Last updated: April 22, 2025
In September, San Juan de los Lagos experiences a dynamic range of weather conditions. With maximum temperatures soaring to 32°C (91°F) and an average of 20°C (69°F), the days can be quite warm. However, the nights offer a cooler respite, often dipping to a minimum of 11°C (52°F). This month marks one of the wetter periods, with precipitation totaling 146 mm (5.8 in) over approximately 19 days, resulting in an humidity level of 81%. Visitors should be prepared for both sunshine and showers, making it a lively time to explore this charming Mexican town.
In September, temperatures in San Juan de los Lagos start to shift as the summer season begins its gradual exit. With minimum temperatures hovering around 11°C (52°F), the city enjoys pleasantly mild nights. The average daily temperature climbs to a comfortable 20°C (69°F), making the afternoons ideal for outdoor activities. As the month progresses, the maximum highs reach 32°C (91°F), providing warm, sunny days that invite exploration. This weather trend indicates a transition into autumn, where the days are still warm but the nights bring a refreshing coolness, perfect for those looking to experience the charm of this vibrant Mexican city.
In September, San Juan de los Lagos experiences a significant continuation of the rainy season, with precipitation totaling 146 mm (5.8 in), similar to the downpours of August. Rainfall is recorded over 19 days, indicating a persistent pattern of moisture that characterizes this transitional month. Following a summer of heavy rains, September maintains the trend of increased precipitation, but it also marks a slight tapering compared to the peak months of July and August. As the year progresses into the drier months, this surge culminates the wet season, setting the stage for a noteworthy shift to drier conditions in the upcoming months.
In September, San Juan de los Lagos experiences a notable uptick in humidity, reaching 81%, which is one of the highest levels recorded throughout the year. This increase follows a summer pattern, where humidity levels were consistently in the mid to high 60s, peaking in June. While October and November continue this trend with even higher humidity levels at 83% and 84% respectively, September stands out as a month of transition. As the wet season begins to take hold, residents can expect a more pronounced stickiness in the air, foreshadowing the moisture-laden months ahead as the year progresses into its final quarter.
In September, the UV Index in San Juan de los Lagos, Mexico remains at a notably high level of 13, categorizing exposure as extreme and necessitating protective measures within just 10 minutes of sun exposure. This month mirrors the trends established through the summer, with UV levels consistently hovering around the extreme threshold since February. The UV Index gradually dips from May's peak but remains a significant concern as the region transitions into fall. It’s essential to stay vigilant about sun protection throughout September, echoing a pattern that calls for awareness as the year progresses. For detailed insights about UV levels throughout the year, visit San Juan de los Lagos UV Index.
UV Risk Categories
September in San Juan de los Lagos enjoys a vibrant 295 hours of sunshine, marking a gentle decline from the summer peak yet still reflecting the region's radiant warmth. This month follows a high-energy summer, where May dazzles with 348 hours and July and August both bask in the glow of 327 and 325 hours, respectively. As the year turns toward fall, sunshine begins to wane, but the weather remains inviting, allowing residents and visitors to relish the lingering warmth of late summer before the lighter days of autumn set in. The sunshine hours in September, while less than the sun-soaked summer months, still provide ample opportunity for outdoor exploration and enjoyment in this charming Mexican town.
In September, the likelihood of experiencing sunny weather in San Juan de los Lagos, Mexico, significantly diminishes, with only a 26% chance of sunshine. This drop follows a summer marked by much lower probabilities of sunlight in June and July, where the chances plummet to 29% and 25%, respectively. As the region transitions into autumn, the sun’s presence remains sporadic, illustrating a notable contrast to the higher probabilities earlier in the year. For context, the months leading up to September—like March and February—boast sunlit opportunities as high as 79% and 87%. Thus, if your heart is set on basking in the sun, you might want to reconsider your plans during this month, as September typically ushers in cloudier skies and a more humid atmosphere.
