Last updated: April 22, 2025
In September, San Juan del Río, Mexico, experiences a vibrant balance of warmth and humidity, with maximum temperatures reaching up to 32°C (90°F) and an average of 27°C (80°F). The city sees a highlighted minimum temperature of 22°C (72°F), creating a comfortable climate for locals and visitors alike. However, this month is characterized by its notable rainfall, totaling 368 mm (14.5 in) spread over 25 days, resulting in a humidity level of approximately 78%. These elements create a lush, green landscape while offering a captivating backdrop for exploring the cultural richness of the region.
September in San Juan del Río, Mexico, showcases a delightful continuation of the late summer warmth, with temperatures that hover comfortably around 22°C (72°F) at night and reach a pleasant 32°C (90°F) during the day. The average temperature remains steady at 27°C (80°F), mirroring the consistent warmth experienced throughout the preceding months. As the city transitions towards autumn, the serene climate creates an inviting backdrop for outdoor activities and cultural exploration. While September's maximum temperature dips slightly from the high summer figures, the overall warmth remains inviting, ensuring that the vibrant spirit of San Juan del Río shines through even as the year draws towards its end.
In September, San Juan del Río experiences its peak precipitation, recording an impressive 368 mm (14.5 in) over 25 days of rain, making it one of the wettest months of the year. This marks a notable increase from the previous months, particularly following August's hefty 357 mm (14.1 in). The consistent downpour during these late summer weeks highlights a transition into the wetter season, where clouds gather and unleash their bounty, nurturing the local landscape. The gradual buildup of rainfall from early in the year now culminates in a vibrant and lush environment, as both flora and fauna thrive in response to this abundant water supply. As October approaches, precipitation begins to decline, but September remains a pivotal month where the rhythm of nature is dictated by moisture-laden skies.
In September, San Juan del Río experiences a humidity level of 78%, maintaining a high moisture trend that peaks during the summer months. Following the gradual rise from 63% in March to a summer high of 79% in August, September marks a slight dip, yet remains comfortably humid. As the rainy season subsides, the atmospheric moisture continues to linger, providing a lush backdrop to the town as it transitions into the cooler autumn months. This pattern of elevated humidity illustrates the region's tropical influence, with humidity gradually declining from October onward, settling to 75%, before further easing into the winter months.
As September rolls into San Juan del Rio, Mexico, the UV Index reaches a peak of 14, maintaining its status within the extreme exposure category. This marks a trend seen throughout the summer months, where the UV Index regularly hovers between 13 and 14, reflecting a consistent need for sun protection. With a rapid burn time of just 10 minutes, it's crucial for residents and visitors alike to minimize their time in direct sunlight during this period. Following September, the UV Index begins to decrease in October, hinting at a gradual moderation as the year shifts toward cooler months. For more insights on UV exposure patterns, check out San Juan del Rio UV Index.
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September in San Juan del Rio, Mexico, offers a gradual shift in sunshine hours, with 234 hours of brilliant daylight illuminating the month. This reflects a slight decline from the vibrant summer months, where sunshine peaked with 316 hours in May and 286 hours in July. The trend indicates a transition as the summer heat ebbs and the landscape prepares for the autumn months ahead. Although September receives fewer sunshine hours compared to its predecessors, it still showcases the beauty of early fall, set against a backdrop of warm hues and a more comfortable climate, inviting visitors to enjoy the stunning scenery without the summer's intensity. As we move into October, expectations rise with a rebound to 258 hours, hinting that the sunny allure of San Juan del Rio continues to charm throughout the year.
In September, San Juan del Rio, Mexico experiences a notable dip in sunny weather, with only an 11% chance of sunshine. This trend marks one of the lowest probabilities of sunshine throughout the year, following a particularly gloomy summer where the chances in June, July, and August also plummeted to 13%. As the rainy season peaks, the vibrant sun gives way to clouds and precipitation, creating a stark contrast to the more reliable sunshine found in the earlier months like February and November, which boast chances as high as 79%. Overall, if you're planning a visit in September, be prepared for overcast skies rather than the bright sunshine that many expect from this beautiful region!
