September Weather in El Bajio, Mexico

Last updated: April 22, 2025

In September, El Bajio, Mexico experiences a diverse climate characterized by maximum temperatures reaching up to 28°C (82°F) and an average temperature of 20°C (68°F), while lows can drop to 11°C (51°F). The region sees significant rainfall, with a total precipitation of 224 mm (8.8 in) spread over 24 days, contributing to an overall humidity level of 86%. This combination of warm temperatures and frequent showers creates a lush environment, perfect for exploring the vibrant landscapes of El Bajio during this dynamic month.

September Temperature in El Bajio

In September, El Bajio enjoys a gentle transition from summer to fall, characterized by mild temperatures and an inviting climate. The average daily temperature hovers around 20°C (68°F), with daytime highs reaching a comfortable 28°C (82°F) and nighttime lows settling at about 11°C (51°F). This month reflects a consistency in warmth similar to August, making it a pleasant time to explore the region. As the season shifts, the decreasing maximum temperatures hint at the cooler days ahead, while still offering plenty of sunshine and warmth. Whether you're walking through vibrant markets or enjoying the local cuisine, September's climate provides an ideal backdrop for experiencing the rich culture of this beautiful region in Mexico.

September Weather in El Bajio: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in El Bajio, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec586063666868676868666158
Data source: Temperature data for El Bajio 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 El Bajio

In September, El Bajio experiences a significant uptick in rainfall, with precipitation levels reaching 224 mm (8.8 in), making it one of the wettest months of the year. This increase is reflected in the number of rainy days, totaling 24, which ties with June for the highest in the annual cycle. The data indicates a clear trend of escalating precipitation leading into the autumn months, following the rainy peaks of May and June. Notably, September's rainfall is higher than in both August and October, suggesting a robust monsoon influence that persists into the fall. As the year transitions, El Bajio's climatic rhythm is characterized by these periodic bursts of moisture, providing both challenges and nourishment to the region's agriculture.

September Precipitation Trends in El Bajio

The chart displays monthly precipitation patterns in El Bajio, 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.
JanFebMarAprMayJunJulAugSepOctNovDec11710715117527830111116122418413393
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in El Bajio

In El Bajio, Mexico, September marks a notable shift in humidity levels, settling at 86%. This slight increase from the preceding months, where humidity hovered around 81-82%, is indicative of the transitional weather as the region moves towards the more humid autumn months. As the year progresses, humidity consistently rises, peaking at 90% in October and reaching 91% by November and December. This trend highlights the region's overall high moisture levels, particularly during the latter part of the year, creating a lush and vibrant atmosphere that characterizes the local climate.

September Average Humidity in El Bajio

This chart illustrates the average monthly humidity levels in El Bajio, 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.
JanFebMarAprMayJunJulAugSepOctNovDec88%86%84%81%82%81%81%82%86%90%91%91%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in El Bajio

In September, El Bajio, Mexico continues to experience a notably high UV Index of 14, classified under the extreme exposure category. With a burn time of just 10 minutes, the summer’s intensity lingers, reminding residents and visitors alike to take necessary precautions against sun exposure. This month maintains a trend seen from June to August, where the UV Index reached its peak at 15, followed by a slight dip as the region transitions into autumn. Despite the slight decrease, it's clear that the sun remains potent in September, making sun safety a crucial consideration. For more detailed insights on UV levels throughout the year, check out the El Bajio UV Index.

Maximum UV Index Levels in El Bajio for September

The chart shows the monthly maximum UV Index (UVI) for El Bajio 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.
JanFebMarAprMayJunJulAugSepOctNovDec10121415151515141413109
Data source: El Bajio 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 El Bajio

In El Bajio, Mexico, September ushers in a gentle decline in sunshine hours, with the month basking in 289 hours of brilliant light. Following a vibrant summer peak, where July and August flaunted an impressive 325 and 316 hours respectively, September marks a transition as the days grow shorter, yet remain pleasantly bright. The year so far showcases a clear upward trend in sunlight leading into the summer months, with May and June radiating their own charm at 322 and 292 hours. As autumn approaches, the lingering warmth of September remains inviting, ensuring that the region continues to be a haven for sun-seekers before the cooler months settle in.

Monthly Sunshine Duration in El Bajio: September Highlighted

The September sunshine duration represents the total number of hours El Bajio 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.
JanFebMarAprMayJunJulAugSepOctNovDec231h271h312h311h322h292h325h316h289h301h289h295h
Data source: El Bajio September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in El Bajio During September

In El Bajio, Mexico, the likelihood of sunny weather in September is notably low, with only an 18% chance of sunshine. This trend marks a significant dip compared to earlier summer months, where August and July offer a comparatively brighter 37% and 30% chance, respectively. As the region transitions from the scorching summer, the chances of rain increase, contributing to September's generally overcast skies. Despite the lower likelihood of sunny days, this month serves as a prelude to the more favorable weather conditions that return in October, making it a time of noticeable climatic shifts in this vibrant locale.

