Last updated: April 22, 2025
September in San Miguel, Mexico offers a unique blend of warmth and moisture, with maximum temperatures reaching a pleasant 27°C (81°F) and an average of 18°C (65°F)*. This month is characterized by a notable minimum temperature of 9°C (48°F) during the cooler nights. A significant precipitation total of 227 mm (9.0 in) is recorded over approximately 22 days, resulting in a humidity level that averages around 85%. Visitors and locals alike can expect a refreshing but occasionally damp climate, making September a time of lush landscapes and vibrant life in this charming town.
In September, San Miguel de Allende experiences a delightful transition into the fall season, with temperatures ranging from a comfortable 9°C (48°F) at night to a pleasant 27°C (81°F) during the day. The average temperature holds steady at around 18°C (65°F), mirroring the mild conditions of August. As the summer heat begins to wane, locals and visitors alike enjoy the refreshing air, making it an ideal time for outdoor exploration. This moderate climate, combined with less humidity, often prompts a decrease in rainfall compared to the peak summer months, allowing for vibrant cultural festivities and breathtaking scenery to flourish. Overall, September offers a perfect blend of warmth and cool evenings, inviting all to soak in the charm of this picturesque city.
September in San Miguel, Mexico, marks a significant transition in the precipitation pattern, as the total rainfall reaches 227 mm (9.0 in) over 22 days. This trend follows the peak of the rainy season, where July and August deliver the heaviest downpours, with July showcasing an impressive 285 mm (11.2 in). As the month progresses, the rains begin to taper off, yet September still captures a substantial amount, maintaining the lush environment that freshly blooms during this time. The consistent wet days throughout the month hint at the lingering monsoon season, which gradually gives way to drier, cooler months ahead. Overall, September illustrates the tail end of an impressive hydrological cycle, setting the stage for a shift in the seasonal climate of San Miguel.
September marks a peak in humidity for San Miguel, Mexico, with levels soaring to 85%, matching the balmy heights of August. This trend reflects a gradual increase in moisture as the year progresses, notably from the year's lowest point of 54% in March. After a brief dip in April, humidity climbs consistently through the summer months, culminating in this late-summer high. As the rainy season approaches, the ambiance becomes noticeably more tropical, setting the stage for vibrant growth and lush landscapes. Following September, humidity begins to decline again, signaling the onset of autumn with a more comfortable atmosphere as October ushers in lower moisture levels at 79%.
In September, the UV Index in San Miguel, Mexico reaches a notable 14, placing it in the extreme exposure category with a rapid burn time of just 10 minutes. This month continues the trend of heightened UV levels observed throughout the summer, where indices have consistently hovered between 13 and 15 since April. As the days shorten and autumn approaches, the UV Index begins to taper off slightly in October, yet September remains a crucial month for sun safety. Visitors and residents alike should take precautions to protect their skin, especially during peak sunlight hours. For more detailed information, visit San Miguel UV Index.
UV Risk Categories
September in San Miguel, Mexico, offers a delightful balance of warmth and sunshine, featuring approximately 283 hours of sunlight. This month sees a slight dip from the vibrant peak of May, which boasts 335 hours, yet remains comfortably sunny compared to the earlier months of the year like January with only 238 hours. As summer transitions into autumn, September maintains a bright ambiance, just shy of the summer highs while surpassing the early months significantly. This gradual decrease in daylight hours signals the onset of fall, making it an ideal time for visitors to enjoy the city's charm under the mellow sun. Overall, September presents a perfect blend of light and warmth, a true gem in the yearly sunshine cycle.
As September rolls around in San Miguel, Mexico, the likelihood of sunny weather takes a noticeable dip, with only a 16% chance of sunshine. This marks a significant decline from the sun-soaked months of February and March, which boast delightful probabilities of 93% and 82%, respectively. The transition into fall sees a consistent downturn in sunny days, with June, July, and August all experiencing similarly low chances. While the sunny skies may be fleeting during this month, it's a reminder that the dry season is just around the corner, with October's chance of sun climbing to 30% and November shooting back up to 62%. So, while September may not shine as brightly, it paves the way for sunnier days ahead.
