Last updated: April 22, 2025
September in San Blas, Mexico welcomes warm temperatures and a tropical atmosphere, with a maximum reaching 29°C (85°F) and an average of 19°C (67°F). As the month shifts, nighttime temperatures can dip to a refreshing 9°C (48°F). However, be prepared for moisture, as September sees an average precipitation of 117 mm (4.6 in), spread across approximately 14 days. The air hangs heavy with humidity at 81%, creating a lush landscape and vibrant sea life. This is a perfect time for those seeking warmth and the beauty of a rainy tropical paradise.
In September, San Blas, Mexico, welcomes a gentle shift in temperatures, offering a mild climate that entices travelers. With minimums around 9°C (48°F) and daytime averages hovering at 19°C (67°F), the weather provides a comfortable backdrop for outdoor adventures. The maximum temperature peaks at about 29°C (85°F), making it perfect for enjoying the sun while still allowing for cooler evenings. This month marks a subtle transition as temperatures begin to dip from the summer highs, providing a refreshing reprieve without the chill of winter. As the season gently fades into autumn, September in San Blas invites both relaxation and exploration in a pleasantly temperate environment.
September is a pivotal month for precipitation in San Blas, Mexico, showcasing a notable peak with 117 mm (4.6 in) of rainfall over 14 days. This marks a significant increase from the preceding months, particularly after a wet summer, where July recorded 110 mm (4.3 in). The transition into fall brings a substantial uptick in rainfall, which is indicative of the region's tropical climate. As the year progresses, September stands out not just for its volume but also as a harbinger of the rainy season’s intensity, foreshadowing the 40 mm (1.6 in) expected in October—a descent that hints at the upcoming dry spell. This pattern emphasizes the dramatic shifts in San Blas' weather, where summer's lush embrace softly yields to the drier months ahead.
In September, San Blas, Mexico, experiences a notable rise in humidity, reaching 81%—the highest this month has to offer. This increase reflects a general trend of rising humidity levels as the year progresses, especially towards the end of the rainy season. Following a dip in July and August, where humidity hovered around 64-67%, September marks a shift towards a more humid climate. This pattern continues into the fall months, with October and November showcasing even higher levels at 85% and 87%, respectively. San Blas residents and visitors certainly feel the sultry embrace of the tropical climate, which is characteristic of this vibrant coastal region.
In September, San Blas, Mexico experiences an extreme UV Index of 14, maintaining the trend of heightened sun exposure characteristic of the summer months. With a rapid burn time of just 10 minutes, it's crucial for visitors and locals alike to take precautions against harmful UV rays. This month follows a streak of similarly high indices from April to August, where values peaked at 15. As the year transitions into fall, the UV Index begins to gradually decline, dropping to 12 in October. Awareness of these trends is vital for anyone enjoying the beautiful sunshine in San Blas, making it important to stay protected. For more details, check out the San Blas UV Index.
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As summer fades into autumn, September in San Blas, Mexico offers a delightful blend of warmth and sunshine, with an impressive 297 hours of sunlight gracing the month. While this is a dip from the peak sunlight of May, it still stands strong compared to earlier months in the year, showcasing a consistent trend of abundant daylight. The diminishing hours as the year progresses reflect the transition into fall, but September remains a vibrant time to explore this coastal paradise. With an average of over 320 hours of sun in the preceding peak months, September maintains a lush, sun-kissed charm that beckons beachgoers and adventurers alike, perfectly wrapping up the summer season.
In San Blas, Mexico, the likelihood of sunny weather experiences a noticeable decline as summer transitions into early fall. September, in particular, boasts only a 27% chance of sunshine, making it one of the cloudier months of the year. This drop follows a gradual decrease from the sunnier months of May to August, where the chances of clear skies lingered between 31% and 69%. As autumn approaches, October offers a slight increase to 50%, hinting at a gradual return to better weather. Overall, if you're dreaming of sun-soaked days in September, you may want to reconsider and explore the vibrant landscapes and cultural richness that San Blas has to offer, regardless of the weather!
