Last updated: August 21, 2025
In September, Laguna, Brazil, experiences a blend of pleasant temperatures and moderate rainfall, making it a delightful time for visitors. With a maximum temperature reaching 25°C (77°F) and an average of 18°C (65°F), the weather is comfortably warm, perfect for outdoor activities. However, the temperature can drop to a minimum of 13°C (55°F) during the cooler nights. This month also sees 114 mm (4.5 in) of precipitation over 11 days, contributing to the region's lush scenery. Coupled with a high humidity level of 86%, the air feels fresh and invigorating, inviting travelers to embrace the natural beauty of Laguna.
In September, temperatures in Laguna, Brazil begin to shift as the spring season approaches. With minimums around 13°C (55°F) and maximums peaking at 25°C (77°F), the city experiences a gentle warming trend compared to the cooler months of winter. The average temperature settles at a mild 18°C (65°F), offering a pleasant atmosphere that invites outdoor exploration. This transitional month, characterized by its moderate climate, gradually sets the stage for the warmer days ahead, making it an ideal time to enjoy Laguna's natural beauty and vibrant culture.
In September, Laguna, Brazil experiences a notable precipitation amount of 114 mm (4.5 in) spread across 11 days of rainfall. This marks an increase from August's drier conditions, where just 60 mm fell over only 6 days. As the region transitions into spring, September's rainfall serves as a reminder of the changing seasons, setting the stage for the wetter months ahead. Interestingly, the pattern reveals a general upward trend in precipitation after the relatively dry winter, reflecting the region's return to lush greenery and vibrant ecosystems. With October expected to bring even more rainfall at 121 mm (4.8 in), September stands as a crucial bridge, welcoming the rejuvenating embrace of spring.
In September, Laguna experiences a notable rise in humidity, soaring to 86%, which ties it with the peak values seen in May. This uptick marks a seasonal shift as the coastal city transitions into warmer months, following a gradual decline from the higher humidity levels of earlier winter months. The overall trend showcases a late winter retreat, building up towards the humid summer, with humidity levels gradually increasing from 80% in July to an impressive 88% by December. As residents and visitors prepare for the heat that October brings, September's stickiness serves as a reminder of the lush, vibrant landscape that characterizes this beautiful Brazilian locale.
As summer transitions into spring in September, Laguna, Brazil experiences a noticeable shift in its UV index. With a UV index of 10, the exposure category jumps to very high, signaling a return to stronger sun intensity, reminiscent of the peak sun months earlier in the year. Sunbathers should take extra precautions, as the burn time decreases to just 15 minutes—a stark reminder of the area's proximity to the equator. This trend shows how the UV index fluctuates throughout the year, highlighting the importance of sun safety as fall approaches. For more detailed insights on the UV index throughout the year, visit Laguna UV Index.
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In Laguna, Brazil, September marks a transition in daylight as summer gradually wanes, bringing a total of 236 hours of sunshine. While this amount is less than the peak hours experienced in the earlier months of the year, it reflects a cozy shift from the vibrant sun-soaked days of summer. Following a sunny August with 270 hours, September’s sun starts hinting at the approaching autumn, yet still offers ample opportunities for sun-seekers to enjoy the picturesque beaches. As the year progresses towards November's peak of 314 hours of sunshine, it's evident that the sun continues to reign over Laguna, providing a dazzling backdrop to the local culture and scenery throughout the seasons.
In September, Laguna, Brazil, experiences a 33% chance of sunny weather, which reflects a slight dip compared to the summer months. Notably, the peak for sunshine occurs in July at 62%, followed closely by May and February, both of which show higher probabilities of clear skies. As the year transitions into spring, the likelihood of sunny days begins to decrease, which is a common pattern as the region approaches the wetter months. While September does not boast the highest sunshine chances, the pleasant mild weather can still provide opportunities for outdoor activities amid the fleeting sunshine.
