Last updated: August 21, 2025
In September, La Union, Colombia, experiences a comfortable climate characterized by a maximum temperature of 29°C (85°F) and an average of 19°C (67°F), with temperatures dipping to a pleasant minimum of 12°C (53°F). This month is marked by significant precipitation, receiving approximately 230 mm (9.1 in) across 25 days, contributing to a lush environment and dampening the air with a humidity level around 53%. The combination of warm temperatures and frequent rain creates a vibrant, tropical atmosphere that defines La Union during this time.
In September, La Union, Colombia, experiences a pleasant climate with temperatures that reflect the steady patterns typical of the region. The month begins with a minimum of 12°C (53°F), while the average remains comfortable at around 19°C (67°F). Daytime highs can reach up to 29°C (85°F), marking a slight dip from the preceding month, yet still inviting for outdoor activities. This consistency in temperatures throughout the month makes September a wonderful time to enjoy the mild, tropical climate of La Union, as it gracefully transitions from the vibrant warmth of summer towards the cooler, drier months ahead. With such balanced weather, it's a perfect opportunity for visitors to explore the natural beauty and rich culture of this Colombian gem.
In September, La Union, Colombia, experiences a noticeable uptick in precipitation, receiving 230 mm (9.1 in) of rainfall over 25 days. This pattern marks a shift from the drier months of July and August, which see significantly lower totals of 205 mm and 157 mm, respectively. As the rainy season resumes, it becomes evident that September acts as a bridge into the wetter months, narrowing the gap between the lighter summer and the intense downpours that characterize October and November. This month’s rainfall not only replenishes the landscape but also sets the stage for the lush, vibrant scenery that follows, illustrating La Union's dynamic climatic patterns.
In September, La Union experiences a refreshing dip in humidity, settling at a comfortable 53%. This marks a notable contrast to the sultry conditions of the preceding months, particularly the highs of 93% in both May and June. As the region transitions from the intense humidity of late spring and early summer, September offers a welcome respite that encourages outdoor exploration. Following this lighter humidity, conditions gradually increase again as autumn approaches, demonstrating La Union's climatic ebb and flow throughout the year.
In September, La Union, Colombia, continues to experience a highly intense UV Index of 15, placing it in the extreme exposure category and necessitating a burn time of just 10 minutes. This trend of elevated UV levels is consistent with the preceding months, particularly from January to April, where the UV Index peaks at a staggering 18, before slightly dropping during the latter half of the year. While September's readings see a small decline compared to the summer months, they still underscore the importance of sun safety in this vibrant region. To stay informed about necessary precautions, check the full details at La Union UV Index.
UV Risk Categories
As summer draws to a close, September in La Union, Colombia, continues to bask in abundant sunshine with an impressive 289 hours of bright, sunny days. This month follows the peak of August, which boasts a remarkable 298 hours, hinting at a trend of increasingly longer days during the summer months. After a slight dip in October, where sunshine hours decrease to 258, the fall months tend to hold onto that vibrant warmth, ensuring that the vibrant energy of La Union lingers a little longer. With such radiant sunlight framing the landscape, September offers a perfect backdrop for outdoor adventures and gatherings, inviting both locals and visitors alike to embrace the beauty of the season.
In La Union, Colombia, September stands out with a notable 27% chance of sunny weather, making it one of the sunniest months of the year, alongside July. This trend suggests a delightful shift in climate as the dry season approaches, with the likelihood of sunny days significantly rising compared to the rainy months earlier in the year. As we transition from the heavy rains of April and May, the increased sunshine in September provides an inviting opportunity for outdoor adventures and exploration. With its favorable weather conditions, September is indeed a great time for those looking to soak up the sun in this vibrant region.
