Last updated: August 21, 2025
September in San Andres, Colombia is characterized by mild temperatures and considerable rainfall. With a maximum of 23°C (74°F) and an average of 15°C (59°F), the weather remains comfortable, though nights can be cooler, dropping to a minimum of 7°C (45°F). This month witnesses significant precipitation, totaling 426 mm (16.8 in), and it rains on nearly every day, resulting in 30 days of rain. Coupled with a humidity level of 78%, the atmosphere feels lush and vibrant, making it a unique experience for visitors seeking tropical charm amidst the rain.
In September, San Andres, Colombia experiences mild and consistent temperatures, with minimums around 7°C (45°F) and maximums peaking at 23°C (74°F). The average temperature remains stable at 15°C (59°F), mirroring the conditions of the preceding months. This slight dip in minimum temperatures compared to August and July indicates a subtle transition as the region edges toward the end of the dry season. As the month progresses, visitors can enjoy comfortably warm days and cooler nights, making it an inviting time for exploration and outdoor activities in this vibrant island paradise.
In September, San Andres experiences significant rainfall, with a total precipitation of 426 mm (16.8 in) falling over 30 days. This marks a decline from the heavier downpours of May and June, which recorded over 540 mm. Nonetheless, September remains one of the wetter months of the year, contributing to the lush, vibrant landscapes that define the region. Following this peak, precipitation starts to taper off slightly into October, with 473 mm (18.6 in) anticipated, suggesting a gradual transition towards the drier months ahead. As the year progresses, the rainfall patterns highlight an intriguing rhythm, underlining the island's tropical climate and its ample sustenance for both flora and fauna.
In September, San Andres, Colombia, experiences a notable humidity level of 78%, continuing a trend of elevated moisture that peaks during the rainy months of May through August. Following the dry start to the year, where humidity dips as low as 45% in March, the island's environment shifts dramatically, enveloping it in lush tropical conditions. As October approaches, humidity levels rise further to 83%, suggesting an ongoing pattern of increased moisture as the region transitions fully into its wet season. This consistent humidity not only enhances the vibrant landscape but also underscores the island's characteristic tropical climate that many visitors find enchanting.
In September, San Andres, Colombia, continues to experience an extreme UV Index of 15, maintaining the trend seen throughout the summer months. This consistent measurement signifies that the sun's intensity remains high, resulting in a rapid burn time of just 10 minutes for unprotected skin. Across the year, the UV Index trends upward from January's formidable 14 to a peak of 18 in March and April, before stabilizing at 15 from June through October. As you plan your sunshine-filled activities, it’s essential to stay informed and protected against UV radiation. For more insights on UV exposure, check out the resource here: San Andres UV Index.
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September in San Andres, Colombia, offers a delightful embrace of sunshine, with 279 hours of radiant daylight illuminating the vibrant landscapes. This month stands out amidst the year’s fluctuations, showcasing a harmonious blend of warmth as it follows the sun-drenched days of August, which boast an impressive 298 hours. While September experiences a slight dip compared to the peak summer months, it remains noticeably brighter than the earlier spring and late fall periods. As the year transitions, September still holds its own, providing plenty of opportunities for beach activities and exploration while hinting at the cozy, lush ambiance to come in the later months. With sunshine hours steadily rising post-winter, San Andres continues to charm visitors seeking that perfect tropical getaway in every season.
September in San Andres, Colombia, presents a moderate chance of sunny weather, with about 15% likelihood of sunshine. While this is a slight increase compared to the notably dreary months of April and May, it remains significantly lower than the vibrant sun-filled days of January, which boasts a 37% chance of clear skies. Essentially, as the year progresses toward the end, September marks a transitional phase, hinting at more favorable conditions ahead in the following months of November and December, which enjoy 20% and 21% sun chances respectively. Travelers should prepare for a blend of sun and clouds, ensuring they can make the most of whatever radiant moments September may offer.
