Last updated: August 21, 2025
August in Sao Francisco do Sul, Brazil, presents a captivating climate characterized by warm temperatures and moderate humidity. With maximums reaching 31°C (88°F), the month provides delightful warmth, while average temperatures hover around a comfortable 18°C (64°F). Nights may dip to a cool 5°C (41°F), offering a refreshing contrast. August also brings 70 mm (2.7 in) of rainfall over approximately 10 days, making it a time of lush greenery. The 79% humidity enhances the tropical feel, creating an inviting atmosphere for both residents and visitors alike.
In August, Sao Francisco do Sul experiences a notable cooling trend as winter reaches its peak. With minimum temperatures dipping to around 5°C (41°F) and an average of 18°C (64°F), the climate is considerably milder compared to the hotter summer months. The maximum temperatures hover around a comfortable 31°C (88°F), providing a pleasant balance for outdoor activities. This month marks a transition, as the days begin to warm slightly again, hinting at the arrival of spring. As the cooler air settles in, August serves as a reminder of the region's distinct seasonal shifts, making it an ideal time for visitors seeking to enjoy a refreshing coastal escape.
In August, São Francisco do Sul experiences a modest precipitation total of 70 mm (2.7 in) distributed over 10 days of rainfall. This marks a slight increase from the notably dry July, which saw only 33 mm (1.3 in) across 7 days. The trend reveals a gradual shift toward wetter conditions as the region transitions into the more humid spring months, with September typically bringing a further increase to 106 mm (4.2 in). Overall, while August remains relatively dry compared to the wetter months at either end of the year, its rainfall sets the stage for the increasing precipitation that characterizes the region as it moves into the second half of the year.
In August, Sao Francisco do Sul experiences a noticeable dip in humidity, dropping to 79%. This marks the lowest level of the year, indicating a relative respite from the typically high moisture levels seen in preceding months. Following a trend of elevated humidity that peaks in the summer months, August serves as a transitional period as the region begins to shift towards slightly drier conditions. After August, humidity levels gradually rise again, reflecting the more humid atmosphere that characterizes Brazil's later months, ultimately culminating in the year's peak by December at 88%. This annual fluctuation is a hallmark of the region's coastal climate, with August standing out as a brief but welcome change in the humidity pattern.
In August, Sao Francisco do Sul experiences a UV Index of 8, placing it in the very high exposure category with a recommended burn time of just 15 minutes. Following the trend observed throughout the winter months, the UV Index shows a gradual increase from July's moderate values, hinting at the approach of spring. This month’s UV levels, while not as extreme as the heights seen in early summer, still underscore the importance of sun protection. As the season shifts, it’s essential for residents and visitors alike to stay vigilant, ensuring that they are adequately shielded from solar radiation. For a detailed look at the UV Index throughout the year, explore Sao Francisco do Sul UV Index.
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As the sun graces Sao Francisco do Sul in August, locals bask in an inviting 245 hours of sunshine. This marks a slight dip from the previous month's average, but still showcases a strong summer glow. The trend for the year reveals a peak in November, where sunshine soars to an impressive 296 hours, and December follows closely with 318 hours, making them the sunniest months. In contrast, June experiences the least sunshine at 220 hours, suggesting that winter's chill has a noticeable impact. Overall, the warm, sunlit days of late winter hinge on a promising upward trajectory towards the longer days of spring and summer, enveloping the region in a delightful embrace of sunshine.
In Sao Francisco do Sul, August brings a 29% chance of sunny weather, marking a notable drop from July’s 57%. This month stands out as part of a seasonal trend where the likelihood of sunshine begins to wane after the robust sunlight of mid-winter. While it is still better than many other months, with February and May holding the highest chances, August's weather is an intriguing transition towards the cloudier months ahead. As the year progresses into spring, it’s a time when residents and visitors alike should be prepared for occasional rain while still hoping for the pleasant sunny spells that linger through the early parts of the season.
In Sao Francisco do Sul, Brazil, the ebb and flow of daylight throughout the year reveals an intriguing pattern. Starting with a generous 13 hours of daylight in January, the days gradually shorten to 10 hours by June, marking the peak of winter. As August arrives, a subtle shift occurs, bringing back the daylight to 11 hours, a trend that continues into September. This resurgence paves the way for longer days ahead, as October and November see daylight extending back to 12 and 13 hours, respectively. The cyclical nature of daylight duration not only highlights the region's seasonal transitions but also sets the stage for vibrant outdoor experiences as spring approaches.
