Last updated: August 28, 2025
September in Colonia del Sacramento, Uruguay brings a refreshing change as the winter chill begins to fade. With maximum temperatures reaching up to 26°C (79°F) and an average hovering around 15°C (59°F), the pleasant climate invites outdoor exploration. Nights can be cooler, dipping to a minimum of 6°C (43°F). Although this month sees about 77 mm (3.0 in) of rainfall across 6 days, the humidity stays at a comfortable 72%, adding to the overall charm of the season. Whether you’re strolling along the historic streets or relaxing by the river, September offers a delightful balance of warmth and crispness in this picturesque Uruguayan town.
In September, Colonia del Sacramento begins its transition into spring, offering a refreshing change in temperatures. With minimums averaging around 6°C (43°F) and maximums reaching 26°C (79°F), the weather is pleasantly mild, making it perfect for outdoor exploration. The average temperature hovers at 15°C (59°F), providing a comfortable balance for both locals and visitors alike. This month marks a noticeable shift from the chill of winter, gradually paving the way for warmer days ahead. As flora comes alive and the city buzzes with energy, September invites everyone to enjoy its temperate climate while soaking in the charm of this historic Uruguayan gem.
In September, Colonia del Sacramento experiences a moderate precipitation level of 77 mm (3.0 in) spread over 6 days, marking a slight increase compared to the drier months of August and June. This month serves as a transition into spring, with rains becoming more frequent as the landscape awakens. While the precipitation is higher than in the preceding months, it remains lower than the wetter months of July and October, suggesting a balanced climate that offers a mix of sunny days and refreshing showers. This pattern indicates a rhythm of moisture that supports the vibrant flora, contributing to the region's lush beauty as it moves into warmer weather.
As September rolls into Colonia del Sacramento, Uruguay, the air begins to shift, with humidity averaging around 72%. This marks a slight decline from the peak levels seen in the preceding months, as the region transitions from its more humid winter season. Following a summer peak in January at just 50%, humidity steadily climbs, reaching a high of 85% in May. After the dampness of late autumn, September offers a breath of fresh air, presenting a pleasant middle ground that hints at the arrival of spring. While humidity does decrease in October to 63%, September provides a comfortable environment for enjoying the charming streets and scenic waterfront of this historic city.
In September, Colonia del Sacramento experiences a UV Index of 8, categorized as very high, indicating that sun protection is essential. This marks an upward trend from the moderate levels seen during the winter months, which saw indices around 4. As spring approaches, the burn time decreases to just 15 minutes, signaling the need for vigilance even on cloudy days. By observing this shift, it's clear that as temperatures rise in the Southern Hemisphere, so does the intensity of UV radiation. Whether exploring the picturesque streets or relaxing by the river, be sure to prioritize your skin's safety and stay informed about the local conditions by checking the details at Colonia del Sacramento UV Index.
UV Risk Categories
As September arrives in Colonia del Sacramento, Uruguay, the sun generously graces the town with 251 hours of sunshine, marking a gradual transition to the warmer months. This modest amount of daylight follows the cooler winter months of June and July, where sunshine plummeted to just 206 hours. As we move from the peak of summer, with January basking in a striking 300 hours, September presents a reliable balance, hinting at the vibrant activities to come in the spring. The steady increase in daylight hours throughout the year showcases a rhythmic dance of changing seasons, drawing both locals and visitors to enjoy the historical charm of this picturesque coastal town under the soft embrace of the sun.
As we transition into September in Colonia del Sacramento, Uruguay, the likelihood of sunny weather dips to 40%, marking it as the month with one of the lowest chances of sunshine. This decrease follows the relatively bright months of August and July, where the sun made a more prominent appearance with chances of 63% and 62%, respectively. Interestingly, September serves as a precursor to a sunny October, which boasts a 69% chance of clear skies. Overall, while September might not be the sunniest month, it does position itself as an essential point on the journey toward the warmer and brighter days of spring.
