Last updated: April 22, 2025
Experience the charm of El Arco, Mexico in September, where the weather reveals a blend of warm days and cooler nights. With maximum temperatures reaching 29°C (85°F) and an average of 20°C (67°F), the climate invites outdoor exploration. However, be prepared for the occasional rain, as 193 mm (7.6 in) of precipitation is spread across 21 days, bringing an air of freshness to the surroundings. The overall humidity hovers at a high 81%, making it essential to stay hydrated while enjoying the stunning coastal views and vibrant local culture.
In September, temperatures in El Arco, Mexico start to show subtle shifts as the summer gives way to autumn. The minimum temperature settles around 10°C (51°F), which is relatively mild compared to the hotter months preceding it. Daily life unfolds under an average temperature of 20°C (67°F), providing a comfortable environment for outdoor activities. The maximum temperature remains steady at 29°C (85°F), echoing the warmth of August but slowly hinting at the cooling trend to come in October. This transitional month strikes a balance, offering pleasantly cool evenings and warm days, perfect for exploring the vibrant surroundings.
September marks a significant peak in precipitation for El Arco, Mexico, with an impressive 193 mm (7.6 in) of rainfall spread over 21 days. This surge follows the trend of increasing rainfall that begins in the warmer months, where the combined moisture from June, July, and August lays the groundwork for a lush September. The region experiences a dramatic shift as temperatures cool and days grow shorter, leading to frequent storms that contribute substantially to the overall annual total. As the monsoon season begins to wane, the average rainfall in September highlights the importance of this month in replenishing local water sources before the drier fall and winter months.
As September arrives in El Arco, Mexico, residents and visitors alike can expect a noticeable increase in humidity, with levels soaring to 81%. This marks a significant rise from the preceding months, contrasting with the drier air of March and April, where humidity dipped to 58%. Following the summer months, which maintain a relatively mild humidity around 67-68%, September initiates a trend towards even more moisture-laden air, setting the stage for the wetter fall months ahead. Notably, the humidity will continue to climb, peaking at 84% in November. This seasonal shift not only enhances the tropical feel of the region but also signals the onset of the lush landscapes that define El Arco during this time of year.
In September, El Arco, Mexico continues to experience a notably high UV Index of 13, categorizing the sun exposure as extreme. This trend of intense sun exposure persists from June through October, with burn time consistently set at a mere 10 minutes, making protection essential for outdoor activities. As the summer months transition into fall, the UV Index drops slightly but remains dangerously high, similar to the readings recorded in July and August. With both May and June setting the stage for such elevated levels, the region showcases an ongoing pattern of high UV exposure throughout this time of year. For those planning to enjoy the sun, it's crucial to stay informed and take appropriate precautions. For more details, check the El Arco UV Index.
UV Risk Categories
September brings a gentle shift in El Arco, Mexico, offering 293 hours of sunshine—a warm embrace as summer begins to fade. This month, while slightly lower than the peak summer highs in May and June, still bathes the region in ample sunlight, ideal for outdoor adventures and moments of relaxation. The trend from late spring through early fall shows a steady basking in over 300 hours of sunshine, with only a subtle dip as autumn approaches. As the days shorten and the heat of summer gives way to cooler breezes, September maintains the charm of sun-soaked days, making it a delightful time for visitors to enjoy the stunning landscapes and vibrant local culture.
In El Arco, Mexico, the likelihood of sunny weather experiences a noticeable decline in September, with a mere 20% chance of clear skies. This dip follows a series of months that, while inconsistent, generally boast higher chances of sunshine, peaking in February at 91%. As summer transitions into autumn, the sun's presence diminishes significantly, as illustrated by the rather bleak conditions of mid-year, particularly in June and July, where sunny days drop to an uninviting 18%. After September, the sun begins to make a slow comeback, reaching 39% in October, hinting at a gradual revival as the region moves into the more promising months of late fall and winter. This trend underscores the seasonal shifts in El Arco's climate, making September one of the cloudier months in the annual cycle.