As the summer fades into autumn, September in San Blas, Mexico, offers a delightful balance of 12 hours of daylight, echoing the lengthy sunlit days of the summer months. From January's 10 hours of daylight to May's peak of 13 hours, the trend shows a gradual increase in sunlight as the year progresses. Following the summer's zenith in June through August, where daylight remains plentiful, September marks a gentle transition back towards shorter days as October approaches. This consistent daylight duration not only enhances the region's vibrant landscapes but also provides ample opportunity for outdoor exploration, making September a splendid time to experience the natural beauty of San Blas.
As the warm days of September roll in, the coastal breeze in San Blas, Mexico, begins to soften, with the average wind speed dipping to 2.3 m/s (5 mph). This marks the tail end of a late-summer lull, transitioning from the relatively brisk winds of earlier months like April and May, which both enjoyed average speeds around 3.5 m/s (8 mph). Following a consistent trend, July shows a noticeable decline in wind activity, hitting its lowest this month, before a slight uptick in October. The gentle September breeze, however, creates a serene atmosphere, perfect for beachgoers seeking a laid-back experience. As the month fades, a sense of calm blankets the shore, embodying the tranquil essence of San Blas.
The weather in San Blas 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 Blas and find detailed weather information for every month.
September and January present contrasting weather experiences. In September, temperatures range from a minimum of 9°C (48°F) to a maximum of 29°C (85°F), with an average of 19°C (67°F), making it a warm month. However, this warmth comes with significant precipitation of 117 mm (4.6 in) across about 14 days, coupled with high humidity at 81%. In stark contrast, January experiences cooler temperatures, with a minimum of -1°C (30°F) and a maximum of 26°C (80°F), averaging 13°C (56°F). Additionally, January is much drier, with only 9 mm (0.4 in) of precipitation over just 2 days and slightly lower humidity at 75%. For more insights on January weather, visit San Blas weather in January.
When comparing the weather in September and February, notable differences emerge. September is characterized by warmer temperatures, with a minimum of 9°C (48°F) and an average high of 29°C (85°F), while February offers cooler conditions, starting at a minimum of 1°C (34°F) and peaking at 30°C (86°F). Additionally, September experiences higher humidity levels at 81% and significant rainfall, totaling 117 mm (4.6 in) over 14 days. In contrast, February has a much drier climate, with only 8 mm (0.3 in) of precipitation on just one day and lower humidity at 69%. For more details about the specific climate conditions during this month, you can check San Blas weather in February.
When comparing the weather in September and March, we see notable differences in temperature and precipitation. September features a wider temperature range, with a minimum of 9°C (48°F) and a maximum of 29°C (85°F), while March offers slightly cooler nights with a minimum of 3°C (38°F) but can reach up to 33°C (91°F) during the day. Additionally, September is significantly wetter, receiving 117 mm (4.6 in) of precipitation over 14 days, compared to a mere 4 mm (0.2 in) of rain in March, which typically sees rainfall only once. Humidity levels are higher in September at 81%, while March maintains a more comfortable 65%. For those interested in the specifics of March weather in the region, you can check San Blas weather in March.
When comparing the weather in September and April, we see notable differences in temperature and precipitation. September experiences a wider temperature range, with minimums around 9°C (48°F) and maximums reaching up to 29°C (85°F), averaging 19°C (67°F). This month also brings significant rainfall, with about 117 mm (4.6 inches) over 14 days, contributing to a high humidity level of 81%. In contrast, April boasts milder temperatures, featuring minimums of 5°C (42°F) and maximums hitting 33°C (92°F), while averaging 20°C (69°F). It remains considerably drier with only 3 mm (0.1 inches) of precipitation over just 1 day and lower humidity at 64%. For a more detailed look at the April weather conditions, you can check out San Blas weather in April.
In comparing the weather between September and May, we see distinct differences. September experiences a wider temperature range, with minimums of 9°C (48°F) and highs reaching up to 29°C (85°F), along with a significant average humidity of 81% and considerable precipitation totaling 117 mm (4.6 in) over approximately 14 days. In contrast, May boasts higher average temperatures, with a minimum of 8°C (47°F) and maximums soaring to 35°C (95°F), along with a much drier climate, featuring only 21 mm (0.8 in) of rainfall over just 3 days and slightly lower humidity at 75%. For more specific details about the weather in May, you can explore San Blas weather in May.
