Last updated: August 21, 2025
In September, San Antonio, Colombia, experiences a delightful climate characterized by a maximum temperature of 28°C (82°F) and an average temperature of 19°C (66°F), providing a comfortable backdrop for outdoor activities. While the minimum temperature dips to a cool 11°C (51°F), it's the humidity level at 69% that adds a tropical touch to the atmosphere. This month also sees an average precipitation amount of 58 mm (2.3 in), spread over 11 days, resulting in refreshing rain showers that nourish the lush landscape. Overall, September in San Antonio offers a rich blend of warmth and rain, perfect for enjoying the region's vibrant scenery.
In September, San Antonio, Colombia, showcases a delightful blend of mild temperatures as the region transitions toward the latter part of the year. With a minimum of 11°C (51°F) and a maximum reaching 28°C (82°F), the average temperature hovers around 19°C (66°F), indicating a slight warming trend compared to the cooler months preceding it. This gradual increase from the consistent 18°C (64°F) average observed from April to August reflects the onset of warmer days, inviting both locals and visitors to enjoy the vibrant atmosphere. The balance of warm days and cooler evenings characterizes September as an ideal time to experience the stunning landscapes and rich culture of San Antonio.
September in San Antonio, Colombia, typically ushers in a notable dip in precipitation, recording only 58 mm (2.3 in) of rainfall over just 11 days. This represents a stark contrast to the months preceding it, where the rainfall peaks, especially in March with 394 mm (15.5 in), and dwindles to a mere fraction by the end of the dry spell in October. Such trends underline a distinctive shift from the heavier downpours of the earlier months, setting the stage for upcoming weeks that see a resurgence in precipitation, particularly in the wet season peak of November. The general pattern reveals a transition from the wettest months to a brief pause in rainfall, offering a respite before the cycle resumes.
In September, San Antonio, Colombia experiences a moderate humidity level of 69%, reflecting a slight recovery from the lower values seen in August at 64%. The month acts as a transitional phase before the humidity climbs again, peaking in the following months with October reaching 80%. As the year unfolds, a clear trend emerges: humidity levels generally rise from the dry months of January and February, hit their maximum in late spring and early summer with values exceeding 85%, and gradually taper off toward the end of the year. This pattern highlights San Antonio's distinctive tropical climate, where marked fluctuations in humidity influence the overall weather experience throughout the year.
In September, San Antonio, Colombia, continues to experience an extreme UV Index of 15, maintaining the trend observed throughout the year where values consistently soar high. With a burn time of just 10 minutes, it’s crucial for residents and visitors alike to take necessary precautions against the intense sun exposure that characterizes this region. This pattern of elevated UV levels remains steady since March, signaling the importance of vigilance in sun safety. As the year progresses, the UV Index fluctuates minimally, but September serves as a reminder that protective measures should always be on the agenda. For more insights on UV levels in the area, check out San Antonio UV Index.
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As September rolls into San Antonio, Colombia, the sunshine paints the landscape with a warm glow, boasting an impressive 315 hours of radiant daylight. This vibrant month continues the trend of sunshine abundance established in the peak summer months of July and August, where the city experienced remarkable highs of 324 and 330 hours respectively. Following a slight dip in October, where the hours mellow to 285, September stands out as a transition into the cooler months while still basking in generous sunlight. Overall, the data reflects a beautiful pattern of warm, sun-filled days peaking in mid-year and gradually tapering off, inviting locals and visitors alike to savor the sunny ambiance before the year's end.
September in San Antonio, Colombia, offers a refreshing likelihood of sunny weather, with a 24% chance of sunshine. This marks a notable increase compared to the preceding months, particularly when juxtaposed with April and May, where the chances dip as low as 7% and 11%, respectively. Interestingly, while January provides a moderately bright start to the year at 25%, September stands out as the sunniest month after the initial winter months, hinting at a seasonal trend toward clearer skies. As the year progresses, the chances of sun increase slightly in September before tapering off again in the closing months, making it a prime time for outdoor activities and exploration.
