Last updated: April 22, 2025
In September, San Andres, Mexico, experiences a tropical climate characterized by warm temperatures and considerable rainfall. The maximum temperature can soar to 35°C (96°F), with an average of 29°C (84°F) and a minimum cooling down to 24°C (76°F). This month is marked by significant precipitation, totaling 253 mm (10.0 in), and experiencing rain on approximately 25 days. Additionally, the humidity level remains high at 78%, contributing to the lush, vibrant atmosphere of this coastal paradise. Visitors should prepare for both the heat and the frequent rains, making it an ideal time for those who enjoy the beauty of tropical weather.
In September, temperatures in San Andres, Mexico, maintain the warmth of summer, with minimums hovering around 24°C (76°F) and averages at a comfortable 29°C (84°F). The heat peaks with maximums reaching up to 35°C (96°F), offering plenty of sunshine for outdoor adventures. This month marks a seamless transition from the sweltering highs of July and August, where temperatures soared to 39°C (102°F). As September unfolds, the balmy weather remains ideal for beachgoers and those seeking vibrant local culture, while still hinting at the slightly cooler October temperatures just around the corner. Embrace this sweet spot in the climate as it invites relaxation and exploration against a backdrop of stunning coastal beauty.
September in San Andres, Mexico, marks the peak of the rainy season, with precipitation reaching an impressive 253 mm (10.0 in) over 25 days. This substantial rainfall continues the trend established in August, where the region experienced a dramatic increase in precipitation, totaling 252 mm (9.9 in). As the summer months progress, the frequency of rainy days rises sharply—from just a few in the early year to nearly every day by September. The weather shifts noticeably, with August and September combining to deliver over half of the annual rainfall, showcasing the region's transition to a lush, green landscape. Following these wet months, precipitation begins to taper off sharply in October, setting the stage for a much drier winter ahead.
In September, San Andres experiences a rhythm of humidity that echoes the vibrant pulse of the summer months, with levels stabilizing at 78%. This consistent humidity reflects a transition, as the town shifts from the peak of the wet season into the cusp of autumn. Notably, the humidity remains elevated during these late-summer months, aligning closely with July and August, which also recorded similar averages. As the year progresses, humidity levels gradually decline, signaling the onset of drier conditions in the months ahead. This trend highlights the tropical nature of San Andres, where the lingering warmth of summer continues to embrace the island, influencing both its climate and the experiences of its visitors.
In September, San Andres, Mexico, continues to experience an extreme UV Index of 12, similar to the peak levels seen in the summer months. As the burn time remains at a swift 10 minutes, it's essential for sunseekers to remain vigilant. This month’s UV intensity mirrors the previous months of July and August, maintaining the need for protective measures against harmful sun exposure. With such consistent levels, visitors should prioritize sunscreen application and seek shade during peak hours. As summer transitions into fall, awareness of the high UV levels remains crucial for safe outdoor activities. For more detailed UV insights, visit San Andres UV Index.
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As summer gently wanes into fall, September in San Andrés, Mexico offers a comfortable balance of sunshine, with a delightful 266 hours of sunlit days. This month, while slightly lower than the sun-soaked heights of May at 353 hours, still presents ample opportunities for outdoor adventures. Notably, the days gradually dim from the peak of April and May into the slightly cooler months ahead, yet September’s warmth lingers, inviting relaxation by the beach. So, whether you’re soaking up the sun or exploring local culture, this month embodies the essence of a quintessential tropical escape before the year winds down.
As September rolls into San Andres, Mexico, the sun doesn't shine as brightly as in the bustling summer months. With a 30% chance of sunny weather, this transitional period marks a notable dip in sunshine compared to the vibrant 80% in May and low percentages of 28% in July and 18% in August. Interestingly, the likelihood of clear skies begins to recover in October, rising back to 53%. This trend reflects a distinct pattern where autumn brings less reliable sunshine, making September a time when visitors might want to embrace the occasional cloud cover while still enjoying the unique charm of the region.
