Last updated: April 22, 2025
September in Tlalpan, Mexico brings a blend of mild temperatures and considerable rainfall, making it a month of transition. With maximum temperatures reaching 23°C (74°F) and an average hovering around 14°C (58°F), the days are generally pleasant, though cooler nights dip to a minimum of 5°C (41°F). This month is particularly notable for its high humidity levels, averaging 82%, combined with significant rainfall amounting to 236 mm (9.3 in) over approximately 25 days. Thus, September presents a unique opportunity to experience Tlalpan's lush, vibrant landscapes nourished by the frequent showers.
In September, Tlalpan experiences a pleasant balance in temperatures, with minimums hovering around 5°C (41°F) and a stable average of 14°C (58°F). Daytime highs reach a comfortable 23°C (74°F), making this month ideal for outdoor activities and exploring the region's natural beauty. Compared to the preceding months, there's a slight drop in average temperature from the summer, yet September retains a moderate climate, echoing the mild weather typical of early fall. This gradual transition signals a shift away from the heat of summer while maintaining enough warmth to enjoy Tlalpan's vibrant landscapes.
September in Tlalpan, Mexico, marks a significant peak in precipitation, with an impressive 236 mm (9.3 in) of rainfall spread over 25 days. This highlights the continuation of the rainy season, where moisture accumulates from the summer months, just after the heavy downpours of July and August, which recorded 267 mm and 265 mm respectively. As the year transitions into fall, September retains substantial rainfall but shows a slight decrease, signaling a gradual decline in precipitation leading into October. This pattern underscores the shift from intense summer storms to a more moderate, yet still substantial, rainfall regime, as Tlalpan prepares for the dryer months ahead.
In September, Tlalpan, Mexico, experiences a noticeable increase in humidity, reaching 82%. This spike follows a trend of gradual fluctuations throughout the year, with the humidity levels peaking in the colder months. After a slight dip in July and August, where humidity dipped to 68% and 70% respectively, September signals the onset of a more humid climate as it transitions towards the rainier season. The month acts as a precursor to October’s much higher humidity level of 91%, indicating a return to lush, moisture-laden air typical of Tlalpan's fall season. Overall, September serves as a bridge between the drier summer months and the more humid fall and winter, illustrating the region's dynamic climatic shifts.
In September, Tlalpan, Mexico experiences a consistently high UV Index of 14, falling within the extreme exposure category, which means that unprotected skin can burn in just 10 minutes. This trend of elevated UV levels has persisted since March, where the index climbed from 10 in January to its peak in April at 15. From July onwards, the UV Index has remained stable at 14, indicating that the sun's intensity continues unabated as summer transitions into fall. As the month progresses, it’s crucial for residents and visitors alike to take precautions against UV exposure. For more details on the UV Index throughout the year, check out Tlalpan UV Index.
UV Risk Categories
September in Tlalpan, Mexico, offers a delightful transition as the summer days start to give way to the cooler months. With 278 hours of sunshine, this month sees a slight decline from the peak of 333 hours in May, reflecting a gradual shift in the seasons. However, September maintains a respectable amount of sunlight compared to the earlier months of the year, such as 241 hours in January and 277 hours in February. The trend of decreasing hours continues into October, yet there’s a comforting consistency in Tlalpan's sunny disposition, making September a perfect time to enjoy outdoor activities before the chill of autumn sets in.
In Tlalpan, Mexico, the likelihood of sunny weather sees a noticeable dip in September, with only an 11% chance of sunshine. This month stands out as one of the cloudiest in the year, following an already gloomy streak from June through August, where chances hovered around the single digits. The trend is significant; prior to September, the sun shines most brightly in the early months, peaking at 87% in February and maintaining a hopeful 62% in April. As autumn approaches, Tlalpan's weather shifts, leaving residents yearning for the sunny days of earlier months. October offers a slight recovery with a 25% chance, but the persistent cloud cover in September serves as a reminder of the changing seasons and the transition from summer to fall.
