Last updated: April 22, 2025
September in Chapultepec, Mexico is characterized by warm temperatures and higher humidity levels. With maximums reaching 35°C (95°F) and an average temperature of 26°C (79°F), the weather invites outdoor activities amidst lush, green surroundings. However, residents and visitors should be prepared for frequent rain, as the month averages 255 mm (10.0 in) of precipitation over 27 days, resulting in a high humidity level of 87%. While the showers can provide a refreshing break from the heat, they also contribute to the vibrant, tropical atmosphere that defines this beautiful region in September.
In September, Chapultepec experiences a delightful end to the summer, with temperatures typically ranging from a mild 20°C (68°F) at night to a pleasant 35°C (95°F) during the day. The average daytime temperature hovers around 26°C (79°F), offering a comfortable climate for outdoor activities. This month marks a seamless transition from August’s heat, as humidity begins to wane and cooler nights become more common. With temperatures reflecting a stable warmth, September is an ideal time to explore the lush landscapes and cultural offerings of Chapultepec, where you can bask in the lingering summer vibes before the cooler autumn air sets in.
September in Chapultepec sees a substantial increase in precipitation, with 255 mm (10.0 in) of rainfall over 27 days, marking one of the wettest months of the year. This heightens the monsoon season, following August's significant 162 mm (6.4 in). The rainfall patterns indicate a peak in precipitation during these late summer months, leading into an equally water-rich October with 337 mm (13.3 in). In contrast, the spring and early summer months, such as April and May, display notably lower totals, suggesting a seasonal shift that invites lush greenery and revitalizes the area's flora. Overall, September serves as a critical transition point in Chapultepec’s climate, illustrating the region's dramatic fluctuations in precipitation.
As the summer months give way to autumn, September in Chapultepec, Mexico, marks a culmination of humidity levels that mirror the preceding August, both resting at 87%. This high humidity is characteristic of late summer, which typically sees peaks in moisture before transitioning into the drier fall season. Notably, a marked drop from March's 66% humidity signifies the onset of the warmer months, and the respite from the dry air of early spring is likely welcomed by locals and visitors alike. As the year progresses into October and December, humidity remains elevated at 88%, reflecting a stable, moist climate that persists into the latter part of the year. Ultimately, this trend underscores the region's tropical influences, contributing to its lush landscapes and vibrant ecosystems.
In September, Chapultepec, Mexico, experiences a UV Index of 13, maintaining an extreme exposure category and a swift burn time of just 10 minutes. This month is part of a trend that sees consistently high UV levels throughout the warmer months, with several months peaking at the same extreme index. From February through September, the region endures intense sunlight, requiring vigilant sun protection measures. As the season shifts toward fall, the UV Index begins to decrease, but September still calls for caution. For more insights on the UV Index trends in Chapultepec, visit Chapultepec UV Index.
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As September unfolds in Chapultepec, Mexico, a delightful 280 hours of sunshine grace the month, contributing to the vibrant atmosphere. This snapshot of sunlight follows a summer peak, where May and July basked in 316 hours, making them the sunniest months of the year. As the days shorten into autumn, September maintains a warm glow, though slightly reduced compared to the sun-soaked days of summer. This gradual shift is mirrored in October's forecasted 260 hours, which hints at the cooler season ahead, yet still invites residents and visitors to enjoy the eclectic charm of Chapultepec under its sunlit sky. Overall, the trends reflect a compelling transition from the high-energy brightness of summer into the softer, yet still inviting, allure of fall.
In Chapultepec, Mexico, the likelihood of sunny weather sees a notable shift as the seasons change. September brings a decrease in sunshine, with only an 18% chance of clear skies, making it one of the cloudier months of the year. This is particularly stark compared to the brighter days of February and March, which boast around 60% and 61% sunshine, respectively. As summer fades, the patterns reveal a dip in sunny days, preceded by similar low probabilities in June and August. Following September, the chance of sunshine begins to rise again in October to 38%, hinting at the gradual return of more favorable weather conditions as fall settles in.
