Last updated: April 22, 2025
September in San Carlos, Mexico, presents a temperate climate marked by a maximum temperature of 25°C (77°F) and an average of 15°C (60°F), making it a comfortable time for visitors. However, the month often sees considerable rainfall, with 176 mm (6.9 in) of precipitation spread over 22 days, resulting in a humidity level that hovers around 82%. This moisture-laden atmosphere not only rejuvenates the local landscapes but also provides a unique backdrop for outdoor activities. Visitors are advised to prepare for both sunny spells and refreshing showers while enjoying the beautiful natural scenery that September offers.
September in San Carlos, Mexico, offers a comfortable transition into fall, with temperatures that come alive under the warm sun. The month typically sees minimum temperatures around 5°C (41°F) and average highs peaking at 25°C (77°F), providing a pleasant balance perfect for outdoor activities. With an average of 15°C (60°F), the warmth lingers just enough to enjoy the scenic beauty of the area before the cooler months set in. This marks a gentle decline from the heat of summer, reflected in a slight drop from the minimum and maximum averages of August, yet still maintains a delightful, inviting climate for visitors and locals alike. Whether you're lounging by the beach or exploring the stunning landscapes, September's temperatures make for an ideal backdrop to savor the beauty of San Carlos.
September in San Carlos, Mexico, marks the peak of the rainy season, with an impressive 176 mm (6.9 in) of precipitation falling over 22 days. This trend reflects a significant increase from the preceding months, with August already showcasing considerable rainfall at 152 mm (6.0 in). As summer transitions to fall, the skies open up to deliver lush and nourishing rains, creating a striking contrast to the dry months of January and February, which see negligible precipitation. This seasonal downpour not only keeps the landscape vibrant but also sets the stage for the drier months ahead, as October and November drastically reduce to 95 mm (3.7 in) and 26 mm (1.0 in), respectively. Overall, September stands out as a pivotal month in the region's climatic cycle, emphasizing the vital role of these rains in supporting the local ecosystem.
In September, humidity levels in San Carlos, Mexico rise to an impressive 82%, marking a notable increase from the drier summer months. Following a steady decline from April's peak of 70%, the humidity begins to climb again, signaling the transition into the autumn season. This uptick reflects the region's tendency to experience more moisture as it approaches the end of the year, ultimately leading into October's peak humidity of 91%. This pattern showcases a consistent trend where the late summer and early fall bring heightened humidity, creating a lush and vibrant atmosphere that characterizes San Carlos during this time of year.
In September, the UV Index in San Carlos, Mexico remains high at 14, categorizing the exposure level as extreme, with a burn time of just 10 minutes. This trend of sustained high UV exposure, peaking in the summer months, highlights the importance of sun protection as the summer begins to transition into fall. While the UV Index slightly drops from its peak in April to July, it stays notably high through to October. As the year progresses, residents and visitors alike should stay vigilant, maintaining awareness of the risks associated with sun exposure. For more detailed information, please visit San Carlos UV Index.
UV Risk Categories
September in San Carlos, Mexico, continues the delightful trend of abundant sunshine, boasting 272 hours of radiant daylight. As the summer months wind down, the sunshine remains generous, though slightly less than the peak levels of May and July. This drop in sunshine hours reflects the transition into fall while still offering a warm embrace, especially when compared to the cooler months that follow. With clear skies and pleasant temperatures, September is an ideal time to enjoy the beautiful beaches and stunning landscapes of this coastal gem, ensuring that visitors can soak up the sun before the year starts to cool off. As the sun sets on summer, September holds its own, inviting everyone to bask in the last golden rays of the season.
When considering sunny weather in San Carlos, Mexico, September presents a particularly low chance, with only a 13% likelihood of clear skies. This marks a significant dip following the typically sunnier months of February (80%) and March (66%). The transition into the late summer months reveals a distinct decline in sunshine, highlighted by September's dismal forecast. As the rainy season approaches, the chances of experiencing overcast days increase, a trend that continues into October and November. Therefore, if you’re planning a trip during this time, it’s wise to prepare for cloudy conditions rather than relying on the bright, sunny days seen earlier in the year.