As September unfolds in San Juan del Río, Mexico, residents can enjoy a delightful 12 hours of daylight. This month continues the trend established in August, where daylight began to taper off slightly from the peak of 13 hours experienced during the summer months of June and July. The return to 12 hours signifies a gradual transition towards the shorter days of October, while maintaining the balance of bright days that characterized the late spring and summer. Overall, the patterns reflect the region’s consistent daylight availability, providing ample opportunity for outdoor activities as summer wanes.
In September, the gentle whispers of the wind in San Juan del Río typically settle at a calm average speed of 1.3 m/s (3 mph), tying with several months for the lightest breezes of the year. Following the summer months, where the wind speed fluctuated slightly higher, this transition into fall brings a soothing stillness. Throughout the year, we observe a pattern where winds tend to be at their most vibrant in the spring, notably in April, before tapering off into the quieter months of late summer and early autumn. As the year progresses, October and November maintain this serene pace, suggesting a comforting consistency in the region’s meteorological rhythm as it gracefully drifts towards the cooler months.
The weather in San Juan del Rio 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 Juan del Rio and find detailed weather information for every month.
In September, the weather is characterized by warm temperatures, with a minimum of 22°C (72°F) and an average of 27°C (80°F), reaching a maximum of 32°C (90°F). The month is also marked by high humidity at 78% and significant precipitation, averaging 368 mm (14.5 in) over 25 days, making it one of the wetter periods of the year. In contrast, January experiences slightly cooler temperatures, with a minimum of 19°C (67°F), an average of 26°C (78°F), and a maximum of 34°C (93°F). January boasts a stark reduction in precipitation, with only 5 mm (0.2 in) falling over just one day, and a lower humidity level of 66%. For more detailed information, visit San Juan del Rio weather in January.
In September, the weather is typically warm and humid, with minimum temperatures around 22°C (72°F) and average highs reaching up to 32°C (90°F). This month also experiences significant rainfall, averaging 368 mm (14.5 in) across approximately 25 days, leading to a high humidity level of 78%. Conversely, February offers a different climate, characterized by lower humidity at 64% and minimal rainfall—only about 3 mm (0.1 in)—with temperatures ranging from a minimum of 18°C (64°F) to maximums of 33°C (92°F). The drier conditions in February make it a more comfortable month for outdoor activities. For more details, check out San Juan del Rio weather in February.
In comparing the weather between September and March, we notice some striking differences. September tends to be warmer, with an average temperature of 27°C (80°F) and maximums reaching up to 32°C (90°F). However, it also brings considerable rainfall, with about 368 mm (14.5 in) spread over 25 days, resulting in a high humidity level of 78%. In contrast, March offers a slightly cooler climate, with average temperatures around 26°C (80°F) and maximums peaking at 34°C (94°F). Furthermore, March is notably dry, receiving only 2 mm (0.1 in) of precipitation across zero rainy days, and features a lower humidity of 63%. For more details on March weather, you can visit San Juan del Rio weather in March.
September and April present contrasting weather conditions. While September experiences a warmer average temperature of 27°C (80°F) with a maximum that can reach 32°C (90°F), it is also characterized by heavy rainfall, accumulating 368 mm (14.5 in) over 25 days. In contrast, April boasts a slightly lower minimum temperature of 20°C (68°F) but can peak at a scorching 35°C (96°F), all while remaining remarkably dry with just 1 mm of precipitation over the month, and no rainy days. Additionally, humidity levels are higher in September at 78% compared to April's 69%. For a detailed overview of April's climate, you can visit San Juan del Rio weather in April.
When comparing the weather in September and May, both months feature similar average temperatures, around 27°C (80°F). However, September tends to be more humid with an average humidity of 78% compared to May's 73%. Additionally, September is significantly wetter, experiencing an average of 368 mm (14.5 in) of rainfall across 25 days, while May only sees about 28 mm (1.1 in) over just 5 days. For a more detailed look at May weather specifically, check out San Juan del Rio weather in May.
