September Weather in El Bajio, Mexico

Last updated: April 22, 2025

September in El Bajio, Mexico is characterized by warm temperatures and a high humidity level, creating a tropical atmosphere. The maximum temperature can soar to 34°C (94°F), while the average temperature remains comfortably around 28°C (83°F). With a minimum temperature of 23°C (74°F), the nights are pleasantly warm. This month also marks a significantly wet period, with a total rainfall of 165 mm (6.5 in) spread over approximately 21 days, highlighting the prevalent rainy season. Visitors should be prepared for the humidity, which averages around 83%, adding to the lush landscape and vibrant flora typical of the region during this time.

September Temperature in El Bajio

In September, El Bajio experiences a warm transition into autumn, with temperatures reflecting the lingering heat of summer. The month starts with a minimum of 23°C (74°F), ensuring mild evenings, while daytime temperatures average around 28°C (83°F) and peak at 34°C (94°F). This slight dip from the preceding months suggests a gradual cooling trend, although the region retains a balmy atmosphere, perfect for outdoor activities. With temperatures remaining comfortably high, September serves as a bridge between the sweltering summer and the cooler months ahead, inviting visitors to enjoy the rich cultural festivities that accompany this vibrant time of year.

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.
JanFebMarAprMayJunJulAugSepOctNovDec697072757982858483827771
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

September in El Bajio, Mexico, continues the region's pattern of seasonal rainfall, delivering a substantial 165 mm (6.5 in) of precipitation over 21 days. This month follows a record-breaking August, where 238 mm fell, marking a peak in the rainy season. The trend shows a significant transition from the dry months of the year—March to May recorded no rainfall at all—to a more vibrant landscape drenched in moisture from June through September. As summer gives way to autumn, September solidifies its role in the region’s hydrological cycle, showcasing the importance of late summer rains in replenishing the area's water resources and supporting 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.
JanFebMarAprMayJunJulAugSepOctNovDec1120000298523816581813
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 September, El Bajio experiences a peak in humidity at a notable 83%, maintaining the high levels established in the preceding months of July and August. This slight increase marks the end of the summer season, indicating a transition into the cooler months. The trend observed throughout the year reveals a gradual decline in humidity from the winter months, with the percentages dipping to 56% in April before climbing back up in the summer. As the region begins to prepare for fall, the humidity remains notably high, suggesting a lingering warmth and moisture in the air that characterizes this vibrant locale.

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.
JanFebMarAprMayJunJulAugSepOctNovDec74%66%61%56%61%73%82%83%83%79%77%78%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in El Bajio

As the summer fades into September in El Bajio, Mexico, the UV Index remains high, peaking at 12, which falls into the extreme exposure category. This means that sun lovers must exercise caution, as the burn time is just 10 minutes. The region has experienced an upward trend in UV Index values over the months, transitioning from a moderate 7 in January to the extreme levels seen from March through September. Even as we move toward autumn, the UV Index starts to decline slightly in October, but September serves as a reminder of the intense sun exposure typical of El Bajio during this time of year. To stay safe while enjoying the outdoors, be sure to check the forecasts at El Bajio UV Index for the latest updates.

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.
JanFebMarAprMayJunJulAugSepOctNovDec710111313121212121086
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 September, El Bajio, Mexico, enjoys a delightful decline in sunlight hours, totaling 275 hours, as summer begins to fade into autumn. This month serves as a soft transition, following the peak of 355 hours witnessed in May. The sunshine gradually tapers off, with September's hours slightly below the vibrant August's 292 hours, yet it still offers a warm embrace as the region prepares for cooler days ahead. Overall, the pattern reflects a steady decrease from the sun-drenched heights of summer, perfectly encapsulating the beauty of changing seasons while maintaining a generous share of sunny days.

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.
JanFebMarAprMayJunJulAugSepOctNovDec222h261h316h326h355h325h324h292h275h292h276h275h
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, September presents a noteworthy shift in weather patterns, where the likelihood of sunny days drops to 33%, aligning with the rainy season's peak. This trend contrasts sharply with the vibrant sunshine of the preceding months, particularly May, which boasts an impressive 81% chance of clear skies. As summer wanes, residents and visitors can expect a significant decrease in sunny weather, reminiscent of July and August, where chances further plummet. Interestingly, this pattern suggests a seasonal transition, with October offering a more favorable 58% likelihood of sunshine, providing a glimpse of better weather ahead.

