Last updated: April 22, 2025
In September, the weather in Nuevo Leon, Mexico is characterized by mild temperatures, with a maximum of 27°C (81°F) and an average of 20°C (68°F), while nights can drop to a cool 13°C (56°F). This month also brings substantial rainfall, totaling 518 mm (20.4 in) over 29 days, creating a lush and vibrant landscape. High humidity levels at 87% add to the tropical feel, making September a time of dramatic shifts between sunshine and showers, perfect for experiencing the region's natural beauty amid its rich cultural backdrop.
In September, Nuevo Leon, Mexico, experiences a comfortable transition as summer slowly gives way to autumn. With minimum temperatures hovering around 13°C (56°F) and maximums reaching 27°C (81°F), the month maintains an average of 20°C (68°F), striking a perfect balance for outdoor activities. This trend shows consistency with the previous months, providing a gentle drop in maximum temperatures from the height of summer while keeping nights pleasantly mild. As humidity begins to wane, September offers a welcoming climate, ideal for exploring the region's vibrant culture and stunning landscapes.
September marks a significant peak in rainfall for Nuevo Leon, Mexico, as the region receives 518 mm (20.4 in) of precipitation over an impressive 29 days of the month. This deluge follows an already heavy summer, particularly August, which also saw substantial accumulation. The consistent rains in September maintain the region's lush landscape, but they also signal the culmination of the rainy season. This trend of heightened precipitation during late summer and early autumn underscores a vital climatic pattern, reflecting the transition from the dry months that precede this seasonal deluge. With rain stretching across nearly every day, September serves as a critical period for replenishing water resources, setting the stage for the drier months ahead.
September in Nuevo Leon, Mexico, marks a continuation of the humid conditions that begin to take hold in late summer. With humidity levels soaring to 87%, September mirrors the sticky atmosphere of August, which also sits at 87%. This trend highlights a peak in moisture before the gradual rise in humidity in the following months, averaging around 88% from October through December. As the year progresses, residents and visitors alike can expect a notable shift from the drier months of early spring, reinforcing the region's reputation for a hot and humid climate during this time of year. The consistency in high humidity levels not only influences daily comfort but also plays a significant role in the local ecosystem and agriculture.
September in Nuevo Leon, Mexico, continues the trend of extremely high UV radiation with a UV Index of 14, indicating a burn time of only 10 minutes. This month maintains the intense solar exposure characteristic of the summer period, as seen from the exceptional UV Index values from April through August, where the index remained consistently at 15. Although slightly lower than in the peak summer months, the UV levels in September still demand vigilance and careful sun protection. As the year transitions toward cooler temperatures, both residents and visitors should stay informed about the UV Index to ensure safety under the Mexican sun. For more detailed information, visit Nuevo Leon UV Index.
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In September, Nuevo Leon enjoys 291 hours of sunshine, a beautiful continuation of the region's warm and bright months. After a peak in July at 328 hours of sunlight, the hours gradually eased through August and into September, showcasing a steady transition into autumn. This shift reflects a slight cooling trend while still embracing the gentle warmth that characterizes late summer. Compared to the earlier months of the year, like January's 250 hours and February's 286 hours, September's sunlight highlights the region's progression toward its bountiful fall season, ensuring that both locals and visitors can bask in the inviting glow of the Mexican sun.
In Nuevo Leon, Mexico, the likelihood of sunny weather in September is quite low, hovering at just 17%. This places it among the least sunny months of the year, alongside the peak of the rainy season. Following a generally bright start to the year, with sun probabilities reaching up to 82% in February, the chances of clear skies steadily decline as summer approaches. By the time September rolls around, residents and visitors alike are met with a mix of overcast days and scattered showers, a stark contrast to the sun-drenched days of early spring. As fall begins, the sun does start to peek out again, ramping up to 33% in October, hinting at a gradual return of sunnier days ahead.
