Last updated: April 22, 2025
Experience the vibrant September weather of San Cristobal de las Casas, Mexico, where the lush landscape thrives under a mix of temperatures. With a maximum of 28°C (83°F) and an average of 20°C (68°F), the days are pleasantly warm, while the minimum drops to a cool 13°C (56°F) at night. Expect ample rainfall, as the city sees about 448 mm (17.6 in) of precipitation over 27 days, creating a lush, green atmosphere. Coupled with an 87% humidity level, September offers a refreshing blend of warmth and moisture, making it an ideal time to explore this culturally rich destination.
In September, San Cristobal de las Casas experiences a mild climate, with temperatures that reflect the transition towards cooler weather as the year progresses. The month's minimum temperature averages around 13°C (56°F), offering a crisp start to the days, while the average hovers at a comfortable 20°C (68°F), perfect for exploring the city's rich cultural heritage. Although highs peak at 28°C (83°F), a slight dip compared to the summer months, this allows for pleasant afternoons without the oppressive heat often found elsewhere. As the rainy season continues, the combination of cooler air and occasional showers enhances the lush greenery of the surrounding landscape, making September a delightful time to experience the beauty of this charming Mexican city.
In September, San Cristobal de las Casas experiences a significant increase in precipitation, with an impressive 448 mm (17.6 in) of rain recorded over 27 days. This month marks the peak of the rainy season, showcasing a dramatic rise in rainfall compared to the preceding months, which gradually build up to this point. Following the drier months of January through April, where rainfall was minimal, September's deluge stands out as a crucial time for local ecosystems, replenishing water sources and nurturing the lush surroundings. As the wettest month of the year, the abundance of rainfall in September not only influences the landscape but also affects daily life, requiring residents to adapt to the frequent showers.
September in San Cristobal de las Casas sees a notable continuation of the year's humidity trends, maintaining a high level of 87%, similar to August. This elevated humidity is part of a broader trend observed in the latter half of the year, where humidity steadily climbs, reaching its peak as October, November, and December follow suit, each averaging around 88%. The transition from the drier months of January to April creates a striking contrast, emphasizing how September, with its lush atmosphere and frequent rainfall, sets the stage for the region's vibrant natural beauty. As the year's seasonal shifts occur, the consistently high humidity levels in these months contribute to the rich tapestry of life found in this enchanting town.
In September, San Cristobal de las Casas experiences a UV Index of 14, categorizing it as extreme with a burn time of just 10 minutes. This trend of intense sun exposure continues from the preceding months, which maintain a steady UV Index of 14 to 15 and emphasize the necessity for sun protection. As the year transitions from the height of summer into early autumn, visitors and residents alike should remain vigilant, sporting sunscreen, hats, and protective clothing to shield against harmful rays. With the UV Index showing little sign of dropping until late October, the importance of awareness and precaution remains critical for outdoor activities. For more detailed information, check out San Cristobal de las Casas UV Index.
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As the warmth of September sunshine graces San Cristobal de las Casas, residents bask in an impressive 288 hours of daylight, marking a comfortable transition into fall. This month, while slightly less sun-drenched than the energetic peak of July with 322 hours, maintains a robust amount of sunshine—more than many earlier months, such as January and June. Notably, the trend of consistently high sunshine hours continues as September shines brighter than October and November, revealing the prolonged embrace of summer's glow before the city settles into the cooler months. The balance of sun and shade creates an inviting atmosphere, encouraging both locals and visitors to savor the vivid culture and breathtaking landscapes.
In September, the likelihood of experiencing sunny weather in San Cristobal de las Casas drops significantly to just 15%, making it one of the least sunny months of the year. Following the relatively higher chances of sun in earlier months like February (76%) and March (68%), September marks a stark contrast as the rainy season casts its shadow, reminiscent of the similarly dim June and July which see a mere 11% and 23% chance of sunshine, respectively. Interestingly, as the year progresses towards October, the likelihood of sun begins to recover to 32%, hinting that this intricate dance of sunshine and rain is typical within the region, culminating in a vibrant natural landscape.