In La Union, Colombia, the rhythm of daylight is a constant melody that plays throughout the year, with each month gracing the town with a remarkable 12 hours of sunlight. This consistency offers a delightful predictability, making it an inviting destination for visitors and residents alike. Whether you’re exploring lush landscapes or enjoying community festivities, the equatorial sun ensures that people can make the most of every moment, basking in a nearly unchanged daylight duration. As September rolls in with the same generous daylight, it exemplifies the unique charm of living near the equator, where the sun hangs poised in the sky, inviting all to embrace the beauty of endless days.
As September rolls in La Union, Colombia, the average wind speed reaches a gentle 1.4 m/s (3 mph), reflecting a slight increase from the summer months. Throughout the year, the wind tends to fluctuate minimally, lingering around the 1.2 to 1.5 m/s range from June through August, before dipping again in the later months. This subtle uptick in September showcases the region’s characteristic tranquility, making it an ideal time for leisurely activities such as windsurfing and kite-flying. Overall, while the winds remain relatively calm, September serves as a reminder of the gentle shifts that can bring new energy and vibrant experiences to this coastal paradise.
Weather in La Union varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in La Union, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present distinct weather patterns. In September, temperatures range from a minimum of 12°C (53°F) to a comfortable average of 19°C (67°F), reaching up to a maximum of 29°C (85°F). However, it is also a notably wet month, receiving 230 mm (9.1 in) of precipitation over 25 days, coupled with a humidity level of 53%.
Conversely, January is slightly cooler, with minimum temperatures around 9°C (49°F) and an average of 18°C (65°F), peaking at 27°C (81°F). This month is characterized by even heavier rainfall, totaling 312 mm (12.3 in) over 23 days and higher humidity at 72%. For a more detailed understanding of January weather in the region, you can visit La Union weather in January.
September and February present contrasting yet somewhat similar weather patterns. September experiences average temperatures ranging from a minimum of 12°C (53°F) to a maximum of 29°C (85°F), accompanied by significant rainfall totaling 230 mm (9.1 in) over 25 days, and a humidity level of 53%. In contrast, February has slightly cooler average temperatures, with a minimum of 12°C (54°F) and a maximum of 27°C (82°F), but it is notably wetter, receiving 404 mm (15.9 in) of precipitation over 26 days, along with increased humidity at 66%. For more detailed insights on the February climate, you can check La Union weather in February.
September and March present distinct weather patterns. In September, temperatures range from a minimum of 12°C (53°F) to a maximum of 29°C (85°F) with an average of 19°C (67°F). While the month experiences considerable rainfall with 230 mm (9.1 in) spread across 25 days, humidity levels sit at a moderate 53%. In contrast, March features slightly cooler temperatures, with a minimum of 11°C (52°F) and a maximum of 26°C (80°F), averaging 18°C (65°F). However, it is significantly wetter, boasting 427 mm (16.8 in) of precipitation over 30 days and higher humidity at 74%. For a more detailed look at the weather specifics during this month, you can check La Union weather in March.
When comparing the weather in September and April, both months showcase mild average temperatures, with September having a minimum of 12°C (53°F) and a maximum of 29°C (85°F), while April presents a slightly warmer minimum of 13°C (56°F) and a maximum of 26°C (80°F). However, April tends to be much wetter, receiving 431 mm (17.0 in) of rainfall over 29 days, compared to September's 230 mm (9.1 in) across 25 days. This significant increase in precipitation is accompanied by higher humidity levels in April at 83%, as opposed to September's 53%. For a detailed look at April weather in La Union, you can visit La Union weather in April.
September and May present distinct weather patterns, with September generally being warmer during the day but less humid. In September, temperatures range from a minimum of 12°C (53°F) to a maximum of 29°C (85°F), with an average temperature of 19°C (67°F). The month sees significant rainfall, totaling 230 mm (9.1 in) over 25 days, and a humidity level of 53%. In contrast, May has a slightly higher minimum temperature of 13°C (56°F) and a lower maximum of 27°C (81°F), while maintaining an average of 19°C (66°F). However, May is much wetter, experiencing 423 mm (16.7 in) of precipitation over 30 days, coupled with a high humidity of 93%. For a closer look at May's weather, you can visit La Union weather in May.
