Last updated: August 28, 2025
In Piriápolis, Uruguay, September ushers in a blend of mild temperatures and refreshing humidity, making it a unique time to experience this coastal gem. With maximum daytime temperatures reaching 27°C (82°F) and an average of 14°C (57°F), the weather offers a pleasant atmosphere for outdoor activities. However, the month also sees a cooler minimum of 3°C (38°F), inviting layers in the early mornings and evenings. Expect approximately 86 mm (3.4 in) of rainfall over 7 days, creating a lush landscape while maintaining a 76% humidity that emphasizes the vitality of spring.
In September, Piriápolis, Uruguay, experiences a gentle transition from the chill of winter to the warmth of spring. With minimum temperatures around 3°C (38°F) and average highs reaching 27°C (82°F), the month showcases a pleasant climate perfect for outdoor exploration. This time of year marks a notable shift, as the average temperature climbs to 14°C (57°F), hinting at the vibrant festivities and blooming landscapes to come in the following months. Overall, September's weather reflects a delicate balance, offering chilly mornings that give way to comfortably warm afternoons, making it an ideal time to enjoy nature's awakening.
September in Piriápolis, Uruguay, typically sees moderate rainfall, with an average precipitation of 86 mm (3.4 in) over approximately 7 days of the month. This consistency places September in line with the preceding months of winter, where rainfall tends to be slightly higher, such as in June and July. As the region transitions into spring, the weather remains relatively damp, though the precipitation level dips compared to the winter months. With an average of 8 rainy days in the late winter months, September's rainfall provides a refreshing breath of life to the landscape, setting the stage for the warmer and drier months ahead.
In Piriápolis, Uruguay, September ushers in a notable shift in humidity, resting at a comfortable 76%. This month serves as a transitional period, showcasing a gradual decrease from the higher levels experienced in late autumn. Following the peak humidity values of 82% in May and 79% in April, September's levels provide a pleasant reprieve as summer approaches. The humidity aligns closely with the levels seen in the prior months of August and July (both at 72%), suggesting a mild and inviting climate. As October rolls in, humidity dips slightly to 71%, illustrating the ongoing cycle of seasonal change that characterizes this coastal locale.
In September, the UV Index in Piriapolis, Uruguay, reaches 8, categorized as very high, with a recommended burn time of just 15 minutes. This marks a transition from the milder UV levels of the winter months, as the index begins to climb again, following the trend seen in the warmer months of the year. Such intense UV radiation serves as a reminder for residents and visitors to take appropriate precautions, especially after spending several months enjoying lower exposure risks. As the season shifts toward summer, sun protection is essential for safe outdoor activities. For more detailed information on UV trends, visit Piriapolis UV Index.
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As September arrives in Piriápolis, Uruguay, residents and visitors alike can bask in the delightful 258 hours of sunshine, a welcome change as the winter chill recedes. This month marks a shift towards longer days, as the sunshine begins to rival the vibrant days of summer. Following a modest August, which offered 241 hours, the gradual increase in daylight sets the stage for anticipation of warmer, more radiant months ahead. Interestingly, September serves as a bridge, showcasing a light yet significant uptick in sunlight compared to the preceding winter months while hinting at the peak brightness of November, which boasts an impressive 343 hours. Embrace the golden hues of September as they herald the approach of Uruguay's sun-soaked summer!
In September, Piriapolis, Uruguay, tends to experience a lower likelihood of sunny weather, with the chance of sunshine dropping to just 34%. This marks a notable decline compared to the warmer months, where January boasts a 60% chance. As the seasons transition, the emerging patterns suggest that while late spring months like October see a rebound to 65%, the early transition of September might feel rather cloudy. This trend highlights September as a more uncertain time for sun-seekers, contrasting sharply with the sunnier days that follow. If you're planning a visit during this month, it's wise to pack for varying weather conditions!
In September, Piriápolis experiences a revival of daylight, with the sun gracing the sky for approximately 11 hours each day. This marks a gentle transition from the shorter days of winter in June and July, where daylight dwindled to just 9 hours. As the month progresses, residents and visitors alike can enjoy the gradual lengthening of daylight, heralding the approach of spring. The trend of increasing daylight continues into October, reaching 12 hours, fostering a sense of warmth and inviting outdoor activities as nature begins to bloom once more. This shift not only enhances the beauty of Piriápolis but also lifts spirits, making September a delightful time to soak in the scenic vistas and vibrant atmosphere of this coastal gem.
