Last updated: April 22, 2025
September in San Miguel, Mexico brings a delightful yet humid atmosphere, with temperatures typically ranging from a pleasant 11°C (52°F) at night to a warm 28°C (82°F) during the day. The average temperature hovers around 18°C (65°F), making it a comfortable month for visitors. However, be prepared for a fair amount of rainfall, as the area experiences 236 mm (9.3 in) of precipitation over 22 days, contributing to the lush scenery of this charming town. With humidity levels at 85%, it's advisable to pack light, breathable clothing and stay hydrated while exploring the vibrant culture and breathtaking landscapes.
In September, San Miguel, Mexico, experiences a gentle transition as summer gradually gives way to autumn. The temperatures during this month showcase a minimum of 11°C (52°F), with an average hovering around a comfortable 18°C (65°F), and highs peaking at 28°C (82°F). This slight dip from the sizzling summer months illustrates the region's characteristic mild climate, making September an inviting time for visitors. While it's still warm enough to enjoy outdoor activities, the slightly cooler evenings offer a refreshing respite, perfect for cozying up under the stars. The month marks a delightful balance, blending the best of both worlds as nature prepares for the change of the seasons.
In September, San Miguel experiences a significant transition into the wet season, with a notable precipitation total of 236 mm (9.3 in) over approximately 22 rainy days. This marked increase follows the previous months, particularly in August, which recorded 240 mm (9.4 in) of rain. The trend reveals a peak in rainfall from June through September, with July boasting the highest amounts at 260 mm (10.2 in). This consistent pattern of intense rainfall leading into September highlights the region's lush landscape transformation during this time. Following September, precipitation begins to taper off, setting the stage for dryer months ahead.
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, San Miguel, Mexico, experiences a UV Index of 14, categorizing it as extreme and demanding careful sun protection with a burn time of just 10 minutes. This month continues the trend established earlier in the year, where high to extreme UV levels dominate from February through October, prompting vigilance for skin safety. It's notable that UV exposure peaks in April with a 15 rating, before settling slightly lower in the following months. As the seasons transition, October shows a modest decline to 12, but the intensity remains significant. Visitors and residents alike should stay informed about the UV Index to enjoy the beautiful weather while safeguarding their skin. For more details, check the San Miguel UV Index.
UV Risk Categories
September in San Miguel, Mexico, continues the trend of abundant sunshine, boasting 286 hours of bright skies. As summer transitions to autumn, the sunshine hours slightly dip from the peak of 336 hours in May, but remain favorable compared to other months. This month captures the essence of a sun-soaked experience, nestled between the 310 hours of July and the 293 hours of October. The gradual decrease in sunlight, while significant enough to be felt, still guarantees plenty of warm days filled with golden rays, making September an ideal time for outdoor adventures and cultural festivities in this vibrant city.
In San Miguel, Mexico, the likelihood of sunny weather takes a noticeable dip in September, with only an 18% chance of clear skies. After enjoying the bright days of February (92%) and March (81%), and experiencing a gradual decline leading into the summer months, September marks one of the year's most overcast periods. This trend continues into October (37%), where the sun begins to make a more frequent appearance again, suggesting that while September might lack sunny splendor, the promise of clearer days is just around the corner.
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.
In San Miguel during September, the average wind speed hovers around 1.3 m/s (3 mph), marking it as one of the calmer months of the year. This slight decline from the summer months reflects an overall trend of gradual decreases in wind intensity as the year progresses toward the fall. With wind speeds peaking in the spring months, particularly in February at 2.0 m/s (5 mph), the transition to September's gentle breezes offers a serene atmosphere, perfect for enjoying the town's vibrant culture. As the year unfolds, the breezy whispers of September charm visitors, creating an ideal setting for leisurely afternoon strolls under the warm Mexican sun.
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.
September and January present quite contrasting weather conditions. In September, temperatures range from a minimum of 11°C (52°F) to a maximum of 28°C (82°F), with an average of 18°C (65°F). The month is characterized by high humidity at 85% and frequent rainfall, totaling 236 mm (9.3 in) spread over 22 days. In stark contrast, January sees much cooler temperatures, with a minimum of 2°C (37°F), an average of 15°C (58°F), and a maximum of 29°C (84°F). Additionally, January experiences far less precipitation, with only 8 mm (0.3 in) over just 2 days and lower humidity at 70%. For more details about January weather, you can visit San Miguel weather in January.
September and February present contrasting weather patterns. In September, temperatures range from a cool 11°C (52°F) to a warm 28°C (82°F), with an average of 18°C (65°F). This month is characterized by significant rainfall, receiving about 236 mm (9.3 in) of precipitation over 22 days, coupled with high humidity at 85%. In contrast, February boasts a milder temperature spectrum, with minimums of 4°C (39°F) and maximums reaching 30°C (86°F), averaging around 16°C (62°F). Rainfall is minimal in February, totaling just 13 mm (0.5 in) across 3 days, and humidity drops to a more comfortable 64%. For more details on February weather, you can check San Miguel weather in February.
When comparing the weather in September and March, we observe notable differences. September's temperatures range from a minimum of 11°C (52°F) to a maximum of 28°C (82°F), with an average of 18°C (65°F). This month also experiences high humidity at 85% and significant rainfall, receiving 236 mm (9.3 in) over 22 days. In contrast, March is generally warmer, with temperatures ranging from a minimum of 7°C (44°F) to a maximum of 32°C (90°F), and an average of 19°C (66°F). Rainfall in March is minimal, totaling only 13 mm (0.5 in) over just 2 days, and the humidity drops to a more comfortable 54%. For more detailed insights, you can check San Miguel weather in March.