In comparing the weather of September and June in La Union, both months feature similar temperature ranges, with September exhibiting a minimum of 12°C (53°F) and a maximum of 29°C (85°F), while June has a minimum of 12°C (54°F) and a maximum of 27°C (80°F). However, September tends to be slightly drier, receiving 230 mm (9.1 in) of precipitation over 25 days, compared to June's 272 mm (10.7 in) over 28 days. Additionally, June experiences significantly higher humidity levels at 93%, in contrast to September’s more moderate humidity of 53%. For a more detailed look into June's weather patterns, you can explore La Union weather in June.
In comparing the weather of September and July, we find that both months exhibit similar average temperatures, with September's averages ranging from a minimum of 12°C (53°F) to a maximum of 29°C (85°F), while July sees a slightly cooler range from 11°C (53°F) to 27°C (81°F). However, September experiences higher precipitation levels, with 230 mm (9.1 in) occurring over 25 days compared to July's 205 mm (8.1 in) over 21 days. Additionally, September boasts a lower humidity level of 53%, contrasting sharply with July's more humid conditions at 84%. For more detailed information on July weather, check out La Union weather in July.
In comparing the weather of September and August, we see that both months share similar minimum and average temperatures, with September slightly cooler, having a maximum temperature of 29°C (85°F) compared to August's 30°C (86°F). However, September experiences significantly more rainfall, with 230 mm (9.1 in) of precipitation over 25 days, while August receives 157 mm (6.2 in) over only 18 days. Additionally, September is characterized by lower humidity at 53% compared to August's 61%. For more detailed information, you can check La Union weather in August.
September and October exhibit distinct weather patterns. In September, temperatures range from a minimum of 12°C (53°F) to a maximum of 29°C (85°F), with an average of 19°C (67°F). The month sees significant rainfall, totaling 230 mm (9.1 in) over 25 days, resulting in a humidity level of 53%. In contrast, October maintains similar daily temperatures, with a minimum of 12°C (54°F) and a maximum of 29°C (84°F), but the average dips slightly to 18°C (65°F). Rainfall increases substantially to 426 mm (16.8 in) across 29 days, contributing to higher humidity at 67%. For more details on weather conditions in October, visit La Union weather in October.
September and November exhibit distinct weather patterns, with September being slightly warmer on average. In September, temperatures range from a minimum of 12°C (53°F) to a maximum of 29°C (85°F), while November sees a narrower range, with temperatures from 11°C (53°F) to 26°C (79°F). Precipitation also differs significantly; September receives 230 mm (9.1 in) over 25 days, whereas November experiences a wetter climate with 375 mm (14.8 in) across 29 days. Additionally, humidity levels rise in November to 78%, compared to September's 53%. For more details, you can check La Union weather in November.
In September, the weather is generally warm with average temperatures ranging from a minimum of 12°C (53°F) to a maximum of 29°C (85°F). This month experiences considerable rainfall, with about 230 mm (9.1 in) of precipitation spread over 25 days, and a moderate humidity level of 53%. In contrast, December brings slightly cooler average temperatures, with a minimum of 12°C (54°F) and a maximum of 26°C (79°F). However, it sees a significant increase in precipitation, totaling 420 mm (16.5 in) over 30 days, resulting in much higher humidity at 85%. For more specifics on December weather, you can check La Union weather in December.
As September unfolds in La Union, the weather presents a striking contrast to other months. With a softer maximum temperature averaging around 29°C, the days are warm yet comfortable, while the average low dips to a refreshing 19°C. However, the month is also characterized by generous rainfall, with precipitation occurring on 25 days, leading to a lush, vibrant landscape. The humidity, sitting at a moderate 53%, adds a hint of tropical warmth, making this month distinctively rich in both atmosphere and greenery. For a deeper understanding of how September fits within the broader climate patterns, explore La Union Climate.