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.
JanFebMarAprMayJunJulAugSepOctNovDec64%64%59%68%81%47%33%21%33%58%61%59%
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 El Bajio, Mexico, the rhythm of daylight unfolds beautifully throughout the year, with September showcasing a generous 12 hours of sunlight. Following the peak of summer, where daylight stretches to its maximum in May through July, September marks a subtle transition towards shorter days. The consistent 12 hours in September reflects a gentle tapering from the summer’s abundance, while still offering plenty of daylight for outdoor activities and enjoying the region's vibrant landscapes. As the months progress, daylight begins to wane, heading into the cooler months of October and November, where hours decrease to 11 before settling at 10 in December. This seasonal ebb and flow highlight the captivating cycle of light that characterizes life in El Bajio.

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.
JanFebMarAprMayJunJulAugSepOctNovDec10h 52m11h 22m12h 1m12h 42m13h 15m13h 31m13h 22m12h 53m12h 14m11h 34m11h10h 42m
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 arrives in El Bajio, Mexico, the region experiences a gentle lull in wind intensity, with average speeds dipping to 1.5 m/s (3 mph). This slight decrease marks a shift from the more invigorating breezes of summer, which peaked in June at 2.1 m/s (5 mph). Interestingly, the winds remain consistently mild throughout the year, with most months hovering around the 4 mph mark. Although September brings a softer breeze, it creates a tranquil atmosphere that complements the vibrant fall colors, inviting residents and visitors alike to enjoy the serene landscapes. As the season progresses into October, wind speeds are expected to gradually reclaim their earlier strength, setting the stage for a refreshing autumn.

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.
JanFebMarAprMayJunJulAugSepOctNovDec1.91.82.01.92.02.11.61.71.5 m/s1.71.71.6
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 contrasting weather patterns. In September, temperatures range from a minimum of 23°C (74°F) to a maximum of 34°C (94°F), with an average of 28°C (83°F). The month is characterized by significant rainfall, experiencing 165 mm (6.5 in) of precipitation over 21 days, contributing to a high humidity level of 83%. Conversely, January features much cooler conditions, with temperatures varying from a minimum of 9°C (48°F) to a maximum of 31°C (89°F) and an average of 21°C (69°F). Notably, January is dry, with only 11 mm (0.4 in) of precipitation over the course of the month and no rainy days, coupled with a lower humidity of 74%. For more detailed insights, you can check El Bajio weather in January.

September and February present strikingly different weather patterns. September typically features warm temperatures, with a minimum of 23°C (74°F) and an average of 28°C (83°F), peaking at 34°C (94°F). This month also brings considerable rainfall, averaging 165 mm (6.5 in) over 21 days, accompanied by high humidity levels of 83%. In contrast, February experiences much cooler temperatures, with a minimum of 11°C (52°F) and an average of 21°C (70°F), while still reaching a maximum of 33°C (91°F). Precipitation is minimal in February, with only 20 mm (0.8 in) expected over just 1 day and humidity dropping to 66%. For more detailed insights, check out El Bajio weather in February.

When comparing the weather in September and March, notable differences emerge. September is characterized by warm to hot temperatures, with averages around 28°C (83°F) and highs reaching up to 34°C (94°F). It also experiences significant rainfall, with around 165 mm (6.5 inches) falling over 21 days, contributing to a high humidity level of 83%. In contrast, March boasts much cooler temperatures, with a minimum of 10°C (51°F) and an average of 22°C (72°F), peaking at 33°C (91°F). Remarkably, March is dry, with no recorded precipitation across the month and lower humidity at 61%. For more details on the typical conditions during this time, check out El Bajio weather in March.

September and April present contrasting weather patterns. In September, temperatures range from a minimum of 23°C (74°F) to a maximum of 34°C (94°F), with an average of 28°C (83°F). This month is characterized by high humidity at 83% and significant rainfall, accumulating 165 mm (6.5 in) over 21 days. In contrast, April features a milder climate, with temperatures varying from a cooler 13°C (56°F) to the same maximum of 34°C (94°F), but with a much lower average of 24°C (75°F). Remarkably, April sees no precipitation at all, showcasing a dry spell with humidity levels at a comfortable 56%. For more insights into what to expect during this month, you can check out El Bajio weather in April.