When comparing the weather in September and April, significant differences become clear. September experiences cooler temperatures, with an average of 18°C (65°F) and maximums reaching 28°C (82°F), contrasting sharply with April's warmer average of 21°C (69°F) and maximums soaring to 33°C (92°F). While September is notably wetter, with 236 mm (9.3 in) of rain over 22 days and high humidity at 85%, April boasts a much drier climate, receiving only 5 mm (0.2 in) of rain across just 1 day and lower humidity at 61%. For more details, you can check San Miguel weather in April.
Comparing the weather in September and May reveals significant differences in temperature and precipitation. In September, temperatures range from a minimum of 11°C (52°F) to a maximum of 28°C (82°F), with an average of 18°C (65°F), accompanied by a high level of humidity at 85%. This month also sees considerable rainfall, with 236 mm (9.3 in) spread over 22 days. In contrast, May boasts warmer conditions, with temperatures ranging from 10°C (50°F) to a scorching 35°C (95°F), and an average of 22°C (72°F). Notably, May experiences much less rain, totaling only 41 mm (1.6 in) over just 7 days, and lower humidity at 75%. For more detailed information, you can check out San Miguel weather in May.
In comparing the weather of September and June, we see notable differences in temperature and precipitation. September experiences a cooler range, with minimum temperatures around 11°C (52°F) and maximums peaking at 28°C (82°F), while June is warmer, with temperatures ranging from 12°C (53°F) to a high of 34°C (94°F). Additionally, September is much wetter, receiving 236 mm (9.3 in) of precipitation over 22 days, compared to June's 178 mm (7.0 in) over 18 days. Humidity levels are relatively similar, with September at 85% and June at 83%. For those wanting a deeper dive into June weather specifics, check out San Miguel weather in June.
When comparing the weather in September and July, both months experience warm temperatures with similar maximum highs around 28°C (82°F). However, September tends to be slightly cooler on average, with a mean temperature of 18°C (65°F) compared to July's 19°C (66°F). July also has a marginally higher minimum temperature of 12°C (53°F) versus September's 11°C (52°F). In terms of precipitation, July is slightly wetter, receiving 260 mm (10.2 in) over 26 days, while September sees 236 mm (9.3 in) spread across 22 days. Despite the higher rainfall in July, both months maintain high humidity levels, around 83-85%. For more detailed insights, check out San Miguel weather in July.
September sees slightly cooler temperatures compared to August, with average lows of 11°C (52°F) compared to August's 12°C (53°F). Both months experience similar maximum temperatures, peaking at 28°C (82°F), but September also brings a bit more rainfall, totaling 236 mm (9.3 in) over 22 days, while August has 240 mm (9.4 in) spread out over 25 days. The humidity remains constant at 85% for both months, offering a consistently humid atmosphere. For a detailed look at August weather, visit San Miguel weather in August.
September and October present notable shifts in weather patterns. In September, temperatures range from a minimum of 11°C (52°F) to a maximum of 28°C (82°F), with an average of 18°C (65°F). However, this month is quite wet, featuring significant precipitation of 236 mm (9.3 in) over 22 days and high humidity levels at 85%. In contrast, October sees a slight drop in minimum temperature to 7°C (45°F), while the maximum rises slightly to 29°C (84°F), maintaining a similar average of 18°C (64°F). Precipitation decreases significantly to 111 mm (4.4 in) over 12 days, and humidity levels also lower to 79%. For more details, check out San Miguel weather in October.
In comparing the weather of September and November, significant differences emerge. September features a wide temperature range, with a minimum of 11°C (52°F), averaging 18°C (65°F), and peaking at 28°C (82°F). This month experiences high humidity at 85% and substantial rainfall, accumulating 236 mm (9.3 in) over 22 days. In contrast, November presents a cooler climate, with temperatures dropping to a minimum of 4°C (39°F) and averaging 16°C (61°F), although it can reach a high of 29°C (85°F). Significantly, November sees much less precipitation, totaling just 31 mm (1.2 in) across only 4 days and lower humidity levels at 76%. For more detailed insights, you can explore San Miguel weather in November.
In September, the weather is significantly warmer and wetter, with temperatures ranging from a minimum of 11°C (52°F) to a maximum of 28°C (82°F) and an average of 18°C (65°F). The month experiences considerable rainfall, totaling 236 mm (9.3 in) over 22 days, along with a high humidity level of 85%. In contrast, December brings much cooler temperatures, with a minimum of 1°C (34°F) and an average of 14°C (58°F), peaking at a milder 26°C (80°F). This month sees minimal precipitation, averaging only 7 mm (0.3 in) on just 1 day, and a lower humidity level of 74%. For a detailed look at December's weather, you can visit San Miguel weather in December.
September in San Miguel brings a unique blend of warmth and humidity, setting it apart from the drier months that precede it. The temperatures are pleasantly mild, often hovering around a comfortable average, but the frequent rainfall—over two-thirds of the month seeing precipitation—creates a lush, vibrant atmosphere. With humidity levels reaching 85%, the air feels heavy yet refreshing, making September a time of transformation as the landscape flourishes. For more insights into how the weather shapes this beautiful region, visit San Miguel Climate.