As September arrives in Piriápolis, the wind begins to reclaim its voice, whispering at an average speed of 4.6 m/s (10 mph). This month sees a notable increase from the more subdued breezes of August, where the average dipped to 3.4 m/s (8 mph). September's winds reflect a transition, reconnecting with the slightly brisker gusts seen earlier in the year, echoing those of May and November, which also boast similar speeds. With the wind's rhythmic pulse, September offers a refreshing contrast to the calmer summer months, inviting locals and visitors alike to enjoy the crisp coastal air as the season shifts.
Weather in Piriapolis varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Piriapolis, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather tends to be quite mild, with temperatures ranging from a minimum of 3°C (38°F) to a maximum of 27°C (82°F) and an average of 14°C (57°F). This month experiences relatively high humidity at 76% and sees about 86 mm (3.4 in) of precipitation over approximately 7 days. In contrast, January boasts warmer temperatures, with a minimum of 11°C (52°F), an average of 23°C (73°F), and a peak of 38°C (101°F). The precipitation in January is slightly lower at 70 mm (2.8 in) spread over 6 days, and humidity also decreases to 63%. For a more detailed look at the January weather in Piriapolis, you can check out Piriapolis weather in January.
September and February present contrasting weather experiences. In September, temperatures range from a chilly minimum of 3°C (38°F) to a pleasant average of 14°C (57°F), peaking at a warm 27°C (82°F), while humidity hovers at a relatively high 76%. This month also sees moderate rainfall, with around 86 mm (3.4 in) over approximately 7 days. In contrast, February offers much warmer conditions, with minimum temperatures starting at 11°C (52°F) and soaring to an average of 22°C (72°F) and a maximum of 33°C (91°F). Despite slightly higher precipitation at 88 mm (3.5 in) spread over 10 days, the humidity is lower at 69%. This makes February feel more comfortable and summery compared to the early spring feel of September. For more details, you can check Piriapolis weather in February.
In September, the weather is relatively cooler, with temperatures ranging from a minimum of 3°C (38°F) to a maximum of 27°C (82°F) and an average of 14°C (57°F). This month experiences considerable rainfall, with 86 mm (3.4 in) of precipitation spread over 7 days and humidity levels around 76%. In contrast, March offers warmer conditions, featuring minimum temperatures of 11°C (52°F) and maximum temperatures reaching 32°C (89°F), with an average of 20°C (69°F). The precipitation is slightly lower at 68 mm (2.7 in), occurring over 8 days, and humidity remains a bit lower at 73%. For a detailed look at the weather specifics in March, you can explore this link: Piriapolis weather in March.
In comparing the weather between September and April, we observe notable differences in temperature and humidity levels. September features a minimum temperature of 3°C (38°F) and an average of 14°C (57°F), with a maximum of 27°C (82°F), while April starts at a higher minimum of 8°C (47°F) and reaches an average of 18°C (65°F) and a peak of 32°C (89°F). Though both months experience similar levels of precipitation—September with 86 mm (3.4 in) and April with 81 mm (3.2 in)—the humidity is slightly higher in April at 79%, compared to September's 76%. For a detailed overview of April weather, you can visit Piriapolis weather in April.
In September, temperatures range from a chilly minimum of 3°C (38°F) to a comfortable maximum of 27°C (82°F), averaging around 14°C (57°F). The month sees a total precipitation of 86 mm (3.4 in) over about 7 days, along with a humidity level of 76%. In contrast, May experiences slightly warmer conditions, with minimum temperatures around 5°C (41°F) and maximums reaching 26°C (79°F), averaging 15°C (59°F). Precipitation in May is slightly less at 84 mm (3.3 in) over 8 days, accompanied by a higher humidity of 82%. For those interested in a detailed look at May weather, you can check out Piriapolis weather in May.
