Last updated: April 22, 2025
Experience the vibrant September weather of Boca del Río, Mexico, where temperatures can soar up to a sizzling 37°C (99°F), averaging a comfortable 28°C (83°F) during the day. As the sun climbs high, the nights offer a mild reprieve with temperatures dipping to a cozy 23°C (74°F). However, prepare for a touch of unpredictability, as this month brings approximately 184 mm (7.3 in) of rainfall across 18 days, contributing to a muggy 84% humidity that wraps around the coastal charm. Whether you're soaking up the sun or dancing in the rain, September in Boca del Río showcases the region's thrilling tropical allure.
In Boca del Rio, Mexico, September marks a transition into slightly cooler weather, with temperatures reflecting the last throes of summer. The month sees a minimum temperature of 23°C (74°F) with an average of 28°C (83°F) and a maximum reaching 37°C (99°F). This represents a slight dip in the highs compared to the preceding months, making it a comfortable time for both exploration and outdoor activities. While the evenings begin to cool down, the high humidity typical of the region continues, ensuring that the air remains warm and inviting. Overall, September's weather remains inviting, perfect for enjoying the beautiful coastal scenery and vibrant local culture as the summer season gradually gives way to fall.
September in Boca del Rio, Mexico, marks a significant peak in precipitation, delivering 184 mm (7.3 in) of rain over 18 days, showcasing the intensity of the rainy season. This month follows a pattern of increasing rainfall that begins in May and escalates dramatically in June. While August contributes a substantial 178 mm (7.0 in), September solidifies its status as one of the wettest months of the year, just slightly outpacing its predecessor. The trend is clear: as summer transitions into fall, the region experiences a surge in rainfall, leading into a slightly drier October with 110 mm (4.3 in) expected. This cycle not only revitalizes the landscapes but also highlights the region's climatic rhythm, underscoring the importance of these seasonal shifts for local ecosystems and agriculture.
As summer transitions to fall in Boca del Rio, September brings a notable shift in humidity, rising back to 84%, similar to January's levels. This increase follows a consistent trend where humidity dips from its peak in the early months of the year, reaching a low of 67% in April, before gradually climbing again during the summer months. July and August see humidity levels hovering around 76% and 80% respectively, establishing a humid atmosphere that culminates in September just before the onset of the wetter months ahead. Following September, humidity escalates sharply in October, 89%, and remains high through the end of the year, creating a familiar humidity cycle that characterizes Boca del Rio's tropical climate.
In Boca del Rio, Mexico, the UV Index remains strikingly high throughout the year, especially in the summer months. September stands out with a UV Index of 13, categorized as extreme, which means a mere 10 minutes of sun exposure can lead to skin damage. This trend of elevated UV levels persists from May through October, peaking in June and July with an index of 14. As the year progresses, the intensity slightly diminishes, with less extreme values returning in November and December. The consistent presence of high UV levels highlights the importance of sun protection, making it crucial for residents and visitors alike to stay vigilant. For more detailed insights into sun exposure in this sunny locale, check out the Boca del Rio UV Index.
UV Risk Categories
As summer winds down, September in Boca del Rio, Mexico offers a delightful 290 hours of sunshine, continuing the trend of ample sunlight from the previous month. Although slightly less than the peak of 328 hours in July, September still boasts considerable brightness, making it an ideal time for outdoor activities and beach visits. The month seamlessly transitions into fall, with October promising 302 hours of sunshine, indicating that the favorable weather will continue. This pattern highlights the region's inviting climate, perfect for those looking to bask in the sun even as the seasons change.
In Boca del Rio, Mexico, September marks a significant dip in the chance of sunny weather, with only a 17% likelihood of sunshine. This stark contrast to the sunnier months earlier in the year, such as February and March, which boast over 80% sun probability, indicates a seasonal shift as summer transitions to fall. Following a trend of diminishing sunshine from March through the summer months, September continues this pattern, representing one of the cloudiest periods of the year. The weather begins to brighten again in October, hinting at the return of more favorable conditions, but for those planning a visit in September, it’s wise to prepare for a higher chance of rain and overcast skies.
