Last updated: August 21, 2025
September in San Andres, Colombia brings a tropical climate characterized by warm temperatures and significant rainfall. With maximum temperatures reaching up to 29°C (85°F) and an average of 28°C (82°F), the weather remains comfortably warm throughout the month. However, visitors should prepare for high humidity levels at around 80%, contributing to the sultry atmosphere. Rainfall is quite frequent, with 188 mm (7.4 in) of precipitation spread over approximately 24 days, making this a month where afternoon showers are common. Despite the wet weather, the island retains its charm, inviting travelers to experience its lush landscapes and vibrant culture.
In September, San Andres, Colombia, experiences a warm tropical climate that exemplifies its enchanting island allure. With minimum temperatures around 25°C (78°F) and averages rising to 28°C (82°F), the island boasts a comforting warmth, perfect for sun-seekers. The temperature peaks at about 29°C (85°F), creating an inviting atmosphere for outdoor activities and beach relaxation. As the transition from summer to fall occurs, September maintains a consistent warmth similar to the preceding months, with only slight variations in temperature. This month embraces the island’s renowned pleasant weather, making it an ideal time for visitors to explore the stunning beaches and vibrant culture of San Andres.
September in San Andres, Colombia, brings a significant shift in precipitation, accumulating approximately 188 mm (7.4 in) of rain over 24 days. This marks a noticeable decrease from the consecutive months of June, July, and August, each recording around 231 mm (9.1 in), yet it still underscores September's place in the wet season. The rainfall hints at the departure from the height of the rainy period, transitioning towards a rainy October that anticipates 268 mm (10.5 in) across a similar number of days. As September weaves together both heavy rainfall and relatively fewer dry days, it showcases the island's lush beauty, setting the stage for the greenery that characterizes the subsequent months.
September in San Andres, Colombia, witnesses a relative drop in humidity to 80%, which aligns closely with the levels recorded in January and August. This slight decrease marks a subtle transition after the peak humidity months of June and July, where averages soared to 87% and 86% respectively. Overall, the humidity trends reveal a consistent pattern throughout the year, with a gradual rise towards the mid-year, peaking in late summer, and a gentle decline as the year progresses. Such conditions create a tropical atmosphere, reinforcing the island's unique charm while still providing refreshing breezes that are characteristic of this coastal paradise.
In September, the UV Index in San Andres, Colombia remains consistently high at 13, maintaining the extreme exposure category that has characterized much of the year. This trend signifies that sun protection is crucial, as the recommended burn time is still a brisk 10 minutes. However, it's worth noting that this index reflects a slight stabilization compared to the peak of 14 in April, indicating a gradual transition as the year progresses. Travelers and locals alike should continue to prioritize sun safety while enjoying the vibrant sun-soaked days this island paradise has to offer. Stay informed about UV intensity changes throughout the year by visiting San Andres UV Index.
UV Risk Categories
As September unfolds in San Andres, Colombia, the island basks in an impressive 309 hours of sunshine, continuing the region's trend of abundant sunlight throughout the year. Following the summer months, which showcased vibrant July and August with 310 and 303 hours respectively, September maintains this brightness while slightly dipping from the peak hours seen in March and April. This consistent pattern of sunny days not only enriches the island's natural beauty but also enhances its appeal as a destination for sun-seekers looking to bask in warm, tropical rays as the year begins to transition into the cooler months ahead.
September in San Andres, Colombia, features a notably lower chance of sunshine, with only a 28% likelihood of clear skies. This trend follows a summer characterized by decreasing sunshine, as August sees a mere 23% chance, dropping further into September. The diminishing odds of sunny weather continue into the autumn months, suggesting that travelers should be prepared for more cloud cover and potential rain during their visit. In contrast, the earlier months of the year, such as February with a 72% chance, offer significantly brighter prospects, showcasing a distinct seasonal variation in the island's weather patterns.
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 September arrives in San Andres, Colombia, the winds begin to gently ease, bringing the average wind speed down to 5.1 m/s (11 mph). This marks a noticeable dip from the vibrant breezes of the summer months, where July and August enjoyed average speeds of 7.5 m/s (17 mph) and 5.6 m/s (13 mph), respectively. Following the higher winds of early summer, September's calmer conditions signal a transitional phase, paving the way for a more tranquil atmosphere before the winds gradually strengthen again in November. Overall, September's subtle breeze offers a serene backdrop for the island's breathtaking beauty, contrasting uniquely with its more blustery counterparts in the earlier months.
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 notably warmer and wetter, with average temperatures around 28°C (82°F) and substantial rainfall of 188 mm (7.4 in) spread across 24 days. The humidity level peaks at 80%, creating a tropical atmosphere. In contrast, January offers a slightly cooler experience, with average temperatures dipping to 26°C (80°F) and significantly reduced rainfall of 67 mm (2.6 in) over 15 days. Humidity remains similar at 79%, providing a more comfortable environment. For more detailed insights on January weather, visit San Andres weather in January.
In comparing September and February weather, we find that September tends to be warmer and wetter. The average temperature in September reaches 28°C (82°F), with highs around 29°C (85°F), while February sees slightly cooler averages at 26°C (79°F) and a maximum of 28°C (82°F). September experiences significant rainfall, with 188 mm (7.4 in) spread over 24 days, in contrast to February's much drier conditions, which see only 32 mm (1.3 in) of precipitation across 14 days. Both months maintain high humidity levels at 80%, contributing to the tropical climate. For more details, check San Andres weather in February.
