Last updated: August 21, 2025
In August, Foz do Iguaçu experiences a dynamic climate, with temperatures reaching a maximum of 34°C (94°F) and an average of 19°C (66°F), while noticing a cooler low of 3°C (38°F). The region welcomes about 76 mm (3.0 in) of precipitation over approximately 6 days, contributing to its lush landscapes. Humidity levels hover around 49%, adding a touch of warmth to the refreshing air. Visitors can anticipate mild yet occasionally wet days, perfect for exploring the breathtaking natural wonders this vibrant Brazilian locale has to offer.
In August, Foz do Iguacu experiences a refreshing transition as winter draws to a close. The temperatures often range from a brisk 3°C (38°F) at night to a pleasant 34°C (94°F) during the day, averaging around 19°C (66°F). This month marks a noticeable uptick from the chill of July, where lows dipped to just 1°C (34°F). As spring approaches, the warmth begins to return, hinting at the vibrant, lush landscapes to come. Travelers can enjoy comfortable days that invite outdoor exploration while delighting in the breathtaking beauty of the region’s famed waterfalls. Overall, August strikes a perfect balance for visitors seeking both adventure and the allure of moderate weather.
In August, Foz do Iguaçu experiences a moderate shift in precipitation, with 76 mm (approximately 3.0 in) of rainfall spread over six days. This marks a noticeable increase compared to the significantly drier month of July, which saw just 43 mm (1.7 in) over the same number of days. While August's rainfall remains lower than the heavier downpours typical of the months surrounding it, such as October's considerable 171 mm (6.7 in), the slight uptick signals the gradual transition towards the wetter season. The patterns highlight a tendency for precipitation to intensify as the year progresses, with the lush landscape of Foz do Iguaçu benefitting from this seasonal rhythm.
August in Foz do Iguaçu brings a noticeable shift in humidity, with levels typically around 49%, marking one of the year's lowest points. This decline from the preceding months highlights a trend towards drier conditions, especially following the peak humidity of 82% in January and a gradual reduction through to July’s 61%. As summer transitions to winter, the air becomes less dense and more comfortable, offering a refreshing contrast to the muggy months earlier in the year. However, as the year progresses, humidity gradually picks up again, signaling the return of moisture-rich conditions by September. This seasonal ebb and flow not only influences the climate but also enhances the region's natural beauty, making it an inviting destination throughout the year.
In August, Foz do Iguacu experiences a UV Index of 8, categorized as very high with a burn time of just 15 minutes. This marks a noticeable increase from the moderate levels observed in June and the high levels in July. As the winter months transition into spring, the sun's intensity begins to ramp up again, nudging locals and visitors alike to take sun safety seriously. With the UV Index climbing back towards more extreme levels seen earlier in the year, it’s crucial to stay protected during outdoor activities in this stunning Brazilian destination. For detailed insights on UV intensity throughout the year, check out Foz do Iguacu UV Index.
UV Risk Categories
August in Foz do Iguaçu shines with an average of 279 hours of sunlight, continuing the region's trend of vibrant summer days. The sunshine begins to taper off slightly from July's 277 hours, yet it still provides a delightful backdrop for exploring the breathtaking waterfalls and rich flora. As the months progress towards spring, one can observe an upward swing in sunshine, culminating in November and December, where the hours skyrocket to 319 and 351, respectively. This pattern highlights the delightful warmth of Brazilian summers, making Foz do Iguaçu an inviting destination for sun seekers throughout the year.
In Foz do Iguaçu, Brazil, August enjoys a 62% chance of sunny weather, making it a delightful month for outdoor activities. This figure aligns closely with the sunnier months of February, July, and April, which range between 62% and 67%. Following a mid-year dip in June, the likelihood of sunshine starts to pick up again, suggesting that late winter in this region offers pleasant days, perfect for exploring the breathtaking waterfalls. As the year progresses towards the warmer months, the chance of sun increases, peaking in December at a bright 75%, but August remains a solid choice for those seeking enjoyable weather before the summer heat fully sets in.
In August, Foz do Iguaçu experiences 11 hours of daylight, marking a slight increase from the 10 hours seen in the preceding months of June and July. This uptick signals the transition toward brighter days, as the city prepares for the longer daylight hours of spring. The trend is consistent, with daylight duration gradually climbing through the late winter months, peaking again in December and January at a generous 13 hours. As the seasons change, visitors can expect a refreshing blend of warm weather and extended daylight, ideal for exploring the natural wonders of this breathtaking destination.
