Last updated: August 21, 2025
In September, La Plata, Argentina experiences a dynamic shift in weather as the grip of winter begins to loosen. The maximum temperature can reach a pleasant 28°C (82°F), while the average settles around a mild 14°C (57°F), offering a comfortable atmosphere for outdoor activities. However, the month can also bring a noticeable chill with minimum temperatures dipping to 1°C (34°F). With precipitation totaling 76 mm (3.0 in) across approximately 6 days, the humidity level hovers at 72%, creating a fresh and invigorating climate. September is a transitional month, beautifully balancing cool breezes and warm sunny days, making it an ideal time to explore the vibrant city and its surroundings.
As September rolls into La Plata, Argentina, the city begins to shake off the winter chill, ushering in a refreshing change in temperatures. The month starts with a crisp minimum of 1°C (34°F), warming up to an average of 14°C (57°F), and peaking at a comfortable 28°C (82°F). This marks a clear transition from the cold winter months, where temperatures hovered around freezing, towards the balmy embrace of spring. As days grow longer and warmer, outdoor activities become more inviting, making September a delightful time for both locals and visitors to enjoy the blooming beauty of the city.
September marks a notable uptick in rainfall for La Plata, Argentina, with 76 mm (3.0 in) of precipitation spread over 6 days. This increase not only surpasses the drier months of August but also sets the stage for a wetter October, which follows closely with 78 mm (3.1 in). As the spring season unfolds, the shift from the lower rainfall patterns of winter to a more humid climate is apparent, bringing refreshing showers that invigorate the surrounding landscape. This trend suggests a transition toward greater precipitation as spring advances, providing much-needed nourishment for the region after the comparatively dry month of August.
In September, La Plata experiences a notable shift in humidity levels, reaching 72%. This marks a decrease from the peak humidity of 85% in May, while still reflecting the lingering effects of the winter months. The transition into spring is evident as humidity starts to lower from August’s 66%, setting the stage for drier and more vibrant conditions ahead. Overall, September's humidity highlights a gradual progression towards more moderate levels, hinting at the changing seasons and the forthcoming warmth of October, when humidity further declines to 63%. This trend illustrates La Plata's dynamic climate, evolving from winter's embrace to the brighter days of spring.
As September rolls into La Plata, Argentina, the UV Index typically signals a shift toward intensified sun exposure, landing at a notable 8 on the scale, categorized as very high. This emphasizes the importance of outdoor precautions, with a burn time of only 15 minutes under direct sunlight. Following the more moderate summer months, the UV levels begin to rise, hinting at transitioning from the tail end of winter into the warmer spring climate. This trend continues into October, where the UV Index climbs to 10, reinforcing the need for sun protection as the days grow longer and brighter. For those planning outdoor activities, staying informed is essential; you can learn more about the UV Index in La Plata here.
UV Risk Categories
As September unfolds in La Plata, Argentina, residents can bask in 257 hours of sunshine, offering a gentle transition from the winter months. While this sun-kissed month sees slightly less light than August, it still stands out as a bridge between the cooler seasons and the vibrant warmth of spring. Following the gradual decrease in daylight from June to July, September marks a resurgence of brightness that will soon culminate in the sun-drenched heights of October, which welcomes 306 hours of sunshine. This upward trend not only signals the arrival of longer days but also brings a renewed sense of vitality, setting the stage for the more radiant months ahead, particularly November with its impressive 342 hours of sunshine.
In La Plata, Argentina, the likelihood of sunny weather in September tends to dip, with a 40% chance of sunshine, marking it as one of the less favorable months for sunny skies. This lower probability follows the trend of relatively sunnier months in the winter and late summer, where the chances hover around the 60% mark. As August wraps up with a 62% chance of sun, September ushers in a more overcast tone before the weather brightens again in October at 67%. Those hoping for sunny days might want to plan activities with the knowledge that September may not be the most reliable month for enjoying the sun in this charming city.