In September, El Arco, Mexico enjoys a pleasant 12 hours of daylight, indicative of the gradual transition from the longer summer days to the shorter ones of fall. Following the peak of 13 hours in May through August, daylight begins to wane slightly, aligning with the onset of autumn. This month marks a balance, as it retains a full 12 hours, ensuring plenty of time for outdoor activities and exploration. As the year progresses, daylight dips towards 11 hours in October, emphasizing the cyclical nature of light in this vibrant region, where each season offers its unique charm.
In September at El Arco, Mexico, the average wind speed dips to 1.4 m/s (3 mph), marking one of the calmest months of the year. This slight decrease is part of a broader trend observed from mid-summer, where winds have gradually lessened since July, which recorded 1.4 m/s as well. The prevailing gentle breezes create a serene atmosphere, perfectly complementing the stunning coastal landscapes. As temperatures begin to cool slightly, September's tranquil winds contrast with the stronger currents of earlier months, signaling a shift towards the more tempered conditions of autumn.
The weather in El Arco 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 El Arco and find detailed weather information for every month.
In September, the weather is typically warmer, with average temperatures around 20°C (67°F), peaking at 29°C (85°F), and experiencing high humidity levels of 81%. This month also sees significant rainfall, with about 193 mm (7.6 in) of precipitation over 21 days, making it one of the wetter months. In contrast, January offers a cooler climate, with an average temperature of 15°C (60°F) and maximums reaching 30°C (86°F). Rainfall is minimal, with only about 5 mm (0.2 in) over just one day, and the air is slightly drier, with a humidity level of 74%. For more details on the January weather, visit El Arco weather in January.
September and February present notably different weather patterns. September experiences a warm average temperature of 20°C (67°F) with highs reaching up to 29°C (85°F), alongside significant precipitation of 193 mm (7.6 in) over 21 days, making it a rather humid month with an 81% humidity level. In contrast, February's weather features a cooler average of 18°C (64°F) and can reach a maximum of 31°C (89°F), but it is characterized by much lower precipitation at only 7 mm (0.3 in) across just 2 days and a humidity of 65%. For more details, you can check El Arco weather in February.
When comparing the weather between September and March, notable differences emerge. September experiences a comfortable range of temperatures from a minimum of 10°C (51°F) to a maximum of 29°C (85°F), with an average of 20°C (67°F). However, it also sees significant precipitation, totaling 193 mm (7.6 in) over 21 days, coupled with a high humidity level of 81%. In contrast, March boasts milder conditions, with temperatures ranging from a minimum of 6°C (44°F) to a maximum of 33°C (92°F), averaging around 21°C (69°F). March is much drier, receiving only 7 mm (0.3 in) of rain over just 2 days, and it has a noticeably lower humidity of 58%. For more detailed insights on the weather in this month, check out El Arco weather in March.
When comparing the weather in September and April, notable differences emerge. September experiences a cooler average temperature of 20°C (67°F), with a range from 10°C (51°F) to 29°C (85°F), but it is also the wettest month, receiving 193 mm (7.6 in) of rain over 21 days and a high humidity level of 81%. In contrast, April is warmer with an average temperature of 22°C (73°F), peaking at 35°C (95°F), and is significantly drier, averaging just 3 mm (0.1 in) of precipitation across only 1 day. The humidity in April is also lower at 58%. For more detailed information on April weather, you can refer to El Arco weather in April.
In comparing the weather between September and May, we see notable differences in temperature and precipitation. September typically features a cooler temperature range, with minimums around 10°C (51°F) and maximums reaching 29°C (85°F), accompanied by higher precipitation levels of 193 mm (7.6 in) over 21 days and high humidity at 81%. In contrast, May offers warmer conditions, with temperatures varying from a minimum of 12°C (53°F) to a sweltering maximum of 37°C (99°F). This month experiences much less rainfall, with only 33 mm (1.3 in) spread across just 5 days, and a lower humidity of 67%. For more detailed information, check out El Arco weather in May.