In August, São Francisco do Sul experiences gentle breezes with an average wind speed of 1.7 m/s (approximately 4 mph), matching the calmer pace of the previous months. As we dive deeper into the year, a notable trend emerges: while the early months of the year remain relatively tranquil, the wind begins to pick up in September and continues to strengthen into the latter part of the year, reaching 2.2 m/s (5 mph) by October through December. This gradual increase suggests a refreshing shift in the coastal air, promising invigorating winds for those exploring this picturesque Brazilian town in the latter months.
Weather in Sao Francisco do Sul varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Sao Francisco do Sul, focusing on differences in temperature, rainfall, humidity, and UV levels.
August and January present contrasting weather patterns in Sao Francisco do Sul. In August, temperatures range from a mild 5°C (41°F) to a warm 31°C (88°F), with an average of 18°C (64°F). The month experiences about 70 mm (2.7 in) of precipitation over 10 days, accompanied by a humidity level of 79%. Conversely, January boasts significantly higher temperatures, with a minimum of 18°C (64°F) and a maximum reaching 38°C (101°F), resulting in an average of 26°C (78°F). This month also sees increased precipitation, totaling 264 mm (10.4 in) over 21 days, and a higher humidity of 86%. For more detailed insights into January's climate, you can visit Sao Francisco do Sul weather in January.
In August, temperatures in Sao Francisco do Sul range from a cool 5°C (41°F) at night to a comfortable average of 18°C (64°F) during the day, peaking at 31°C (88°F). The month sees about 70 mm (2.7 in) of rainfall spread over roughly 10 days, with humidity levels around 79%. In contrast, February brings significantly warmer weather, with minimum temperatures at 16°C (60°F) and averages soaring to 25°C (77°F), reaching maximums of 36°C (98°F). However, February is also much wetter, experiencing 204 mm (8.0 in) of rain over 21 days and slightly higher humidity at 83%. For more detailed information on February weather, visit Sao Francisco do Sul weather in February.
When comparing the weather in August and March, notable differences emerge. August features a milder temperature range with a minimum of 5°C (41°F), an average of 18°C (64°F), and a maximum of 31°C (88°F). In contrast, March experiences warmer temperatures, with a minimum of 17°C (63°F), an average of 24°C (76°F), and peaks at 35°C (94°F). Additionally, March is significantly wetter, receiving 199 mm (7.9 in) of precipitation over 25 days, compared to August's 70 mm (2.7 in) over just 10 days. The humidity levels are relatively high in both months, with August at 79% and March slightly higher at 85%. For more details, you can check out Sao Francisco do Sul weather in March.
In August, the weather in Sao Francisco do Sul features a minimum temperature of 5°C (41°F) and a maximum of 31°C (88°F), with an average of 18°C (64°F). The month experiences about 70 mm (2.7 in) of precipitation over approximately 10 rainy days, accompanied by a humidity level of 79%.
In contrast, April showcases significantly warmer conditions, with temperatures ranging from a minimum of 11°C (52°F) to a maximum of 34°C (93°F), averaging around 22°C (72°F). The month is wetter, receiving 108 mm (4.3 in) of rain over approximately 15 days and has a slightly higher humidity level of 85%. For more details on April's weather, visit Sao Francisco do Sul weather in April.
When comparing the weather in August and May, both months experience similar maximum temperatures, reaching up to 31°C (88°F). However, May tends to be slightly cooler overall, with a minimum temperature of 7°C (45°F) compared to August's 5°C (41°F), and an average temperature of 20°C (67°F) versus August's 18°C (64°F).
May also sees significantly higher precipitation, with 112 mm (4.4 in) falling over 15 days, compared to August's 70 mm (2.7 in) occurring over 10 days. This results in a more humid environment in May, with humidity levels at 86%, compared to August's 79%. For a detailed look at May's weather specifics, you can visit Sao Francisco do Sul weather in May.
