Last updated: April 22, 2025
September in San Cristobal, Mexico is characterized by warm temperatures and significant rainfall. With maximum temperatures reaching 34°C (93°F) and an average of 25°C (78°F), the weather remains pleasant for most of the month. However, the minimum temperature can dip to 19°C (67°F), especially during the cooler nights. This time of year sees substantial precipitation, totaling 444 mm (17.5 in) over approximately 28 rainy days, leading to an 82% humidity level that keeps the air feeling quite moist. Visitors can expect a lush, green landscape, but should be prepared for frequent downpours throughout their stay.
In September, San Cristobal experiences a delightful blend of warm days and cooler nights, with temperatures ranging from a minimum of 19°C (67°F) to a maximum of 34°C (93°F). The city maintains an average temperature of 25°C (78°F), consistent with the mild climate seen throughout the year. While September still enjoys the warmth typical of late summer, the gradual shift towards cooler weather is evident, mirroring trends seen in previous months. As the month progresses, residents and visitors alike can appreciate the gentle transition, making it an inviting time to explore the rich culture and stunning landscapes of this charming Mexican destination.
September in San Cristobal, Mexico, is marked by a dramatic increase in precipitation, with an impressive 444 mm (17.5 in) of rainfall across 28 days. This month's deluge is the peak of the rainy season, following the intense rainfall of August, which recorded 357 mm (14.1 in). The trend shows a steady escalation from the drier months at the beginning of the year, culminating in a significant surge in moisture during the summer months. As the region transitions into October, rainfall tapers off to 291 mm (11.4 in), but September remains a pivotal month, characterizing the lush landscape that flourishes in response to the abundant water. Such patterns not only shape the ecosystem but also influence local agriculture and daily life, emphasizing the vital role of seasonal rains in this vibrant region.
San Cristobal experiences a notable increase in humidity as the year progresses, peaking in the late summer months. September, with a humidity level of 82%, reflects this trend, marking it as one of the most humid months alongside August. As the heat of summer transitions into the cooler fall, the humidity begins to taper off slightly in October. The rise from 61% in February to September's levels showcases the region’s shift from drier to more tropical conditions, making the air feel thick and vibrant during this time. The humidity not only impacts the climate but also enhances the lushness of the surrounding landscapes, creating a rich tapestry of life in this beautiful Mexican town.
In September, San Cristobal experiences a UV Index of 13, maintaining its categorization of extreme exposure. This level of intensity means that even a brief 10-minute exposure could lead to sunburn, highlighting the importance of sun protection. Notably, September continues a trend established from May through August, where the UV Index consistently hovers between 13 and 14, reflecting an ongoing period of heightened UV activity as summer transitions to fall. With this in mind, visitors and residents alike should remain vigilant about sun safety. For more detailed information, check out San Cristobal UV Index.
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In September, San Cristobal basks in a delightful 263 hours of sunshine, marking a gentle transition from the summer glow of previous months. While this figure is lower than the sun-drenched peaks of March and May, it still captures the essence of the region's pleasant warmth and charm. As summer fades, you can sense a softening in the sunlight, creating a serene atmosphere perfect for exploring the city's rich culture. The gradual decrease from the vibrant summer months hints at the arrival of the cooler autumn, yet the warmth remains inviting and invigorating, laying the groundwork for a colorful October filled with 280 hours of light. Overall, September in San Cristobal presents a beautiful balance of sunshine and tranquility, inviting visitors to enjoy the enchanting landscape.
In San Cristobal, Mexico, September sees a notable dip in the likelihood of sunny weather, with only a 9% chance of sun gracing the skies. This marks a significant contrast to the more favorable conditions earlier in the year—where February shines at 82% and March follows closely at 76%. As we transition from the summer months, the chances of a sunny day plummet, hitting their lowest point in September before gradually recovering in October to 28%. This trend highlights the region's shift towards wetter conditions, making September a period where travelers should prepare for less reliable sunshine and possibly more rain. Overall, if you’re dreaming of sunny days in San Cristobal, consider planning your visit for the earlier months when sunlight is more abundant.