Percentage of Sunny Days in September in El Bajio

The chart illustrates the percentage of sunny days in El Bajio 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 El Bajio experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec31%52%53%47%37%11%30%37%18%29%32%63%
Data source: El Bajio September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in El Bajio in September

In September, El Bajío, Mexico basks in approximately 12 hours of daylight, mirroring the duration experienced in both March and August. This month marks a gentle transition as daylight begins to recede after its peak in the summer months of May through July, when residents enjoy the longest days at 13 hours. The gradual shift from longer to shorter days not only signifies the onset of fall but also invites a subtle shift in the region's landscape and lifestyle, as the vibrant hues of autumn start to emerge. As days shorten, the rhythmic cycle of nature continues, reminding us of the balance and beauty found in these fleeting moments of natural light.

Average Daylight Hours in El Bajio for September

The chart illustrates the variation in daylight duration in El Bajio throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec11h 7m11h 31m12h 2m12h 34m13h 1m13h 14m13h 7m12h 43m12h 12m11h 41m11h 13m11h
Data source: El Bajio daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in El Bajio

As September rolls in El Bajio, Mexico, the average wind speed subtly slows to 1.3 m/s (3 mph), marking a gentle transition from the vibrant summer months. This month typically reflects a gradual decline in wind intensity, mirroring the trend observed over the preceding months. After reaching a peak of 1.8 m/s (4 mph) in April, the winds gradually eased, highlighting a shift towards the milder breezes of autumn. While the cooling air currents in September may evoke a sense of calm, they also set the stage for the vibrant color changes that the upcoming months promise. The consistent light winds throughout the year create a serene backdrop for the natural beauty of El Bajio, inviting residents and visitors alike to bask in its tranquil charm.

Average September Wind Speed in El Bajio

The chart displays monthly wind speed patterns in El Bajio, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1.51.71.71.81.41.31.41.51.3 m/s1.41.41.5
Data source: El Bajio September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in El Bajio Compares to Other Months

The weather in El Bajio 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 El Bajio and find detailed weather information for every month.

September and January present distinct weather patterns. In September, temperatures range from a minimum of 11°C (51°F) to a maximum of 28°C (82°F), with an average temperature of 20°C (68°F). The month is characterized by substantial rainfall, totaling 224 mm (8.8 in) over 24 days, and an average humidity of 86%. In contrast, January offers cooler conditions, with temperatures peaking at 27°C (81°F) and dipping to a minimum of 3°C (38°F), resulting in a more temperate average of 14°C (58°F). While January experiences significantly less rainfall at 117 mm (4.6 in) over 14 days, it maintains a slightly higher humidity level at 88%. For more detailed information, you can check El Bajio weather in January.

September and February present contrasting weather conditions, despite both months maintaining an unchanged humidity level of 86%. In September, temperatures range from a minimum of 11°C (51°F) to a maximum of 28°C (82°F), with an average of 20°C (68°F). The month is also characterized by significant precipitation, totaling 224 mm (8.8 in) over 24 days. In contrast, February experiences cooler temperatures, with a minimum of 5°C (41°F) and an average of 16°C (60°F), although it can reach up to 30°C (87°F). Precipitation during this month is noticeably lower at 107 mm (4.2 in) over just 14 days. For more detailed information about February weather, you can check El Bajio weather in February.

In September, the weather tends to be warmer and more humid compared to March. With average temperatures ranging from a minimum of 11°C (51°F) to a maximum of 28°C (82°F), September also sees a higher level of precipitation at 224 mm (8.8 in) over 24 days, contributing to a humidity level of 86%. In contrast, March boasts slightly cooler temperatures, with a minimum of 7°C (45°F) and a maximum of 30°C (86°F). The overall precipitation is lower at 151 mm (5.9 in) across just 13 days, resulting in a humidity level of 84%. For those interested in more specific insights on March weather, check out El Bajio weather in March.

When comparing the weather in September and April, we see some notable differences. September tends to be slightly warmer, with average temperatures around 20°C (68°F) and a maximum of 28°C (82°F), compared to April’s average of 19°C (66°F) and a higher maximum of 33°C (91°F). Rainfall is more frequent in September, with 224 mm (8.8 in) over 24 days, while April sees less precipitation at 175 mm (6.9 in) over 18 days. Additionally, humidity levels are higher in September at 86%, compared to April's 81%. For more detailed information on April weather, visit El Bajio weather in April.