In Laguna, Brazil, September marks a subtle transition as daylight duration stabilizes at 11 hours, echoing the trend of the preceding month. Throughout the year, a clear pattern emerges: from the longest days of January and February, boasting 13 hours, daylight gradually shortens, reaching its lowest point at 10 hours during the mid-year months. However, just as summer approaches, days start to stretch again, hinting at the return of longer sunlight as October brings back 12 hours. This rhythm not only influences daily activities but also beautifully encapsulates the changing seasons in this coastal paradise.
As September rolls into Laguna, Brazil, the change in wind patterns becomes increasingly evident. With an average wind speed of 6.1 m/s (14 mph), September marks a noticeable uptick from the calmer months earlier in the year. This increase is part of a broader trend; after the relatively gentle breezes of July and August, which reached 4.8 m/s (11 mph) and 5.4 m/s (12 mph) respectively, September's winds usher in a lively atmosphere along the coast. The invigorating gusts not only enhance the allure of outdoor activities but also signal the onset of a breezy season that continues into October, where the winds remain strong at 6.0 m/s (14 mph). This seasonal shift paints a picture of dynamic climate patterns, setting the stage for exhilarating days filled with the refreshing embrace of the ocean breeze.
Weather in Laguna varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Laguna, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather between September and January, we see distinct seasonal differences. September typically experiences cooler temperatures, with a minimum of 13°C (55°F) and an average of 18°C (65°F), while January boasts warmer conditions, featuring a minimum of 21°C (70°F) and an average of 25°C (77°F). Precipitation is fairly consistent in both months, with September receiving 114 mm (4.5 in) over 11 days and January slightly higher at 118 mm (4.7 in) across 14 days. Humidity levels remain similar, with September at 86% and January slightly lower at 85%. For a more detailed look at January's weather in Laguna, check out Laguna weather in January.
In September, temperatures range from a minimum of 13°C (55°F) to a maximum of 25°C (77°F), with an average of 18°C (65°F). The month experiences considerable rainfall, with 114 mm (4.5 in) of precipitation spread over 11 days, resulting in high humidity levels of 86%. In contrast, February sees warmer conditions, with temperatures ranging from 19°C (67°F) to 31°C (89°F) and an average of 24°C (76°F). Although February has slightly less precipitation, at 104 mm (4.1 in) over 12 days, the humidity remains relatively similar at 84%. For a more detailed overview of February's climate, you can visit Laguna weather in February.
In comparing the weather between September and March, September experiences slightly cooler temperatures with a minimum of 13°C (55°F) and an average of 18°C (65°F), peaking at 25°C (77°F). In contrast, March has warmer conditions, starting at a minimum of 19°C (67°F) and averaging 24°C (75°F), with maximum temperatures reaching 29°C (85°F). Both months see similar precipitation levels—September receives 114 mm (4.5 in) over 11 days, while March has 111 mm (4.4 in) but over a longer stretch of 18 days. Humidity remains relatively high in both months, with September slightly more humid at 86% compared to March's 84%. For more detailed information on the weather in March, visit Laguna weather in March.
In comparing the weather of September and April, September tends to be cooler with average temperatures ranging from a minimum of 13°C (55°F) to a maximum of 25°C (77°F), while April is warmer, featuring average temperatures between 16°C (62°F) and 28°C (82°F). Precipitation is higher in September, with 114 mm (4.5 in) over 11 rainy days, compared to April’s 84 mm (3.3 in) over 13 days. Additionally, humidity levels are similar, with September at 86% and April slightly lower at 83%. For a detailed look at April's weather, you can visit Laguna weather in April.
September and May present similar temperature ranges, with both months starting at a minimum of around 13°C (55°F), but May averages slightly warmer at 20°C (68°F) compared to September's 18°C (65°F). In terms of maximum temperatures, May reaches up to 27°C (81°F), while September peaks at 25°C (77°F). Despite both months experiencing about 11 days of precipitation, May sees a bit more rain with a total of 138 mm (5.4 in), compared to September's 114 mm (4.5 in). Both months also maintain a high humidity level of 86%, contributing to a generally damp feel in the air. For more detailed insights, check out this Laguna weather in May.