In comparing the weather between September and March, both months feature warm temperatures with September having a slightly wider range: a minimum of 25°C (78°F), an average of 28°C (82°F), and a maximum of 29°C (85°F). In contrast, March sees temperatures ranging from a minimum of 24°C (76°F) to a maximum of 28°C (82°F). While March is relatively dry, with only 35 mm (1.4 in) of precipitation over 14 days, September experiences much heavier rainfall totaling 188 mm (7.4 in) across 24 days. Humidity remains constant at 80% in both months, contributing to the tropical feel of San Andres. For more detailed information, you can check San Andres weather in March.
In comparing the weather between September and April, both months showcase warm temperatures, with September having a slightly higher average of 28°C (82°F) compared to April's 27°C (81°F). Both months experience similar maximum temperatures, peaking at around 29°C (84°F-85°F). However, September is significantly wetter, receiving 188 mm (7.4 in) of precipitation across 24 days, while April sees only 43 mm (1.7 in) over 13 days. Humidity levels are comparable, with April being slightly higher at 82% compared to September's 80%. For more detailed information on April weather, visit San Andres weather in April.
In September, the weather is characterized by slightly warmer average temperatures, ranging from a minimum of 25°C (78°F) to a maximum of 29°C (85°F), similar to May but with a higher average of 28°C (82°F). However, September experiences more precipitation, with 188 mm (7.4 in) falling over 24 days, compared to May's 156 mm (6.2 in) over 23 days. The humidity remains relatively high during both months, with September at 80% and May at 83%, contributing to a tropical feel. For a closer look at May's weather specifics, you can visit San Andres weather in May.
In September, the weather features a minimum temperature of 25°C (78°F) and an average of 28°C (82°F), peaking at 29°C (85°F). This month experiences significant rainfall, with 188 mm (7.4 in) spread over 24 days, along with a humidity level of 80%. In contrast, June has a slightly lower average temperature of 27°C (82°F), but maintains the same minimum and maximum temperatures. However, June is wetter, bringing 231 mm (9.1 in) of rain over 27 days and reflecting higher humidity at 87%. For more detailed weather information, you can visit San Andres weather in June.
When comparing the weather in September to that of July, both months display similar temperature ranges, with September showcasing a minimum of 25°C (78°F) and an average of 28°C (82°F), while July has a slightly lower average of 27°C (81°F). However, September typically experiences more rain with 188 mm (7.4 in) of precipitation falling over 24 days, compared to July's 230 mm (9.1 in) over 27 days. Humidity levels are also higher in July at 86%, compared to September's 80%, making July feel a bit more oppressive. For a detailed look at July's conditions, check out San Andres weather in July.
When comparing the weather between September and August, we see that both months feature similar temperatures, with September averaging slightly warmer at 28°C (82°F) compared to August's average of 27°C (82°F). However, September experiences a decrease in precipitation, receiving 188 mm (7.4 in) over 24 days, whereas August sees more rainfall at 231 mm (9.1 in) spread over 27 days. Humidity remains relatively high in both months, with September at 80% and August slightly higher at 83%. For more detailed insights about August weather, you can check San Andres weather in August.
In September, the weather showcases a warm climate with an average temperature of 28°C (82°F) and a high of 29°C (85°F), accompanied by relatively high humidity at 80%. However, the month is marked by substantial rainfall, totaling 188 mm (7.4 in) over 24 days.
In contrast, October experiences slightly cooler temperatures, with an average of 27°C (81°F) while still reaching a high of 29°C (85°F). The precipitation increases to 268 mm (10.5 in) across 27 days, indicating a wetter month. Despite the increase in rainfall, humidity remains fairly consistent at 79%. To learn more about the specifics of October weather, you can check out San Andres weather in October.
In comparing the weather of September and November, both months feature warm temperatures, with September having minimal variation in temperature, ranging from a minimum of 25°C (78°F) to a maximum of 29°C (85°F), and an average of 28°C (82°F). November sees similar temperatures, with a slightly lower maximum of 29°C (84°F) and an average of 27°C (81°F). However, November tends to be wetter, receiving 205 mm (8.1 in) of precipitation over 28 days, compared to September's 188 mm (7.4 in) across 24 days. Humidity levels remain relatively consistent, with September at 80% and November at 81%. For a detailed look at November's conditions, you can visit San Andres weather in November.
In September, the weather is notably warmer with average temperatures reaching 28°C (82°F) and a maximum of 29°C (85°F), alongside a high humidity level of 80%. The month experiences significant rainfall, with 188 mm (7.4 in) spread over 24 days. In contrast, December offers slightly cooler temperatures, averaging 27°C (80°F), with a maximum of 28°C (83°F) and only a modest decrease in humidity to 79%. Rainfall also decreases to 139 mm (5.5 in) across 26 days. For more detailed information on December weather, you can check San Andres weather in December.
As September arrives in San Andres, the weather takes on a unique character distinct from other months. With high humidity levels and frequent rainfall, it creates a lush, vibrant atmosphere that contrasts sharply with the drier, sunnier conditions typically experienced earlier in the year. Temperatures remain warm, making it a great time to enjoy the island's natural beauty, albeit with an umbrella close at hand. If you're planning a visit and want to know more about the year's weather patterns, be sure to check out the full details at San Andres Climate.