As September rolls in, San Andres, Mexico enjoys a pleasant 12 hours of daylight, which reflects a gradual transition from the summer months of June through August, where daylight peaked at 13 hours. This consistency in daylight duration marks a balance between the lingering warmth of summer and the approaching cooler autumn months. While the locals bask in the golden hours of late summer sun, they can anticipate a gentle reduction as October brings a slight dip to 11 hours. Overall, September in San Andres provides a harmonious blend of light and warmth, perfect for outdoor adventures and exploration.
In September, the wind in San Andres, Mexico, experiences a gentle ebb, with an average speed of just 1.5 m/s (3 mph), making it the calmest month of the year. This tranquil breeziness follows a gradual decline from the earlier summer months, where wind speeds hovered around 1.6 to 1.8 m/s. As the seasons shift, September's soft winds invite leisurely beach strolls and serene afternoons, contrasting with the slightly brisker gusts of spring and early summer. The overall trend for the year shows a fluctuation in wind speeds, but September’s lull marks a peaceful transition into the cooler months ahead.
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.
In September, the weather is notably warm with average temperatures hovering around 29°C (84°F) and highs reaching up to 35°C (96°F). The month is characterized by significant rainfall, with a total precipitation of 253 mm (10.0 in) spread over 25 days, resulting in a high humidity level of 78%. Conversely, January offers a much cooler climate, featuring average temperatures of 22°C (72°F) and highs of 33°C (92°F). Rainfall is minimal during this month, with only 20 mm (0.8 in) recorded over just 1 day, and humidity at a lower 71%. For a detailed look at the weather in January, you can check San Andres weather in January.
In comparing the weather of September and February, notable differences emerge. September boasts warmer temperatures, with a minimum of 24°C (76°F) and an average high of 35°C (96°F), creating a humid environment with 78% humidity and substantial rainfall of 253 mm (10.0 in) over 25 days. In contrast, February presents a cooler climate, featuring a minimum temperature of 14°C (58°F) and an average high of 33°C (92°F), along with much less precipitation, only 18 mm (0.7 in) falling on just one day and lower humidity at 69%. For a more detailed look at the weather in February, you can visit the following link: San Andres weather in February.
In September, the weather is quite warm and humid, with temperatures ranging from a minimum of 24°C (76°F) to a maximum of 35°C (96°F) and an average of 29°C (84°F). This month also sees significant rainfall, with 253 mm (10.0 in) of precipitation over approximately 25 days, contributing to a humidity level of 78%. In contrast, March offers much milder conditions, featuring temperatures that range from a minimum of 12°C (54°F) to a maximum of 33°C (91°F), with an average of 23°C (74°F). Remarkably, March experiences no rainfall at all, leading to a lower humidity level of 67%. For more details, check out San Andres weather in March.
When comparing the weather of September and April, significant differences become apparent. September experiences much higher temperatures, with a minimum of 24°C (76°F) and an average of 29°C (84°F), compared to April's cooler minimum of 15°C (60°F) and an average of 24°C (76°F). Additionally, September is marked by heavy rainfall, accumulating 253 mm (10.0 in) over 25 days, while April enjoys dry conditions with no recorded precipitation. Humidity levels are also higher in September at 78%, contrasting with April's 66%. For more detailed insights, visit San Andres weather in April.
In comparing the weather between September and May, September is notably warmer, with average temperatures reaching 29°C (84°F), compared to May's average of 27°C (80°F). Both months can see maximum temperatures soaring to 35°C (95°F), but September experiences significantly higher humidity levels at 78%, compared to May's more comfortable 69%. Additionally, September is characterized by a high level of precipitation, with 253 mm (10.0 in) falling over 25 days, while May is remarkably dry, with only 1 mm (0.0 in) of rain recorded on no days at all. For more detailed information, you can view San Andres weather in May.