In Tlalpan, Mexico, September marks a transitional period in daylight hours, with the city enjoying 12 hours of daylight. This month reflects a steady decline from the peak summer months, where daylight extended to 13 hours in May through July. As we ease into autumn, daylight gradually shortens, mirroring the pattern established earlier in the year. Notably, September's daylight duration is consistent with both March and April, highlighting a balance between the lingering warmth of the sun and the onset of longer nights. As October approaches, Tlalpan will experience a further reduction, signaling the shift towards the shorter days of the upcoming winter.
As September graces Tlalpan, Mexico, the average wind speed gently settles at 1.5 m/s (3 mph), reflecting the calming transition from the summer heat towards a cooler autumn. This slight dip in velocity compared to the preceding months signals a shift in the seasonal rhythm, where the winds tend to be less forceful. Notably, from the earlier months of the year, a gradual fluctuation can be observed, with January's brisk winds reaching 1.8 m/s (4 mph) before tapering off. This pattern of mellowing winds continues into October, which typically sees a slight increase again, reinforcing a cyclical dance of breezes that provide a soothing backdrop to Tlalpan's captivating landscapes. The month of September, with its moderate gusts, invites residents and visitors alike to savor the tranquility of the changing season.
The weather in Tlalpan 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 Tlalpan and find detailed weather information for every month.
In September, temperatures typically range from a mild 5°C (41°F) at night to a pleasant max of 23°C (74°F) during the day, with an average temperature of 14°C (58°F). However, the month is characterized by high humidity at 82% and significant rainfall, receiving about 236 mm (9.3 in) over 25 days. In contrast, January experiences colder temperatures, with nighttime lows dropping to -3°C (27°F) and an average of 10°C (50°F), while still reaching a maximum of 23°C (74°F) during the day. Precipitation is minimal in January, with only 22 mm (0.9 in) falling over just 4 days, accompanied by slightly higher humidity at 84%. For more specific details on January weather in Tlalpan, you can refer to Tlalpan weather in January.
In comparing the weather of September and February, we notice distinct differences in temperature and precipitation patterns. September experiences a broader temperature range with a minimum of 5°C (41°F), averaging 14°C (58°F), and peaking at 23°C (74°F). This month also sees significant rainfall, with 236 mm (9.3 in) spread across 25 days, contributing to a high humidity level of 82%. In contrast, February features a slightly lower minimum temperature of 0°C (32°F) and a higher maximum of 26°C (79°F), resulting in an average of 12°C (54°F). It is much drier, with only 27 mm (1.1 in) of precipitation over just 4 days, coupled with a slightly lower humidity of 78%. For more specific details, you can refer to Tlalpan weather in February.
In comparing the weather of September and March, both months have an average temperature of around 14°C (57°F). However, March experiences slightly higher maximum temperatures, reaching up to 27°C (80°F), while September peaks at 23°C (74°F). Notably, September is characterized by significantly higher precipitation, with 236 mm (9.3 in) over 25 days, compared to just 46 mm (1.8 in) across 9 days in March. Humidity levels are also higher in September at 82%, compared to 75% in March. For more detailed information, you can visit Tlalpan weather in March.
When comparing the weather in September and April, notable differences emerge. September features a wider temperature range with minimums around 5°C (41°F) and maximums reaching 23°C (74°F), while April offers slightly cooler minimums of 3°C (38°F) but can be warmer overall with maximum temperatures hitting 27°C (82°F). Precipitation is a significant factor in September, with 236 mm (9.3 in) over 25 days, reflecting a much wetter month compared to April, which sees only 68 mm (2.7 in) across just 11 days. Humidity is also higher in September at 82%, compared to April’s 70%. For more detailed insights on April weather, you can visit Tlalpan weather in April.
In comparing the weather between September and May, September tends to be much wetter, receiving 236 mm of precipitation over 25 days, which can often lead to a damp atmosphere. In contrast, May is considerably drier with only 90 mm of rainfall spread across 16 days. While both months share a similar minimum temperature of 5°C (41°F), May boasts a higher average temperature of 16°C (61°F) and a maximum temperature that can reach up to 29°C (85°F), compared to September’s maximum of 23°C (74°F). Additionally, September's humidity is slightly higher at 82%, while May remains comfortable at 77%. For more details about the weather in May, you can check Tlalpan weather in May.