In August, Foz do Iguaçu experiences a refreshing uptick in wind speed, averaging 2.8 m/s (6 mph). This is part of a broader trend where wind speeds gradually increase during the winter months, reaching their annual peak in late winter before settling back down in the spring. Following August, September takes the lead with an average of 2.9 m/s (6 mph), making it the windiest month in the region. Interestingly, the winds remain relatively gentle throughout the year, hovering around 2.6 m/s (6 mph) during the summer and fall months, which adds a delightful breeze to the stunning natural landscapes. This consistent yet mild wind pattern enhances the charm of Foz do Iguaçu, inviting visitors to explore its breathtaking waterfalls and lush surroundings.
Weather in Foz do Iguacu varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Foz do Iguacu, focusing on differences in temperature, rainfall, humidity, and UV levels.
The weather in August and January presents a stark contrast in Foz do Iguaçu. August features cooler temperatures with a minimum of 3°C (38°F) and an average of 19°C (66°F), peaking at a maximum of 34°C (94°F). In this month, the region experiences relatively low humidity at 49% and only 76 mm (3.0 in) of precipitation over about 6 days. In comparison, January brings much warmer conditions, with temperatures ranging from a minimum of 16°C (62°F) to a scorching maximum of 39°C (102°F), and an average of 27°C (80°F). However, this month also sees higher humidity at 82% and significantly more rainfall, totaling 154 mm (6.1 in) over 16 days. For more details, visit Foz do Iguacu weather in January.
When comparing the weather in August and February, notable differences emerge. August tends to be cooler with average temperatures around 19°C (66°F) and a maximum of 34°C (94°F), while February experiences warmer conditions, featuring an average temperature of 26°C (79°F) and reaching up to 37°C (98°F). Additionally, February sees more precipitation, accumulating 111 mm (4.4 in) over 11 days compared to August’s 76 mm (3.0 in) over just 6 days. Humidity levels also reflect these trends, with August at 49% and February significantly higher at 79%. For a closer look at how February's climate influences activities, check out Foz do Iguacu weather in February.
In comparing the weather of August and March, we see notable differences in temperature and humidity levels. August experiences cooler temperatures, with an average of 19°C (66°F) and a maximum of 34°C (94°F), whereas March boasts a warmer average of 25°C (78°F) and can reach highs of 36°C (97°F). Precipitation is also more pronounced in March, with a total of 121 mm (4.8 in) over 11 days, compared to August's 76 mm (3.0 in) over just 6 days. Additionally, March has a higher humidity level at 75%, which contrasts with August's 49%. For more details on weather conditions during this month, you can visit Foz do Iguacu weather in March.
When comparing the weather in August and April, notable differences emerge. August typically features a wider temperature range, with minimum temperatures around 3°C (38°F) and a maximum reaching as high as 34°C (94°F), averaging 19°C (66°F). In contrast, April presents a milder climate with minimum temperatures of 8°C (47°F) and highs peaking at 35°C (95°F), averaging 22°C (73°F). Additionally, April experiences higher precipitation levels, with 105 mm (4.1 in) of rain over 6 days, compared to August's 76 mm (3.0 in) over the same number of days. The humidity in April is also significantly higher at 74%, versus August's 49%. For more details, you can refer to Foz do Iguacu weather in April.
When comparing the weather in August and May, we observe notable differences in both temperature and precipitation. August boasts a wider temperature range with a minimum of 3°C (38°F), an average of 19°C (66°F), and a maximum reaching 34°C (94°F). In contrast, May's temperatures remain slightly higher at a minimum of 6°C (44°F), averaging also 19°C (67°F), and peaking at 33°C (91°F). Precipitation levels are significantly higher in May, totaling 149 mm (5.9 in) over 10 days, compared to August's 76 mm (3.0 in) across just 6 days. Additionally, May features increased humidity at 75%, whereas August experiences a lower humidity level of 49%. For more detailed insights on May's conditions, you can check Foz do Iguacu weather in May.
