September Weather in Saltillo, Mexico

Last updated: April 22, 2025

Experience the varying climate of Saltillo, Mexico in September, where maximum temperatures can reach a warm 31°C (88°F), while the average hovers around a comfortable 20°C (68°F). The month is characterized by an occasional cool breeze, with minimum temperatures dropping to 11°C (52°F) during the night. September also brings considerable precipitation, totaling 133 mm (5.2 in) over 17 days, contributing to a humidity level of 72% that enhances the lush atmosphere. This blend of warmth and moisture creates a unique environment, perfect for experiencing the natural beauty of the region.

September Temperature in Saltillo

In September, Saltillo, Mexico, begins to transition into the softer embrace of autumn, with temperatures reflecting this shift. The minimum temperature hovers around 11°C (52°F), offering a refreshing contrast to the summer heat, while the average settles at a comfortable 20°C (68°F). Daytime peaks can reach a pleasant 31°C (88°F), allowing for warm afternoons that are perfect for outdoor activities. This month marks a gradual decline in the intense summer warmth of the previous months, as July and August maintain highs of around 32°C (90°F). As autumn approaches, September serves as a delightful bridge between the sweltering summer and the cooler months ahead, making it an ideal time to explore the city's cultural offerings and natural beauty.

September Weather in Saltillo: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Saltillo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec525863687373717168645954
Data source: Temperature data for Saltillo generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Saltillo

In September, Saltillo experiences a significant uptick in precipitation, with 133 mm (5.2 inches) of rain falling over 17 days, making it the wettest month of the year. This surge in rainfall marks a stark contrast to the drier early months, where January through April collectively see a mere 73 mm (2.9 inches). As the summer months transition into autumn, September’s rainfall is primarily driven by seasonal storms, highlighting the region’s distinct shift from the dry heat of July and August to the wetter, more humid conditions typical of fall. This trend underscores the importance of September as a critical month for replenishing water resources in the area.

September Precipitation Trends in Saltillo

The chart displays monthly precipitation patterns in Saltillo, 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.
JanFebMarAprMayJunJulAugSepOctNovDec16172218355811868133351121
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Saltillo

In September, Saltillo, Mexico, experiences an average humidity of 72%, marking a slight uptick from the summer months. As the year progresses, humidity tends to peak in the late fall and winter, with November at 81% and December close behind at 80%. Notably, this transition from the dry heat of summer—evident with the lowest humidity recorded in July (57%)—to the more humid conditions of fall showcases the city's shifting climate patterns. The early fall months, particularly August and September, are characterized by a gentle rise in moisture levels, offering a refreshing contrast to the drier preceding months, while hinting at the dampness that winter will bring.

September Average Humidity in Saltillo

This chart illustrates the average monthly humidity levels in Saltillo, 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.
JanFebMarAprMayJunJulAugSepOctNovDec75%70%65%59%66%71%57%58%73%76%81%80%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Saltillo

As summer fades into September in Saltillo, Mexico, the UV Index remains impressively high at 12, categorizing exposure as extreme with a burn time of just 10 minutes. This trend of extreme UV levels, consistent since March, underscores the importance of sun protection throughout the year. Despite a slight dip from August's peak at 13, September still demands vigilant precautions to shield against harmful rays. As the sun shines fiercely into autumn, residents and visitors alike should stay informed about the local UV conditions to enjoy the outdoors safely. For more detailed insights, visit Saltillo UV Index.

Maximum UV Index Levels in Saltillo for September

The chart shows the monthly maximum UV Index (UVI) for Saltillo 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.
JanFebMarAprMayJunJulAugSepOctNovDec79121313131313121187
Data source: Saltillo 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 Saltillo

In Saltillo, Mexico, September often serves as a radiant transition between the sizzling summer months and the cooler autumn days. Boasting 289 hours of sunshine, this month may not reach the peak brightness seen in the height of summer, but it still offers plenty of delightful days under the sun. The trend of sunlight in Saltillo shows a steady increase from January’s 218 hours to a summer climax in June with 347 hours. As the year progresses into autumn, there’s a slight decline, yet September's ample sunshine ensures that residents and visitors alike can enjoy the pleasant warmth and vibrant outdoor activities before the cooler months set in. Each sunny hour further cements Saltillo's status as a wonderful destination for sun-seekers even as the earth prepares for its seasonal slumber.

Monthly Sunshine Duration in Saltillo: September Highlighted

The September sunshine duration represents the total number of hours Saltillo 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.
JanFebMarAprMayJunJulAugSepOctNovDec218h263h306h318h344h347h340h342h289h297h276h270h
Data source: Saltillo September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Saltillo During September

In Saltillo, Mexico, September offers a 59% chance of sunny weather, showcasing a transition into the season of milder temperatures and clearer skies. This month mirrors the sunlit potential seen earlier in the year, with percentages similar to June and August, which dip to 59% and 54%, respectively. Interestingly, as summer wanes, the likelihood of sunshine begins to pick up again in October at 61%, hinting at a promising return to brighter days. Overall, September remains a fairly bright month, aligning with Saltillo's generally sunny disposition throughout the year.