As September rolls in La Plata, Argentina, the daylight begins to subtly shift, offering 11 hours of sunlight that balance the lingering warmth of winter with the promise of spring. This month marks a transition, as daylight hours crested and dipped from a lengthy 14 hours in January to a minimal 9 hours in June. After the mid-year slump, September reflects a gentle reawakening, hinting at longer days ahead with October bringing 12 hours of daylight. The slow but steady return of light not only revitalizes the environment but also uplifts the spirits of those anticipating the vibrant blooms and lively days that spring will soon unveil.
As the seasons transition into September in La Plata, Argentina, the average wind speed picks up, reaching 4.5 m/s (10 mph), which marks it as one of the breeziest months of the year. This slight uptick in wind currents contrasts with the relatively calmer August, boasting a modest 3.2 m/s (7 mph), while also aligning with the more robust winds of earlier months, such as July and November, each also at 4.5 m/s. The patterns reveal a dynamic wind environment, with September signaling a return to invigorating breezes that precede the warmer months, creating a lively atmosphere as the city prepares for the blossoming spring. Overall, the September winds in La Plata add a refreshing touch, inviting residents and visitors alike to enjoy the outdoors amidst a delightful interlude of nature's breath.
Weather in La Plata varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in La Plata, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather features a more moderate temperature range, with minimums around 1°C (34°F) and maximums reaching up to 28°C (82°F), resulting in an average of 14°C (57°F). The month experiences higher humidity at 72% and receives about 76 mm (3.0 in) of precipitation over approximately 6 days. In contrast, January showcases significantly warmer conditions, with minimum temperatures of 11°C (52°F) and soaring highs of up to 41°C (105°F), bringing the average temperature to 24°C (76°F). Though it has slightly less precipitation at 68 mm (2.7 in) across the same six days, January enjoys much drier air with humidity dropping to 50%. For more detailed insights into January’s weather, visit La Plata weather in January.
September and February present distinct differences in weather characteristics. In September, temperatures range from a chilly 1°C (34°F) at night to a comfortable 28°C (82°F) during the day, with an average of 14°C (57°F). This month experiences about 76 mm (3.0 inches) of precipitation over roughly 6 days, along with a humidity level of 72%. In contrast, February boasts much warmer conditions, with a minimum of 9°C (49°F) and a maximum reaching 35°C (96°F), averaging at 23°C (74°F). Although precipitation decreases to 61 mm (2.4 inches) over 8 days, the humidity is lower at 61%. For more detailed weather insights for February, visit La Plata weather in February.
The weather in September and March exhibits notable differences, reflecting the transition from late winter to early spring and the onset of early autumn. In September, temperatures range from a cool minimum of 1°C (34°F) to a comfortable maximum of 28°C (82°F), with an average of around 14°C (57°F). The month sees a total precipitation of 76 mm (3.0 in) over six days, accompanied by a higher humidity level of 72%.
Conversely, March tends to be warmer and more humid, with temperatures ranging from a minimum of 7°C (45°F) to a maximum of 33°C (93°F), averaging 21°C (70°F). While March has slightly lower precipitation at 65 mm (2.5 in) over seven days, its humidity is lower at 66%, creating a drier feel compared to September. For more detailed weather information, you can visit La Plata weather in March.
September and April exhibit distinct weather patterns, presenting a transition from the cooler end of the year to the warmth of spring. In September, temperatures range from a minimum of 1°C (34°F) to a maximum of 28°C (82°F), with an average of 14°C (57°F). The month receives about 76 mm (3.0 in) of precipitation over six days, and the humidity levels sit at around 72%. In contrast, April sees warmer conditions, featuring a minimum of 4°C (39°F) and a maximum of 31°C (87°F), with an average temperature of 18°C (65°F). It has a similar precipitation level of 74 mm (2.9 in) but spans over eight days, and humidity is slightly higher at 80%. For more details on April weather, you can refer to La Plata weather in April.
When comparing the weather in September and May, both months exhibit mild temperatures, with September having a slight edge in maximum temperature at 28°C (82°F) compared to May's 27°C (80°F). The average temperature remains similar between the two months, around 14°C (57°F to 58°F). However, September experiences slightly more precipitation at 76 mm (3.0 in) over 6 days, while May has 69 mm (2.7 in) with the same number of rainy days. Additionally, humidity levels are higher in May at 85%, compared to 72% in September, making May feel a bit more humid. For a closer look at the weather specifics for May, check out La Plata weather in May.