When comparing the weather in September and June, both months share similar average temperatures of 29°C (84°F). However, September tends to be more humid, with a higher minimum temperature of 24°C (76°F) compared to June's 20°C (69°F). Additionally, September experiences significantly more rainfall, with 253 mm (10.0 in) over 25 days, whereas June sees only 56 mm (2.2 in) across 6 days. This pronounced difference in precipitation highlights September as a wetter month, despite both months maintaining a consistent humidity level of 78%. For a more detailed look at June weather, visit San Andres weather in June.
When comparing the weather of September and July, both months feature warm minimum temperatures of around 24°C (76°F). However, July tends to be slightly hotter on average, with an average temperature of 30°C (86°F) compared to September's 29°C (84°F). The maximum temperatures are notably higher in July, reaching 39°C (102°F), while September peaks at a more moderate 35°C (96°F). Additionally, September is much wetter, experiencing 253 mm (10.0 in) of precipitation over 25 days, contrasting with July's 119 mm (4.7 in) over 16 days. Humidity levels remain similar, with July at 79% and September at 78%. For more detailed insights, you can check out San Andres weather in July.
In comparing the weather of September and August, we observe some notable differences. Both months have similar minimum temperatures, averaging around 24°C (76°F) and 25°C (77°F) respectively, while September's average temperature is slightly lower at 29°C (84°F) compared to August's 29°C (85°F). However, August experiences higher maximum temperatures, peaking at 37°C (99°F), compared to September's maximum of 35°C (96°F). Precipitation levels are comparable, with September receiving 253 mm (10.0 in) over 25 days and August experiencing 252 mm (9.9 in) over 24 days. Humidity levels remain consistent at 78% for both months. For more detailed information on August weather, you can visit San Andres weather in August.
September and October exhibit similar average temperatures, with both months reaching a maximum of 35°C (96°F) and an average of 29°C (84°F). However, September is notably wetter, receiving 253 mm (10.0 in) of precipitation over 25 days, compared to October's 159 mm (6.3 in) over just 14 days. The humidity also sees a slight drop from 78% in September to 75% in October, contributing to a more comfortable atmosphere as the months transition. For a detailed look at October weather, check out San Andres weather in October.
In September, the weather is notably warmer with temperatures ranging from a minimum of 24°C (76°F) to a high of 35°C (96°F) and an average of 29°C (84°F). Additionally, September experiences a significant amount of rainfall, totaling 253 mm (10.0 in) over 25 rainy days, which contributes to a high humidity level of 78%. In contrast, November sees a drop in temperature, with minimums at 18°C (64°F) and an average of 26°C (79°F), yet still reaching the same maximum of 35°C (96°F). Precipitation is also much lower in November, with only 13 mm (0.5 in) of rain over just 2 days, and humidity decreases slightly to 74%. For more details on the conditions in November, you can visit San Andres weather in November.
In September, the weather is characterized by much warmer temperatures, with minimums around 24°C (76°F) and maximums reaching up to 35°C (96°F), averaging 29°C (84°F). This month also experiences significant rainfall, with 253 mm (10.0 in) of precipitation spread across 25 days, resulting in a high humidity level of 78%. In contrast, December offers a much cooler climate, with minimum temperatures dropping to 14°C (58°F) and an average of 23°C (74°F), peaking at 33°C (91°F). Rainfall in December is minimal, totaling just 11 mm (0.4 in) over only 1 day, and the humidity decreases slightly to 74%. For more details on the December climate, you can check out San Andres weather in December.
As September rolls around in San Andres, the weather takes on a more humid and unpredictable character compared to other months. With temperatures peaking around 35°C (96°F), the warmth is accompanied by frequent rainfall, totaling 253 mm across about 25 days. This month stands out for its elevated humidity of 78%, making the air feel heavier and more tropical. While other months may boast brighter skies and less precipitation, September offers a lush, vibrant landscape that breathes life into the region. For further insights into how the climate evolves throughout the year, check out San Andres Climate.