 32°C (90°F), the overall precipitation is much lower at 49 mm (1.9 in) over just 6 days, accompanied by a higher humidity of 80%. For more detailed information about the weather in November, check Corpus Christi weather in November.

In September, the weather is characterized by warm temperatures, with a minimum of 16°C (61°F) and an average high of 28°C (82°F), peaking at a scorching 35°C (96°F). This month also sees significant rainfall, with 122 mm (4.8 in) spread across 15 days and average humidity hovering around 73%. In contrast, December experiences much cooler conditions, with temperatures ranging from a low of 0°C (33°F) to a mild average of 16°C (62°F), and a maximum of 31°C (88°F). Additionally, December is notably drier, receiving only 46 mm (1.8 in) of precipitation over just 5 days, although humidity rises to 86%. For more details, you can check Corpus Christi weather in December.

Compare Corpus Christi's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Corpus Christi

As summer transitions to fall, September in Corpus Christi offers a unique blend of warm temperatures and increased rainfall. While daytime highs remain warm, averaging around 28°C (82°F), the evenings bring relief with cooler nights that dip to 16°C (61°F). This month is distinct, as it experiences a noticeable uptick in humidity and precipitation, with significant rainfall occurring on about half the days. Compared to the dry, sweltering months of summer, September’s weather feels more humid and lively, making it a transitional period that balances warmth with the refreshing promise of fall. To learn more about how September fits into the broader climate of this coastal city, check out Corpus Christi Climate.