Percentage of Sunny Days in September in Saltillo

The chart illustrates the percentage of sunny days in Saltillo 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 Saltillo experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec64%69%66%67%69%59%44%54%59%61%65%56%
Data source: Saltillo September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Saltillo in September

As September rolls into Saltillo, Mexico, the city enjoys a comfortable 12 hours of daylight, mirroring the length experienced in both March and April. This marks a gentle transition from the summer months where daylight peaked at 13 hours in May through August. Following the vibrancy of longer summer days, September's daylight duration hints at the impending autumn, as it gradually tapers off to 11 hours in October. The overall trend reflects a rhythmic shift with the seasons, seamlessly blending longer days of summer with the cozy embrace of fall, inviting residents and visitors alike to savor the warm hues of early autumn.

Average Daylight Hours in Saltillo for September

The chart illustrates the variation in daylight duration in Saltillo throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 44m11h 17m12h 1m12h 46m13h 23m13h 41m13h 31m12h 58m12h 15m11h 31m10h 52m10h 33m
Data source: Saltillo daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Saltillo

In Saltillo, Mexico, September brings a gentle breeze, with average wind speeds around 2.3 m/s (5 mph). This slight decrease from the spring months reflects a trend of stabilizing winds as summer fades. Throughout the year, wind speeds in Saltillo show a gradual rise leading into late spring, peaking in April at 2.9 m/s (6 mph), before tapering off as the monsoon season approaches. This predictable ebb and flow creates a serene atmosphere in September, allowing residents to enjoy the mild transition into autumn's embrace, characterized by cooler temperatures and soft winds that whisper through the city's historic streets.

Average September Wind Speed in Saltillo

The chart displays monthly wind speed patterns in Saltillo, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.42.32.72.92.72.62.02.22.3 m/s2.22.12.2
Data source: Saltillo September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Saltillo Compares to Other Months

The weather in Saltillo 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 Saltillo and find detailed weather information for every month.

September and January present stark contrasts in weather conditions. In September, temperatures range from a minimum of 11°C (52°F) to a maximum of 31°C (88°F), with an average temperature of 20°C (68°F). This month is characterized by substantial precipitation, totaling 133 mm (5.2 in) over about 17 days, accompanied by a humidity level of 72%. In contrast, January experiences much colder temperatures, with a minimum of -2°C (29°F) and a maximum of 27°C (81°F), leading to an average of 11°C (53°F). Notably, January is much drier, receiving only 16 mm (0.6 in) of precipitation over just 2 days, while humidity remains relatively high at 75%. For further details, check out Saltillo weather in January.

In contrasting September and February weather, we see significant differences in temperatures and precipitation. September typically enjoys milder temperatures, ranging from a minimum of 11°C (52°F) to a maximum of 31°C (88°F), with an average of 20°C (68°F). However, it also experiences substantial rainfall, with 133 mm (5.2 in) of precipitation over 17 days, resulting in a humidity level of 72%. In stark contrast, February brings colder temperatures, with a minimum of -3°C (27°F) and a maximum of 33°C (92°F), while averaging 14°C (58°F). The month is much drier, with just 17 mm (0.7 in) of precipitation over only 3 days, and a slightly lower humidity of 70%. For more detailed insights into this month's climate, check out Saltillo weather in February.

In comparing the weather between September and March, September presents a more humid and wet experience, with temperatures ranging from a minimum of 11°C (52°F) to a warm maximum of 31°C (88°F) and average rainfall of 133 mm (5.2 in) over 17 days. In contrast, March features cooler temperatures, with a minimum of 1°C (34°F) and a maximum of 35°C (95°F) and significantly lower precipitation of just 22 mm (0.8 in) over 4 days. Additionally, March tends to be less humid, averaging around 65%. For more details, you can check Saltillo weather in March.

When comparing the weather in September and April, we notice distinct differences in temperature and precipitation. September features a broader temperature range, with minimums around 11°C (52°F) and maximums reaching up to 31°C (88°F), while April experiences cooler lows of 5°C (41°F) but can soar to 35°C (95°F) at its highest. Interestingly, both months share an average temperature of 20°C (68°F), creating a comfortable feel overall. However, September is much wetter, receiving 133 mm (5.2 in) of precipitation over 17 days, in contrast to April's minimal 18 mm (0.7 in) across just 4 days. Additionally, September has a higher humidity level of 72%, compared to April's 59%. For more details on April weather, you can check this link: Saltillo weather in April.

