Last updated: August 21, 2025
September in Santa Marta, Colombia is characterized by warm temperatures and notable humidity, making it a vibrant time to experience the coastal charm of the region. Daily highs reach a pleasant 30°C (86°F) with an average of 28°C (82°F), while nighttime lows settle around 25°C (77°F). Although the month sees about 77 mm (3.0 in) of rainfall over 11 days, the lush scenery and invigorating atmosphere are enhanced by this brief respite from the tropical heat. With humidity averaging 84%, visitors should be prepared for a tropical feel, ideal for those looking to explore the rich culture and natural beauty of Santa Marta.
In September, Santa Marta experiences a warm and inviting climate, with temperatures showing a subtle rise as compared to the previous months. The minimum temperature averages around 25°C (77°F), while the average temperature reaches a cozy 28°C (82°F), peaking at a comfortable 30°C (86°F) during the day. This month marks a slight transition towards warmer conditions, hinting at the approaching summer. With steady temperatures throughout the year, September is a delightful time for visitors to bask in the tropical warmth, making it a perfect backdrop for beach activities and exploration. Whether you prefer the cooler mornings or the balmy afternoons, Santa Marta's September weather is sure to enhance your experience in this vibrant coastal city.
September marks a notable transition in Santa Marta's rainfall pattern, with precipitation reaching 77 mm (3.0 in) over 11 days—the highest monthly total so far this year. This increase reflects a steady rise in rainfall during the latter half of the year, following drier months such as January and February, which recorded virtually no precipitation. As the city moves from the relatively dry summer months into the wetter season, the rainfall in September paves the way for October's peak, where totals soar to 143 mm (5.6 in). Rainfall frequency also intensifies, with 11 days of precipitation, setting a foundation for the lush, vibrant landscapes that emerge after the rains. Clearly, September serves as an essential bridge into the heart of Santa Marta's rainy season, emphasizing the natural rhythm of this coastal region.
September in Santa Marta, Colombia, brings a notable shift in humidity levels, settling at 84%. This figure reflects a slight decrease from the peak of 85% experienced in the preceding months of July and August. The summer's sticky embrace continues to linger, yet the air begins to feel a touch lighter, signaling the transition towards the more temperate months ahead. As the year progresses, the humidity will gradually decrease, dipping to 82% in October, but September retains a tropical charm typical of this coastal city, maintaining its reputation for warmth and lushness while enticing visitors with its vibrant atmosphere.
In September, the UV Index in Santa Marta, Colombia remains at a high level of 13, indicating an extreme exposure category that warrants caution. This trend of consistently elevated UV levels has been notable throughout the summer months, with similar readings of 13 in July and August. The peak UV Index of 15 in April highlights the intensity of the region’s sun, while earlier months—January through March—recorded even higher indices, peaking at 14. Overall, the data indicates that residents and visitors alike should be vigilant about sun protection, especially as September holds steady before a slight decrease in UV exposure moving into October. For more detailed information on keeping safe under the sun, check out Santa Marta UV Index.
UV Risk Categories
September in Santa Marta, Colombia, shines brightly with an impressive 300 hours of sunshine, contributing to its reputation as a sun-soaked paradise. Following the peak of 340 hours in March, which represents the sunniest month of the year, September maintains a robust level of light, showcasing a slight dip compared to the summer months. The transition from the vibrant summer, where sunshine often exceeds 320 hours from April to August, to the slightly cooler October, with 304 hours, reflects a gentle shift that still keeps visitors basking in beautiful weather. This consistent availability of sunshine makes September an ideal time to enjoy beachside activities, explore the stunning landscapes, and soak up the rich culture of the region.
As you look forward to your September getaway in Santa Marta, Colombia, it's important to note that the likelihood of sunny weather tends to dip during this month. With only a 19% chance of sun, September stands among the cloudier months, following a pattern from the rainy season that starts around April. While early in the year, months like January and February offer a more reliable sunny experience with chances soaring to 60% and 76%, respectively, fall ushers in gloomier skies. Fortunately, as the year progresses into October and November, the sun makes a gradual return, with chances rising again to 23% and 34%. Thus, while September may not guarantee the golden rays you desire, it offers a unique chance to experience the lush landscapes and rich culture that thrive in the heart of the season.