In San Juan de los Lagos, Mexico, September marks a transition, where the daylight duration stabilizes at 12 hours, mirroring the peaks seen in March and April. This denotes a shift from the prolonged brightness of summer months—especially May through July, which enjoy up to 13 hours of daylight—gradually retreating as the year progresses. Following September, daylight begins to shorten, ushering in the cooler months of October and November, with each offering only 11 hours of sunshine. This cyclical pattern highlights how the region experiences a balance of light throughout the year, creating a rhythm that influences both daily life and seasonal activities.
In September, the winds in San Juan de los Lagos take a gentle turn, with an average speed of just 1.8 m/s (4 mph). This marks a notable decrease from the slightly breezier spring and summer months, where averages hovered around 3.0 m/s to 3.6 m/s. The calming winds reflect the transition into autumn, creating a serene atmosphere that invites outdoor activities and leisurely strolls. As the year progresses, the wind speeds tend to fluctuate, but September stands out with its tranquil air, making it a pleasant time to experience the beauty of this charming town.
The weather in San Juan de los Lagos 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 de los Lagos and find detailed weather information for every month.
September and January present contrasting weather conditions in San Juan de los Lagos. In September, temperatures range from a minimum of 11°C (52°F) to a maximum of 32°C (91°F), with an average of 20°C (69°F). This month experiences significant humidity at 81% and frequent rainfall, with a total of 146 mm (5.8 inches) spread over 19 days. In stark contrast, January boasts milder temperatures, with minimums of 1°C (34°F) and maximums reaching 29°C (85°F) while maintaining an average of 16°C (61°F). Additionally, January is much drier, with only 7 mm (0.3 inches) of precipitation over just 2 days and a humidity level of 74%. For more detailed information, visit San Juan de los Lagos weather in January.
September and February present distinct weather patterns. In September, temperatures range from a cool minimum of 11°C (52°F) to a warm maximum of 32°C (91°F), averaging around 20°C (69°F). The month experiences significant rainfall, with 146 mm (5.8 in) of precipitation over 19 days, coupled with high humidity levels of 81%. In contrast, February offers milder conditions, with minimum temperatures of 5°C (42°F) and maximums reaching 31°C (88°F), leading to an average of 18°C (65°F). Notably, February is much drier, receiving only 8 mm (0.3 in) of precipitation over just 1 day and featuring lower humidity at 65%. For more detailed information, you can check San Juan de los Lagos weather in February.
In comparing the weather of September and March, notable differences emerge. September features a temperature range with a minimum of 11°C (52°F) and a maximum of 32°C (91°F), accompanied by significant rainfall totaling 146 mm (5.8 in) over 19 days, resulting in high humidity levels of 81%. In contrast, March experiences milder temperatures, with a minimum of 6°C (43°F) and a maximum reaching 35°C (95°F), but it has minimal precipitation of just 4 mm (0.1 in) over a single day, leading to much lower humidity at 58%. For more detailed information on March weather in this region, visit San Juan de los Lagos weather in March.
September and April present contrasting weather patterns. September sees a broader temperature range with minimums around 11°C (52°F) and maximums reaching up to 32°C (91°F), while experiencing significant rainfall of 146 mm (5.8 in) spread over 19 days, contributing to high humidity levels of 81%. In contrast, April boasts a warmer average temperature of 23°C (74°F) and can peak at 35°C (95°F), but it remains remarkably dry with only 1 mm (0.0 in) of precipitation and no rainy days, resulting in a lower humidity of 58%. For more insights, visit San Juan de los Lagos weather in April.
In comparing the weather of September and May, it's clear that May tends to be warmer with average temperatures reaching 25°C (76°F) and a maximum of 37°C (99°F), while September's averages hover around 20°C (69°F) with a peak at 32°C (91°F). Additionally, May experiences significantly less precipitation, with only 24 mm (1.0 in) over about 5 days, compared to September's 146 mm (5.8 in) spread across 19 days, which contributes to a more humid environment with a humidity level of 81% in September versus 67% in May. For more detailed insights, you can visit San Juan de los Lagos weather in May.