In comparing September and May weather, both months share similar average temperatures, with minima around 11°C (51°F) in September and 11°C (52°F) in May, and averages of 20°C (68°F) in both months. However, May tends to be slightly warmer at its maximum, reaching up to 30°C (86°F), while September peaks at 28°C (82°F). Precipitation is noticeably higher in May, totaling 278 mm (10.9 in) over 22 days compared to September's 224 mm (8.8 in) over 24 days, reflecting a wetter climate early in the summer. Humidity levels are also high, with September at 86% and May slightly lower at 82%. For a more detailed look at May weather, check the link: El Bajio weather in May.

In comparing the weather between September and June, both months showcase a similar average temperature of 20°C (68°F). However, September experiences slightly cooler nights with a minimum temperature of 11°C (51°F), while June begins with a minimum of 12°C (54°F). June tends to be marginally warmer overall, reaching a maximum of 29°C (84°F) compared to September's 28°C (82°F). When it comes to precipitation, June is noticeably wetter, receiving 301 mm (11.9 in) over 24 days, compared to September's 224 mm (8.8 in) over the same number of days, resulting in higher humidity levels in June at 81%, compared to September's 86%. For more detailed insights, check the El Bajio weather in June.

In comparing the weather of September and July, both months share similar minimum temperatures, hovering around 11°C (51°F) to 11°C (52°F). However, September tends to be warmer overall, with an average temperature of 20°C (68°F) compared to July's average of 19°C (67°F). Notably, September experiences significantly higher precipitation, totaling 224 mm (8.8 in) over 24 days, while July sees much less rainfall, with only 111 mm (4.4 in) across 17 days. The humidity is also higher in September at 86%, compared to July's 81%. For additional details on July weather, you can visit El Bajio weather in July.

In comparing the weather conditions of September to August, we observe that both months have similar temperature ranges, with minimum temperatures around 11°C, average temperatures of 20°C, and maximums reaching 28°C. However, September is characterized by significantly higher precipitation, totaling 224 mm over 24 days, compared to August's 161 mm over 21 days. This increase in rainfall is accompanied by slightly higher humidity levels in September at 86%, compared to 82% in August. For more detailed information about August weather, you can visit El Bajio weather in August.

In September, the weather showcases a warm average temperature of 20°C (68°F), with highs reaching up to 28°C (82°F). However, the month is characterized by significant precipitation, totaling 224 mm (8.8 in) over 24 days, and a humidity level of 86%. Transitioning into October, temperatures slightly dip, with an average of 19°C (66°F) and minimums around 9°C (48°F), while the maximum remains similar at 28°C (83°F). Precipitation decreases to 184 mm (7.3 in) across 21 days, and humidity climbs slightly to 90%. For more detailed insights into October weather, visit El Bajio weather in October.

In September, the weather is generally warmer, with temperatures ranging from a minimum of 11°C (51°F) to a maximum of 28°C (82°F) and an average of 20°C (68°F). This month also experiences significant precipitation, totaling 224 mm (8.8 in) over 24 days, coupled with high humidity at 86%. In contrast, November sees cooler temperatures, with a minimum of 7°C (45°F), an average of 16°C (62°F), and a maximum of 26°C (80°F). Precipitation decreases to 133 mm (5.2 in) over 17 days, while humidity rises slightly to 91%. For more details on what to expect, you can check out El Bajio weather in November.

September weather presents a warmer and more humid environment compared to December. With average temperatures around 20°C (68°F) and highs reaching up to 28°C (82°F), September experiences significant rainfall, averaging 224 mm (8.8 in) over 24 days. In contrast, December sees a noticeable drop in temperatures, with an average of 15°C (59°F) and a maximum of 27°C (81°F). Precipitation also decreases significantly to about 93 mm (3.7 in) across just 13 days, albeit with slightly higher humidity levels of 91%. For more details on December conditions, you can check El Bajio weather in December.

Compare El Bajio's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in El Bajio

As September rolls into El Bajio, the region experiences a notable shift in weather dynamics. Unlike the drier months, this time of year brings increased humidity and frequent rainfall, with precipitation days reaching almost every third day. The temperatures remain pleasantly mild, hovering around an average of 20°C, yet the higher humidity levels make it feel warmer. While the maximum temperatures peak at a comfortable 28°C, the significant rainfall, totaling 224 mm, makes September a transitional month, preparing the area for the lush greenery that follows. For more insights into the region's weather patterns, check out the detailed overview at El Bajio Climate.