Last updated: August 21, 2025
January in Foz do Iguaçu, Brazil offers a warm and humid experience, with temperatures soaring to a maximum of 39°C (102°F) and averaging around 27°C (80°F). The days are interspersed with 16 days of rainfall, totaling 154 mm (6.1 in), contributing to a high humidity level of 82%. Visitors can expect a vibrant atmosphere, ideal for exploring the stunning natural wonders, but should be prepared for occasional showers as they immerse themselves in the breathtaking landscapes that Foz do Iguaçu has to offer.
In Foz do Iguaçu, January greets visitors with warm and sultry weather, showcasing average temperatures around 27°C (80°F) that can peak at a scorching 39°C (102°F). Nighttime offers a reprieve with minimums of 16°C (62°F), making it a comfortable time for evening outings. This weather pattern sets the tone for the summer months, as February continues the trend with just slightly lower temperatures, while March begins to usher in a gradual cooling. Notably, as autumn approaches in April, the temperatures drop significantly, revealing a remarkable transition from the intense summer heat to more mild conditions. Overall, January stands out as a quintessential summer month in Foz do Iguaçu, providing a vibrant backdrop for exploring its natural wonders.
In Foz do Iguacu, January ushers in the wet season with an average precipitation of 154 mm (6.1 in), falling over 16 days. This month showcases a vibrant contrast to the drier periods that follow, with February and March experiencing notable decreases to 111 mm (4.4 in) and 121 mm (4.8 in), respectively. As the months progress, April and June maintain similar rainfall levels around 105 mm (4.1 in) and 146 mm (5.7 in), but the dry spell in July sharply reduces precipitation to just 43 mm (1.7 in) over 6 days. Interestingly, the trend begins to shift again in October, where rainfall spikes to 171 mm (6.7 in), reminding us of the region's dynamic weather patterns. The data clearly illustrates the cyclical nature of precipitation in Foz do Iguacu, characterized by distinct wet months followed by brief drying phases, creating a unique climate that supports its lush biodiversity.
In January, Foz do Iguaçu experiences its peak humidity at a significant 82%, setting the stage for a hot, tropical atmosphere. As the month progresses into February, humidity dips slightly to 79%, indicating a gradual shift towards more comfortable conditions. The trend continues into March where levels fall further to 75%. This decreasing pattern persists through the following months, reaching a low of 49% in August, creating a refreshing contrast to the earlier months. However, as the year draws to a close, humidity levels rebound dramatically, soaring to 85% in December. This cyclical rhythm of humidity highlights not only the tropical climate of Foz do Iguaçu but also emphasizes the subtle transitions of the seasons throughout the year.
In January, Foz do Iguaçu experiences an extreme UV Index of 15, with a burn time of just 10 minutes. This intense exposure is a trend that continues into February, maintaining the same UV Index and burn time. As the months progress, the UV Index gradually decreases; by April, it drops to 10 (very high), allowing for a slightly longer burn time of 15 minutes. May sees a further decline to 7 (high), with a burn time extending to 25 minutes. The intensity stabilizes around 5 to 8 during the mid-year months, before rebounding in the latter part of the year with extreme levels once again in October (13), November (15), and December (14), each with a burn time of 10 minutes. This consistent trend of high UV exposure emphasizes the importance of sun protection when visiting. For more detailed information, visit Foz do Iguacu UV Index.
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In Foz do Iguaçu, January welcomes visitors with an impressive 252 hours of sunshine, setting a vibrant tone for the year. This sunshine gradually increases through the following months, peaking at a dazzling 351 hours in December. Notably, November stands out with 319 hours, creating a picturesque lead-up to the year-end festivities. The sunshine remains abundant in early months, with both February and March basking in 310 hours each. As the year progresses into the cooler months, the sunshine subtly declines, particularly in June, which sees the least at 233 hours. However, the warmth of the sun returns in July and August, ensuring that Foz do Iguaçu remains a captivating destination throughout the year.
In Foz do Iguaçu, January presents a somewhat modest 28% chance of sunny weather, setting a tone that suggests the rainy season is still in full swing during this time. This is a notable contrast to the 75% likelihood of sunshine seen in December. As the year progresses into February, the sun’s presence significantly increases to 67%, marking a shift toward brighter days. The trend continues with a solid 54% in March, showcasing a slow but steady transition into sunnier months. Following this pattern, April and May further boost the optimism for sunshine, both hovering around 62-63%. This trend indicates that while January may not be the most reliable for sun seekers, the following months bring greater opportunities for enjoying Foz do Iguaçu's stunning landscapes under clear skies.
