Last updated: April 22, 2025
September in El Bajio, Mexico brings a blend of warm days and cooler nights, with temperatures ranging from a maximum of 29°C (84°F) to a refreshing minimum of 9°C (49°F), averaging around 19°C (66°F). This month is also characterized by notable humidity levels at 81%, contributing to the lush landscape. Visitors can expect 135 mm (5.3 in) of rain over approximately 15 days, making it a key time for the region's vibrant flora. Whether you're exploring the rich cultural heritage or enjoying the natural beauty, September offers a unique experience shaped by these weather patterns.
As the summer wanes, El Bajio, Mexico experiences a gentle transition into September, with temperatures that reflect the changing season. The month welcomes cooler mornings with a minimum of 9°C (49°F), while daytime brings an average of 19°C (66°F), comfortably settling below the summer highs. As the sun rises higher, the maximum temperature reaches about 29°C (84°F), signifying that warm days still linger but are gradually giving way to the freshness of autumn. This pattern highlights a cooling trend from the sweltering summer months, making September an inviting time for outdoor adventures amidst pleasant weather.
September marks a significant shift in precipitation for El Bajio, Mexico, with a striking 135 mm (5.3 in) of rainfall occurring over 15 days. This surge in precipitation is a continuation of the wet season that peaks in mid-summer, yet it remains nearly on par with July’s record of 137 mm (5.4 in). Following August’s substantial 79 mm (3.1 in), September's rains contribute to an overall trend of increasing rainfall, especially from June onward, which sees the most significant accumulations. This pattern underlines the region's gradual transition into the drier months, as October sees a drop to 48 mm (1.9 in), highlighting the contrast between the lushness of September and the impending dryness of fall. The consistent presence of rain not only nourishes the landscape but also sets the stage for seasonal changes ahead.
As summer transitions to fall in El Bajio, September welcomes an increase in humidity, reaching 81%. This noticeable rise follows a series of months where humidity fluctuated, with August dipping to a comfortable 64%. However, the shift toward higher humidity levels in September sets the stage for the wetter months ahead, with October and November expected to be even more humid, averaging around 85% and 87%, respectively. The trend showcases a distinct seasonal pattern; as temperatures drop, the humidity tends to increase, creating a unique atmospheric experience for the region.
As September arrives in El Bajio, Mexico, residents and visitors alike can expect a consistent and intense UV Index of 14, categorizing the exposure as extreme. This marks a continuation of several months characterized by high UV levels, which, since February, have maintained an extreme rating and a remarkably short burn time of just 10 minutes. Interestingly, this pattern is reflective of the region's persistent sun intensity that peaks during the summer months and carries into early autumn. It’s essential to remain vigilant against UV exposure during this time, as even brief moments outdoors can lead to sunburn. For those planning outdoor activities, staying informed is crucial; check out the detailed insights on the UV Index for El Bajio here: El Bajio UV Index.
UV Risk Categories
In September, El Bajio, Mexico, basks in a delightful 297 hours of sunshine, marking a slight dip from the sun-kissed peaks of the summer months. As we transition from the vibrant heat of May with its impressive 350 hours to the more tempered light of fall, September still enjoys abundant sunshine, though less than its preceding summer cousins, June and July, both with 332-335 hours. This pattern not only highlights the region's warm climate but also suggests a gradual cooling as the year progresses, with hours of sunshine tapering off as autumn draws near. The trend of fewer sunlight hours continues into October, hinting at the season’s shift, yet September remains a vibrant choice for sun-seekers looking to soak up the last vestiges of summer glow before the cool breezes set in.
September in El Bajio, Mexico, presents a notable shift in weather patterns, with a chance of sunny skies dropping to just 26%. This decline comes after a summer characterized by some of the lowest probabilities of sunshine in the year, particularly in July (29%) and August (46%). As the region transitions into autumn, the likelihood of sun remains considerably lower compared to the earlier months of the year, where sun chances peak at 82% in February. Thus, visitors looking for consistent sunny weather would do well to plan their trips earlier in the year, as September marks a clear departure from the brighter days of late spring and summer.