In September, Boca del Rio enjoys 12 hours of daylight, maintaining the trend established over the summer months. As the year progresses from the long days of June with 13 hours of sunshine, daylight gradually tapers off to 12 hours in July and August, before holding steady into September. This consistent daylight duration hints at a seamless transition into the autumn months, where daylight begins to diminish slowly, dropping to 11 hours by October. Overall, September acts as a bridge between the sun-drenched summer and the shorter days of fall, making it a delightful time to explore the coastal beauty of Boca del Rio.
As summer transitions into autumn, September in Boca del Rio, Mexico, is characterized by gentle breezes, with an average wind speed of 2.5 m/s (6 mph). This marks a slight decrease from the calmer winds of August, reflecting a pattern of diminishing airflow as the region nears the end of the rainy season. In the broader scope, the winds remain relatively light during the summer months, with June showing the slowest speeds at 1.8 m/s (4 mph). However, by October, there's a noticeable uptick, suggesting a shift towards more invigorating winds as the temperatures cool down. Overall, the September winds offer a serene backdrop, perfect for enjoying the coastal beauty of this vibrant locale before the seasonal shifts bring about more robust gusts in the following months.
The weather in Boca 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 Boca del Rio and find detailed weather information for every month.
In September, the weather is markedly warmer and wetter compared to January, with average temperatures ranging from a minimum of 23°C (74°F) to a maximum of 37°C (99°F) and significant precipitation of 184 mm (7.3 in) over 18 days. Humidity remains high at 84%, contributing to the muggy conditions that characterize this month. In contrast, January features cooler temperatures, with averages from 16°C (61°F) to 35°C (95°F), and it is notably dry, receiving just 2 mm (0.1 in) of rainfall across the entire month. Despite the coolness, the humidity level remains consistent at 84%. For more detailed insights, visit Boca del Rio weather in January.
September and February present notably different weather patterns. In September, temperatures range from a minimum of 23°C (74°F) to a maximum of 37°C (99°F), with an average of 28°C (83°F) and significant rainfall totaling 184 mm (7.3 in) over 18 days. The humidity is quite high at 84%, creating a muggy atmosphere.
In contrast, February sees cooler temperatures, with a minimum of 16°C (62°F), an average of 26°C (79°F), and a maximum of 36°C (97°F). Rain is scarce, with only 5 mm (0.2 in) of precipitation recorded over just 1 day, and the humidity remains lower at 80%. For more details on February weather, visit Boca del Rio weather in February.
In comparing the weather between September and March, we notice significant differences in both temperature and precipitation. September boasts a minimum temperature of 23°C (74°F) and an average temperature of 28°C (83°F), while March has slightly cooler temperatures, with a minimum of 17°C (63°F) and an average of 27°C (82°F). Both months share a maximum temperature of 37°C (99°F), but September is marked by high precipitation, totaling 184 mm (7.3 in) across 18 days, leading to a humidity level of 84%. In stark contrast, March experiences minimal rainfall, with only 1 mm (0.1 in) and zero rainy days, resulting in a significantly lower humidity of 73%. For more detailed information, visit Boca del Rio weather in March.
When comparing the weather in September and April, both months exhibit warm average temperatures around 28°C (82°F), but April tends to be slightly hotter, with maximum temperatures reaching up to 39°C (102°F) compared to September's 37°C (99°F). Humidity levels are also notably different; September has a high humidity of 84%, making it feel more oppressive, whereas April boasts a lower humidity of 67%, resulting in a more comfortable atmosphere. Additionally, rainfall is significantly less in April, with only 8 mm (0.3 in) of precipitation over just 2 days, contrasting sharply with September’s 184 mm (7.3 in) that falls over 18 days. For a closer look at April’s weather specifics, you can check Boca del Rio weather in April.
When comparing the weather in September and May, we can see distinct differences in temperature and precipitation. In September, temperatures range from a minimum of 23°C (74°F) to a maximum of 37°C (99°F), with an average of around 28°C (83°F). This month is characterized by significantly higher precipitation, with 184 mm (7.3 in) falling over 18 days, resulting in an elevated humidity level of 84%. In contrast, May features slightly milder conditions, with temperatures ranging from a minimum of 21°C (71°F) to a maximum of 39°C (102°F) and an average of 29°C (85°F). Precipitation is much lower at 77 mm (3.0 in) over just 10 days, and the humidity is more manageable at 72%. For a closer look at the weather specifics for May, you can check Boca del Rio weather in May.