In September, Colonia del Sacramento, Uruguay, experiences a refreshing shift as daylight extends to 11 hours, signaling the gradual transition from winter to spring. This slight increase in sunlight follows the minimal daylight of 9 hours in June, showcasing the region's rhythm as daylight begins to rebound. Moving forward, the days will continue to lengthen, culminating in the warmth of summer with 14 hours of daylight in January. This trend not only enhances the beauty of the historic town but also invites both locals and travelers to embrace the outdoor activities that flourish with the arrival of longer, brighter days.
As September rolls into Colonia del Sacramento, Uruguay, the breeze begins to pick up, with an average wind speed of 5.4 m/s (12 mph), making it one of the windiest months of the year. This invigorating gust contrasts with the gentle winds of August, which languished at a mere 3.8 m/s (8 mph). The trend of increasing wind speeds in early spring hints at the transition towards summer, setting the stage for the slightly breezy days ahead in October and November, both averaging around 5.3 m/s (12 mph). The winds of September not only breathe life into the picturesque streets of Colonia but also signal the changing seasons, inviting both locals and visitors to embrace the outdoor charm of this coastal gem.
Weather in Colonia del Sacramento varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Colonia del Sacramento, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present distinctly different weather patterns. In September, temperatures range from a cool minimum of 6°C (43°F) to a comfortable average of 15°C (59°F), peaking at a warm 26°C (79°F). The month experiences about 77 mm (3.0 in) of precipitation over approximately 6 days, with humidity levels at 72%, often making the air feel damp and cooler. In contrast, January boasts much higher temperatures, with a minimum of 15°C (60°F) and an average of 24°C (76°F), reaching scorching highs of 37°C (99°F). Although precipitation is slightly lower at 73 mm (2.9 in) and similarly occurs over 6 days, January's humidity is notably lower at 50%, contributing to a hotter and more oppressive atmosphere. For a closer look at January's climate, you can check out Colonia del Sacramento weather in January.
In September, the weather is noticeably cooler, with temperatures ranging from a minimum of 6°C (43°F) to a maximum of 26°C (79°F) and an average of 15°C (59°F). It experiences about 77 mm (3.0 in) of precipitation over an average of 6 days, accompanied by a humidity level of 72%. In contrast, February brings significantly warmer conditions, with temperatures starting at 14°C (57°F), averaging 23°C (74°F), and peaking at a maximum of 33°C (92°F). February also sees slightly higher precipitation at 86 mm (3.4 in) over about 8 days but has a lower humidity level of 61%. For more detailed insights, you can check Colonia del Sacramento weather in February.
When comparing the weather in September to that of March, notable differences emerge. September tends to be cooler, with average temperatures ranging from a minimum of 6°C (43°F) to a maximum of 26°C (79°F), while March offers milder conditions with minimums of 12°C (53°F) and maximums reaching up to 32°C (90°F). Precipitation is similar between the two months, with September receiving 77 mm (3.0 in) over 6 days and March seeing slightly higher levels at 85 mm (3.4 in) across 7 days. Additionally, humidity levels are higher in September at 72%, compared to 66% in March. For a more detailed look at March weather, you can check out Colonia del Sacramento weather in March.
September and April present contrasting weather patterns, reflecting the transition between seasons. In September, temperatures range from a minimum of 6°C (43°F) to a maximum of 26°C (79°F), with an average of 15°C (59°F). The month sees about 77 mm (3.0 in) of precipitation over approximately 6 days, accompanied by a humidity level of 72%. In contrast, April typically offers warmer conditions with a minimum of 9°C (49°F) and a maximum of 30°C (85°F), averaging around 19°C (66°F). Precipitation is slightly lower at 74 mm (2.9 in) but occurs over a similar number of days (7), and the humidity is slightly higher at 80%. For a detailed look at the April weather, check out Colonia del Sacramento weather in April.
In comparing the weather patterns of September and May, both months share similar temperature ranges with minimums around 6°C (43°F) and averages near 15°C (59°F). However, September tends to be slightly warmer with a maximum of 26°C (79°F) compared to May's 24°C (76°F). Precipitation levels are comparable, with September receiving 77 mm (3.0 in) over 6 days and May experiencing slightly less at 76 mm (3.0 in) over 7 days. The humidity plays a notable role as well, with May being more humid at 85%, compared to September's 72%. For a closer look at the specific weather conditions in May, you can refer to this link: Colonia del Sacramento weather in May.