In San Antonio, Colombia, the rhythm of daylight unfolds in a captivating pattern throughout the year. Beginning in January, daylight stretches for 11 hours, creating a consistent backdrop as the months progress. By March, the days begin to lengthen, reaching a balmy 12 hours of light that continues uninterrupted through September. This splendid continuity of daylight during these months invites exploration and leisure activities, making it an ideal time for residents and visitors alike to bask in the sun. As autumn approaches in October, the daylight remains steadfast at 12 hours, before gently retreating back to 11 hours in November and December. Hence, September stands out as part of a delightful extended stretch of vibrant, sunlit days that characterize the region's enchanting climate.
In September, the winds in San Antonio, Colombia, pick up slightly, averaging 1.6 m/s (4 mph), mirroring the breezy days of August. This moderate wind speed is part of a noticeable trend, as the summer months see a gradual increase in wind intensity, reaching its peak in July. Following this, the winds either stabilize or slightly decline as the year transitions into the cooler months of October and November. Overall, September showcases a delightful balance of gentle breezes, perfect for enjoying the vibrant local culture and picturesque landscapes that San Antonio has to offer.
Weather in San Antonio varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in San Antonio, focusing on differences in temperature, rainfall, humidity, and UV levels.
September typically features milder temperatures with a minimum of 11°C (51°F) and a pleasant average of 19°C (66°F), peaking at 28°C (82°F). The month sees approximately 58 mm (2.3 in) of precipitation over about 11 days, with humidity levels around 69%. In contrast, January presents slightly lower temperatures, with a minimum of 9°C (49°F) and an average of 17°C (63°F), reaching a maximum of 25°C (78°F). However, it experiences significantly higher rainfall, totaling 190 mm (7.5 in) spread over 16 days and increased humidity at 74%. For a more detailed look at January’s climate, check out San Antonio weather in January.
In September, the weather showcases a warm transition into autumn, with temperatures ranging from a minimum of 11°C (51°F) to a maximum of 28°C (82°F) and an average of 19°C (66°F). However, it also experiences a modest amount of rainfall, totaling 58 mm (2.3 in) over about 11 days, accompanied by a humidity level of 69%. In contrast, February is slightly cooler, with temperatures fluctuating between 10°C (50°F) and 26°C (79°F), averaging at 18°C (64°F). Notably, February is much wetter, boasting 312 mm (12.3 in) of precipitation spread across 20 days and a slightly higher humidity of 71%. For more detailed weather patterns, you can check out San Antonio weather in February.
September and March exhibit noticeable differences in weather patterns. In September, temperatures range from a minimum of 11°C (51°F) to a maximum of 28°C (82°F), with an average of 19°C (66°F). The month sees moderate precipitation of 58 mm (2.3 in) spread over 11 days, accompanied by a humidity level of 69%. In contrast, March's temperatures are slightly cooler, with a minimum of 10°C (50°F), an average of 17°C (64°F), and a maximum of 26°C (79°F). However, March is significantly wetter, experiencing 394 mm (15.5 in) of precipitation over 26 days, resulting in higher humidity at 78%. For more detailed information, check out San Antonio weather in March.
When comparing the weather in September and April, we notice several key differences. September tends to be warmer, with average temperatures hovering around 19°C (66°F), peaking at a maximum of 28°C (82°F), while April averages 18°C (64°F) with a maximum of 25°C (78°F). In terms of precipitation, April is significantly wetter, receiving 279 mm (11.0 in) over 25 days compared to September's 58 mm (2.3 in) over just 11 days. Additionally, April exhibits higher humidity levels at 81% compared to September's 69%. For a detailed look at April weather specifics, you can refer to San Antonio weather in April.
In comparing the weather of September and May, it's clear that both months have their distinct characteristics. September typically features milder temperatures, with a minimum of 11°C (51°F), an average of 19°C (66°F), and a maximum of 28°C (82°F). In contrast, May has slightly warmer temperatures, ranging from a minimum of 12°C (54°F) to a maximum of 26°C (79°F), although its average is lower at 18°C (64°F).
One significant difference lies in precipitation; May is considerably wetter, receiving 190 mm (7.5 in) of rain over 26 days, compared to September's 58 mm (2.3 in) over 11 days. This results in May having higher humidity levels as well, at 88%, compared to September's 69%. Overall, September offers a drier and warmer experience, while May tends to be cooler and wetter. For more details, you can visit San Antonio weather in May.