In January, Foz do Iguaçu basks in 13 hours of daylight, making it one of the sunniest months of the year. This vibrant period gradually transitions into February and March, where daylight remains robust at 12 hours, inviting plenty of outdoor adventures. As April arrives, daylight dips slightly to 11 hours, signaling the gradual shift toward shorter days. By May and through July, the region experiences a consistent 10 hours of daylight, providing a more subdued atmosphere ideal for cozy explorations. However, as August rolls in, daylight begins to lengthen again, reaching 11 hours, paving the way for the return of brighter days. The cycle concludes as November and December reclaim 13 hours of daylight, ensuring that Foz do Iguaçu enjoys a lovely balance between lengthy, sun-kissed days and gentle twilight evenings throughout the year.
In January, Foz do Iguaçu experiences a gentle breeze, with an average wind speed of 2.6 m/s (6 mph), setting the stage for warm summer days. This moderate wind carries a refreshing air that contrasts beautifully with the region’s humidity. Following January, wind speeds dip slightly in February to 2.2 m/s, yet they remain relatively steady throughout the following months, oscillating between 2.3 and 2.9 m/s till September. As the year progresses, a subtle uptick in wind speeds is observed, peaking at 2.9 m/s in September before tapering back down to similar January levels by December. Overall, the winds create a harmonious balance throughout the year, enhancing Foz do Iguaçu's vibrant natural beauty while providing a pleasant atmosphere for visitors and locals alike.
Weather in Foz do Iguacu varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Foz do Iguacu, focusing on differences in temperature, rainfall, humidity, and UV levels.
In January, the weather in Foz do Iguaçu is characterized by warmer temperatures, with a minimum of 16°C (62°F) and maximum peaking at 39°C (102°F), resulting in an average temperature of 27°C (80°F). The month also experiences significant rainfall, totaling 154 mm (6.1 in) over 16 days, accompanied by high humidity at 82%. In contrast, February sees slightly cooler conditions, with minimum temperatures of 15°C (59°F) and a maximum of 37°C (98°F), averaging around 26°C (79°F). Precipitation decreases to 111 mm (4.4 in) occurring over 11 days, and humidity levels also drop to 79%. For more detailed insights, check out Foz do Iguacu weather in February.
In comparing the weather between January and March, January tends to be hotter and more humid. January's minimum temperature is 16°C (62°F) with an average of 27°C (80°F) and a maximum of 39°C (102°F). In contrast, March experiences slightly cooler temperatures, with a minimum of 13°C (55°F), an average of 25°C (78°F), and a maximum of 36°C (97°F). Precipitation levels are also higher in January, with 154 mm (6.1 in) over 16 days compared to March, which has 121 mm (4.8 in) over 11 days. Additionally, January's humidity is notably higher at 82%, while March sees a decrease to 75%, making it feel a bit more comfortable. For a detailed look at the weather in March, you can visit Foz do Iguacu weather in March.
In January, the weather is significantly warmer, with high temperatures reaching up to 39°C (102°F) and an average temperature of 27°C (80°F). The month experiences substantial precipitation, with 154 mm (6.1 in) of rainfall spread over 16 days, contributing to a high humidity level of 82%. In contrast, April brings milder conditions, featuring an average temperature of 22°C (73°F), with maximums peaking at 35°C (95°F). Precipitation decreases to 105 mm (4.1 in) over just 6 days, and humidity drops to 74%. For more detailed information, you can refer to Foz do Iguacu weather in April.
In January, the weather is characterized by high temperatures, with minimums around 16°C (62°F) and maximums soaring to 39°C (102°F), resulting in a warm average of 27°C (80°F). The month also experiences significant rainfall, totaling 154 mm (6.1 in) over 16 days, accompanied by high humidity levels at 82%. In contrast, May sees much cooler temperatures, with a minimum of 6°C (44°F) and a maximum of 33°C (91°F), creating a more moderate average of 19°C (67°F). Rainfall decreases slightly to 149 mm (5.9 in) but occurs over just 10 days, and humidity lowers to 75%. For more details on the climate in May, check out Foz do Iguacu weather in May.
In January, Foz do Iguacu experiences warm tropical temperatures with a minimum of 16°C (62°F) and soaring daytime highs averaging around 39°C (102°F). The humidity is quite high at 82%, resulting in a sultry atmosphere, and rainfall is frequent, with precipitation occurring on 16 days totaling 154 mm (6.1 in).