In September, Santa Marta, Colombia enjoys a satisfying average of 12 hours of daylight, continuing the trend established in the preceding months of April through August. This consistency in daylight duration fosters a vibrant atmosphere perfect for outdoor activities and exploration. As the year progresses towards October, however, daylight hours begin to recede, dropping back to 11 hours. This subtle shift highlights the region's tropical climate, where the variation in daylight is minimal throughout the year, allowing for extended moments to bask in the sun or revel in the natural beauty of this coastal gem.
As September unfolds in Santa Marta, Colombia, the winds begin to soften, with average speeds dipping to 4.4 m/s (10 mph). This marks a notable decline compared to the breezier months of the earlier year, such as January through March, when the winds confidently reached above 9 m/s. The transition from the summer months, characterized by lively gusts, gradually gives way to a more tranquil atmosphere as September progresses. Following its gentle climax, the wind speeds continue to diminish into October, suggesting a shift towards calmer days ahead. This gradual easing of the winds creates an inviting ambiance for those looking to embrace Santa Marta’s serene coastal beauty.
Weather in Santa Marta varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Santa Marta, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, Santa Marta experiences warmer temperatures, with a minimum of 25°C (77°F) and an average of 28°C (82°F), peaking at a maximum of 30°C (86°F). The month is quite humid, with levels around 84%, and is also marked by significant rainfall, receiving 77 mm (3.0 in) over approximately 11 days. In contrast, January offers a slightly cooler climate, with temperatures ranging from a minimum of 23°C (74°F) to an average of 26°C (79°F) and a maximum of 28°C (83°F). Notably, January is much drier with only 3 mm (0.1 in) of precipitation and no rainy days, and the humidity drops to a more comfortable 65%. For more details, you can check the Santa Marta weather in January.
September and February in Santa Marta exhibit distinct weather patterns. September tends to be warmer, with average temperatures reaching up to 28°C (82°F) and higher humidity levels at 84%, often accompanied by significant precipitation totaling 77 mm over 11 days. In contrast, February is milder, featuring a lower average temperature of 26°C (78°F) and a much drier climate, with no recorded precipitation throughout the month and a humidity level of 65%. For more detailed insights, you can check out Santa Marta weather in February.
In comparing the weather of September and March, September tends to be warmer and wetter. The average temperature in September reaches 28°C (82°F), with highs of 30°C (86°F) and a significant humidity level of 84%. In contrast, March is slightly cooler, with an average temperature of 26°C (79°F) and maximums of 28°C (82°F), accompanied by a much lower humidity of 64%. Additionally, September experiences considerable rainfall with 77 mm (3.0 in) over 11 days, whereas March sees almost no precipitation at just 2 mm (0.1 in) across the entire month. For a deeper look at the climate details for March, you can visit Santa Marta weather in March.
In comparing the weather of September and April, we see notable differences in both temperature and precipitation. September tends to be warmer, with an average temperature of 28°C (82°F) and highs reaching up to 30°C (86°F), while April has slightly cooler temperatures, averaging 26°C (80°F) and peaking at 29°C (84°F). Additionally, September experiences significantly more rainfall, with 77 mm (3.0 in) of precipitation over 11 days, compared to just 7 mm (0.3 in) over 2 days in April. The humidity is also higher in September, at 84%, while April's humidity is more comfortable at 64%. For a detailed look at the weather specific to April, you can check out Santa Marta weather in April.
When comparing the weather between September and May, both months exhibit warm temperatures, but September tends to be slightly hotter and more humid. In September, the minimum temperature hovers around 25°C (77°F) with an average of 28°C (82°F) and a maximum of 30°C (86°F), alongside higher humidity at 84%. In contrast, May's temperatures are a bit cooler, with a minimum of 25°C (77°F), an average of 27°C (81°F), and a maximum of 29°C (85°F), while humidity is lower at 65%. Additionally, September experiences more precipitation, with 77 mm (3.0 inches) over 11 days, compared to May's 45 mm (1.8 inches) over just 8 days. For more detailed information, you can check Santa Marta weather in May.