As September rolls in, Nuevo León, Mexico experiences a steady 12 hours of daylight, maintaining the balance seen in previous months like March through August. This period signifies a transition, with daylight gradually diminishing from the summer peak of 13 hours in June, settling into the shorter days of fall. The consistency in daylight during September reflects a smooth seasonal shift, offering residents a perfect blend of sunlit hours to enjoy before the countdown to winter begins. This gradual decrease continues into October, where daylight returns to 11 hours, echoing the earlier months of the year.
As September rolls into Nuevo Leon, Mexico, the winds take on a subtle yet distinct character. With an average wind speed of 1.2 m/s (3 mph), September represents one of the quieter months for breezes, continuing a downward trend that began in the late spring. This gentle airflow provides a soothing backdrop as summer's heat begins to wane, offering a reprieve from the sweltering days of July and August. Interestingly, this month's wind speed is among the lowest of the year, hinting at a gradual transition toward the more blustery conditions that typically emerge in the fall. As the landscape shifts and autumn approaches, residents can savor the calming presence of September's winds.
The weather in Nuevo Leon 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 Nuevo Leon and find detailed weather information for every month.
In September, the weather is generally warmer and much more humid compared to January. With average temperatures around 20°C (68°F) and maximums reaching up to 27°C (81°F), September experiences frequent rain, totaling 518 mm (20.4 in) over 29 days. In contrast, January sees cooler temperatures, with a minimum of 7°C (45°F) and an average of 17°C (64°F), accompanied by significantly lower precipitation of just 21 mm (0.8 in) over only 5 days. Overall, while both months can reach a maximum of 27°C, September is characterized by higher humidity and rainfall, making it feel quite different from the drier and cooler January weather. For more specific details, you can check Nuevo Leon weather in January.
September and February showcase distinct differences in weather patterns. September is characterized by warmth, with average temperatures ranging from a minimum of 13°C (56°F) to a maximum of 27°C (81°F), coupled with high humidity at 87%. However, it experiences substantial rainfall, totaling 518 mm (20.4 in) over 29 days. In contrast, February presents milder temperatures, with minimums around 8°C (46°F) and maximums reaching 29°C (84°F). This month features significantly less precipitation, with only 7 mm (0.3 in) falling on just 2 days, and a lower humidity of 76%. For more detailed insights on the weather in February, check out Nuevo Leon weather in February.
September and March present contrasting weather patterns. In September, temperatures range from a low of 13°C (56°F) to a high of 27°C (81°F), with an average of 20°C (68°F). This month experiences considerable rainfall, totaling 518 mm (20.4 in) across 29 days, accompanied by high humidity levels at 87%. In contrast, March sees slightly cooler temperatures, with a minimum of 11°C (52°F) and a maximum of 29°C (85°F), averaging the same 20°C (68°F) as September. However, March is markedly drier, receiving only 23 mm (0.9 in) of precipitation over just 6 days, and the humidity is lower at 66%. For more details on March weather, you can visit Nuevo Leon weather in March.
In comparing the weather of September and April, we see distinct differences in temperature and precipitation patterns. September typically experiences a warmer climate with average highs reaching up to 27°C (81°F), while April can peak at a higher maximum temperature of 30°C (87°F). However, September is characterized by much higher humidity at 87% compared to April's more comfortable 59%. Precipitation also varies significantly; September is marked by 518 mm (20.4 in) of rain over 29 days, making it a much wetter month compared to April's relatively dry 70 mm (2.8 in) over just 12 days. For more details on April weather in Nuevo Leon, you can check out this link: Nuevo Leon weather in April.
September and May present noticeable differences in weather patterns. September tends to be cooler, with an average temperature of 20°C (68°F) compared to May's warmer average of 21°C (70°F). While both months experience frequent rainfall, September sees higher precipitation levels at 518 mm (20.4 in) across 29 days, resulting in significant humidity at 87%. In contrast, May has lower precipitation at 291 mm (11.5 in) over 28 days and a more manageable humidity level of 64%. For more detailed insights on the weather during this month, you can check out Nuevo Leon weather in May.