In comparing the weather between August and June, August generally experiences warmer temperatures, with averages around 19°C (66°F) and maximums reaching as high as 34°C (94°F). In contrast, June tends to be cooler, with an average temperature of 18°C (64°F) and maximums of 30°C (87°F). Additionally, August sees less precipitation, recording about 76 mm (3.0 in) over 6 days, while June has a significantly higher rainfall of 146 mm (5.7 in) over 9 days, leading to increased humidity levels of 70% compared to August's 49%. For a detailed look at June weather, you can refer to this link: Foz do Iguacu weather in June.
In comparing the weather of August and July, August tends to be warmer overall, with average temperatures rising to 19°C (66°F) compared to July's 17°C (63°F). The maximum temperatures also reflect this trend, hitting 34°C (94°F) in August, while July peaks at a cooler 30°C (87°F). However, August experiences more precipitation, with 76 mm (3.0 in) of rain over 6 days, compared to July's 43 mm (1.7 in) over the same number of days. Additionally, humidity levels in August are slightly lower at 49%, while July has higher humidity at 61%. For those interested in more detailed weather patterns, you can check out Foz do Iguacu weather in July.
August generally experiences cooler temperatures with a minimum of 3°C (38°F) and an average of 19°C (66°F), while September sees a rise in temperatures, with a minimum of 9°C (49°F) and an average of 23°C (74°F). Interestingly, September also has a slightly higher maximum temperature, reaching up to 39°C (102°F), compared to August's 34°C (94°F). Both months receive similar amounts of precipitation, with 76 mm (3.0 in) in August and 78 mm (3.1 in) in September, and both experience rain on about 6 days. Humidity also increases from 49% in August to 52% in September, leading to a noticeably warmer and more humid atmosphere as summer approaches. For more detailed information, you can check Foz do Iguacu weather in September.
In August, temperatures typically range from a minimum of 3°C (38°F) to a maximum of 34°C (94°F), with an average of 19°C (66°F) and a moderate level of humidity at 49%. The month sees about 76 mm (3.0 in) of precipitation spread over six days. In contrast, October experiences more warmth, with temperatures starting at a minimum of 12°C (53°F) and soaring to a maximum of 40°C (103°F), averaging around 24°C (75°F). However, October is also wetter, receiving 171 mm (6.7 in) of rain over 12 days and higher humidity at 55%. For those interested in specific weather patterns for this month, Foz do Iguacu weather in October provides detailed insights.
In August, the weather presents a cooler profile with temperatures ranging from a minimum of 3°C (38°F) to a maximum of 34°C (94°F), with an average temperature of 19°C (66°F). The month experiences relatively low precipitation, totaling 76 mm (3.0 in) over about 6 days, and humidity levels are moderate at 49%. In contrast, November brings warmer conditions, featuring a minimum temperature of 14°C (58°F) and peaking at 37°C (98°F), with an average of 25°C (77°F). This month sees increased rainfall, with 118 mm (4.7 in) across approximately 9 days, and higher humidity at 73%. For more detailed insights, check out Foz do Iguacu weather in November.
When comparing the weather in August and December, a stark contrast can be observed. August typically features cooler temperatures, with a minimum of 3°C (38°F) and an average of 19°C (66°F), while December offers a much warmer experience with temperatures ranging from a minimum of 14°C (58°F) to an average of 26°C (79°F), peaking at a scorching 38°C (100°F). Additionally, August sees 76 mm (3.0 in) of precipitation over about 6 days, whereas December receives significantly more rain, totaling 155 mm (6.1 in) across 11 days, leading to higher humidity levels of 85%. For more detailed weather information, you can check out Foz do Iguacu weather in December.
August in Foz do Iguaçu presents a distinct contrast to the more humid and rain-soaked months of the year, offering a pleasant blend of cool and warm temperatures. With maximums reaching a comfortable 34°C (94°F) and minimums dipping to 3°C (38°F), the climate is ideal for outdoor adventures without the sweltering heat. Unlike the wetter seasons, August sees only about 76 mm (3.0 in) of precipitation across just 6 days, making it one of the drier months and perfect for exploring the breathtaking waterfalls and lush landscapes. The 49% humidity adds to the overall comfort, allowing visitors to truly enjoy the natural beauty of the region. For a more detailed look at the weather throughout the year, check out Foz do Iguacu Climate.