In comparing the weather between September and June, both months exhibit warm temperatures, with average highs around 27°C (80°F). However, June tends to be slightly warmer, reaching a maximum of 34°C (93°F), while September peaks at 32°C (90°F). Precipitation is another notable difference; September is much wetter, with 368 mm (14.5 in) over 25 days, compared to June's 289 mm (11.4 in) over 21 days. Humidity levels are similar in both months, with September at 78% and June at 76%. For a more detailed view of June's weather, you can visit San Juan del Rio weather in June.
In comparing the weather of September and July, both months exhibit warm temperatures with averages around 27°C (81°F). However, July tends to be slightly warmer overall, with maximum temperatures reaching up to 34°C (93°F) compared to September's maximum of 32°C (90°F). While July experiences less precipitation at 172 mm (6.8 in) over 20 days, September sees a significant increase in rainfall, totaling 368 mm (14.5 in) across 25 days. Humidity remains consistent in both months at 78%. For more detailed information about July's weather, you can check San Juan del Rio weather in July.
In comparing the weather between August and September, we notice some subtle differences. Both months have similar minimum temperatures, with September starting at 22°C (72°F) and August slightly warmer at 22°C (72°F). The average temperatures are also quite close, with August averaging 27°C (81°F) and September at 27°C (80°F). However, August tends to be slightly hotter at its maximum of 33°C (91°F), compared to September's maximum of 32°C (90°F).
Precipitation levels are fairly comparable, with September receiving 368 mm (14.5 in) over 25 days, while August has slightly less rainfall at 357 mm (14.1 in) over 24 days. Humidity remains high in both months, with September at 78% and August at 79%. These conditions make both months quite similar in terms of overall climate, but August seems to offer slightly warmer conditions overall. For more detailed insights, you can check San Juan del Rio weather in August.
In September, the weather in San Juan del Rio is characterized by high humidity at 78% and significant rainfall, with an average precipitation of 368 mm over 25 days. Temperatures remain warm, with a minimum of 22°C (72°F) and a maximum of 32°C (90°F). In contrast, October sees a slight decrease in humidity to 75% and a reduction in total rainfall to 280 mm over 24 days, while temperatures remain consistent, ranging from 22°C (71°F) to 32°C (90°F). This shift in precipitation and humidity offers a somewhat drier atmosphere in October. For more detailed information, you can visit San Juan del Rio weather in October.
September and November exhibit notable differences in weather patterns. In September, temperatures range from a minimum of 22°C (72°F) to a maximum of 32°C (90°F), with an average of 27°C (80°F). This month is characterized by high precipitation, totaling 368 mm (14.5 in) spread across 25 days, and a humidity level of 78%. In contrast, November brings slightly cooler temperatures, with a minimum of 20°C (69°F) and a maximum of 33°C (91°F), averaging 26°C (80°F). Notably, November experiences significantly less rainfall, with just 54 mm (2.1 in) over 6 days, and a decrease in humidity to 72%. For a detailed overview of what to expect, check out San Juan del Rio weather in November.
In September, the weather is characterized by warmer temperatures, with an average of 27°C (80°F) and highs reaching up to 32°C (90°F). The humidity is notably high at 78%, and the region experiences considerable rainfall, with 368 mm (14.5 in) over 25 days. In contrast, December enjoys slightly cooler temperatures, averaging 26°C (78°F) and a maximum of 33°C (92°F), but with significantly less rainfall at just 12 mm (0.5 in) over only 2 days and lower humidity at 70%. This stark difference highlights the transition from the wet season in September to the much drier conditions typical of December. For more details on December weather, check out San Juan del Rio weather in December.
As September unfolds in San Juan del Rio, the weather exhibits a unique blend of warmth and humidity, setting it apart from the milder months prior. With temperatures reaching comfortable highs and a consistent average, the heat is often accompanied by significant rainfall, contributing to a humid atmosphere that envelops the region. This month marks a notable shift, as the frequent showers—occurring on nearly every other day—transform the landscape, enhancing the lushness that defines this beautiful area. For more insight into how San Juan del Rio's climate evolves throughout the year, visit San Juan del Rio Climate.