Last updated: August 21, 2025
In La Union, Colombia, September brings a blend of warmth and moisture, with average temperatures around 28°C (82°F) and peak highs reaching 35°C (95°F). The month witnesses significant rainfall, with a total precipitation of 209 mm (8.2 in) spread across 27 days, creating a lush and vibrant landscape. Humidity levels soar to an average of 87%, enhancing the tropical ambiance that characterizes this region. Whether you're exploring the lush surroundings or enjoying local festivities, September's climate adds a unique atmosphere to your experience in La Union.
In La Union, Colombia, September typically brings warm and inviting temperatures, with minimums around 23°C (74°F) and averages settling at 28°C (82°F). The month retains a lively feel, with maximums reaching up to 35°C (95°F), reflecting a slight dip compared to the hotter summer months of February and March. This trend of gentle warmth continues from August, indicating a stable climate that remains attractive for outdoor activities. As the month transitions into October, temperatures cool slightly, yet September’s warmth lingers, making it a perfect time to enjoy the lush surroundings and vibrant culture of this tropical paradise.
In September, La Union, Colombia, experiences a significant rainfall of 209 mm (8.2 in), matching the precipitation levels of August and illustrating the region's intense wet season. This month sees 27 rainy days, contributing to a lush, vibrant landscape typical of this time of year. Following a gradual increase in rainfall from January through April, the trend peaks in May with 259 mm, before stabilizing into heavy but consistent precipitation from June through September. The persistence of rain during these months highlights the pronounced seasonal pattern, setting the stage for the drier months that follow, while underscoring the crucial link between precipitation and the region's ecological vitality.
September in La Union, Colombia, showcases a notable continuity in the region's high humidity levels, peaking at 87%, which mirrors the conditions of the preceding summer months. As the year progresses, a clear trend emerges: humidity escalates significantly from mid-year, reaching its zenith during the humid months of June through August and remaining elevated in September. While the humidity slightly dips in October and November, it retains a relatively high level, hovering around 86%, indicating that the tropical climate underscores the region's lush environments and vibrant ecosystems. This consistent moisture not only shapes the local weather but also influences daily life in La Union.
In September, La Union, Colombia, maintains a UV Index of 13, categorized as extreme, with a burn time of just 10 minutes. This month continues a trend of high UV exposure that has characterized the region since the beginning of the year, peaking at an index of 15 in April. With the UV Index consistently hovering between 13 and 15 for several months, it’s crucial for residents and visitors to take protective measures against sunburn and other UV-related effects. As we transition into the fall months, the UV levels remain a significant concern, emphasizing the importance of sun safety. For more details on how to manage UV exposure, check out La Union UV Index.
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As September unfolds in La Union, Colombia, it continues the trend of abundant sunshine, offering 266 hours of glorious daylight. This month maintains a steady glow compared to August’s 268 hours, showcasing the region's consistent sunny disposition. Interestingly, while earlier months such as March boast impressive totals of 323 hours, the overall trend reveals a seasonal rhythm where each month brings a dance of light and warmth. As the year approaches its end, it's clear that La Union basks in ample sunshine, with December shining brightest at 313 hours, promising a radiant close to the year amidst the tropical allure.
In La Union, Colombia, September's likelihood of sunny weather mirrors the trends of the preceding months, with only a 12% chance of sunshine. As the year progresses, a noticeable decline in sunny days emerges, peaking in January with a robust 59% chance before tapering off significantly through the spring and summer months. With chances of sunshine in September slightly lower than those of August, which sits at 9%, travelers looking for bright skies may find better options earlier in the year. Overall, if you're planning a visit to La Union in September, it might be wise to embrace the likelihood of clouds rather than rely on sunny days.
In La Union, Colombia, the daylight duration presents a captivating rhythm throughout the year. From the steady 11 hours in January and February, the days gradually expand to a full 12 hours starting in March and maintaining this generous length through September. This consistent 12-hour span in the latter half of the year fosters a vibrant atmosphere ideal for outdoor activities. As September closes, daylight begins to retreat again, mirroring the earlier months with 11 hours of daylight returning in October. This cyclical pattern not only marks the transition of seasons but also accentuates the region's inviting environment, perfect for enjoying the sun’s embrace.
As September unfolds in La Union, Colombia, the wind whispers at an average speed of 1.6 m/s (4 mph), maintaining the gentle caress that marks the transition from summer to the cooler months. This month’s winds mirror those of August, suggesting a consistent breeze that lingers throughout the late summer. Interestingly, September showcases a slight dip from the more robust winds of earlier months, like February and March, when speeds reached 2.3 m/s (5 mph). However, it still offers a refreshing contrast to the calmness of mid-year, characterized by lower winds in June and July. Overall, the gentle winds in September reinforce the serene ambiance of La Union, providing a perfect backdrop for relaxation and contemplation.
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.
In September, the weather is characterized by high humidity at 87% and significant rainfall, with an average temperature of 28°C (82°F) and total precipitation of 209 mm (8.2 in) spread over 27 days. In contrast, January experiences drier conditions with only 27 mm (1.1 in) of rainfall on just 5 days, while maintaining a slightly higher average temperature of 29°C (84°F) and a maximum of 37°C (99°F). This makes January not only warmer but also more comfortable due to lower humidity levels at 70%. For more details on the January weather, visit La Union weather in January.
In comparing the weather between September and February, we see notable differences in temperature, precipitation, and humidity. September experiences a warm climate with average temperatures around 28°C (82°F) and can peak at 35°C (95°F), alongside high humidity levels of 87% and significant rainfall totaling 209 mm (8.2 in) over 27 days. In contrast, February offers a hotter and drier experience, with an average temperature of 30°C (87°F) and maximums reaching up to 39°C (103°F). Precipitation in February is minimal, with only 6 mm (0.2 in) over just one day, and humidity drops to 67%. For more details on February weather, check out La Union weather in February.