In San Carlos, Mexico, September marks a gentle transition in daylight duration, maintaining the balance seen throughout the month at 12 hours of daylight. As summer fades, the city basks in a steady glow that's characteristic of months prior. Starting from the early year with a consistent 11 hours in January and February, the days gradually lengthen to an enjoyable 13 hours in May, June, and July. August hints at a slight decline with 12 hours, setting the stage for September's serene daylight. This pattern continues into October, where daylight diminishes to 11 hours, foreshadowing the shorter days of winter. As such, September exemplifies the harmonious rhythm of changing seasons, captivating residents and visitors alike with its reliable yet dynamic cycling of light.
As September settles in San Carlos, the wind takes on a tranquil demeanor, with an average speed of 1.7 m/s (4 mph). This gentle breeze mirrors the subtle decline seen throughout the summer months, where wind speeds remain mostly consistent around 4 mph from August onward. Notably, after a brief peak in February at 2.3 m/s (5 mph), the overall wind activity during the warmer season appears to mellow out, creating a serene environment ideal for relaxation and outdoor enjoyment. As autumn approaches, the calm winds offer a perfect backdrop for soaking up the last rays of summer sunshine, inviting visitors and locals alike to savor the peaceful coastal atmosphere.
The weather in San Carlos 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 Carlos and find detailed weather information for every month.
In comparing the weather of September and January, it's clear that September offers milder temperatures with averages around 15°C (60°F), while January experiences colder conditions, especially at night, with minimum temperatures dropping to -1°C (31°F). Although both months can reach a maximum temperature of 25°C (77°F), September is characterized by significantly higher precipitation, averaging 176 mm (6.9 in) over 22 days, compared to January's scant 14 mm (0.5 in) over just 3 days. Furthermore, humidity levels are slightly higher in January at 84%, versus September's 82%, creating a different overall feel to the weather during these months. For a more detailed look at January weather, you can visit San Carlos weather in January.
When comparing the weather in September and February, significant differences emerge. September experiences a wider range of temperatures, with minimums around 5°C (41°F) and maximums reaching up to 25°C (77°F), averaging around 15°C (60°F). However, it also sees considerable precipitation, with approximately 176 mm (6.9 in) of rain over 22 days and high humidity at 82%. In contrast, February is typically cooler, with minimum temperatures of 1°C (34°F) and maximums soaring to 28°C (82°F), averaging 13°C (56°F). Notably, February is much drier, receiving only 8 mm (0.3 in) of rain over just 2 days and maintaining a slightly lower humidity level of 78%. For more specifics on February conditions, check out San Carlos weather in February.
September and March present distinct weather patterns that highlight the transition between seasons. In September, temperatures range from a minimum of 5°C (41°F) to a maximum of 25°C (77°F), with an average of 15°C (60°F). This month sees significant rainfall, with 176 mm (6.9 in) of precipitation over 22 days, contributing to a high humidity level of 82%. In contrast, March experiences slightly cooler temperatures with a minimum of 2°C (36°F) and a maximum of 29°C (84°F), averaging around 15°C (59°F). Rainfall is minimal, totaling only 25 mm (1.0 in) over just 6 days, and humidity is lower at 75%. For more detailed information on weather during this time, check out San Carlos weather in March.
September and April present distinct weather patterns that reflect the transition from summer to fall in the region. In September, temperatures range from a minimum of 5°C (41°F) to a maximum of 25°C (77°F), with an average of 15°C (60°F). This month is characterized by higher humidity at 82% and significant precipitation, totaling 176 mm (6.9 in) over 22 days. In contrast, April experiences slightly milder conditions, with temperatures ranging from 4°C (39°F) to 28°C (82°F) and an average of 16°C (61°F). The month sees less rainfall, with only 66 mm (2.6 in) occurring over 12 days, and a lower humidity level of 70%. For more details, you can check San Carlos weather in April.
September and May present contrasting weather characteristics. In September, temperatures range from a minimum of 5°C (41°F) to a maximum of 25°C (77°F), with an average of 15°C (60°F). This month is marked by significant rainfall, totaling 176 mm (6.9 in), occurring over 22 days, leading to higher humidity levels at 82%. In contrast, May boasts slightly warmer temperatures, with a minimum of 6°C (43°F), an average of 16°C (62°F), and a maximum of 27°C (81°F). The precipitation in May is considerably lower, measuring 92 mm (3.6 in) over 16 days, and features a reduced humidity level of 77%. For more detailed insights on May weather in the region, you can visit San Carlos weather in May.
