Last updated: April 22, 2025
In September, San Andres, Mexico, experiences a blend of warmth and moisture as summer transitions to fall. With temperatures reaching a maximum of 32°C (89°F) and averaging around 22°C (72°F), the weather remains pleasantly warm. However, the month is characterized by its high humidity, averaging 84%, and significant rainfall, with approximately 191 mm (7.5 in) of precipitation over about 23 days. Visitors can expect a tropical climate marked by occasional showers, making it essential to prepare for both sun and rain during this vibrant time of year.
September in San Andres, Mexico, marks a transition into slightly cooler and more comfortable temperatures as summer begins to wane. With minimums around 16°C (61°F) and maximums reaching 32°C (89°F), visitors can expect warm days tempered by balmy evenings. The average temperature holds steady at 22°C (72°F), reflecting a pleasant consistency throughout the month. This mild climate, characterized by its tropical warmth, is inviting for outdoor adventures, yet the subtle cooling hints at the approaching autumn, making it a delightful time to explore this vibrant destination. Whether lounging on the beach or indulging in local cuisine, experiencing September's weather is an ideal way to appreciate San Andres's charm.
September in San Andres, Mexico, marks a notable shift in the precipitation pattern, with 191 mm (7.5 in) of rain falling over 23 days. This surge continues the trend established in the preceding months of the rainy season, particularly July and August, which recorded 180 mm (7.1 in) and 165 mm (6.5 in) respectively. As the month progresses, the consistent rainfall underscores September's position as one of the wettest months of the year, setting the stage for a lush, vibrant landscape. While earlier months like April and March see almost negligible rain, September’s deluge offers a stark contrast, emphasizing the region's tropical climate and its seasonal peaks.
In San Andres, Mexico, September marks the peak of humidity levels, soaring to an impressive 84%. After a gradual increase throughout the summer months—where July and August reach 79% and 81%, respectively—September signals a notable transition before the dip in humidity that follows in October. This trend highlights the tropical climate, where humidity rises substantially during the warmer months, creating a lush environment ideal for growth and vibrancy. As the year progresses, the crispness of the autumn months emerges, bringing a refreshing change from the summer's humid grasp.
As September rolls into San Andres, Mexico, residents and visitors alike should be prepared for another month of extreme sun exposure, with the UV Index sitting at 13. This intensity means a burn time of just 10 minutes for those unprotected, so slathering on the sunscreen is a must! Continuing the trend from the warmer summer months, September maintains the high UV levels that characterize the region, emphasizing the importance of sun safety in all outdoor activities. With only a slight dip expected in October, those enjoying the sun in September should stay vigilant. For more detailed information, check out the full forecast at San Andres UV Index.
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September in San Andres, Mexico, offers a delightful balance of sunshine, boasting an impressive 271 hours of bright, golden rays. This month marks a subtle transition from the peak sunny days of summer; with May leading the year at 350 hours, the daylight starts to wane slightly as autumn approaches. While September enjoys fewer sunlit hours than the lively summer months of June and July, it still stands out with a considerable amount of sunshine compared to the early months of the year. As temperatures begin to cool, visitors can savor the lingering warmth, making it an ideal time to explore the stunning beaches and vibrant culture of this coastal paradise. Whether you're basking in the sun or enjoying warm evenings, September guarantees a beautiful experience in San Andres.
When considering the likelihood of sunny weather in September in San Andres, Mexico, it's important to note a significant dip in sunshine probability. With only an 18% chance of clear skies, September falls among the least favorable months for sun, comparable to the preceding months of July and August. This trend hints at a rainy period as the summer heat begins to wane. In contrast, the earlier months of the year, particularly March and February, boast much higher chances of sunshine, reaching 80% and 78% respectively. As the seasons shift, travelers seeking sun may find September less appealing, aligning their plans with the sunnier days that come before or after this transitional month.
