Last updated: April 22, 2025
September in Atotonilco, Mexico welcomes a blend of mild warmth and refreshing rainfall. With daytime temperatures reaching a maximum of 32°C (91°F) and averaging around 20°C (69°F), the weather is pleasantly inviting for outdoor activities. Nights cool off to a minimum of 12°C (53°F), perfect for cozy evenings. This month sees about 115 mm (4.5 in) of precipitation spread over 19 days, contributing to the region's lush landscape. With humidity levels hovering around 81%, the atmosphere feels vibrant and teeming with life, making September a unique experience in Atotonilco.
In September, Atotonilco, Mexico, experiences a pleasant shift towards milder temperatures, marking the transition into fall. With daily lows averaging 12°C (53°F) and highs reaching around 32°C (91°F), the climate remains generally comfortable, perfect for outdoor activities and exploration. The average temperature settles at 20°C (69°F), indicating a slight cool-down from the preceding summer months. As rainfall begins to increase, the humid air adds a refreshing dimension to the growing season, making September an inviting time to enjoy the vibrant landscapes and rich cultural offerings of this charming locale. Overall, the month strikes a balanced chord, combining warmth with a touch of crispness—a delightful prelude to autumn.
September marks a pivotal point in Atotonilco's annual precipitation cycle, delivering 115 mm (4.5 in) of rain over an average of 19 days. This significant uptick in rainfall follows the previous months of August and July, which also experience substantial precipitation, but September stands out as one of the wettest months of the year. The trend indicates a robust rainy season that peaks as summer transitions into fall, nurturing the lush landscapes of the region. With this pattern, residents and the environment alike prepare for the cooler, dryer months that follow, highlighted by a notable decline in rainfall come October.
In September, the air in Atotonilco, Mexico, becomes notably more humid, with levels rising to 81%. This spike marks a clear transition as the monsoon season approaches its peak, creating a stark contrast to the drier months of March and April, where humidity levels hovered around 58%. Following the relative dry spells of early spring and summer, September's humidity surge is part of a broader trend leading into the fall; both October and November see even higher levels of 83% and 84%, respectively. This gradual increase from summer through autumn results in a richly humid atmosphere, enveloping the region in a lush, vibrant ambiance, perfect for experiencing its natural beauty.
In September, Atotonilco experiences an extreme UV Index of 13, with a burn time of just 10 minutes. This follows a summer of consistently high UV levels, where from April to August, the index remained at 14—the peak of extreme exposure—highlighting the need for sun protection during these months. As the year transitions into October, we see a slight decline to a UV Index of 12, but caution is still advised. Overall, the month of September aligns with a pattern of high UV indices prevalent across the late spring and summer, marking it as a critical time for those enjoying the sun in Atotonilco. For more detailed information, check Atotonilco UV Index.
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September in Atotonilco, Mexico, offers a beautiful balance of sunshine, with 284 hours of daylight illuminating the vibrant landscapes as summer gradually transitions into fall. This month marks a gentle decline from the peak hours of 333 in May, reflecting the end of the sunniest season. Despite the drop, September still enjoys more sunlight than the months that follow, such as October and November, making it an ideal time for outdoor activities and immersing oneself in the stunning natural beauty of this enchanting locale. With summer's warmth lingering in the air, visitors can relish the golden rays while embracing the peacefulness of the approaching autumn.
In September, the likelihood of sunny weather in Atotonilco, Mexico, drops to a modest 23%, marking a significant dip from the sun-kissed months earlier in the year. This trend reflects the transition to the rainy season, which tends to dominate the late summer and early fall periods. As the peak months of June and July are characterized by an even lower 24% chance of sunshine, September typically offers a brief reprieve before conditions improve again in October, when the chances rise to 39%. Those planning a visit should be prepared for overcast skies and occasional showers, steering clear of expectations for consistent sunshine during this time.
In Atotonilco, Mexico, the rhythm of daylight undergoes a dynamic dance throughout the year. Following the long, sunlit days of summer, where June, July, and August bask in a generous 13 hours of sunlight, September sees a gentle shift, returning to 12 hours of daylight. This change marks a transition as daylight gradually decreases towards the cooler months. The trend then continues into October and November, which both offer 11 hours of light, leading into the shorter days of winter that descend to 10 hours in December. Overall, September strikes a harmonious balance, providing ample time to enjoy the tail end of summer before the gradual retreat of the sun begins.