In September, San Cristobal enjoys a generous 12 hours of daylight, continuing the trend seen throughout the summer months. As the year transitions from the extended sunlight of June, which boasts 13 hours, daylight durations settle at 12 hours from March to September, creating a period of stability that is perfect for enjoying the region's natural beauty. This consistency gives way to shorter days as October approaches, where daylight reduces to 11 hours, marking the beginning of the gradual decline in sunlight leading towards winter. Overall, September serves as a beautiful bridge between summer's brilliance and the impending autumnal shift.
As September rolls into San Cristobal, the wind takes on a gentle demeanor, with an average speed of just 1.1 m/s (2 mph). This marks a continuation of the softer breezes that began in August, creating a serene atmosphere perfect for leisurely strolls through the charming streets. The winds remained relatively calm throughout the summer months, averaging around 1.1 to 1.2 m/s, reflecting a consistent lull. Interestingly, September shares this tranquil wind speed with October, suggesting a smooth transition into the fall season where the air remains pleasantly mild. As the cool colors of autumn begin to emerge, the consistent, soft wind beckons locals and visitors alike to embrace the peaceful vibe of this historic town.
The weather in San Cristobal 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 and find detailed weather information for every month.
September and January offer stark contrasts in weather. September experiences warmer temperatures with a minimum of 19°C (67°F) and an average of 25°C (78°F), peaking at 34°C (93°F). It is characterized by high humidity at 82% and significant rainfall, measuring 444 mm (17.5 in) over 28 days. In contrast, January features cooler temperatures, with a minimum of 13°C (55°F) and an average of 25°C (77°F), reaching up to 36°C (97°F). This month sees drastically reduced precipitation, with only 4 mm (0.2 in) recorded over 0 rainy days, combined with lower humidity levels at 65%. For more details on what to expect during January, you can check San Cristobal weather in January.
In September, the weather is notably warmer with average temperatures ranging from a minimum of 19°C (67°F) to a maximum of 34°C (93°F) and high humidity levels at 82%. Rain is frequent during this month, with 444 mm (17.5 in) of precipitation spread over 28 days, creating a lush environment. In contrast, February offers a more moderate climate, with minimum temperatures around 12°C (54°F) and a maximum reaching up to 37°C (100°F). This month experiences little to no precipitation, with just 1 mm (0.1 in) recorded and an overall humidity of 61%. For a deeper look at February weather, visit San Cristobal weather in February.
September and March present contrasting weather patterns. In September, temperatures range from a minimum of 19°C (67°F) to a maximum of 34°C (93°F), with an average of 25°C (78°F). The month is notably humid at 82%, and experiences significant rainfall, totaling 444 mm (17.5 in) over 28 days. In stark contrast, March boasts milder conditions, with temperatures ranging from a minimum of 16°C (61°F) to a maximum of 37°C (99°F) and an average of 27°C (80°F). Precipitation is minimal during March, with only 3 mm (0.1 in) recorded across just 1 day, contributing to a lower humidity level of 59%. For further details, check out San Cristobal weather in March.
When comparing the weather between September and April, notable differences emerge. September experiences a warm temperature range, with a minimum of 19°C (67°F) and a maximum of 34°C (93°F), accompanied by high humidity at 82% and significant rainfall of 444 mm (17.5 in) over 28 days. In contrast, April boasts slightly milder temperatures, with a minimum of 16°C (61°F) and a striking maximum of 39°C (102°F), but it remains dry with virtually no precipitation and lower humidity at 62%. For more detailed insights into April's conditions, check out San Cristobal weather in April.
In comparing the weather of September and May, September tends to be more humid and rainy, with an average temperature of 25°C (78°F) and significant precipitation of 444 mm (17.5 in) over 28 days. This contrasts sharply with May, which experiences higher average temperatures of 28°C (82°F) and peaks at 38°C (100°F), but much less rainfall at only 68 mm (2.7 in) across 10 days. While both months start with similar minimum temperatures around 19°C (66°F), May's lower humidity at 73% makes it feel warmer and less oppressive than September’s 82%. For more details, you can refer to San Cristobal weather in May.