In September, daylight in San Andrés, Mexico, is 12 hours, marking a transitional period as the days begin to shorten slightly from the peak summer months. The daylight duration has steadily increased from 11 hours in January and February to a high of 13 hours from May to August. This gradual shift reflects the region's warm climate, where summer days invite vibrant outdoor activities, while September still benefits from generous sunlight before the approach of fall. As the year progresses, September stands as a blend of lingering summer light and the gentle onset of the shorter days that characterizes the approaching autumn months.
As September arrives in San Andres, Mexico, the average wind speed dips to a gentle 1.1 m/s (3 mph), marking the year’s calmest month alongside July and August. This subtle shift in wind patterns reflects a broader trend of decreasing breezes as summer fades, with an overall peak in airy activity observed in the spring. With a steady breeze typically favored for outdoor pursuits, September's lighter winds invite a more leisurely pace, perfect for savoring the tranquil beauty of the coastal scenery. As autumn sets in, the winds may fluctuate slightly, but the lingering warmth and relaxed atmosphere create a unique charm that enhances the experience of this coastal paradise.
The weather in San Andres 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 Andres and find detailed weather information for every month.
September and January present quite contrasting weather patterns. September features a higher temperature range with minimums around 16°C (61°F) and maximums reaching up to 32°C (89°F), accompanied by significant rainfall of 191 mm (7.5 in) over 23 days, resulting in high humidity levels of 84%. In contrast, January sees much cooler temperatures, with minimums dropping to 3°C (37°F) but still averaging 17°C (63°F) and peaking at 31°C (88°F). Precipitation in January is notably lower, with only 14 mm (0.5 in) over just 2 days, and humidity at a more comfortable 64%. For more specifics on January weather, you can check this link: San Andres weather in January.
September and February present quite contrasting weather patterns. In September, temperatures range significantly, with a minimum of 16°C (61°F), an average of 22°C (72°F), and a maximum of 32°C (89°F). This month is characterized by high humidity at 84% and considerable precipitation, averaging 191 mm (7.5 in) spread over 23 days, making it a wet and humid time of year. In stark contrast, February offers a much cooler climate with a minimum temperature of 5°C (41°F) and an average of 18°C (65°F), while still reaching a maximum of 32°C (90°F). Precipitation is minimal in February, with only 19 mm (0.8 in) falling over just 2 days, leading to lower humidity of 57%. For more detailed insights into February's climate, check out San Andres weather in February.
September and March present contrasting weather conditions. In September, temperatures range from a minimum of 16°C (61°F) to a maximum of 32°C (89°F), with an average temperature of 22°C (72°F). This month is characterized by high humidity at 84% and significant rainfall, receiving 191 mm (7.5 in) across 23 days. Conversely, March boasts a broader temperature variation, with minimums at 7°C (44°F) and maximums reaching 35°C (95°F), while maintaining an average of 21°C (70°F). Notably, March experiences minimal precipitation, averaging just 2 mm (0.1 in) with no rainy days, leading to a much lower humidity level of 46%. For more detailed insights, you can check San Andres weather in March.
In comparing the weather of September and April, we observe significant differences in temperature and precipitation. September typically experiences milder temperatures with a minimum of 16°C (61°F) and a maximum of 32°C (89°F), while April can be hotter, showcasing a maximum of 36°C (96°F). Interestingly, both months share the same average temperature of 22°C (72°F). However, September is marked by high humidity at 84% and frequent rainfall, accumulating 191 mm (7.5 in) over 23 days. In contrast, April boasts a much drier climate with virtually no precipitation, recorded at just 1 mm over zero rainy days, and a notably lower humidity of 42%. For further details on April's weather conditions, you can visit San Andres weather in April.
In comparing the weather between September and May, we notice significant differences in temperature and precipitation. September boasts a milder average temperature of 22°C (72°F) with highs reaching up to 32°C (89°F), but it also has a high humidity level of 84% and substantial rainfall, totaling 191 mm over 23 days. In contrast, May features warmer conditions, with an average temperature of 24°C (75°F) and peak temperatures soaring to 38°C (100°F), yet it experiences far less rain, only 12 mm over just 2 days, and a more comfortable humidity level of 51%. For more details on the weather specifics, you can check out San Andres weather in May.