When comparing the weather in September and June, September tends to be warmer overall. The average temperature in September is 15°C (59°F) compared to June's 12°C (55°F), with September reaching a maximum of 26°C (79°F) while June peaks at 23°C (74°F). Additionally, September experiences slightly more precipitation, totaling 77 mm over 6 days, compared to June's 61 mm over 7 days. Humidity levels are relatively similar, with June at 80% and September at 72%. For a closer look at conditions during June, you can check out Colonia del Sacramento weather in June.
When comparing the weather in September and July, September tends to be warmer, with average temperatures reaching 15°C (59°F) compared to July's average of 11°C (52°F). The maximum temperatures also rise to 26°C (79°F) in September, while July peaks at 24°C (75°F). Precipitation is slightly lower in September, with 77 mm (3.0 in) over 6 days, compared to 90 mm (3.5 in) over 9 days in July. Additionally, humidity is a bit higher in September at 72%, while July has a slightly lower humidity level of 69%. For a detailed look at July's weather, you can refer to Colonia del Sacramento weather in July.
In comparing the weather between August and September, September tends to be noticeably warmer, with average temperatures rising from 13°C (55°F) in August to 15°C (59°F). The maximum temperatures also increase, reaching 26°C (79°F) in September, compared to a peak of 22°C (73°F) in August. Additionally, September experiences slightly more precipitation, with 77 mm (3.0 in) over 6 days, compared to 59 mm (2.3 in) during the same number of days in August. Humidity is also higher in September at 72%, compared to 66% in August. For more detailed information on August weather, you can check Colonia del Sacramento weather in August.
In September, the weather presents a mild range of temperatures, with minimums around 6°C (43°F) and maximums reaching up to 26°C (79°F). The month experiences an average temperature of 15°C (59°F) along with 77 mm (3.0 in) of precipitation over approximately 6 days, leading to a relatively humid atmosphere at 72%.
In contrast, October sees a slight increase in temperatures, starting at a minimum of 9°C (48°F) and soaring to a maximum of 31°C (87°F), with an average temperature of 17°C (63°F). However, October brings a bit more rain, with 90 mm (3.6 in) of precipitation spread over 9 days, and a drop in humidity to 63%. For a more detailed look at the October weather in Colonia del Sacramento, you can visit Colonia del Sacramento weather in October.
September and November present distinct weather patterns, with November generally being warmer and more humid. In September, temperatures range from a cool minimum of 6°C (43°F) to a comfortable maximum of 26°C (79°F), averaging around 15°C (59°F). The month sees 77 mm (3.0 in) of precipitation over about 6 days, with humidity hovering at 72%. In contrast, November features a milder temperature range, with a minimum of 11°C (52°F) and a maximum reaching 31°C (87°F), averaging 20°C (69°F). Precipitation decreases slightly to 61 mm (2.4 in) over the same number of rainy days, while humidity drops to 59%. For more detailed insights, check out Colonia del Sacramento weather in November.
In September, the weather is characterized by milder temperatures, with a minimum of 6°C (43°F), an average of 15°C (59°F), and a maximum of 26°C (79°F). The month sees around 77 mm (3.0 in) of precipitation over six days, contributing to a relatively humid atmosphere with 72% humidity. In contrast, December brings warmer temperatures, ranging from a minimum of 11°C (51°F) to a maximum of 33°C (93°F), with an average of 22°C (73°F). Although December has slightly less precipitation at 66 mm (2.6 in) over the same number of days, the humidity drops to 56%. Overall, December offers warmer and drier conditions compared to the cooler, more humid September. For more detailed insights, check out Colonia del Sacramento weather in December.
September in Colonia del Sacramento marks a transition into spring, offering a refreshing embrace as temperatures gradually rise. With mild averages and a mix of sunny days and occasional rain, this month stands out from the typically warmer months of December through February. While the cooler mornings hint at the lingering winter air, the increasing daytime warmth makes it an ideal time for outdoor exploration. The moderate humidity adds a gentle touch, contributing to the region’s lush scenery. For more insights into the weather throughout the year, explore Colonia del Sacramento Climate.