Conversely, June brings a much cooler climate, where temperatures range from a chilly 2°C (36°F) at night to a pleasant average of 18°C (64°F) during the day, peaking at a maximum of 30°C (87°F). The humidity drops to 70%, making it more comfortable, and the precipitation is slightly lower than in January, with rain reported on only 9 days and totaling 146 mm (5.7 in). For more specific details about June weather in this region, you can visit Foz do Iguacu weather in June.
When comparing the weather in January and July, it's clear that the two months present strikingly different climates. January boasts high temperatures, with a minimum of 16°C (62°F), an average of 27°C (80°F), and maximums reaching up to 39°C (102°F), coupled with high humidity at 82% and significant precipitation of 154 mm over 16 days. In contrast, July features much cooler temperatures, with a minimum of 1°C (34°F), an average of 17°C (63°F), and a maximum of 30°C (87°F). July is also drier, receiving only 43 mm of rain over 6 days and with a lower humidity level of 61%. For a more detailed insight into July's climate, you can check out Foz do Iguacu weather in July.
In January, the weather is significantly warmer and more humid, 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). This month also experiences considerable rainfall, totaling 154 mm (6.1 in) over 16 days, making it a wet season with a high humidity level of 82%. In contrast, August is much cooler, with temperatures varying from a minimum of 3°C (38°F) to a maximum of 34°C (94°F) and an average of 19°C (66°F). Rainfall is lighter, amounting to 76 mm (3.0 in) over just 6 days, and the humidity drops to a more comfortable 49%. For more specific information about conditions in August, you can check Foz do Iguacu weather in August.
In January, the weather is significantly warmer and more humid, 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). This month also sees considerable rainfall, with 154 mm (6.1 in) of precipitation over about 16 days, resulting in a humidity level of 82%.
In contrast, September offers a much cooler experience, with temperatures dropping to a minimum of 9°C (49°F) and averaging 23°C (74°F), while still reaching a high of 39°C (102°F) on occasion. The precipitation significantly decreases to 78 mm (3.1 in) over just 6 days, and the humidity is also lower at 52%. For more information on the weather during this month, you can refer to Foz do Iguacu weather in September.
In January, the weather is notably warmer, with average temperatures ranging from a minimum of 16°C (62°F) to a maximum of 39°C (102°F), accompanied by high humidity levels of 82%. Rainfall is frequent during this month, with 154 mm (6.1 in) of precipitation spread over 16 days. In contrast, October sees cooler temperatures, with a minimum of 12°C (53°F) and an average of 24°C (75°F), while still reaching a maximum of 40°C (103°F). Although October experiences slightly more rainfall at 171 mm (6.7 in) over just 12 days, the humidity is significantly lower at 55%. For more detailed information, check out Foz do Iguacu weather in October.
In comparing the weather between January and November, January tends to be hotter and more humid. The minimum temperature in January is 16°C (62°F), while November has a slightly cooler minimum at 14°C (58°F). The average temperatures also reflect this trend, with January averaging 27°C (80°F) compared to November's 25°C (77°F). Additionally, January sees higher maximum temperatures, reaching up to 39°C (102°F) versus 37°C (98°F) in November. Precipitation is more frequent in January, with 154 mm (6.1 in) over 16 days, compared to 118 mm (4.7 in) over just 9 days in November. Furthermore, the humidity in January is significantly higher at 82% compared to 73% in November. For more detailed insights, you can check Foz do Iguacu weather in November.
In comparing the weather between January and December, both months showcase warm temperatures, but January tends to be slightly hotter, with maximum daily temperatures reaching up to 39°C (102°F) compared to December's 38°C (100°F). The minimum daily temperatures are also a touch higher in January at 16°C (62°F), while December starts off at 14°C (58°F). Precipitation levels are quite similar, with January experiencing 154 mm (6.1 in) over 16 days, just slightly more than December's 155 mm (6.1 in) spread across 11 days. Humidity is more pronounced in December at 85%, compared to January's 82%. Overall, January can be considered a bit warmer and wetter than December. For more specifics on December’s conditions, you can refer to Foz do Iguacu weather in December.
January in Foz do Iguaçu presents a vibrant contrast to the cooler, drier months that precede it. With temperatures often soaring to a sweltering 39°C (102°F) and an average of 27°C (80°F), this month embodies the essence of summer in Brazil. However, the heat is accompanied by significant humidity levels reaching 82%, making the air feel even warmer and more tropical. You can expect frequent rain, with about 16 days of precipitation totaling 154 mm (6.1 in), transforming the landscape into a lush paradise. While other months may offer a milder climate, January's unique combination of heat and humidity creates a dynamic atmosphere perfect for experiencing the natural wonders of the region. For a deeper dive into what to expect throughout the year, check out Foz do Iguacu Climate.