September and June exhibit notable differences in weather patterns. In September, temperatures range from a minimum of 16°C (61°F) to a high of 32°C (89°F), with an average of 22°C (72°F). This month also sees considerable rainfall, with 191 mm (7.5 in) spread over 23 days, accompanied by high humidity at 84%. In contrast, June typically features hotter temperatures, with a minimum of 12°C (54°F) and a maximum of 39°C (102°F), averaging 24°C (76°F). Precipitation is significantly lower in June, totaling 78 mm (3.1 in) over just 12 days and a humidity level of 74%. For further details on weather in June, check out San Andres weather in June.
In comparing the weather of September and July, both months exhibit similar average temperatures, with September showing a slight increase in maximum temperature at 32°C (89°F) compared to July's maximum of 33°C (92°F). However, September tends to be wetter, experiencing higher precipitation levels of 191 mm (7.5 in) over 23 days, while July has 180 mm (7.1 in) over 25 days. Additionally, September is slightly more humid, with levels reaching 84%, compared to July's 79%. For a more detailed look at the weather patterns during July, you can check San Andres weather in July.
In comparing the weather between August and September, we see that both months offer warm temperatures, with average highs reaching around 32°C (89°F) in September and slightly higher at 32°C (91°F) in August. September experiences a minimum temperature of 16°C (61°F), which is just a degree higher than August's minimum of 15°C (59°F). However, September is notably wetter, with 191 mm (7.5 in) of precipitation over 23 days, compared to August's 165 mm (6.5 in) over 25 days. Additionally, the humidity slightly increases in September to 84%, compared to 81% in August, making September feel a bit more humid overall. For more details, you can check San Andres weather in August.
September typically features warmer temperatures with a minimum of 16°C (61°F) and a maximum of 32°C (89°F), providing an average of 22°C (72°F). The month is also known for its significant rainfall, accumulating 191 mm (7.5 in) across 23 days, alongside high humidity levels at 84%. In contrast, October sees a slight cooling trend with minimum temperatures dropping to 11°C (53°F), while still reaching a maximum of 33°C (91°F) and maintaining an average of 22°C (71°F). Precipitation decreases notably to 74 mm (2.9 in), occurring over just 10 days, and humidity levels are more comfortable at 75%. For more details on October weather specifics, you can check this link: San Andres weather in October.
September and November present contrasting weather patterns. In September, temperatures range from a low of 16°C (61°F) to a high of 32°C (89°F), with an average of 22°C (72°F). This month also experiences considerable rainfall, totaling 191 mm (7.5 in) over 23 days, accompanied by high humidity at 84%. In contrast, November sees cooler temperatures, with a minimum of 8°C (47°F), an average of 20°C (68°F), and a maximum of 33°C (92°F). November is significantly drier, receiving only 15 mm (0.6 in) of precipitation across just 2 days and lower humidity at 71%. For more detailed insights on weather conditions, check out San Andres weather in November.
In September, the weather is noticeably warmer with average temperatures around 22°C (72°F), peaking at a maximum of 32°C (89°F). This month also experiences significant rainfall, with 191 mm (7.5 in) of precipitation occurring over 23 days, creating a humid atmosphere with humidity levels at 84%. In contrast, December sees much cooler temperatures, with an average of 17°C (63°F) and maximums reaching 30°C (86°F). Precipitation drops dramatically to just 17 mm (0.7 in) over only 2 days, and humidity decreases to 74%. For a more detailed look at December weather, visit San Andres weather in December.
September in San Andres stands out with its remarkably high humidity and frequent rain showers, setting it apart from the drier months. With an average temperature that is notably warm yet comfortable, the atmosphere feels lush and vibrant. The consistent precipitation transforms the landscape, providing a refreshing contrast to the typical sun-soaked days of summer. This month is a perfect time for those who enjoy the beauty of a tropical ambiance, rich in greenery and life. For a detailed look at what to expect throughout the year, visit San Andres Climate.