In Chapultepec, Mexico, September experiences a delightful shift in daylight, offering 12 hours of sunshine that mirrors the previous summer months of June, July, and August. This steady daylight duration reflects a gradual transition from the longer days of summer towards the shorter ones of autumn. As the year progresses, daylight begins to shorten slightly after September, hinting at the onset of the cooler months ahead. The consistency of 12 hours throughout the late summer and early autumn creates a balanced environment, perfect for enjoying the vibrant natural beauty of Chapultepec during this time.
As September unfolds in Chapultepec, Mexico, the gentle whispers of the wind invite a sense of transition. With an average speed of 1.3 m/s (3 mph), the breezes begin to cool, slightly drifting down from the summer highs of 1.7 m/s (4 mph) in the preceding months of July and March. This subtle decline in wind speed mirrors the shift from the vibrant warmth of summer to the crisp embrace of autumn. Notably, the consistent mildness of September's winds establishes a serene atmosphere, perfectly complementing the park's lush landscapes as they start to echo the colors of fall. This harmonious blend of tranquility and change captures the essence of Chapultepec in September, making it a captivating time to experience the park's beauty.
The weather in Chapultepec 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 Chapultepec and find detailed weather information for every month.
In September, the weather is significantly warmer and wetter compared to January. With minimum temperatures around 20°C (68°F) and an average of 26°C (79°F), September experiences maximum highs reaching up to 35°C (95°F). The month is marked by heavy precipitation, totaling 255 mm (10.0 in) over 27 days, coupled with high humidity levels of 87%. In contrast, January offers a cooler climate, with minimum temperatures dropping to 10°C (50°F) and an average of 21°C (70°F). Although it has maximum temperatures of 33°C (91°F), January records less rainfall, with only 191 mm (7.5 in) spread across 12 days and somewhat lower humidity at 83%. For more details on January weather, visit Chapultepec weather in January.
In comparing the weather between September and February, it's clear that September tends to be much warmer and more humid. The minimum temperature in September is 20°C (68°F), peaking at a scorching 35°C (95°F), while February starts off much cooler with a minimum of 11°C (52°F) and an average of 22°C (72°F). Additionally, September experiences significantly more rainfall, with 255 mm (10.0 in) over 27 days, compared to just 98 mm (3.9 in) over 9 days in February. This results in a higher humidity of 87% in September, compared to 76% in February, making the earlier month notably more oppressive. For a more detailed look at February weather specifics, you can visit Chapultepec weather in February.
September and March present contrasting weather patterns. In September, temperatures range from a minimum of 20°C (68°F) to a maximum of 35°C (95°F), with an average of 26°C (79°F). This month is characterized by high humidity at 87%, significant precipitation of 255 mm (10.0 in) over 27 days, making it quite a wet period. In contrast, March features generally warmer days with temperatures varying from 13°C (56°F) to 36°C (96°F), averaging 24°C (75°F). This month sees much less rainfall, with only 108 mm (4.2 in) spread over 8 days and lower humidity at 66%. For more details on the weather in March, you can visit Chapultepec weather in March.
September and April present distinct weather profiles, reflecting the transitional seasons of many regions. In September, the temperatures range from a minimum of 20°C (68°F) to a maximum of 35°C (95°F), with an average of 26°C (79°F). This month is characterized by high humidity at 87% and considerable rainfall, totaling 255 mm (10.0 in) over 27 days. In contrast, April greets visitors with slightly lower minimum temperatures of 14°C (57°F) and a notable maximum of 39°C (103°F), while still averaging 26°C (79°F). Rainfall in April is significantly less at 87 mm (3.4 in) over just 11 days and comes with a much drier atmosphere, as humidity drops to 59%. For more specific insights into the weather conditions, you can refer to Chapultepec weather in April.
When comparing the weather in September and May, several notable differences emerge. In September, temperatures typically range from a minimum of 20°C (68°F) to a maximum of 35°C (95°F), with an average of 26°C (79°F). The month experiences significant rainfall, with 255 mm (10.0 in) of precipitation over 27 days, resulting in high humidity levels at 87%. In contrast, May boasts slightly warmer temperatures, with a minimum of 16°C (61°F), an average of 27°C (81°F), and a maximum reaching 38°C (101°F). Precipitation in May is considerably lower, at 124 mm (4.9 in) over 18 days, accompanied by a more comfortable humidity level of 64%. For more detailed insights, check out Chapultepec weather in May.