In comparing the weather between September and May, we see notable differences in temperature and precipitation. September experiences a broader temperature range, with minimums around 11°C (52°F) and maximums soaring to 31°C (88°F), whereas May boasts slightly warmer averages, with a minimum of 9°C (48°F) and maximum reaching up to 36°C (97°F). Additionally, September is marked by higher humidity at 72% and significantly more rainfall, totaling 133 mm (5.2 in) over about 17 days. In contrast, May has a much drier climate, with only 35 mm (1.4 in) of precipitation over 9 days and a lower humidity level of 66%. For a deeper look into May's climate specifics, check out Saltillo weather in May.

In comparing the weather of September and June, September tends to be cooler with average temperatures around 20°C (68°F), while June is warmer, averaging 23°C (73°F). June also sees higher maximum temperatures, peaking at 35°C (94°F), compared to 31°C (88°F) in September. However, September experiences significantly more rainfall, with 133 mm (5.2 in) over 17 days, whereas June has only 58 mm (2.3 in) across 9 days. Humidity levels are similar in both months, hovering around 71-72%. For more detailed information, you can explore Saltillo weather in June.

When comparing the weather in September and July, we see some notable differences. September typically experiences a slightly cooler temperature range with a minimum of 11°C (52°F) and an average of 20°C (68°F), while July tends to be warmer, with a minimum of 14°C (57°F) and an average of 22°C (71°F). Both months have relatively similar maximum temperatures, with July reaching up to 32°C (90°F) and September peaking at 31°C (88°F). However, September faces more precipitation, averaging 133 mm (5.2 in) over 17 days, compared to July's 118 mm (4.6 in) over 20 days. Moreover, the humidity is higher in September at 72%, compared to July's 57%. For more detailed information on the July climate, you can check Saltillo weather in July.

In comparing the weather between August and September, we see a notable shift. September experiences slightly cooler temperatures, with a minimum of 11°C (52°F) and an average of 20°C (68°F), compared to August's minimum of 13°C (56°F) and average of 22°C (72°F). Additionally, September is marked by increased precipitation, receiving 133 mm (5.2 in) over 17 days, while August sees significantly less with 68 mm (2.7 in) over 13 days. Humidity also rises in September to 72%, compared to the 58% humidity typical of August. For a detailed look at August weather, you can visit Saltillo weather in August.

September and October exhibit notable differences in weather patterns. September generally experiences warmer temperatures, with a range from a minimum of 11°C (52°F) to a maximum of 31°C (88°F), while October sees cooler temperatures, falling to a minimum of 4°C (40°F) and averaging around 18°C (65°F). Additionally, September is much wetter, with 133 mm (5.2 in) of precipitation over 17 days compared to October's 35 mm (1.4 in) over just 8 days. Humidity levels are relatively similar, with September at 72% and October slightly higher at 76%. For a detailed look at the climate specifics in October, check out Saltillo weather in October.

September and November exhibit distinct weather patterns. In September, temperatures range from a minimum of 11°C (52°F) to a maximum of 31°C (88°F), with an average of 20°C (68°F). The month is characterized by significant precipitation, totaling 133 mm (5.2 in) over 17 days, and a humidity level of 72%. In contrast, November brings cooler temperatures, with a minimum of -4°C (25°F) and an average temperature of 15°C (59°F), peaking at a maximum of 29°C (85°F). Rain is sparse, with only 11 mm (0.4 in) falling over just 2 days, while humidity increases slightly to 81%. For more details on November weather, check out Saltillo weather in November.

September weather in Saltillo features a warmer climate with average temperatures around 20°C (68°F) and highs reaching up to 31°C (88°F), accompanied by significant precipitation of 133 mm (5.2 in) over 17 days. This month experiences a humidity level of 72%, contributing to a slightly muggy feel. In contrast, December brings a much cooler atmosphere, with average temperatures dropping to 12°C (55°F) and nighttime lows plummeting to -7°C (20°F). Precipitation is minimal at 21 mm (0.8 in) across just 3 days, although humidity increases to 80%. For a detailed overview of the December weather in Saltillo, check out Saltillo weather in December.

Compare Saltillo's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Saltillo

As September rolls into Saltillo, the weather transforms dramatically, ushering in a season marked by increased humidity and frequent rainfall. Unlike the hotter summer months, September offers a cooler average temperature, making it a more comfortable time for outdoor activities. However, the region experiences notable precipitation, with many days graced by rain, creating a lush landscape that contrasts sharply with the dry conditions of preceding months. The balance of warmth and moisture in the air during this month provides a unique experience for residents and visitors alike. For more insights on how the seasons affect Saltillo's charm, check out Saltillo Climate.