September in San Andres, Colombia, continues the trend of abundant sunshine with 12 hours of daylight, maintaining the length seen throughout the summer months. This consistent daylight duration not only enhances the island's vibrant atmosphere but also provides ample time for visitors to explore its stunning beaches and lush landscapes. As the year transitions toward October, daylight begins to taper off to 11 hours, signaling the approach of shorter days. Overall, September exemplifies the island's near-equatorial positioning, offering a delightful blend of sunlight and warmth that enriches the tropical experience.
As summer transitions to autumn in San Andres, Colombia, September maintains the gentle breeze characteristic of the region, with an average wind speed of 1.1 m/s (3 mph). This subtle shift mirrors the calm winds of the preceding months, creating a serene atmosphere ideal for leisurely beach days and tranquil sunset strolls. Interestingly, the wind speed remains consistent from June through September, offering visitors a refreshing touch of nature without overwhelming gusts, making it a perfect time for outdoor activities. With only a slight increase observed as the year wraps up, implying a gradual buildup towards more windier conditions in December, September stands out as a sweet spot for those looking to experience the laid-back charm of this coastal paradise.
Weather in San Andres varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in San Andres, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is characterized by a wider temperature range, with minimums dropping to 7°C (45°F) and maximums reaching 23°C (74°F), while January sees slightly cooler minimums at 4°C (39°F), but maintains the same maximum temperatures. September experiences a significant amount of precipitation, totaling 426 mm (16.8 in) over 30 days, compared to the much drier January, which records only 125 mm (4.9 in) across 20 days. Humidity levels also differ markedly, with September being more humid at 78%, whereas January boasts a drier atmosphere with 52% humidity. For more detailed insights into the weather patterns in January, refer to San Andres weather in January.
September and February present contrasting weather patterns, despite their similar average temperatures. In September, temperatures range from a cool 7°C (45°F) at night to a pleasant 23°C (74°F) during the day, with a notable average of 15°C (59°F). It is also a notably wet month, receiving 426 mm (16.8 in) of precipitation over 30 days and exhibiting high humidity levels at 78%. In contrast, February boasts a slightly warmer minimum temperature of 6°C (43°F) and a maximum similar to September at 24°C (75°F), maintaining the same average of 15°C (60°F). However, February is significantly drier with only 133 mm (5.2 in) of rainfall over 21 days and a much lower humidity of 47%. For more detailed insights into February weather, check out San Andres weather in February.
September and March exhibit some similarities in temperature, with both months averaging around 15°C (59°F) and featuring maximum temperatures of 23°C (73°F to 74°F). However, September is marked by significantly higher precipitation, totaling 426 mm (16.8 in) over 30 days, compared to March's 295 mm (11.6 in) over 29 days. Additionally, humidity levels in September are notably higher at 78%, while March enjoys a drier climate with humidity at just 45%. For a more detailed look at March weather, you can visit San Andres weather in March.
In both September and April, temperatures exhibit a similar range, with minimums around 7°C (45°F), averages of 15°C (59°F), and maximums reaching 23°C (74°F). However, the weather patterns differ significantly in terms of precipitation and humidity. September sees higher precipitation at 426 mm (16.8 in) over 30 days, resulting in increased humidity levels of 78%. In contrast, April experiences slightly more precipitation at 440 mm (17.3 in) over 28 days, but with a significantly lower humidity of 54%. This makes April feel less muggy despite the similar temperature profile. For a closer look at the specifics, visit San Andres weather in April.
In comparing the weather of September to that of May, we can observe some notable differences. September typically features a minimum temperature of 7°C (45°F) and a maximum temperature of 23°C (74°F), averaging around 15°C (59°F). In contrast, May presents slightly warmer conditions with minimum temperatures at 9°C (48°F) and maximum temperatures reaching 24°C (76°F), leading to an average of 16°C (60°F).