In September, the temperature ranges from a minimum of 10°C (51°F) to a maximum of 29°C (85°F), with an average of 20°C (67°F). This month tends to be quite rainy, as it experiences around 193 mm (7.6 in) of precipitation over 21 days, contributing to a higher humidity level of 81%. In contrast, June is warmer, with temperatures varying from a minimum of 13°C (55°F) to a maximum of 36°C (97°F) and an average of 22°C (72°F). With 166 mm (6.5 in) of rain over 17 days, June is slightly drier, resulting in a lower humidity level of 76%. For a more detailed look at the weather in June, you can check El Arco weather in June.
In comparing the weather of September and July, both months share similar maximum temperatures, reaching up to 29°C (85°F). However, September tends to be slightly cooler on average, with a minimum temperature of 10°C (51°F) compared to July's 12°C (54°F). Precipitation is notably higher in July, with 217 mm (8.6 in) over 23 days, while September sees 193 mm (7.6 in) across 21 days. Additionally, humidity levels are higher in September at 81%, compared to July's 67%. For more detailed insights, you can check El Arco weather in July.
September weather is characterized by slightly cooler minimum temperatures, averaging 10°C (51°F) compared to August's 13°C (55°F). Both months share the same maximum temperature of 29°C (85°F) and average temperature of 20°C (68°F); however, September experiences more precipitation, with 193 mm (7.6 in) falling over 21 days, in contrast to August's 188 mm (7.4 in) across 22 days. Additionally, humidity levels rise significantly in September to 81%, compared to 68% in August. For a comparative overview, you can visit El Arco weather in August.
In September, the weather is characterized by warmer temperatures, with a minimum of 10°C (51°F) and a max of 29°C (85°F), while experiencing significant rainfall of 193 mm (7.6 in) over 21 days. The high humidity at 81% also contributes to the feeling of warmth. In contrast, October sees a slight drop in minimum temperatures to 8°C (46°F) and a maximum of 31°C (87°F), but with much less precipitation, averaging only 65 mm (2.6 in) over just 10 days. The humidity slightly increases to 83%, creating a more comfortable atmosphere overall. For detailed weather specifics, visit El Arco weather in October.
In September, the weather is generally warmer, with daily temperatures ranging from a minimum of 10°C (51°F) to a maximum of 29°C (85°F) and an average temperature of 20°C (67°F). The month is also quite wet, featuring significant rainfall of 193 mm (7.6 in) spread over 21 days, accompanied by a high humidity level of 81%. In contrast, November sees cooler conditions, with temperatures dipping to a minimum of 4°C (39°F) and peaking at 31°C (87°F), while averaging around 17°C (63°F). Notably, November experiences much less precipitation, accumulating only 21 mm (0.8 in) across just 3 days, although humidity remains relatively high at 84%. To explore more about the climate during this period, visit El Arco weather in November.
September and December display contrasting weather patterns. In September, temperatures range from a minimum of 10°C (51°F) to a warm maximum of 29°C (85°F), with an average temperature of 20°C (67°F). This month also experiences significant rainfall, totaling 193 mm (7.6 in) across 21 days, resulting in high humidity levels of 81%. In stark contrast, December features much cooler temperatures, with a minimum of 2°C (35°F), an average of 15°C (60°F), and a maximum of 29°C (84°F). Remarkably, December sees almost no precipitation, with only 4 mm (0.2 in) of rain and 0 rainy days, while humidity remains steady at 81%. For more details about December weather, you can check El Arco weather in December.
September in El Arco stands out with its remarkably humid conditions, where the air is thick with moisture. Unlike the drier months of summer, this time of year sees a significant increase in precipitation, bringing 21 rainy days that contribute to the lush landscape. The temperatures remain mild, making it a contrast to the hotter summer months, with the average hovering around a comfortable 20°C. As the region transitions into fall, the combination of warmth and frequent rain creates a unique blend of weather that is both refreshing and rejuvenating. For a deeper insight into how September fits into the overall climate spectrum, be sure to check out El Arco Climate.