In comparing September and June weather in Santa Marta, we find some similarities and notable differences. Both months exhibit minimum temperatures at a consistent 25°C (77°F) and maximums reaching up to 30°C (86°F). However, June has a slightly lower average temperature of 27°C (82°F) compared to September's 28°C (82°F). When it comes to precipitation, September experiences more rainfall, totaling 77 mm (3.0 in) over 11 days, while June sees only 58 mm (2.3 in) over 9 days. Additionally, humidity levels are higher in September at 84%, compared to June’s 77%. For more detailed insights into June weather, you can visit Santa Marta weather in June.
When comparing the weather between September and July, September tends to be slightly warmer, with average temperatures reaching 28°C (82°F) compared to July's 27°C (81°F). Both months have similar minimum temperatures, though September often sees a higher maximum of 30°C (86°F) compared to 29°C (85°F) in July. Additionally, September experiences more precipitation, averaging 77 mm (3.0 in) over 11 rainy days, while July has only 54 mm (2.1 in) across 7 days. Humidity levels are also comparable, with September at 84% and July at 85%. For more detailed insights on July weather, you can check out Santa Marta weather in July.
In comparison to August, September in Santa Marta is characterized by slightly warmer temperatures, with a minimum of 25°C (77°F) compared to August's 24°C (76°F) and an average of 28°C (82°F) versus August's 27°C (82°F). The maximum temperature in September reaches 30°C (86°F), while in August it peaks at 29°C (85°F). Additionally, September experiences more precipitation, with 77 mm (3.0 in) over 11 days, compared to August's 68 mm (2.7 in) over 10 days. Humidity remains relatively similar, with September at 84% and August at 85%. For more detailed information, you can check out Santa Marta weather in August.
September and October in Santa Marta exhibit similar temperature ranges, with both months featuring maximums reaching 30°C (86°F). However, September has slightly higher average temperatures at 28°C (82°F) compared to October's 27°C (81°F). Precipitation increases significantly in October, accumulating 143 mm (5.6 in) over 18 days, whereas September sees only 77 mm (3.0 in) over 11 days. Despite this, humidity remains high in both months, hovering around 84% in September and slightly lower at 82% in October. For a more detailed look at October weather patterns, check out Santa Marta weather in October.
In September, the weather is characterized by warmer temperatures, with a minimum of 25°C (77°F) and an average around 28°C (82°F), peaking at 30°C (86°F). This month experiences a relatively high level of humidity at 84% and notably more precipitation, accumulating 77 mm (3.0 in) over 11 days. In contrast, November sees slightly cooler temperatures, with a minimum of 24°C (76°F) and an average of 27°C (81°F), reaching a maximum of 29°C (85°F). Precipitation decreases to 72 mm (2.9 in) spread across just 6 days, and humidity also drops to 79%. For more detailed information, check out Santa Marta weather in November.
September and December exhibit distinct differences in weather patterns. In September, the temperatures range from a minimum of 25°C (77°F) to a maximum of 30°C (86°F), with an average of 28°C (82°F). This month experiences significant rainfall, totaling 77 mm (3.0 in) over 11 days, combined with high humidity levels at 84%. In contrast, December offers a slightly cooler climate, with temperatures ranging from 24°C (76°F) to 29°C (84°F) and an average of 27°C (80°F). Remarkably, December sees little to no rainfall, with only 4 mm (0.1 in) of precipitation over the entire month and a comfortable humidity of 69%. For more details, you can check Santa Marta weather in December.
September in Santa Marta presents a unique blend of warm temperatures and notable humidity, making it distinct from the hotter summer months. With averages settling around 28°C (82°F), the weather remains consistent, yet the increased precipitation—usually around 77 mm over approximately 11 days—brings a refreshing change during this time. Travelers can expect a lush landscape as the afternoon showers nourish the surroundings, providing a vibrant contrast to the drier periods earlier in the year. For those considering a visit, this month's atmospheric charm and lush scenery make it an alluring choice. Discover more about the seasonal nuances by visiting Santa Marta Climate.