In comparing the weather of August and June, both months exhibit similar temperature ranges, with averages at around 18°C (64°F) and maximums peaking at 31°C (88°F). However, August tends to be slightly drier, receiving only 70 mm (2.7 in) of precipitation over approximately 10 days, while June sees more rainfall at 108 mm (4.3 in) across 11 days, contributing to a higher humidity level of 85% compared to August's 79%. This higher humidity in June can make it feel warmer, despite the almost identical average temperatures. For a detailed look into June's specific weather patterns, you can visit Sao Francisco do Sul weather in June.
In comparing the weather of August and July, both months exhibit similar maximum temperatures, reaching up to 31°C (88°F). However, August tends to be slightly warmer overall, with average temperatures of 18°C (64°F), compared to July's 17°C (63°F). Precipitation is significantly higher in August, totaling 70 mm (2.7 in) over 10 days, while July experiences only 33 mm (1.3 in) across 7 days. Humidity levels remain consistently high in both months, with August at 79% and July at 80%. For those interested in more detailed July weather patterns, please visit Sao Francisco do Sul weather in July.
August and September exhibit distinct weather patterns as summer transitions to fall. In August, temperatures range from a minimum of 5°C (41°F) to a maximum of 31°C (88°F), with an average of 18°C (64°F). The month sees about 70 mm (2.7 in) of precipitation over approximately 10 days, accompanied by a humidity level of 79%.
In contrast, September experiences slightly warmer nights with a minimum temperature of 9°C (49°F) and an average of 20°C (68°F), while still reaching highs of 31°C (87°F). However, rainfall increases significantly, with 106 mm (4.2 in) expected over 14 days, and humidity rises to 82%. For more details about September’s weather in this region, you can check Sao Francisco do Sul weather in September.
In comparing the weather conditions of August and October, we see notable differences in temperature and precipitation. August features a wider temperature range with a minimum of 5°C (41°F), an average of 18°C (64°F), and a maximum of 31°C (88°F). In contrast, October experiences warmer temperatures, with a minimum of 12°C (54°F), an average of 21°C (70°F), and a peak of 37°C (99°F). Additionally, while August sees about 70 mm (2.7 in) of precipitation over 10 days, October is significantly wetter, with 166 mm (6.5 in) spread across 20 days. Humidity levels remain relatively high in both months, peaking at 79% in August and slightly increasing to 82% in October. For more detailed weather insights, you can visit Sao Francisco do Sul weather in October.
The weather in August and November presents a stark contrast in conditions. August experiences a wider temperature range, with minimums at 5°C (41°F) and maximums reaching 31°C (88°F), averaging around 18°C (64°F). Meanwhile, November showcases milder temperatures, with lows of 13°C (56°F), highs of 35°C (95°F), and an average of 22°C (72°F).
Precipitation also differs significantly between the two months; August receives about 70 mm (2.7 in) over 10 days, while November sees a considerable increase in rainfall to 145 mm (5.7 in) spread across 21 days. Additionally, humidity rises slightly in November to 86%, up from August’s 79%. For more detailed insights on November weather, visit Sao Francisco do Sul weather in November.
In comparing the weather of August and December, significant differences can be observed. August brings milder temperatures, with a minimum of 5°C (41°F) and an average of 18°C (64°F), while December experiences a notably warmer range, with lows of 15°C (59°F) and highs reaching up to 36°C (96°F). August sees 70 mm (2.7 in) of precipitation over about 10 days, while December has much heavier rainfall, totaling 209 mm (8.2 in) across 21 days, and higher humidity at 88% compared to 79% in August. For more detailed information on December weather patterns, you can visit Sao Francisco do Sul weather in December.
As August rolls into Sao Francisco do Sul, the weather begins to shift, offering a delightful blend of summer warmth and the crispness that hints at the upcoming spring. With maximum temperatures reaching enjoyable highs, the days are perfect for outdoor activities, while the cooler nights provide a refreshing contrast. However, August's humidity levels remind residents and visitors of summer’s lingering presence, complemented by a moderate amount of rain spread over several days. This unique climate scenario sets August apart from other months, striking a balance between warmth and comfort. For a deeper understanding of how August fits into the overall weather pattern, check out the Sao Francisco do Sul Climate.