In comparing the weather of September and June, we see a slight difference in temperature and precipitation levels. September typically experiences a minimum temperature of 19°C (67°F) and averages around 25°C (78°F), with maximum temperatures reaching up to 34°C (93°F). In contrast, June has a minimum temperature of 20°C (69°F) and averages at 26°C (79°F), peaking at 35°C (95°F). While both months witness considerable rainfall, September receives more, totaling 444 mm (17.5 in) over 28 days, compared to June's 354 mm (13.9 in) over 26 days. The humidity remains high in both months, with September at 82% and June at 78%. For a deeper dive into the specifics, you can check out San Cristobal weather in June.
When comparing the weather in September and July, notable differences emerge. September features slightly cooler temperatures, with a minimum of 19°C (67°F), an average of 25°C (78°F), and a maximum of 34°C (93°F). In contrast, July sees a slightly warmer minimum of 20°C (68°F), an average of 26°C (79°F), and a maximum of 35°C (94°F). Precipitation also plays a significant role; September experiences considerably higher rainfall with 444 mm (17.5 in) over 28 days, compared to July's 267 mm (10.5 in) during the same number of days. Additionally, humidity levels are slightly elevated in September at 82%, compared to July's 79%. For a closer look at July’s weather specifics, visit San Cristobal weather in July.
In comparing the weather of September and August, we find that both months share similar temperature ranges, with minimums of 19°C (67°F) and averages around 25°C (78°F). However, August slightly edges out September with a maximum of 34°C (94°F) compared to September's 34°C (93°F). Precipitation levels also differ, as September experiences more rainfall, totaling 444 mm (17.5 in) over 28 days, while August sees 357 mm (14.1 in) over 29 days. Humidity remains consistent at 82% for both months. For a closer look at August's weather specifics, you can visit San Cristobal weather in August.
In September, the weather tends to be slightly warmer, with an average temperature of 25°C (78°F) and peak temperatures reaching up to 34°C (93°F). The month is characterized by significant rainfall, totaling 444 mm (17.5 in) over 28 days, resulting in high humidity levels of around 82%. In contrast, October experiences a similar average temperature of 25°C (77°F) but with a slight decrease in maximum temperature to 33°C (93°F). Precipitation also drops to 291 mm (11.4 in) over 27 days, leading to lower humidity at 79%. For more detailed information, you can check out San Cristobal weather in October.
When comparing the weather in September and November, there are notable differences in temperature and precipitation. September experiences warm temperatures with a minimum of 19°C (67°F) and a maximum reaching up to 34°C (93°F), accompanied by high humidity at 82%. The month is also marked by substantial rainfall, totaling 444 mm (17.5 in) over 28 days. In contrast, November sees slightly cooler minimum temperatures of 16°C (61°F) and a maximum of 36°C (96°F), while maintaining a consistent average of 25°C (78°F). Precipitation declines significantly to just 42 mm (1.7 in), spread across only 8 days, and the humidity drops to 72%. For more detailed information about the weather in November, you can visit San Cristobal weather in November.
In September, the weather is characterized by high temperatures averaging around 25°C (78°F), with a minimum of 19°C (67°F) and a maximum soaring to 34°C (93°F). This month experiences significant rainfall, totaling 444 mm (17.5 in) over 28 days, and a high humidity level of 82%. In contrast, December offers a milder climate with similar average temperatures of 25°C (77°F), but a lower minimum of 14°C (58°F) and a peak of 35°C (96°F). Unlike September, December sees minimal precipitation of only 24 mm (1.0 in) across just 3 days, along with reduced humidity at 70%. For more detailed information, check out San Cristobal weather in December.
September in San Cristobal stands out as a notably rainy month, with a significant increase in precipitation compared to other times of the year. The high humidity of around 82% creates a lush and vibrant atmosphere, while temperatures hover comfortably, making it a unique blend of warmth and moisture. This month, unlike the drier periods, welcomes persistent showers that contribute to the region's rich vegetation and refreshing landscapes. If you’re looking for an immersive experience in nature, September is a perfect time to visit, offering a different charm than the drier months. For more detailed insights on the climate throughout the year, visit San Cristobal Climate.