In comparing the weather between September and June, we see some notable differences. September experiences slightly cooler temperatures, with a minimum of 5°C (41°F) compared to June's 6°C (43°F), and an average temperature of 15°C (60°F) versus June's 16°C (61°F). Both months have a maximum temperature only 1°C apart, with September reaching 25°C (77°F) and June slightly higher at 26°C (80°F). Precipitation is more prevalent in September, totaling 176 mm (6.9 in) over 22 days, compared to June's 161 mm (6.3 in) over the same number of days. Additionally, September has higher humidity at 82%, while June's humidity stands at 76%. For more details on June weather, you can visit San Carlos weather in June.
In comparing the weather of September and July, both months feature similar average temperatures, typically around 15°C (60°F), but September experiences a slightly cooler minimum temperature of 5°C (41°F) compared to July's 6°C (43°F). July tends to be marginally warmer with a maximum temperature of 26°C (80°F) versus September's 25°C (77°F). Additionally, September is characterized by significantly higher precipitation, with 176 mm (6.9 in) falling over 22 days, while July sees less rainfall at 118 mm (4.7 in) over 19 days. The humidity also differs, with September being more humid at 82%, compared to July's 68%. For more detailed information on July weather, you can check San Carlos weather in July.
In comparing the weather between August and September, we notice a slight dip in minimum temperatures, with September averaging a minimum of 5°C (41°F) compared to August's 7°C (44°F). While both months share a similar maximum temperature, September's average temperature remains consistent at 15°C (60°F), which mirrors August's average. However, September experiences noticeably more precipitation, totaling 176 mm (6.9 in) over 22 days, compared to August's 152 mm (6.0 in) over 20 days. Additionally, September has higher humidity levels at 82%, compared to August's 70%. For more specific insights into August weather, you can visit San Carlos weather in August.
September and October offer distinct weather patterns as autumn progresses. September sees a wider temperature range, with minimums of 5°C (41°F) and maximums reaching up to 25°C (77°F), contributing to an average of 15°C (60°F). The month is characterized by significant rainfall, totaling 176 mm (6.9 in) over 22 days, and a humidity level of 82%. In contrast, October brings slightly cooler temperatures, with a minimum of 2°C (35°F) and an average temperature of 14°C (58°F), while still allowing for a maximum of 26°C (79°F). Rainfall decreases considerably to 95 mm (3.7 in) and occurs over 17 days, with humidity rising to 91%. For a detailed look at conditions in October, visit San Carlos weather in October.
September typically experiences warmer temperatures, with average highs around 25°C (77°F) and an average of 15°C (60°F), while November is cooler, with an average high of 24°C (76°F) and an average low dropping to 0°C (33°F). Rainfall is considerably higher in September, receiving about 176 mm (6.9 in) over 22 days, compared to November, which has only 26 mm (1.0 in) spread over just 6 days. Additionally, humidity tends to be slightly higher in November at 89%, while September sees an average humidity of 82%. For more details on weather specifics in November, you can check San Carlos weather in November.
In September, the weather is relatively mild, with temperatures ranging from a minimum of 5°C (41°F) to a maximum of 25°C (77°F), and an average of 15°C (60°F). The month is quite rainy, with 176 mm (6.9 in) of precipitation spread across 22 days, resulting in a high humidity level of 82%. In contrast, December experiences colder conditions, with temperatures dropping to a minimum of -4°C (25°F) and an average of 12°C (53°F), peaking at 23°C (74°F). Notably, December is much drier, with only 5 mm (0.2 in) of precipitation on just one day and a humidity level of 88%. For more details on December's climate, you can visit San Carlos weather in December.
September in San Carlos is marked by noticeable shifts in weather compared to the preceding summer months. As temperatures begin to cool, with averages settling around a comfortable 15°C, the increased humidity at 82% contributes to a more muggy atmosphere. This month also brings a significant rise in precipitation, with frequent rainy days that transform the landscape and offer a refreshing break from the dry season. While the warmer days still reach 25°C, the nights can get quite cooler, dipping to 5°C. For a more detailed insight into how September fits into the broader picture of San Carlos weather, visit San Carlos Climate.