In comparing the weather of September and March, September tends to be warmer and more humid, with average temperatures around 28°C (82°F) and maximums reaching 35°C (95°F). This month also experiences significant rainfall, totaling 209 mm (8.2 inches) over 27 days, contributing to a high humidity level of 87%. In contrast, March features slightly higher average temperatures of 30°C (86°F) and can soar to 39°C (103°F), but with much less precipitation—only 48 mm (1.9 inches) over 9 days. The humidity in March is more manageable at 65%, making it generally more comfortable compared to the dampness of September. For more details on the specific weather conditions in March, you can check out La Union weather in March.
September and April exhibit notable differences in weather patterns. In September, temperatures range from a minimum of 23°C (74°F) to a maximum of 35°C (95°F), with an average of 28°C (82°F). The month is characterized by high humidity at 87% and significant precipitation, totaling 209 mm (8.2 in) over 27 days. In contrast, April experiences slightly warmer temperatures, with a minimum of 23°C (74°F) and a peak of 38°C (100°F), averaging 29°C (84°F). Although April is drier, with only 150 mm (5.9 in) of rain across 23 days and lower humidity at 67%, it is marked by more intense heat. For a detailed overview, check out La Union weather in April.
Comparing the weather between September and May, both months feature similar average temperatures, hovering around 28°C (82°F). September, however, experiences slightly lower maximum temperatures of 35°C (95°F) compared to May's peak of 36°C (97°F). Precipitation is notably higher in May, with total rainfall reaching 259 mm (10.2 in) over 27 days, whereas September sees 209 mm (8.2 in) during the same number of days. Humidity levels are also higher in September at 87%, compared to May's 79%, creating a more humid atmosphere as summer transitions into fall. For more details, you can visit La Union weather in May.
In comparing the weather between June and September, both months feature a warm climate with similar minimum temperatures around 23°C (74°F) and average temperatures close to 28°C (82°F in September and 83°F in June). However, June tends to be slightly warmer at its maximum, reaching up to 36°C (98°F), compared to September's peak of 35°C (95°F). Precipitation levels are notably high in both months, with June receiving 229 mm (9.0 in) of rainfall over 26 days, while September has 209 mm (8.2 in) across 27 days. Humidity remains consistent at 87% for both months, contributing to a tropical feel throughout. For more detailed insights, you can check La Union weather in June.
In comparing the weather of September and July, both months exhibit warm temperatures, with September showing a minimum of 23°C (74°F) and a maximum of 35°C (95°F), while July has slightly higher minimum and maximum temperatures of 24°C (75°F) and 36°C (96°F) respectively. The average temperature remains similar, with September at 28°C (82°F) and July at 28°C (83°F). Precipitation levels are relatively close, with September experiencing 209 mm (8.2 in) of rain on 27 days, compared to July's 198 mm (7.8 in) over 25 days. Humidity is slightly lower in September at 87%, while July maintains a higher humidity level of 88%. For more detailed insights, you can check La Union weather in July.
In comparing the weather of September and August, we see that both months exhibit remarkably similar conditions. September has a minimum temperature of 23°C (74°F) and an average of 28°C (82°F), mirroring August's minimum and average temperatures of 23°C (74°F) and 28°C (83°F), respectively. Maximum temperatures are also close, with September reaching up to 35°C (95°F) compared to August's peak of 35°C (96°F). Precipitation levels are the same for both months at 209 mm (8.2 in), but September experiences rainfall over 27 days, slightly more than August's 25 days. Humidity levels remain consistent at 87% for both months, emphasizing the tropical climate experienced in this region. For a deeper dive into August's weather in La Union, check out La Union weather in August.
In September, temperatures typically range from a minimum of 23°C (74°F) to a maximum of 35°C (95°F), with an average of 28°C (82°F). The month also experiences significant rainfall, accumulating 209 mm (8.2 in) over 27 rainy days and a high humidity level of 87%. In contrast, October maintains a similar minimum temperature of 23°C (74°F) but shows a slight decrease in average temperature to 27°C (82°F) while reaching a maximum of 36°C (96°F). Precipitation increases slightly to 214 mm (8.4 in) across 29 rainy days, and humidity remains comparable at 86%. For more detailed insights into the weather during October, check out La Union weather in October.
September and November exhibit similar temperature ranges, with September having a maximum of 35°C (95°F) and November slightly lower at 34°C (94°F). Both months share a minimum temperature of 23°C (74°F) and an average of 28°C (82°F). However, September experiences slightly higher precipitation at 209 mm (8.2 in) compared to November's 186 mm (7.3 in), despite both months having 27 rainy days. The humidity levels are almost identical, with September at 87% and November at 86%. For more detailed insights, you can check La Union weather in November.
September and December share similar temperature ranges, with minimums around 23°C (74°F), averages near 28°C (82°F), and maximums reaching 35°C (95°F). However, September is markedly wetter, receiving 209 mm (8.2 in) of rainfall over 27 days, while December sees significantly less precipitation at 64 mm (2.5 in) across just 15 days. Additionally, humidity is slightly higher in September at 87%, compared to 80% in December. For more detailed insights on monthly weather, check out La Union weather in December.
In September, La Union experiences a distinct shift in its weather patterns, marked by increased humidity and significant precipitation. With the average temperature hovering pleasantly at 28°C (82°F), residents and visitors alike feel the warmth, while the frequent rain showers throughout the month—often totaling over 200 mm—create a lush, vibrant landscape. This wet ambiance contrasts sharply with the dry spells of earlier months, making September a time of rejuvenation for nature. For those interested in a more detailed look at the yearly weather trends, check out La Union Climate.