When comparing the weather in September and June, there are notable differences in temperature and precipitation patterns. September tends to be slightly warmer, with average temperatures ranging from a minimum of 3°C (38°F) to a maximum of 27°C (82°F), while June records a lower average temperature with a minimum of 2°C (36°F) and a maximum of 25°C (78°F). In terms of precipitation, June experiences more rainfall, totaling 115 mm (4.5 in) over 10 days, compared to September's 86 mm (3.4 in) across 7 days. Humidity levels are also a bit higher in June at 80%, compared to 76% in September. For those interested in specifics, you can find more details at Piriapolis weather in June.
When comparing the weather in September to that of July, we see a notable increase in average temperatures and slight variations in precipitation. September boasts a minimum temperature of 3°C (38°F) and an average of 14°C (57°F), while July features a lower minimum of 2°C (35°F) and an average of 11°C (52°F). The maximum temperature in September reaches 27°C (82°F), compared to July's 26°C (79°F). In terms of rainfall, September experiences 86 mm (3.4 in) over 7 days, which is slightly less than July's 103 mm (4.0 in) across 11 days. Interestingly, September maintains a higher humidity level at 76%, compared to July's 72%. For more details on July weather, check out Piriapolis weather in July.
In September, the weather shows a noticeable increase in temperatures compared to August, with minimums averaging 3°C (38°F) and maximums reaching 27°C (82°F), compared to August's min of 1°C (34°F) and max of 25°C (77°F). The average temperature in September is 14°C (57°F), up from August's 12°C (54°F). While both months experience similar levels of precipitation—September with 86 mm (3.4 in) over 7 days and August with 91 mm (3.6 in) over 8 days—the humidity is slightly higher in September at 76%, compared to August's 72%. For more detailed insights, you can explore Piriapolis weather in August.
September and October exhibit a gradual transition in weather patterns. In September, temperatures range from a minimum of 3°C (38°F) to a maximum of 27°C (82°F), with an average of 14°C (57°F) and a higher humidity level at 76%. The month sees about 86 mm (3.4 in) of rainfall spread over 7 days. In contrast, October shows slightly warmer temperatures with a minimum of 4°C (39°F) and a maximum of 30°C (86°F), culminating in an average of 16°C (60°F). Precipitation decreases slightly to 82 mm (3.2 in) but is observed over a slightly longer duration of 9 days, and humidity drops to 71%. For those interested in specific conditions during this transition, you can check Piriapolis weather in October.
September and November present contrasting weather patterns. In September, temperatures range from a chilly minimum of 3°C (38°F) to a pleasant average of 14°C (57°F), peaking at a warm 27°C (82°F). This month experiences about 86 mm (3.4 in) of precipitation over seven days, combined with a relatively high humidity of 76%. In contrast, November sees a significant increase in temperature, with a minimum of 7°C (45°F) and an average of 19°C (66°F), reaching a maximum of 33°C (91°F). Precipitation decreases to 60 mm (2.4 in) over the same number of days, and humidity drops slightly to 68%. For more detailed information about November weather, visit Piriapolis weather in November.
In September, the weather is characterized by cooler temperatures, with a minimum of 3°C (38°F) and an average of 14°C (57°F), while the maximum can reach 27°C (82°F). This month also experiences higher humidity at 76% and more frequent precipitation, totaling 86 mm (3.4 in) over about 7 days. Conversely, December offers a warmer climate, with minimum temperatures rising to 9°C (48°F) and an average of 21°C (70°F), peaking at 34°C (93°F). Additionally, December sees reduced precipitation at 61 mm (2.4 in) over 6 days and lower humidity at 65%. For a closer look at the December climate specifics, check out the Piriapolis weather in December.
As September unfolds in Piriápolis, it heralds the transition from winter to spring, offering a refreshing change that sets it apart from the colder months. Temperatures begin to rise, reaching comfortable averages that beckon both locals and visitors outdoors, yet the air still carries a hint of crispness. With about a week of precipitation, the landscape flourishes, and the increased humidity wraps the town in a gentle embrace, making the scenery lush and vibrant. This blend of mild temperatures and occasional rain distinguishes September, creating an inviting atmosphere as Piriápolis prepares for the warmer days ahead. For a deeper dive into the climate patterns, explore Piriapolis Climate.