September typically enjoys warmer temperatures than June, with average highs reaching 28°C (82°F) compared to June's 25°C (77°F). However, June experiences higher humidity at 85% compared to September's 69%, making it feel more oppressive. Additionally, June sees significantly more rainfall, accumulating 124 mm (4.9 in) over 25 days, while September has milder precipitation levels at 58 mm (2.3 in) across just 11 days. For a more detailed look at specific conditions, you can check out San Antonio weather in June.
In September, the weather shows a slight increase in maximum temperatures compared to July, with highs reaching up to 28°C (82°F) against July's 26°C (79°F). However, the average temperature is marginally higher in July at 18°C (65°F), compared to September's 19°C (66°F). Precipitation is notable in both months, with September experiencing 58 mm (2.3 in) over 11 days, while July sees a heavier total of 76 mm (3.0 in) across 24 days. Humidity levels are also higher in July at 75% compared to September's 69%. For a more detailed look at July weather, check out San Antonio weather in July.
September's weather exhibits slightly warmer temperatures compared to August, with an average of 19°C (66°F) and a maximum of 28°C (82°F), whereas August has a slightly cooler average of 18°C (65°F) and a maximum of 27°C (81°F). Both months experience comparable minimum temperatures, each starting at around 11°C (51°F in September and 53°F in August). Precipitation levels are relatively close, with September receiving 58 mm (2.3 in) over 11 days of rain, while August sees 61 mm (2.4 in) spread over 16 days. Additionally, September's humidity is slightly higher at 69%, compared to August's 64%. For a detailed look at August's climate, check out San Antonio weather in August.
In September, the weather typically features a mild temperature range with a minimum of 11°C (51°F) and a maximum of 28°C (82°F), making it pleasant for outdoor activities. However, this month also sees a moderate amount of rain with 58 mm (2.3 in) of precipitation over about 11 days, coupled with a humidity level of 69%.
Moving into October, temperatures shift slightly with a minimum of 12°C (53°F) and a maximum of 27°C (81°F), averaging around 18°C (65°F). However, the month is significantly wetter, experiencing 231 mm (9.1 in) of rainfall over 22 days, leading to higher humidity at 80%. For more detailed insights, check out San Antonio weather in October.
In September, temperatures in San Antonio range from a minimum of 11°C (51°F) to a pleasant maximum of 28°C (82°F), with an average temperature of 19°C (66°F). The month typically sees about 58 mm (2.3 in) of precipitation over 11 days, accompanied by a humidity level of 69%. In contrast, November brings slightly cooler temperatures, with averages declining to 17°C (64°F), a range from 11°C (52°F) to a maximum of 26°C (79°F). However, November is significantly wetter, with an impressive 455 mm (17.9 in) of rainfall spread across 27 days, resulting in increased humidity at 85%. For more detailed information, you can check San Antonio weather in November.
In September, the weather is generally mild with temperatures ranging from a minimum of 11°C (51°F) to a maximum of 28°C (82°F), accompanied by an average temperature of 19°C (66°F). It features moderate precipitation with about 58 mm (2.3 in) falling over 11 days, and humidity levels are at 69%. In contrast, December experiences slightly cooler temperatures, with a minimum of 10°C (50°F), an average of 17°C (64°F), and a maximum of 25°C (77°F). However, it is significantly wetter, with precipitation reaching 237 mm (9.3 in) over 21 days and higher humidity at 82%. This shift not only highlights a transition from late summer warmth to cooler, rainier winter conditions but also emphasizes the increased likelihood of wet days in December. For more detailed insights, you can check out San Antonio weather in December.
As September unfolds in San Antonio, it brings a delightful shift in weather compared to the sweltering summer months. The average temperatures gently dip, offering a refreshing reprieve with cooler mornings and mild afternoons. While occasional rain showers grace the landscape on about half the month’s days, this increased humidity envelops the town in a lush vibrancy, highlighting the beauty of the season. Overall, September strikes a balance between warmth and refreshment, making it an ideal time to experience San Antonio's unique climate. For more details, explore the full picture at San Antonio Climate.