In September, San Cristobal de las Casas enjoys a lush 12 hours of daylight, a perfect balance as the region transitions from the vibrant fullness of summer to the more subdued autumn months. This consistent daylight duration reflects a trend observed throughout the year, where the city experiences longer days during the middle months—June boasts the longest stretch with 13 hours. Following this peak, daylight remains stable at 12 hours from March to September before gradually receding to 11 hours in the cooler months of October to December. This rhythmic ebb and flow of daylight not only shapes daily life but also enriches the natural beauty of the region, inviting residents and visitors alike to embrace the changing seasons.
As September rolls into San Cristobal de las Casas, the gentle caress of the wind slows to an average speed of 1.1 m/s (about 3 mph), marking one of the calmest months of the year. This lull contrasts with the more breezy conditions experienced in the earlier winter months, where wind speeds hover around 1.6 to 1.8 m/s. As summer fades and autumn begins, the wind takes on a softer demeanor, reflected in a gradual decline from the year's peak breezes in late winter and early spring. This subtle shift in wind patterns creates an inviting atmosphere, perfect for leisurely strolls through the city's vibrant streets, where warm sunlight dances with the still air, enhancing the magical ambiance of San Cristobal.
The weather in San Cristobal de las Casas 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 Cristobal de las Casas and find detailed weather information for every month.
In September, the weather is characterized by warmer temperatures, with a minimum of 13°C (56°F) and an average of 20°C (68°F), but can rise to a maximum of 28°C (83°F). This month also sees significant rainfall, averaging 448 mm (17.6 in) over 27 days, resulting in high humidity levels of around 87%. In contrast, January presents a cooler climate, with minimum temperatures dropping to 7°C (44°F), while the average is 17°C (63°F), peaking at 29°C (84°F). Notably, January experiences far less precipitation, with only 15 mm (0.6 in) falling over just 4 days and humidity levels slightly lower at 83%. For more detailed information, you can check out San Cristobal de las Casas weather in January.
September and February exhibit distinct weather characteristics. In September, temperatures range from a pleasant minimum of 13°C (56°F) to a warmer maximum of 28°C (83°F), with an average of 20°C (68°F). This month experiences significant rainfall, with an impressive 448 mm (17.6 in) of precipitation spread over 27 days and high humidity levels at 87%. In contrast, February presents cooler conditions, with a minimum of 8°C (47°F) and a slightly higher maximum of 30°C (86°F), leading to an average temperature of 19°C (66°F). Notably, February is much drier, receiving only 6 mm (0.2 in) of precipitation over just one day and lower humidity at 76%. For detailed information about February weather, visit San Cristobal de las Casas weather in February.
September and March showcase distinct contrasts in weather patterns. In September, temperatures range from a minimum of 13°C (56°F) to a maximum of 28°C (83°F), with an average of 20°C (68°F). This month is characterized by high humidity at 87% and significant rainfall, totaling 448 mm (17.6 in) over 27 days. In contrast, March experiences milder conditions, with temperatures ranging from 10°C (50°F) at night to a peak of 32°C (89°F) during the day, while maintaining an average similar to September at 20°C (69°F). However, March boasts far less precipitation, receiving only 12 mm (0.5 in) over just 3 days and lower humidity at 66%. For more detailed insights, check out San Cristobal de las Casas weather in March.
September and April present contrasting weather patterns. In September, temperatures range from a minimum of 13°C (56°F) to a maximum of 28°C (83°F), with an average of 20°C (68°F). The month is notably wet, boasting a high precipitation of 448 mm (17.6 in) over 27 days and a humidity level of 87%. In contrast, April experiences milder conditions with a temperature minimum of 10°C (51°F) and a maximum of 32°C (90°F), averaging around 21°C (70°F). This month sees significantly less rainfall, with only 50 mm (2.0 in) over 8 days and a humidity level of 59%. For a more detailed look at April weather, you can visit San Cristobal de las Casas weather in April.
September and May exhibit notable contrasts in weather patterns. In September, average temperatures range from a minimum of 13°C (56°F) to a maximum of 28°C (83°F), while May sees slightly warmer temperatures with a minimum of 13°C (56°F) and a maximum reaching 32°C (90°F). Additionally, September experiences significantly higher precipitation levels at 448 mm (17.6 in) over 27 days, compared to May's 255 mm (10.1 in) across 22 days. The humidity is also higher in September at 87%, in contrast to May's more comfortable 64%. For a closer look at May's climate, you can visit San Cristobal de las Casas weather in May.