In Atotonilco, Mexico, the winds of September subtly drift at an average speed of 1.8 m/s (4 mph), marking a gentle decline from the more spirited breezes of late summer. Throughout the year, wind speeds experience a gradual rise from 1.9 m/s in January to a peak of 2.6 m/s in August, suggesting a trend toward more invigorating gusts during the warmer months. However, as the transition to autumn begins, September’s winds calm down, aligning with the consistent patterns observed in October, November, and December—each maintaining that soft 1.8 m/s pace. This delicate ebb and flow of winds not only reflects changing seasons but also enhances the serene charm of Atotonilco as it prepares for the cooler months ahead.
The weather in Atotonilco 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 Atotonilco and find detailed weather information for every month.
In September, the weather is significantly warmer and more humid, with average temperatures ranging from 12°C (53°F) to a high of 32°C (91°F) and a notable humidity level of 81%. The month experiences considerable rainfall, with 115 mm (4.5 in) over 19 days, making it one of the wetter months of the year. In contrast, January brings cooler temperatures, where the average ranges from a low of 2°C (36°F) to a high of 30°C (86°F). This month is much drier, with only 14 mm (0.5 in) of precipitation spread over just 3 days, and a lower humidity level at 74%. For more detailed information on January weather, you can visit Atotonilco weather in January.
September and February showcase contrasting weather patterns. In September, temperatures range from a cool 12°C (53°F) at night to a warm average of 20°C (69°F) and peak at a sweltering 32°C (91°F) during the day. This month is also characterized by significant rainfall, with up to 115 mm (4.5 in) over 19 days and high humidity levels of 81%. In contrast, February brings a much chillier start with minimum temperatures dropping to 1°C (34°F) but averages around a milder 16°C (61°F) and can even reach up to 34°C (94°F). Notably, February is much drier, receiving only 16 mm (0.6 in) of rain over just 5 days, alongside lower humidity at 65%. For a closer look at what to expect during this month, check out Atotonilco weather in February.
Comparing the weather in September and March reveals notable differences in temperature and precipitation patterns. In September, the temperature ranges from a minimum of 12°C (53°F) to a maximum of 32°C (91°F), with an average of 20°C (69°F). This month also experiences significant rainfall, with a total of 115 mm (4.5 in) spread over 19 days, leading to a high humidity level of 81%. In contrast, March features a wider temperature range, with a minimum of 2°C (35°F) and a maximum of 35°C (95°F), averaging 18°C (65°F). However, it is much drier, receiving only 20 mm (0.8 in) of precipitation over just 5 days and maintaining a humidity level of 58%. For more details on the weather in March, you can visit Atotonilco weather in March.
When comparing the weather in September and April, notable differences emerge. September features a range of temperatures from a minimum of 12°C (53°F) to a maximum of 32°C (91°F), while April showcases a wider temperature span, with lows of 8°C (47°F) and peaks reaching up to 37°C (98°F). Additionally, September experiences significantly higher precipitation levels at 115 mm (4.5 in) over 19 days, contributing to a humidity level of 81%. In contrast, April is much drier with only 23 mm (0.9 in) of rain over 6 days, resulting in a much lower humidity of 58%. For more detailed insights about April weather, visit Atotonilco weather in April.
In comparing the weather between September and May, September tends to be cooler, with average temperatures ranging between 12°C (53°F) and 32°C (91°F), while May sees a warmer average ranging from 10°C (50°F) to a maximum of 36°C (98°F). Although both months experience rainfall, September is significantly wetter, with 115 mm (4.5 in) of precipitation over 19 days compared to May's 62 mm (2.4 in) over 13 days. Moreover, September has a higher humidity level at 81%, making it feel more muggy, while May enjoys a lower humidity of 67%. For those interested in more detailed weather patterns, you can check out Atotonilco weather in May.