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.
In September, the winds of El Bajio, Mexico, whisper gently at an average speed of 1.9 m/s (4 mph), tying the month with July for the calmest breezes of the year. Following a summer of slightly more robust winds in July and August, this lull marks the transition into the more stable autumn months. Notably, September's breezes are a soothing backdrop to the region’s lush landscapes, hinting at the approaching seasonal changes as wind speeds gradually begin to rise again in October. This tranquil period not only enhances the beauty of the area but also invites locals and visitors alike to enjoy the serene outdoor experiences that El Bajio has to offer.
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 cool 9°C (49°F) at night to a warm 29°C (84°F) during the day, with an average of 19°C (66°F). This month sees considerable rainfall, accumulating 135 mm (5.3 in) over approximately 15 days, and maintaining a high humidity level of 81%. In contrast, January experiences much colder temperatures, with lows dropping to -1°C (31°F) and daytime highs reaching 26°C (79°F), averaging at 13°C (55°F). Additionally, precipitation is significantly lower, measuring just 18 mm (0.7 in) over only 3 days, coupled with a slightly reduced humidity of 75%. For more details on January weather, you can visit El Bajio weather in January.
September and February exhibit contrasting weather patterns in terms of temperature, precipitation, and humidity. In September, temperatures range from a cool minimum of 9°C (49°F) to a warm maximum of 29°C (84°F), with an average of 19°C (66°F). This month also sees substantial rainfall, totaling 135 mm (5.3 in) over approximately 15 days, contributing to a higher humidity level of 81%.
In stark contrast, February experiences milder temperatures, with a minimum of 1°C (34°F) and a maximum of 30°C (85°F), averaging 15°C (59°F). Notably, February is much drier, receiving only 11 mm (0.4 in) of precipitation over just a single day, resulting in a lower humidity of 69%. For a more comprehensive look at February weather in the region, visit El Bajio weather in February.
September and March present quite contrasting weather patterns. In September, the temperature ranges from a minimum of 9°C (49°F) to a maximum of 29°C (84°F), with an average of 19°C (66°F). This month experiences notable rainfall, averaging 135 mm (5.3 in) over 15 days, accompanied by a high humidity level of 81%. In contrast, March showcases milder conditions, with temperatures fluctuating between a minimum of 4°C (40°F) and a maximum of 33°C (91°F), while the average settles at 18°C (65°F). Precipitation in March is minimal, totaling only 10 mm (0.4 in) across just two days, and the humidity is lower at 65%. For a deeper look into March weather, you can visit El Bajio weather in March.
Comparing the weather in September and April reveals distinct seasonal differences. In September, temperatures range from a cool 9°C (49°F) at their lowest to a warm 29°C (84°F) at their peak, with an average of 19°C (66°F). This month also experiences considerable precipitation, totaling 135 mm (5.3 in) over 15 days, accompanied by high humidity levels at 81%.
In contrast, April boasts milder conditions with minimum temperatures dropping to 5°C (41°F) and maximums reaching 33°C (91°F), averaging around 20°C (68°F). Notably, this month sees a much drier climate, with only 6 mm (0.2 in) of rainfall over just a single day, and humidity levels are considerably lower at 64%. For more detailed insights about April's weather, you can visit El Bajio weather in April.
In comparing the weather between September and May, we see notable differences in temperature and precipitation patterns. September typically has a milder temperature range with a minimum of 9°C (49°F) and a maximum of 29°C (84°F), while May enjoys warmer conditions, boasting a minimum of 8°C (46°F) and reaching up to 34°C (94°F). Precipitation is considerably higher in September, averaging 135 mm (5.3 in) over 15 days, compared to May's much drier climate, which sees only 30 mm (1.2 in) over just 5 days. Humidity levels are also higher in September at 81%, while May maintains a slightly lower humidity at 75%. For more detailed insights into May weather, you can explore El Bajio weather in May.