In comparing the weather between September and June, both months exhibit similar average temperatures around 18°C (65°F), but with slight variations in their extremes. September tends to be warmer with a maximum of 25°C (77°F) compared to June's 26°C (79°F). However, June experiences slightly cooler minimum temperatures at 10°C (50°F) versus September's 13°C (55°F). Precipitation levels are higher in June, totaling 145 mm (5.7 in) over 9 days, compared to September's 114 mm (4.5 in) over 11 days. Additionally, humidity is marginally higher in September at 86%, while June has a humidity level of 82%. For a more detailed look at the weather in June, you can visit Laguna weather in June.
When comparing the weather in September to that of July, one can notice several key differences. In September, temperatures are generally warmer, with a minimum of 13°C (55°F) and a maximum reaching 25°C (77°F), compared to July’s minimum of 9°C (48°F) and a maximum of 24°C (75°F). Additionally, September experiences higher precipitation, averaging 114 mm (4.5 in) over 11 days, while July has a lower rainfall total of 85 mm (3.4 in) over 9 days. Humidity levels are also higher in September at 86%, compared to 80% in July. For a more detailed view of the July weather specifics, you can check Laguna weather in July.
In comparing the weather of August and September, September tends to be slightly cooler, with average temperatures ranging from 13°C (55°F) to a maximum of 25°C (77°F), while August features a broader range, with minimums at 10°C (50°F) and maximums reaching 30°C (85°F). Additionally, September experiences higher precipitation, totaling 114 mm (4.5 in) over 11 rainy days, compared to August's 60 mm (2.3 in) over just 6 rainy days. Humidity also rises slightly in September to 86%, compared to 81% in August, contributing to a more damp atmosphere as summer transitions into fall. For a detailed look at weather specifics, you can check Laguna weather in August.
September and October showcase a gradual transition in weather conditions. In September, temperatures range from a minimum of 13°C (55°F) to a maximum of 25°C (77°F), with an average of 18°C (65°F). The month sees around 114 mm (4.5 in) of precipitation over 11 days, and humidity levels hover at 86%.
As October arrives, the climate becomes slightly warmer, with minimum temperatures increasing to 16°C (60°F) and maximums reaching 26°C (79°F), while the average temperature rises to 20°C (68°F). Precipitation also increases slightly to 121 mm (4.8 in) over 15 days, accompanied by a minor uptick in humidity to 87%.
For a detailed look at October weather, you can check Laguna weather in October.
In September, the weather tends to be milder with average temperatures around 18°C (65°F) and a maximum of 25°C (77°F). The month experiences significant rainfall, totaling 114 mm (4.5 in) across 11 days, resulting in a high humidity level of 86%. In contrast, November sees slightly warmer average temperatures of 21°C (70°F) and a maximum of 28°C (82°F). Though November still has a fair amount of precipitation at 92 mm (3.6 in) over 12 days, the humidity remains quite similar at 87%. For more detailed insights on November weather, you can visit Laguna weather in November.
September and December exhibit notable differences in weather patterns. In September, temperatures range from a mild minimum of 13°C (55°F) to a comfortable maximum of 25°C (77°F), with an average of 18°C (65°F). The month sees an average precipitation of 114 mm (4.5 in) spread over 11 days, accompanied by a high humidity level of 86%. In contrast, December boasts warmer temperatures, with a minimum of 17°C (63°F) and a maximum of 29°C (85°F), averaging 23°C (73°F). Although precipitation is slightly lower at 110 mm (4.4 in) over 13 days, humidity remains high at 88%. For a detailed look at December weather specifics, check out Laguna weather in December.
As September unfolds in Laguna, it brings a refreshing shift in weather compared to the summer months. With average temperatures settling around a mild 18°C (65°F), visitors can enjoy comfortably cool days and crisp evenings. While humidity remains high, typical of the region, the increased precipitation—spanning over 11 days—adds a much-needed burst of life to the lush landscapes. This transitional month, characterized by its vibrant scenery and moderate climate, sets the stage for the summer heat that follows. For a deeper dive into seasonal weather patterns, explore more at Laguna Climate.