However, September is marked by significant rainfall, with a precipitation total of 426 mm (16.8 in) over 30 days, while May experiences even more rain, totaling 546 mm (21.5 in) across 31 days. The humidity levels are quite similar, with September registering at 78% and May at 81%. For a more detailed perspective on the weather conditions during this time, you can check San Andres weather in May.
In comparing the weather of September and June, we observe some notable differences. September features a slightly wider temperature range, with minimums averaging at 7°C (45°F) and maximums reaching 23°C (74°F), while June boasts a minimum of 8°C (47°F) and a maximum of 22°C (73°F). Both months are characterized by similar average temperatures of around 15°C (59°F) and 15°C (60°F), respectively. However, June experiences significantly higher precipitation, totaling 549 mm (21.6 in) compared to September's 426 mm (16.8 in), with both months receiving rain over 30 days. Additionally, June's humidity is notably higher at 88%, compared to 78% in September. For more detailed information, you can refer to San Andres weather in June.
In comparing the weather between September and July, we find that both months experience similar average temperatures, with September having a minimum of 7°C (45°F) and a maximum of 23°C (74°F), while July features min and max temperatures of 9°C (48°F) and 23°C (74°F) respectively. However, July tends to be slightly more humid at 88% compared to September's 78%. Precipitation is also more pronounced in July, with 493 mm (19.4 in) falling over 31 days, whereas September sees a total of 426 mm (16.8 in) spread over 30 days. For a more detailed look at July conditions, you can visit San Andres weather in July.
When comparing the weather in September and August, both months exhibit similar average temperatures, hovering around 15°C (59°F). However, September tends to experience slightly cooler nights with a minimum of 7°C (45°F) compared to August's minimum of 8°C (46°F). Precipitation levels are notably lower in September, with 426 mm (16.8 in) of rain, compared to August's 476 mm (18.7 in), indicating that September might feel a bit drier despite a high humidity level of 78%. For a more detailed look at August’s conditions, you can visit San Andres weather in August.
September and October weather show some notable similarities and differences. Both months have an average temperature of 15°C (59°F), but October sees a slight increase in minimum and maximum temperatures, with lows of 8°C (47°F) and highs of 24°C (75°F), compared to September's 7°C (45°F) and 23°C (74°F). However, October experiences increased precipitation, with 473 mm (18.6 in) of rain compared to September's 426 mm (16.8 in), and a rise in humidity from 78% to 83%. Overall, while temperatures remain quite stable, October tends to be wetter and more humid. For more details, check out San Andres weather in October.
In September, the weather features a slightly warmer range with average temperatures between 7°C (45°F) and 23°C (74°F), while November sees a minimal drop with temperatures ranging from 6°C (43°F) to 22°C (73°F). Although the average temperatures are quite similar, September experiences a significantly higher total precipitation of 426 mm (16.8 in) over 30 days, compared to November's 298 mm (11.7 in) over 28 days. Additionally, humidity levels are slightly higher in November at 83%, compared to September's 78%. For more detailed information, you can check out San Andres weather in November.
In September, the weather tends to be warmer, with average temperatures ranging from a minimum of 7°C (45°F) to a maximum of 23°C (74°F). However, it also experiences significantly higher rainfall, with 426 mm (16.8 in) of precipitation spread over 30 days, resulting in a humidity level of 78%. In contrast, December sees only a slight drop in temperature, with averages between 5°C (41°F) and 22°C (72°F). Rainfall is markedly reduced to 131 mm (5.2 in) over 23 days, leading to a lower humidity of 70%. For more detailed insights, you can check San Andres weather in December.
As September unfolds in San Andres, residents and visitors alike experience a notable shift in weather patterns. This month is characterized by cooler temperatures, with averages dipping significantly compared to the warmer summer months, providing a refreshing respite from the heat. However, the contrast in climate also brings increased rainfall, as San Andres faces nearly everyday precipitation, making it one of the wettest months of the year. With a high humidity level, September's weather can feel quite muggy, adding to the tropical feel of the island. For a deeper understanding of how the weather impacts your stay, explore more at San Andres Climate.