Climate and monthly weather forecastPuerto Iguazú, Argentina

The climate of Puerto Iguazú

Location-specific conditions have led the climatologists to classify the weather in Puerto Iguazú, Argentina as a prevalent Humid subtropical climate (Cfa) with no dry season. These climatic parameters form the backdrop for the expected weather conditions throughout the year. Yearly average highest temperatures fall between 22.1°C (71.8°F) and 31.2°C (88.2°F) while the expected lowest temperatures range from 11°C (51.8°F) to 20.9°C (69.6°F) over the year.

The annual relative humidity figures vary moderately, reaching their zenith of 84% in the months of May and June, while declining slightly to 73% in the month of December. Correspondingly, the number of hours of daylight fluctuates between 10.6 hours and 13.7 hours, with June having the fewest daylight hours and December boasting the most.

Rainfall patterns show a diversity of ranges over the year. The water precipitates in amounts from 81mm (3.19") during the driest month of August, while extending to as high as 261mm (10.28") in the rainiest month of October. Notably, the sunniest month is December with 6.7 sunlight hours per day, whereas June receives the least amount of sunlight at just 3.8 hours per day.

The best time to visit Puerto Iguazú

Considering temperature, rainfall, and sunshine data, it emerges that the most favourable time to visit Puerto Iguazú is between April and September. During these months, temperatures are moderate, ranging from highs of 26.5°C (79.7°F) to 22.4°C (72.3°F), and lows of 16.7°C (62.1°F) to 11°C (51.8°F). Relative humidity is slightly higher during this time, with averages from 81% to 80%. Simultaneously, rainfall levels are on the lower end, with the least precipitation in August, only 81mm (3.19") during the entire month. This blend of moderate temperature, low rainfall, and elevated humidity create an ideal setting for tourist exploration.

The worst time to visit Puerto Iguazú

The least favoured period for a visit is quite evidently the rainiest month of the year, October. Weather stats show a striking figure of 261mm (10.28") of precipitation in October alone, along with 11 rainfall days, making touring and outdoor adventures less enjoyable. Apart from this, the heat surges to an average high of 28.1°C (82.6°F) in the same month, also making it less comfortable. Additionally, there's also slightly less sunshine in October, with an average of 5.4 hours of sun per day.

Spring weather in Puerto Iguazú

Spring, stretching from September to November, comes with a gradual temperature hike. Daily high temperatures ascend from 25°C (77°F) in September to 29.9°C (85.8°F) in November, while minimum temperatures increase from 13.5°C (56.3°F) to 17.9°C (64.2°F). Rainfall accumulations rise significantly during this time from 164mm (6.46") in September to 171mm (6.73") in November. November proves to be the month with maximum rainfall days, totalling up to 8 days.

Summer weather in Puerto Iguazú

The summer season from December through February in Puerto Iguazú often sees high temperatures reaching the peak of the annual scale. The hottest month, January, exhibits temperatures soaring up to 31.2°C (88.2°F), while lows are in the comfortable span of 20.9°C (69.6°F). An abundant 212mm (8.35") of rainfall pours in December, decreasing to 141mm (5.55") in February.

Autumn weather in Puerto Iguazú

Autumn transitions in from March to May, offering descending temperatures and increasing rainfall. The temperatures settle down from March’s high of 30.6°C (87.1°F) to May’s moderate 23.7°C (74.7°F). Correspondingly, the lows slide from 19.5°C (67.1°F) in March to a quite cool 12.4°C (54.3°F) in May. An uptick is noticed in the rainfall trend, with 126mm (4.96") in March extending to 173mm (6.81") in May.

Winter weather in Puerto Iguazú

Winter in Puerto Iguazú, lasting from June to August, provides quite amicable weather with typically mild temperatures. The June-July period regularly reaches highs of 22.4°C (72.3°F), later escalates to 25°C (77°F) in August. On the other hand, the lowest temperature dips to 11°C (51.8°F) in July. Rainfall maintains a relatively lower profile, with August receiving the least yearly precipitation of 81mm (3.19").

Weather in January

Kicking off the year, Puerto Iguazú, Argentina welcomes January with warm temperatures and abundant humidity. Typically, daytime highs peak up to 31.2°C (88.2°F) while the nights cool to around 20.9°C (69.6°F). Residents and tourists alike can anticipate spending their days nestled amidst the balmy air, with relative humidity levels resting at around 75%. Weather in January »

Weather in February

As February rolls in, the weather in Puerto Iguazú takes a slight dip, while remaining relatively warm. There is little change from the previous month, with temperatures hovering near 30.9°C (87.6°F) at the height of day and dropping to around 20.6°C (69.1°F) at night. Weather in February »

Weather in March

Moving into March, slight variations in weather patterns can be noted. Daytime temperatures, on average, reach 30.6°C (87.1°F), marginally softer than the previous month, while nights cool to 19.5°C (67.1°F). Relative humidity mirrors the previous month, remaining steady at 78%. Weather in March »

Weather in April

April makes a noticeable transition from the more sweltering months of the year, with a significant drop in high temperatures to an average of 26.5°C (79.7°F). Meanwhile, nighttime temperatures reach a comfortable 16.7°C (62.1°F). Weather in April »

Weather in May

May brings in noticeable changes in the weather scenarios of Puerto Iguazú, moving towards somewhat cooler and drier conditions. Daytime temperatures dip further to an average of 23.7°C (74.7°F) while the minimum temperature drops to 12.4°C (54.3°F), marking the advent of cooler nights. Weather in May »

Weather in June

June sees the onset of winter in Puerto Iguazú, with somewhat cooler yet pleasant weather conditions. As the coolest month, June's average high temperature reaches a comfortable 22.1°C (71.8°F), while nighttime temperatures plunge to an average low of 11.4°C (52.5°F). Weather in June »

Weather in July

In July, the weather conditions in Puerto Iguazú remain similar to June, offering pleasant and inviting weather scenarios. Daytime temperatures reach an average high of 22.4°C (72.3°F) while nights cool down to an average of 11°C (51.8°F). Weather in July »

Weather in August

August sees a slight elevation in temperatures, with daytime highs averaging at 25°C (77°F) and night time lows at 12.3°C (54.1°F). A steady decrease in rainfall continues with August recording the lowest rainfall of the year at 81mm (3.19"). Weather in August »

Weather in September

Turning the corner to the spring season, September marks a welcome change with higher temperatures of up to 25.9°C (78.6°F) during the day and lowering to about 13.5°C (56.3°F) at night. A resurgence in rainfall occurs in September with an uptick to 164mm (6.46"), indicative of a mild return to the wetter months of the year. Weather in September »

Weather in October

October introduces significantly warmer daytime temperatures averaging at 28.1°C (82.6°F), accompanied by cool nights with temperatures of around 16.9°C (62.4°F). With 261mm (10.28") of monthly rainfall, October turns out to be the wettest month of the year in Puerto Iguazú while the humidity level remains constant at 75%. Weather in October »

Weather in November

November sustains the high temperature trend with daytime temperatures peaking at around 29.9°C (85.8°F) and a mild coolness settling in at night with lows of approximately 17.9°C (64.2°F). The city experiences a slight dip in rainfall from the previous month, with the total recorded at 171mm (6.73"). Weather in November »

Weather in December

Welcoming the height of summer, December experiences the highest daytime temperatures of the year, hitting averages of 31°C (87.8°F). Accompanied by the warmth of the day, the temperatures at night remain moderate, cooling to about 19.8°C (67.6°F). Weather in December »