In comparing the weather of September and June, we observe some notable differences despite their similar average temperatures. September typically features a minimum temperature of 20°C (68°F) and a maximum of 35°C (95°F), with high humidity at 87%. This month experiences significant rainfall, accumulating around 255 mm (10.0 in) over approximately 27 days. In contrast, June sees slightly cooler conditions, with minimum temperatures of 19°C (67°F) and a peak of 36°C (98°F). However, it experiences higher precipitation levels, totaling 334 mm (13.2 in) also over 27 days, but with lower humidity at 69%. For more detailed insights, you can check Chapultepec weather in June.
In comparing the weather of September to that of July, we observe notable differences in temperature, precipitation, and humidity levels. September experiences slightly higher minimum (20°C) and maximum temperature (35°C) ranges, with an average temperature similar to July’s (26°C). However, September is significantly wetter, with a total precipitation of 255 mm over 27 days, compared to July’s 109 mm over 19 days. The humidity in September is also higher at 87%, compared to 82% in July, contributing to a more oppressive feel during the month. For a more detailed look at July's weather, you can refer to Chapultepec weather in July.
September weather shows consistency with August, as both months experience a minimum temperature of 20°C (68°F) and a maximum of 35°C (95°F). However, September is generally wetter, receiving 255 mm (10.0 in) of precipitation over 27 days, compared to August’s 162 mm (6.4 in) over 23 days. Despite this increase in rain, the humidity remains constant at 87% for both months, creating a similarly muggy atmosphere. For more detailed insights, you can check the Chapultepec weather in August.
September and October both experience warm temperatures, with September averaging 26°C (79°F) and October slightly cooler at 25°C (77°F). Both months share a maximum temperature of 35°C (95°F), but September starts warmer with a minimum temperature of 20°C (68°F), compared to October's 17°C (63°F). Precipitation is notably higher in October, with 337 mm (13.3 in) over 25 days, compared to September's 255 mm (10.0 in) across 27 days. Humidity remains relatively high in both months, with October reaching 88% against September's 87%. For more detailed information, check the Chapultepec weather in October.
September and November exhibit noticeable differences in weather patterns. September tends to be warmer, with average temperatures ranging from a minimum of 20°C (68°F) to a maximum of 35°C (95°F), while November shows slightly cooler temperatures, peaking at 34°C (94°F) but dropping to a minimum of 13°C (56°F). Both months experience significant precipitation, but September has a higher total rainfall of 255 mm (10.0 in) spread over 27 days, compared to November's 280 mm (11.0 in) over just 17 days. Humidity remains relatively high in both months, with November at 88% and September at 87%. For those interested in more details, you can check the Chapultepec weather in November.
In September, the weather is considerably warmer, with average temperatures ranging from a minimum of 20°C (68°F) to a maximum of 35°C (95°F). This month also sees high humidity at 87% and significant rainfall, with 255 mm (10.0 in) across 27 days. In contrast, December experiences cooler average temperatures, with a minimum of 10°C (50°F) and a maximum of 32°C (90°F), and the average temperature resting at 21°C (71°F). Precipitation decreases to 189 mm (7.4 in) over just 13 rainy days, while humidity remains high at 88%. For a detailed view of climate conditions in December, you can check out Chapultepec weather in December.
September in Chapultepec marks a notable transition in the weather, characterized by a warm atmosphere and frequent rainfall that sets it apart from other months. With an average temperature that leans towards a comfortable 26°C, it provides a pleasant respite from the summer heat. However, the high humidity and increased precipitation, averaging 27 days of rain, create a lush and vibrant environment, vastly different from the dry spells typical of preceding months. This unique blend of warmth and moisture offers both challenges and beauty, making September a fascinating time to experience Chapultepec's climate. To learn more about what to expect throughout the year, visit Chapultepec Climate.