When comparing the weather in September and May, there are notable differences in temperature, precipitation, and humidity. September boasts warmer temperatures, with a minimum of 23°C (74°F) and an average of 28°C (83°F), peaking at 34°C (94°F). However, it is also marked by significant rainfall, accumulating 165 mm (6.5 in) over 21 days and high humidity levels at 83%. In contrast, May features a milder temperature range that starts at a minimum of 16°C (61°F) and averages around 26°C (79°F), reaching a maximum of 35°C (96°F). Notably, May experiences no precipitation, ensuring a dry month with humidity levels at a more comfortable 61%. For more insights on weather specifics, you can check El Bajio weather in May.

In comparing the weather of September and June, it's clear that both months experience similar average temperatures around 28°C (83°F), but there are notable differences in other aspects. June tends to be slightly hotter, with a maximum temperature reaching up to 36°C (97°F), compared to a maximum of 34°C (94°F) in September. Additionally, September is marked by significantly higher precipitation, with 165 mm (6.5 in) over 21 days, while June sees much less rain at only 29 mm (1.1 in) across just 3 days. Humidity levels are also higher in September at 83%, compared to 73% in June, contributing to a more tropical feel. For more detailed information on June weather, you can check this link: El Bajio weather in June.

In comparing the weather between September and July, we notice some notable differences. September generally experiences a slightly lower average temperature of 28°C (83°F) compared to July's warmer average of 29°C (85°F). However, July sees maximum temperatures that can soar up to 37°C (99°F), significantly higher than September's peak of 34°C (94°F). Rainfall is more prevalent in September, with 165 mm (6.5 in) of precipitation occurring over 21 days, whereas July receives only 85 mm (3.4 in) across 12 days. Interestingly, humidity levels remain quite similar, with September at 83% and July at 82%. For more detailed weather insights, visit El Bajio weather in July.

In comparing the weather between August and September, both months exhibit similar minimum temperatures of 23°C (74°F) and consistent high humidity levels at 83%. However, August tends to be slightly warmer, with an average temperature of 29°C (84°F) and a maximum of 35°C (95°F), compared to September's average of 28°C (83°F) and maximum of 34°C (94°F). Additionally, August experiences significantly higher precipitation, totaling 238 mm (9.4 in) over 21 days, while September sees about 165 mm (6.5 in) of rainfall, also over 21 days. For further details on August weather, you can refer to El Bajio weather in August.

In September, the weather is typically warmer and more humid, with temperatures ranging from a minimum of 23°C (74°F) to a maximum of 34°C (94°F) and an average of 28°C (83°F). The month sees significant rainfall, totaling 165 mm (6.5 inches) over 21 days, contributing to a high humidity level of 83%.

In contrast, October features slightly cooler temperatures, with a minimum of 20°C (67°F) and a peak at 35°C (95°F), while still maintaining an average of 28°C (82°F). The precipitation dramatically decreases to 81 mm (3.2 inches) over just 8 days, resulting in a lower humidity of 78%. This shift makes October a drier and more comfortable month compared to September. For a deeper look into October's climate specifics, you can refer to El Bajio weather in October.

In September, the weather is characterized by warm temperatures, with a minimum of 23°C (74°F) and an average of 28°C (83°F), reaching highs of 34°C (94°F). This month also sees significant rainfall, totaling 165 mm (6.5 in) across 21 days, coupled with high humidity at 83%. In contrast, November experiences much cooler temperatures, with a minimum of 15°C (59°F) and an average of 25°C (77°F), while still reaching up to 34°C (94°F) on warmer days. Notably, November has minimal precipitation, with only 8 mm (0.3 in) over just 1 day, and slightly lower humidity at 77%. For more details, check out El Bajio weather in November.

September typically features much warmer weather compared to December, with average temperatures reaching 28°C (83°F) and highs soaring up to 34°C (94°F). In contrast, December offers a cooler climate, with an average temperature of 22°C (71°F) and a maximum of 32°C (90°F), while enjoying significantly less rainfall—only 13 mm (0.5 in) over the course of the month, compared to September's 165 mm (6.5 in) over 21 rainy days. Additionally, humidity levels are slightly lower in December at 78%, compared to September’s 83%. For a more detailed look at December weather 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 in, El Bajio ushers in a striking transformation in its weather patterns. This month is characterized by higher humidity levels and frequent rainfall, making it notably wetter than the drier summer months. Temperatures reach a warm average of 28°C, but the combination of increased precipitation and humidity can create a sultry atmosphere. As the landscape flourishes under the nourishing rains, this time of year not only heralds a climatic shift but also revitalizes the vibrant flora and fauna of the region. For more details on what to expect throughout the year, explore the full El Bajio Climate information.