In comparing the weather of September and June, both months exhibit similar average temperatures around 20°C (68°F), but there are notable differences in precipitation and humidity. September typically sees slightly cooler minimum and maximum temperatures, ranging from 13°C (56°F) to 28°C (83°F), while June's temperatures range from 14°C (57°F) to 29°C (84°F). Precipitation levels are higher in June, totaling 531 mm (20.9 in) over 28 days, compared to September's 448 mm (17.6 in) of rainfall over 27 days. Additionally, September experiences higher humidity at 87%, contrasting with June's lower humidity level of 69%. For more detailed information on June weather, you can visit San Cristobal de las Casas weather in June.
Comparing the weather in September to that of July reveals notable differences. While both months have similar minimum temperatures (13°C or 56°F) and average temperatures (20°C or 68-69°F), July experiences slightly warmer maximum temperatures, reaching up to 29°C (84°F) compared to September's 28°C (83°F). Precipitation is significantly higher in September, with 448 mm (17.6 in) falling over 27 days, while July sees only 262 mm (10.3 in) over 20 days, making September considerably wetter. Additionally, humidity levels are slightly higher in September at 87%, compared to 82% in July. For more detailed information, explore San Cristobal de las Casas weather in July.
September's weather closely resembles August, with both months experiencing a minimum temperature of 13°C (56°F) and an average of 20°C (68°F). However, September sees a slight increase in maximum temperature, reaching 28°C (83°F) compared to August's peak of 29°C (84°F). A notable difference is found in precipitation: September has significantly higher rainfall at 448 mm (17.6 in) over 27 days, while August recorded 346 mm (13.6 in) over 23 days. Despite the similarities in temperature and humidity levels, September is characterized by much wetter conditions. For more detailed insights, check out San Cristobal de las Casas weather in August.
In September, weather in San Cristobal de las Casas features temperatures ranging from a minimum of 13°C (56°F) to a maximum of 28°C (83°F), with an average of 20°C (68°F). The month is characterized by significant rainfall, totaling 448 mm (17.6 in) over 27 days, and a high humidity level of 87%. In contrast, October sees similar minimum and average temperatures, but the maximum slightly decreases to 27°C (82°F). The precipitation also drops to 298 mm (11.7 in) spread over 20 days, while humidity remains fairly high at 88%. This transition reflects a shift towards slightly drier conditions as the year progresses. For more details on the weather in October, you can visit San Cristobal de las Casas weather in October.
In comparing the weather between September and November, September is characterized by warmer temperatures, with averages around 20°C (68°F) and maximums reaching 28°C (83°F). However, it also experiences significantly higher rainfall, with 448 mm (17.6 in) spread over 27 days, resulting in a humid environment with an average humidity of 87%. In contrast, November brings cooler conditions, with minimum temperatures dropping to 9°C (48°F) and an overall average of 18°C (65°F). The precipitation level significantly decreases to 47 mm (1.8 in) across just 8 days, while humidity remains high at 88%. For a detailed look at November weather in the region, check out San Cristobal de las Casas weather in November.
In September, the weather is generally warmer and much wetter, with temperatures ranging from a minimum of 13°C (56°F) to a maximum of 28°C (83°F) and an average of 20°C (68°F). The month sees substantial rainfall, totaling 448 mm (17.6 in) over 27 days, resulting in high humidity levels of 87%. In contrast, December features cooler temperatures, with a minimum of 6°C (42°F) and an average of 18°C (64°F), while still reaching 28°C (83°F) at the peak. Rainfall significantly decreases to just 23 mm (0.9 in) spread over only 3 days, and humidity remains slightly elevated at 88%. For more detailed weather information, you can check San Cristobal de las Casas weather in December.
September in San Cristobal de las Casas offers a unique blend of warmth and rainfall that sets it apart from other months. With average temperatures hovering around 20°C (68°F), the days can feel pleasantly mild, yet the high humidity—often reaching 87%—adds a significant dampness to the air. This month experiences the peak of the rainy season, with nearly 27 days of rain and a total precipitation of 448 mm (17.6 in), making it a standout in terms of wet weather. While other months may offer clearer skies, September's lush foliage and vibrant landscapes are a testament to its frequent showers, providing a pristine backdrop for exploring this charming town. For more insights into the weather patterns, visit San Cristobal de las Casas Climate.