In comparing the weather of September and June, September tends to be slightly cooler with a minimum temperature of 11°C (52°F) and an average of 20°C (69°F), while June starts off warmer, with a minimum of 14°C (57°F) and an average of 23°C (74°F). June can reach higher maximum temperatures of up to 37°C (99°F), making it more intense in heat compared to September’s peak of 32°C (91°F). Rainfall is more pronounced in September, with 146 mm (5.8 in) over 19 days, whereas June sees slightly less precipitation at 134 mm (5.3 in) over 14 days. The humidity in September is higher at 81%, compared to June's 76%. For more detailed information, you can check San Juan de los Lagos weather in June.
In comparing the weather between September and July, we see some notable differences. September generally features slightly cooler temperatures, with average highs of 32°C (91°F) compared to July's peak of 33°C (92°F), while the minimum temperatures are a bit lower, averaging 11°C (52°F) in September versus 13°C (55°F) in July. Additionally, September experiences higher rainfall, with 146 mm (5.8 in) over 19 days, compared to July's 183 mm (7.2 in) over 22 days. Humidity levels are also higher in September at 81%, as opposed to 67% in July, contributing to a more humid feel despite the similar temperature ranges. For more detailed information, you can check San Juan de los Lagos weather in July.
In comparing the weather between September and August, September experiences slightly cooler minimum temperatures, with a minimum of 11°C (52°F) compared to August's 13°C (55°F). The average temperature in September is also marginally lower at 20°C (69°F), while August holds an average of 21°C (70°F). Both months have similar maximum temperatures, with September peaking at 32°C (91°F) and August at 31°C (88°F). Precipitation levels remain consistent, with September receiving 146 mm (5.8 in) over 19 days and August recording 147 mm (5.8 in) over 18 days. However, September is notably more humid at 81%, compared to August's 68%. For more details on August weather, you can visit San Juan de los Lagos weather in August.
September experiences a broader temperature range with minimums hitting 11°C (52°F) and maximums soaring to 32°C (91°F), while October sees slightly cooler nights at a minimum of 8°C (46°F). Despite similar average temperatures around 20°C (68°F to 69°F), October tends to be drier with only 52 mm (2.0 in) of precipitation over 8 days compared to September's 146 mm (5.8 in) across 19 days. Humidity levels remain high in both months, with October slightly higher at 83% compared to September's 81%. For more detailed insights into the weather in October, check out San Juan de los Lagos weather in October.
September and November present contrasting weather patterns. In September, temperatures range from a minimum of 11°C (52°F) to a maximum of 32°C (91°F), with an average of 20°C (69°F). This month experiences significant rainfall, totaling 146 mm (5.8 in) over 19 days, while the humidity sits at a relatively high 81%. In contrast, November offers cooler temperatures, with a minimum of 4°C (39°F) and a maximum of 30°C (87°F), averaging around 18°C (65°F). Rainfall is minimal, with only 13 mm (0.5 in) occurring on just one day, and the humidity increases slightly to 84%. For more specific information about the weather during this month, you can refer to San Juan de los Lagos weather in November.
September and December present quite contrasting weather patterns. In September, temperatures range from a minimum of 11°C (52°F) to a maximum of 32°C (91°F), with an average temperature of 20°C (69°F). This month also sees significant rainfall, totaling 146 mm (5.8 in) over 19 days, creating a humid atmosphere with a humidity level of 81%.
In contrast, December brings much cooler temperatures, with a minimum of 1°C (34°F) and a maximum of 29°C (84°F), culminating in an average of 16°C (60°F). Remarkably, precipitation drops dramatically to just 5 mm (0.2 in) over only 1 day, while humidity remains steady at 81%. For more detailed insights, you can explore the specific conditions further at San Juan de los Lagos weather in December.
September in San Juan de los Lagos brings a notable shift in weather, marked by increased humidity and frequent rainfall, contributing to a lush, vibrant landscape. While temperatures can still peak at a warm 32°C, the overall climate is characterized by a more comfortable average, hovering around 20°C. This month stands out with significant precipitation, impacting the atmosphere and making it distinctively wetter compared to the drier summer months. For those curious about the year-round weather patterns in this enchanting region, additional details can be found in the San Juan de los Lagos Climate.