When comparing the weather in September and June, we observe some interesting differences. September features a minimum temperature of 12°C (53°F) and a maximum of 32°C (91°F), with an average temperature of 20°C (69°F). In contrast, June tends to be slightly warmer, with temperatures ranging from a minimum of 13°C (56°F) to a maximum of 35°C (96°F) and an average of 22°C (71°F).
Precipitation levels are also noteworthy; September receives about 115 mm (4.5 in) of rain over 19 days, while June has a slightly higher rainfall of 123 mm (4.9 in) over 17 days. In terms of humidity, September is more humid at 81%, compared to June's 76%. For a deeper look into June weather specifics, visit Atotonilco weather in June.
When comparing the weather in September and July, we find that both months exhibit similar maximum temperatures, peaking at 32°C (91°F) in September and 32°C (90°F) in July. However, September tends to be slightly cooler on average, with a temperature of 20°C (69°F), compared to July's 21°C (70°F). Additionally, September experiences higher precipitation, with 115 mm (4.5 in) over 19 days, compared to July's 97 mm (3.8 in) over 16 days. This increased rainfall in September also contributes to a noticeable rise in humidity, reaching 81%, compared to July's lower humidity level of 67%. For more specific weather details in July, you can check Atotonilco weather in July.
In comparing the weather conditions of September and August, September tends to be slightly cooler with a minimum temperature of 12°C (53°F) and an average of 20°C (69°F), while August sees a warmer minimum of 14°C (57°F) and an average of 21°C (70°F). Additionally, September experiences more rainfall, totaling 115 mm (4.5 in) over 19 days, compared to August's 71 mm (2.8 in) over 15 days, leading to a noticeable increase in humidity during September at 81%, compared to August’s 68%. This shift indicates that September can feel more muggy and wet, contrasting with the relatively drier and somewhat warmer conditions of August. For more specific details about August weather, you can refer to Atotonilco weather in August.
September and October showcase a noticeable shift in weather patterns. In September, temperatures range from a minimum of 12°C (53°F) to a maximum of 32°C (91°F), with an average of 20°C (69°F). The month brings substantial rainfall, accumulating 115 mm (4.5 in) over 19 days, and a humidity level of 81%. By contrast, October has cooler temperatures, dipping to a minimum of 6°C (42°F) and averaging at 18°C (65°F), with a peak of 30°C (86°F). Precipitation decreases slightly to 107 mm (4.2 in) over 15 days, while humidity experiences a slight increase to 83%. For more detailed information, you can check Atotonilco weather in October.
September and November exhibit contrasting weather patterns, showcasing the transition from summer to late autumn. In September, temperatures range from a mild 12°C (53°F) at night to a warm 32°C (91°F) during the day, with an average of 20°C (69°F). The month is characterized by high humidity at 81% and significant rainfall, totaling 115 mm (4.5 in) across 19 days. In comparison, November features much cooler nights, with temperatures dipping to -1°C (31°F) while still reaching a pleasant maximum of 30°C (87°F) and an average of 16°C (60°F). Additionally, rainfall is minimal, with only 28 mm (1.1 in) over just 5 days, and humidity is slightly higher at 84%. For more detailed insights about November weather, visit Atotonilco weather in November.
September weather is characterized by warm temperatures, with a minimum of 12°C (53°F) and a maximum of 32°C (91°F), averaging around 20°C (69°F). The month sees considerable precipitation, totaling 115 mm (4.5 in) over 19 days, while maintaining high humidity levels at 81%. In contrast, December brings a notable shift as temperatures drop, with a minimum of -1°C (31°F) and a maximum of 29°C (84°F), averaging 14°C (57°F). Rainfall is significantly lower in December, with just 10 mm (0.4 in) over only 2 days, yet humidity remains constant at 81%. For more detailed information, you can explore Atotonilco weather in December.
September in Atotonilco showcases a noticeable shift in weather patterns as the region ushers in a blend of warmth and moisture. With average temperatures dipping slightly compared to the scorching summer months, the air feels refreshingly mild, yet humidity levels remain high, creating a lush atmosphere. Rainfall becomes more frequent, with nearly two-thirds of the month experiencing precipitation, setting September apart from its drier counterparts. This combination of warmth and increased rainfall not only enriches the landscape but also enhances the overall climate experience. For a deeper dive into what to expect year-round, check out the full details at Atotonilco Climate.