In comparing the weather patterns of September and June, we observe some notable differences. Both months have a similar average temperature, around 20°C (68°F), but September tends to have a slightly wider range with maximum temperatures reaching 27°C (81°F) compared to June's higher maximum of 29°C (84°F). Precipitation levels are comparable, with September experiencing 518 mm (20.4 in) over 29 days, while June has slightly less at 501 mm (19.7 in) over 28 days. Humidity also plays a significant role, as September boasts a higher humidity level of 87%, contrasted with June's lower 69%. For a more detailed look at weather conditions in this region, you can visit Nuevo Leon weather in June.
In comparing the weather of September and July, we notice some key differences. September experiences slightly cooler average temperatures, with a minimum of 13°C (56°F) and a maximum of 27°C (81°F), compared to July's average of 21°C (69°F) and maximum of 28°C (83°F). However, September brings significantly more rainfall, with precipitation totaling 518 mm (20.4 in) over 29 days, whereas July sees only 269 mm (10.6 in) across 22 days. Additionally, September has a higher humidity level at 87%, compared to July's 82%. For more details, you can check out Nuevo Leon weather in July.
September experiences similar temperatures to August, with minimums around 13°C (56°F) and maximums reaching 27°C (81°F). However, the average temperature in September remains slightly cooler at 20°C (68°F) compared to August's 20°C (69°F). While both months feature high humidity levels at 87%, September sees a significant increase in precipitation, measuring 518 mm (20.4 in) over 29 days, compared to August's 436 mm (17.1 in) over 28 days. This makes September not only wetter but also more consistently cloudy than its predecessor. For those interested in a more detailed overview, you can check the Nuevo Leon weather in August.
September and October share similar temperature ranges, with minimums around 13°C (56°F), averages at 20°C (68°F), and maximums peaking at 27°C (81°F). However, September typically experiences significantly more rainfall, with 518 mm (20.4 in) over 29 days compared to October's 353 mm (13.9 in) across 27 days. The humidity remains high in both months, slightly increasing in October to an average of 88%. This makes October slightly drier, which can lead to a more comfortable outdoor experience. For more detailed information on the weather in this region, check out Nuevo Leon weather in October.
September and November exhibit notable differences in weather conditions. In September, the temperatures range from a minimum of 13°C (56°F) to a maximum of 27°C (81°F), with an average of 20°C (68°F). This month is characterized by high precipitation, totaling 518 mm (20.4 in) over 29 days, contributing to 87% humidity. In contrast, November sees a slight drop in minimum temperature to 9°C (49°F) and a similar maximum of 27°C (80°F), with an average of 19°C (66°F). Precipitation significantly decreases to 70 mm (2.7 in) over 16 days, resulting in a humidity level of 88%. This shift from a wet September to a much drier November reflects a transition into the cooler months of the year. For more details, you can refer to Nuevo Leon weather in November.
September and December present distinct contrasts in weather conditions. September typically offers warmer temperatures, with averages around 20°C (68°F) and peaks hitting 27°C (81°F), while December cools down with average temperatures of 18°C (64°F) and a maximum of 26°C (80°F). Additionally, September is marked by high precipitation, receiving a significant 518 mm (20.4 in) over 29 days, contributing to an humid atmosphere with a humidity level of 87%. In contrast, December experiences far less rain, with only 26 mm (1.0 in) over just five days, while humidity remains similarly high at 88%. For more specific insights on December weather, check out Nuevo Leon weather in December.
As September unfolds in Nuevo Leon, the weather takes on a distinct character compared to the rest of the year. With an average temperature hovering around 20°C (68°F), the month is marked by a blend of warmth and cooler nights, deviating from the hotter summer months. This period also brings an impressive amount of rainfall, with nearly 30 days of precipitation contributing to the region's lush landscapes. The heightened humidity of 87% adds to the tropically charged atmosphere, making September feel both vibrant and a bit damp. For those curious about the overall weather patterns, the Nuevo Leon Climate page offers a comprehensive overview of this dynamic month.