When comparing the weather in September and June, we notice some distinct differences. September experiences a cooler temperature range, with minimums dipping to 9°C (49°F) and average highs around 29°C (84°F), while June generally remains warmer, with temperatures ranging from 10°C (51°F) at night to a maximum of 34°C (94°F) during the day. Additionally, September sees higher precipitation levels, totaling 135 mm (5.3 in) across 15 days, compared to June's 116 mm (4.6 in) over 12 days. The humidity is also higher in September at 81%, making it feel a bit muggier compared to June's 78%. For more insights into June weather, you can visit El Bajio weather in June.
In comparing the weather between July and September, September tends to be slightly cooler with average temperatures ranging from 9°C (49°F) to a max of 29°C (84°F), whereas July showcases warmer averages, starting at a minimum of 12°C (53°F) and peaking at 31°C (88°F). Precipitation levels are similar in both months, with September receiving 135 mm (5.3 in) of rain over 15 days, while July has 137 mm (5.4 in) across 16 days. Additionally, September has a higher humidity level at 81%, compared to July's 67%. For more details about conditions during July, check out El Bajio weather in July.
In comparing the weather of September to that of August, September tends to be slightly cooler and more humid. The minimum temperatures drop to 9°C (49°F) in September from 11°C (52°F) in August, while the maximum temperature also decreases from 31°C (89°F) in August to 29°C (84°F) in September. Interestingly, September experiences significantly more precipitation, totaling 135 mm (5.3 in) over 15 days, compared to August's 79 mm (3.1 in) over just 11 days. This increased rainfall, coupled with higher humidity levels of 81% in September, contributes to a more humid atmosphere than the 64% recorded in August. For a deeper dive into August weather specifics, you can refer to El Bajio weather in August.
September and October exhibit distinct weather patterns. In September, temperatures range from a cooler minimum of 9°C (49°F) to a warmer average of 19°C (66°F) and a maximum of 29°C (84°F). This month also sees considerable rainfall, with 135 mm (5.3 in) of precipitation over 15 days, contributing to an overall humidity level of 81%. In contrast, October experiences slightly lower temperatures, with a minimum of 5°C (41°F) and an average of 18°C (64°F), while still reaching a maximum of 29°C (84°F). Rainfall decreases significantly to 48 mm (1.9 in) across 8 days, leading to a marginally higher humidity of 85%. For more detailed information, you can visit El Bajio weather in October.
September and November present contrasting weather patterns. In September, temperatures range from a cool minimum of 9°C (49°F) to a warm maximum of 29°C (84°F), with an average of 19°C (66°F). This month is also marked by significant rainfall, with 135 mm (5.3 in) of precipitation occurring over 15 days, and humidity sitting at a high 81%. In comparison, November brings cooler conditions, with a minimum temperature of 0°C (32°F) and an average of 15°C (60°F), while the maximum reaches 28°C (83°F). Notably, it experiences much less rainfall, only 14 mm (0.6 in) over 2 days, and slightly higher humidity at 87%. For more information, you can visit El Bajio weather in November.
In September, the weather is generally warmer, with average temperatures ranging from a mild 19°C (66°F) to a maximum of 29°C (84°F). This month also sees significant precipitation, with about 135 mm (5.3 in) of rain over 15 days, accompanied by a humidity level of 81%. In contrast, December brings a marked drop in temperature, with an average of 13°C (55°F) and lows that can dip down to -5°C (22°F). Rainfall is considerably less in December, totaling only 12 mm (0.5 in) and occurring on just 1 day. The humidity rises slightly to 87%, contributing to a cooler and drier atmosphere. For more details about the weather during this month, you can visit El Bajio weather in December.
As September unfolds in El Bajio, the transition to the fall season brings a blend of warm days and cool nights, making it distinct from the hotter summer months. Average temperatures hover around a comfortable 19°C, with peaks reaching up to 29°C, ensuring a delightful escape from the sweltering heat experienced earlier in the year. However, this month also marks the onset of increased rainfall, with approximately 135 mm of precipitation spread over 15 days, contributing to a noticeable rise in humidity, which sits at an average of 81%. This combination of warmth and moisture paints September as a vibrant, dynamic month, ripe with the freshness of new beginnings. For a deeper dive into the nuances of the region's climate, explore El Bajio Climate.