In comparing the weather between September and June, September typically showcases a broader range of temperatures, with minimums around 1°C (34°F) and maximums reaching up to 28°C (82°F). In contrast, June experiences slightly cooler weather, with minimums dipping to -1°C (30°F) and maximums peaking at 24°C (76°F). Precipitation is somewhat higher in September at 76 mm (3.0 in) compared to June's 59 mm (2.3 in), although both months see a similar number of rainy days (6 in September and 7 in June). Humidity levels are also comparable, with September at 72% and June slightly higher at 80%. For more information, you can check La Plata weather in June.
When comparing the weather in September to July, it's evident that September tends to be warmer with an average temperature of 14°C (57°F) and a maximum of 28°C (82°F), whereas July has a cooler average of 10°C (51°F) and a maximum of 25°C (77°F). Additionally, September experiences slightly more precipitation, with 76 mm (3.0 in) over 6 days, compared to July's 64 mm (2.5 in) over 8 days. Humidity levels are relatively similar, with September at 72% and July at 69%. For further details on July's conditions, you can visit La Plata weather in July.
In comparing the weather between September and August, September experiences a broader range of temperatures, with minimums of 1°C (34°F) and maximums reaching 28°C (82°F), resulting in an average of 14°C (57°F). In contrast, August is cooler, featuring minimum temperatures of -2°C (29°F) and maximums of 25°C (76°F), with an average of 12°C (53°F). Additionally, September sees more precipitation, accumulating 76 mm (3.0 in) over six days, compared to August’s 48 mm (1.9 in) over five days. Humidity levels are also higher in September at 72%, compared to 66% in August. For more detailed insights, you can check La Plata weather in August.
September and October showcase a transition in weather patterns. In September, temperatures range from a chilly 1°C (34°F) to a pleasant 28°C (82°F), with an average of 14°C (57°F). Precipitation is moderate, with 76 mm (3.0 in) falling over 6 days, and humidity sits at a relatively high 72%.
In contrast, October experiences slightly warmer conditions, with minimum temperatures of 3°C (38°F) and maximums reaching 34°C (93°F), yielding an average of 16°C (62°F). Although precipitation increases marginally to 78 mm (3.1 in) over 9 days, humidity drops to 63%, making for a bit more comfortable atmosphere. For more detailed insights, visit La Plata weather in October.
In September, temperatures range from a cool minimum of 1°C (34°F) to a warm maximum of 28°C (82°F), with an average temperature of 14°C (57°F). The month sees about 76 mm (3.0 in) of precipitation over 6 days, accompanied by a relatively high humidity level of 72%. In contrast, November experiences milder conditions, featuring a minimum temperature of 6°C (44°F) and a maximum soaring up to 36°C (97°F), with an average of 20°C (68°F). Precipitation is slightly lower at 64 mm (2.5 in) spread across 8 days, but humidity decreases to 59%. For more detailed information on November weather patterns, check out La Plata weather in November.
In September, temperatures range from a chilly 1°C (34°F) at night to a pleasant 28°C (82°F) during the day, with an average temperature of 14°C (57°F). The month brings about 76 mm (3.0 in) of rainfall over approximately 6 days, coupled with relatively high humidity levels at 72%.
In contrast, December experiences milder nights with temperatures starting at a minimum of 7°C (45°F) and warming up to a maximum of 37°C (98°F), yielding a much higher average temperature of 22°C (73°F). Although precipitation slightly decreases to 71 mm (2.8 in) over 8 days, the humidity dips to a more comfortable 56%. For more detailed information, visit La Plata weather in December.
As September rolls in, La Plata experiences a delightful transition from the lingering chill of winter to the embrace of spring. With temperatures rising noticeably, the month brings a refreshing blend of warmth and humidity, making it a pleasant time to explore the city. However, it also sees a modest amount of rainfall, with a few days dedicated to precipitation. This combination of milder weather and occasional showers creates a unique atmosphere that sets September apart from the more extreme temperatures of summer and the colder months of winter. For a deeper dive into the region's weather patterns throughout the year, check out La Plata Climate.