In comparing the weather between June and September, it's evident that June tends to be warmer overall, with average temperatures reaching 21°C (71°F) and maximum highs soaring up to 35°C (95°F). In contrast, September's average temperature is slightly cooler at 19°C (67°F), with highs peaking at 29°C (85°F). Both months experience significant precipitation, with September totaling 117 mm (4.6 in) over 14 days, while June has slightly less at 98 mm (3.9 in) over 12 days. Additionally, September exhibits higher humidity levels at 81%, compared to June's 78%. For those interested in June weather specifics, you can find more information here: San Blas weather in June.
When comparing the weather in September to that of July, notable differences emerge. September tends to be cooler, with temperatures ranging from a minimum of 9°C (48°F) to a maximum of 29°C (85°F), while July experiences warmer conditions, with a minimum of 12°C (54°F) and highs reaching 31°C (89°F). Precipitation levels are slightly higher in September, accumulating 117 mm (4.6 in) over 14 days, compared to July's 110 mm (4.3 in) during the same number of days. Additionally, September has a higher humidity level of 81%, compared to July's 67%, making September feel more damp despite the cooler temperatures. For further insights into the July climate, you can check San Blas weather in July.
In comparing the weather of September and August, September tends to be cooler with a minimum temperature of 9°C (48°F) and an average of 19°C (67°F), while August typically experiences warmer conditions, with a minimum of 12°C (54°F) and an average of 21°C (69°F). August also boasts higher maximum temperatures, reaching up to 31°C (89°F) compared to September's peak of 29°C (85°F). Precipitation is greater in September, with 117 mm (4.6 in) falling over 14 days, contrasting with August's 79 mm (3.1 in) across just 10 days. Additionally, September has a higher humidity level at 81%, while August sits at a more comfortable 64%. For a closer look at weather patterns, visit San Blas weather in August.
September and October display noticeable contrasts in weather patterns. September tends to be warmer, with minimum temperatures averaging 9°C (48°F) and maximum highs reaching 29°C (85°F), while October sees a slight dip in minimum temperatures to 5°C (40°F). Both months have similar maximum temperatures; however, October's average temperature is a bit cooler at 18°C (65°F). Precipitation significantly decreases in October, with only 40 mm (1.6 in) over 6 days compared to September's 117 mm (4.6 in) over 14 days. Humidity remains relatively high in both months, reaching 81% in September and 85% in October. For more specific insights, you can check San Blas weather in October.
September and November exhibit distinct differences in weather conditions. September experiences a wider range of temperatures, with a minimum of 9°C (48°F) and a maximum of 29°C (85°F), while November sees cooler nights with a minimum of 0°C (32°F) and a slightly warmer maximum of 28°C (84°F). Additionally, September is significantly wetter, receiving 117 mm (4.6 in) of precipitation over 14 days, compared to November's much drier conditions with only 12 mm (0.5 in) over just 1 day. Humidity levels remain relatively high in both months, with November slightly higher at 87%, compared to September's 81%. For more detailed insights on November weather, you can visit San Blas weather in November.
September and December present quite a contrast in weather conditions. In September, temperatures range from a minimum of 9°C (48°F) to a maximum of 29°C (85°F), with an average of 19°C (67°F). This month also experiences significant rainfall, totaling 117 mm (4.6 in) over approximately 14 days, accompanied by a humidity level of 81%. In contrast, December sees much cooler temperatures, with lows dropping to -6°C (22°F) and highs reaching up to 28°C (82°F), averaging around 13°C (56°F). Notably, December has minimal precipitation, with just 8 mm (0.3 in) occurring over only one day, and slightly higher humidity at 87%. For more details on the specific weather conditions during this month, you can check San Blas weather in December.
September in San Blas brings a distinct shift in weather compared to other months, characterized by its moderate temperatures and increased humidity. With an average of 19°C (67°F) and peak highs reaching 29°C (85°F), the climate is comfortably warm, yet cooler evenings can dip to 9°C (48°F). This month also sees a notable rise in precipitation, with about 117 mm (4.6 in) of rain spread across 14 days, making it one of the wetter months of the year. The lushness brought on by these showers contrasts beautifully with the drier, hotter summer months, enhancing the region's vibrant scenery. For a deeper understanding of the area's climate patterns, check out San Blas Climate.