As September arrives in San Miguel, daylight continues its steady decline from the peak summer months, offering about 12 hours of daylight. This mirrors August's daylight duration, signaling a transition as the days gradually shorten after the sunniest months of May through July, which boast 13 hours. The early part of the year sees a consistent 11 hours of daylight in January and February, with a slow increase as spring unfolds. By the time September rolls around, it’s clear that the vibrant days of summer are giving way to cozy autumn evenings, hinting at the impending shorter days of fall and winter.
As September arrives in San Miguel, Mexico, the gentle whispers of the wind begin to paint a tranquil picture, averaging a mild 1.4 m/s (3 mph). This month's breeze mirrors the calmness of August, where the winds slightly dipped, reflecting a trend of reduced air movement during the summer months. Notably, the springtime months of January through April showcase a more spirited character, peaking at 2.1 m/s (5 mph) in both February and April. As autumn approaches, the wind takes on a softer temperament, transitioning into a cozy ambiance that envelops the quaint streets and vibrant landscapes of San Miguel. Such fluctuations in wind speed not only signal seasonal changes but also create an inviting atmosphere that welcomes both locals and travelers alike.
The weather in San Miguel 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 San Miguel and find detailed weather information for every month.
In comparing the weather of September and January, notable differences can be observed. September experiences a milder average temperature of 18°C (65°F), with highs reaching up to 27°C (81°F) and lows around 9°C (48°F). This month also sees considerable precipitation, with 227 mm (9.0 in) falling over 22 days, accompanied by high humidity levels at 85%. In contrast, January presents cooler temperatures, with an average of 14°C (57°F), a maximum of 28°C (83°F), and a minimum of just 1°C (35°F). Importantly, January is significantly drier, receiving only 11 mm (0.4 in) of rainfall over just 3 days, and the humidity is lower at 70%. For more detailed weather insights, you can check San Miguel weather in January.
The comparison between September and February weather reveals distinct seasonal characteristics. September experiences a broad temperature range with a minimum of 9°C (48°F) and a maximum of 27°C (81°F), along with high humidity levels reaching 85%. This month also sees significant rainfall, with precipitation totaling 227 mm (9.0 in) over 22 days, making it one of the wetter months. In contrast, February offers milder conditions, with temperatures ranging from a minimum of 4°C (39°F) to a maximum of 29°C (85°F) and much lower precipitation of just 12 mm (0.5 in) over 3 days. The humidity in February is also lower at 64%, contributing to a drier and more comfortable atmosphere. For more detailed insights, you can explore San Miguel weather in February.
In comparing the weather of September and March, we see distinct differences in temperature and precipitation levels. September experiences a broader temperature range with a minimum of 9°C (48°F) and a maximum of 27°C (81°F), while March has a lower minimum of 6°C (43°F) but reaches a warmer maximum of 31°C (88°F). Additionally, September is much wetter, with a significant 227 mm (9.0 in) of rain over 22 days, compared to March’s minimal 17 mm (0.7 in) over just 3 days. The humidity in September is notably higher at 85%, whereas March has a more comfortable 54%. For a more detailed understanding of March weather, you can visit San Miguel weather in March.
When comparing the weather in September and April, notable differences emerge. September tends to be cooler, with average temperatures ranging from a minimum of 9°C (48°F) to a maximum of 27°C (81°F), while April's warmth peaks significantly higher, with an average between 7°C (45°F) and 33°C (92°F). Additionally, September is characterized by much higher precipitation at 227 mm (9.0 in) over 22 days, in stark contrast to April's dry conditions, which only see 10 mm (0.4 in) of rain over just 2 days. Humidity levels also differ, with September's humidity sitting at 85%, while April is a more comfortable 61%. For more details on April weather, check out San Miguel weather in April.
September and May present contrasting weather conditions. In September, temperatures range from a cool 9°C (48°F) at night to a warm 27°C (81°F) during the day, with an average of 18°C (65°F). The month experiences significant rainfall, with 227 mm (9.0 in) of precipitation over 22 days and humidity levels soaring at 85%. In contrast, May enjoys milder weather, with temperatures starting at a similar minimum of 9°C (49°F) but reaching a higher maximum of 34°C (94°F) and an average of 21°C (70°F). Rainfall is scarce, totaling only 54 mm (2.1 in) over 11 days, and humidity is relatively lower at 75%. For more insights on May’s climate, you can refer to San Miguel weather in May.