September and June present quite contrasting weather patterns. In September, temperatures range from a chilly minimum of 5°C (41°F) to a comfortable maximum of 23°C (74°F), with an average temperature hovering around 14°C (58°F). However, this month sees significant rainfall, with 236 mm (9.3 in) of precipitation over 25 days and high humidity at 82%.
In contrast, June is generally warmer, with temperatures ranging from a minimum of 6°C (43°F) to a maximum of 29°C (85°F), and an average temperature of 16°C (60°F). While June also experiences notable rainfall, totaling 200 mm (7.9 in) over 19 days, it has slightly lower humidity at 76%. For more specifics, you can explore Tlalpan weather in June.
In comparing the weather of September and July, we see some interesting similarities and differences. Both months share the same temperature range, with minimum temperatures at 5°C (41°F), average temperatures around 14°C (58°F), and maximums reaching up to 23°C (74°F). However, September experiences slightly less precipitation at 236 mm (9.3 in) over 25 days, compared to July, which sees a higher rainfall of 267 mm (10.5 in) across 27 days. Additionally, September's humidity is notably higher at 82%, while July has a more temperate humidity level of 68%. For a deeper look into the specific weather conditions during July, you can visit Tlalpan weather in July.
September and August have similar average temperatures, with September showing a slight dip in minimum temperature at 5°C compared to August's 6°C. Both months peak at around 23°C, providing a consistent warmth. However, September experiences higher precipitation, totaling 236 mm over 25 days, while August has 265 mm across 28 days, indicating a more frequent but slightly less intense rainfall pattern in September. Additionally, humidity levels are higher in September at 82%, compared to August's 70%, suggesting a more humid atmosphere as summer transitions into autumn. For more details, you can check Tlalpan weather in August.
September weather features a temperature range from a minimum of 5°C (41°F) to a maximum of 23°C (74°F), with an average temperature of 14°C (58°F). This month is quite wet, registering 236 mm (9.3 in) of precipitation over 25 days, accompanied by a humidity level of 82%. In contrast, October sees a slight dip in temperatures, with a minimum of 2°C (36°F) and an unchanged maximum of 23°C (74°F), while maintaining the same average temperature of 14°C (57°F). However, October experiences significantly less precipitation at 100 mm (4.0 in) over just 15 days, resulting in higher humidity at 91%. For more detailed information, you can refer to Tlalpan weather in October.
In September, the weather is generally warmer with temperatures ranging from a minimum of 5°C (41°F) to a maximum of 23°C (74°F), averaging around 14°C (58°F). However, this month also experiences significant precipitation, totaling 236 mm (9.3 in) over 25 days, coupled with high humidity at 82%. In contrast, November features cooler conditions, with temperatures dropping slightly, with a minimum of -1°C (30°F) and an average of 12°C (53°F), while still reaching a maximum of 23°C (74°F). Rainfall is considerably reduced in November, with only 40 mm (1.6 in) scattered across just 6 days, although humidity remains high at 89%. For more detailed insights on November weather specifics, you can explore Tlalpan weather in November.
In September, the weather is relatively mild, with temperatures ranging from a minimum of 5°C (41°F) to a maximum of 23°C (74°F), resulting in an average temperature of 14°C (58°F). This month also experiences significant precipitation, with an average of 236 mm (9.3 in) of rain over 25 days, accompanied by a humidity level of 82%.
In contrast, December brings much colder temperatures, with lows dipping to -3°C (27°F) and an average of 10°C (51°F). The maximum temperature is more moderate at 22°C (72°F), but overall, December is much drier, seeing only 14 mm (0.6 in) of precipitation over just 3 days. Humidity in December rises slightly to 88%, adding to the wintry feel. For more details on the weather in December, you can check Tlalpan weather in December.
September in Tlalpan is marked by a unique blend of weather characteristics that set it apart from other months. With frequent rain and high humidity levels, the atmosphere feels notably damp, contributing to an overall cooler climate—especially in contrast to the summer heat. While daytime temperatures are pleasant, the evenings can take a sharp dip, creating a notable chill. This month typically experiences more precipitation days than many others in the year, making it a season of transformation as the region transitions into the fall. For a deeper insight into what makes Tlalpan's climate so distinctive, explore Tlalpan Climate.