When comparing the weather in September and June, both months feature similar average temperatures, hovering around 28°C (83°F). However, June tends to be slightly warmer, with maximum temperatures reaching up to 38°C (100°F), compared to September's peak of 37°C (99°F). Precipitation is notably higher in June, with an average of 307 mm (12.1 in) over 20 days of rain, while September experiences 184 mm (7.3 in) across 18 rainy days. Additionally, June has a lower humidity level at 73%, whereas September is more humid, with levels reaching 84%. For more detailed information, you can check Boca del Rio weather in June.
In comparing the weather between July and September, both months experience similar minimum temperatures, with July averaging slightly warmer at 29°C (85°F) compared to September's average of 28°C (83°F). However, September sees a notable increase in precipitation, receiving 184 mm (7.3 in) over 18 days, whereas July has only 81 mm (3.2 in) across 12 days. Additionally, September is characterized by higher humidity levels at 84%, compared to July's 76%. For those interested in more specific conditions during July, you can find further details here: Boca del Rio weather in July.
In comparing the weather between September and August, it is evident that both months share similar minimum temperatures, averaging around 23°C (73-74°F). However, September tends to be slightly cooler in terms of average temperature, with an average of 28°C (83°F) compared to August's warmer 29°C (84°F). Notably, August experiences a higher maximum temperature, reaching up to 39°C (102°F), while September peaks at 37°C (99°F). Precipitation levels are similar, with September recording 184 mm (7.3 in) over 18 days, slightly more than August's 178 mm (7.0 in) over 16 days. Additionally, September has a higher humidity level at 84%, compared to August's 80%. For more detailed insights, please check out Boca del Rio weather in August.
In September, temperatures range from a minimum of 23°C (74°F) to a maximum of 37°C (99°F), with an average of 28°C (83°F). The month sees considerable precipitation, totaling 184 mm (7.3 in) over 18 days, resulting in high humidity levels averaging 84%. In contrast, October experiences slightly milder temperatures, with a minimum of 21°C (71°F) and a maximum of 37°C (100°F), while the average remains the same at 28°C (82°F). Rainfall decreases significantly to 110 mm (4.3 in) over just 10 days, accompanied by a slight rise in humidity to 89%. For more detailed insights, you can check Boca del Rio weather in October.
In comparing the weather between September and November, September tends to be significantly warmer and wetter. With temperatures ranging from a minimum of 23°C (74°F) to a maximum of 37°C (99°F), it averages around 28°C (83°F). Additionally, the month experiences considerable rainfall, totaling 184 mm (7.3 in) over 18 days, and maintains a high humidity level of 84%. In contrast, November sees slightly cooler temperatures, with a minimum of 18°C (64°F) and a maximum of 36°C (97°F), averaging 27°C (81°F). Rainfall drops drastically to just 7 mm (0.3 in) over a mere 1 day, and humidity increases slightly to 88%. For a closer look at November weather specifics, you can visit Boca del Rio weather in November.
In September, the weather is characterized by higher temperatures, with a minimum of 23°C (74°F) and an average of 28°C (83°F), peaking at 37°C (99°F). This month also sees significant rainfall, with 184 mm (7.3 in) of precipitation over 18 days, contributing to a humidity level of 84%. In contrast, December experiences milder temperatures, with a minimum of 16°C (61°F) and an average of 26°C (78°F), while the max temperature reaches 35°C (96°F). The precipitation drops drastically to just 6 mm (0.3 in) over only 1 day, and humidity increases slightly to 88%. For more information on December weather, check out Boca del Rio weather in December.
September in Boca del Rio brings a distinct shift in weather, characterized by significantly higher humidity levels and frequent rainfall compared to the preceding summer months. With average temperatures settling around a warm 28°C, and maximum highs reaching up to 37°C, the heat can feel quite intense, especially when combined with an average of 18 rainy days throughout the month. This increased precipitation, totaling 184 mm, contributes to a lush landscape, but it also means that visitors should be prepared for sudden showers and higher moisture in the air. As the month unfolds, the tropical atmosphere sets the stage for the transition into the more temperate autumn period. For more detailed insights, check out the complete Boca del Rio Climate.