In comparing the weather of September to June, September tends to be cooler with average temperatures ranging from a minimum of 9°C (48°F) to a maximum of 27°C (81°F), while June offers warmer conditions, with temperatures spanning from a minimum of 10°C (51°F) to a maximum of 34°C (93°F). Additionally, September experiences higher precipitation, averaging 227 mm (9.0 in) over 22 days, compared to June's 180 mm (7.1 in) over 18 days. Humidity levels are also relatively high in both months, with September at 85% and June at 83%, creating a humid atmosphere as the seasons transition. For a more detailed look at the weather specifics for June, check out San Miguel weather in June.
When comparing the weather between September and July, we observe a few notable differences. In September, the minimum temperature dips slightly to 9°C (48°F), while July maintains a warmer minimum of 11°C (52°F). Both months feature an average temperature of 18°C (65°F) and a maximum temperature that is quite similar, with September peaking at 27°C (81°F) and July at 28°C (82°F). Precipitation is significantly higher in July, with 285 mm (11.2 in) over 27 days compared to September's 227 mm (9.0 in) across 22 days. Humidity levels are relatively close, with September at 85% and July slightly lower at 83%. This information highlights the trend of wetter conditions in July compared to September. For more details, check out San Miguel weather in July.
In September, the weather remains similar to August, with average temperatures hovering around 18°C (65°F) and maximums reaching up to 27°C (81°F). However, September sees a drop in minimum temperatures to 9°C (48°F), compared to August's 11°C (52°F). Additionally, September experiences slightly less precipitation, with 227 mm (9.0 in) over 22 days, compared to August's 262 mm (10.3 in) over 25 days. Both months share a consistent humidity level of 85%. For a more detailed look at August's weather patterns, you can refer to San Miguel weather in August.
September and October exhibit notable shifts in weather patterns. September tends to be warmer, with average temperatures around 18°C (65°F) and a maximum of 27°C (81°F), while October offers slightly cooler conditions, with an average of 17°C (64°F) and highs reaching 29°C (84°F). Precipitation significantly decreases from 227 mm (9.0 in) in September, occurring over 22 days, to just 78 mm (3.1 in) over 14 days in October. Additionally, humidity levels drop from 85% in September to 79% in October, contributing to a more comfortable atmosphere. For more details, check out San Miguel weather in October.
September and November exhibit notable differences in weather patterns. In September, temperatures range from a minimum of 9°C (48°F) to a maximum of 27°C (81°F), with an average of 18°C (65°F). The month is characterized by significant precipitation, totaling 227 mm (9.0 in) over 22 days, contributing to a high humidity level of 85%. In contrast, November presents a cooler climate, with temperatures ranging from a minimum of 3°C (38°F) to a maximum of 29°C (84°F) and an average of 16°C (60°F). Rainfall is much lighter, with only 35 mm (1.4 in) spread over just 5 days, resulting in lower humidity at 76%. For more detailed information, visit San Miguel weather in November.
The weather in September is characterized by significantly warmer temperatures, with a minimum of 9°C (48°F) and an average of 18°C (65°F), peaking at 27°C (81°F). This month also sees high humidity levels at 85% and considerable precipitation, totaling 227 mm (9.0 in) over 22 days, making it quite damp. In contrast, December experiences much cooler weather, with a minimum of just 1°C (34°F) and an average of 14°C (57°F), while still reaching a maximum of 27°C (80°F). Precipitation drops dramatically to only 6 mm (0.3 in) over just 1 day, and humidity decreases to 74%. For more on December's weather, you can check out San Miguel weather in December.
As September unfolds in San Miguel, the weather shifts markedly from the warmer months, ushering in a cooler and more humid atmosphere. With average temperatures dipping to a comfortable 18°C and maximums peaking at 27°C, the month provides a refreshing respite from the heat. However, the significant 227 mm of rainfall over 22 days transforms the landscape, creating a lush and vibrant environment. This increased humidity, averaging around 85%, adds a tropical feel to the air, setting September apart from the drier and hotter summer months. To understand more about the overall conditions throughout the year, visit San Miguel Climate.