Weather in Puerto Iguazu

Planning a trip or simply interested in the weather in Puerto Iguazu? Here you will find the latest information: current meteorological conditions, detailed forecasts, and clear charts to help you prepare for any whims of nature.

The city of Puerto Iguazu in Argentina is distinguished by a humid subtropical climate, ensuring warm weather for the greater part of the year. There are no harsh winters here, and summers are quite hot and humid. Tourists should expect noticeable seasonal changes, especially in rainfall amounts and temperature figures.

The summer period, which falls during the months from December to March, is the hottest time of the year. Average daytime temperatures often rise above 30°C, and January stands out as the warmest month with an average temperature of 27.1°C. Summer is also characterized by the highest probability of rain: for example, in January there are about 17 rainy days. Humidity is elevated at this time, which is typical for this climate.

Winter in Puerto Iguazu, from June to August, offers milder and drier weather. Average temperatures at this time fluctuate around 18-20°C, and July is the coolest month (averaging 18.1°C). The number of rainy days drops significantly, reaching a minimum of 6 days in July and August. Transitional seasons, spring (September-November) and autumn (April-May), are also comfortable for visiting, though it is worth noting that October may bring some increase in the number of rainy days compared to the driest winter months.

The climate in Puerto Iguazu is characterized by warmth throughout the year, but with noticeable seasonal temperature fluctuations. The hottest month is usually January, when the average air temperature is about 27.1°C, and daytime highs often exceed 31°C. The coolest period is considered to be July: at this time the average temperature holds at the mark of 18.1°C, and average minimum night temperatures can drop to 13.4°C. Thus, the annual range of average temperatures is quite wide, allowing you to choose the optimal time for a trip depending on your weather preferences.

Summer months in Puerto Iguazu, covering the period from December to March, bring hot and, generally, humid weather. Average daytime temperatures at this time are consistently within 30-31°C (for example, in January and December the average maximum reaches 31.3°C), and nights remain very warm, with temperatures rarely dropping below 21-23°C. Daily temperature fluctuations throughout the year are quite noticeable: the difference between day and night figures often amounts to 8-10°C. For instance, in July the daytime maximum is on average 22.8°C, and the night minimum is 13.4°C, which gives a difference of more than 9 degrees. This ensures some refreshment in the evening and night hours even in the warmest months.

Winter in Puerto Iguazu, which falls on June, July, and August, is distinguished by mildness and comfort. During the day, the air temperature usually fluctuates in the range from 22°C to 25°C (for example, in June the average maximum is 22.5°C, and in August 24.8°C), which creates pleasant conditions for active recreation and excursions. Nights become noticeably cooler, with average minimum temperatures around 13-15°C, especially in July (13.4°C). Transitional seasons – spring (September-November) and autumn (April-May) – demonstrate a gradual change in temperature regimes. In spring, the air warms up from an average of 23.2°C in September to 25.3°C in November, and in autumn there is a gradual cooling from 23.4°C in April to 19.7°C in May.

In Puerto Iguazu, precipitation falls throughout the year, however, its intensity and frequency vary from month to month. Based on the provided data, one cannot highlight a clearly expressed rainy season with a very large amount of precipitation, as monthly average volumes remain comparatively low. Nevertheless, periods with more frequent rains are observed and, conversely, drier months.

The greatest amount of precipitation, according to statistics, falls in October, when an average of 7 mm falls, and this month is also characterized by a significant number of rainy days – about 13. January is also one of the wettest months in terms of precipitation frequency: although the average rainfall is 5 mm, it rains approximately 17 days per month. During these periods, the probability of encountering rainy weather is higher.

The driest months in Puerto Iguazu are July and August. In July, the least amount of precipitation falls (on average 2 mm), and in both these months, the lowest number of rainy days is counted – only about 6. This makes the middle of winter (in the Southern Hemisphere) the driest period of the year. In other months, such as February, March, April, May, June, November, and December, the amount of precipitation fluctuates within 4-5 mm, and the number of rainy days varies from 8 to 12, which indicates a moderate probability of precipitation.

When planning a trip to Puerto Iguazu, it is important to consider its warm and humid subtropical climate. Year-round you will need light, breathable clothing – t-shirts, shorts, skirts, and dresses made from natural fabrics. Given the large number of "wet days" even with a small volume of precipitation, especially from October to March, be sure to take a light raincoat or poncho, as well as a compact umbrella. Don't forget comfortable walking shoes, as you will have to walk a lot, especially if you plan to visit the famous waterfalls. Sunscreen, a hat, and sunglasses are also essential items, as the sun here is quite active throughout the year.

Summer months (from December to March) are the hottest and most humid, with average temperatures around 26-27°C and maximums reaching 31°C. During this period, choose the lightest clothing possible. In winter (from June to August), the weather becomes milder, average temperatures drop to 18-19°C, and minimums can reach 13-14°C. For this time of year, the principle of layering will come in handy: take a sweater, a light jacket, or fleece with you to feel comfortable on cool evenings or early in the morning. During the day, however, it will likely be warm enough for light clothing.

Regardless of the season, insect repellent will be very useful, especially near the waterfalls and in the national park. Quick-drying clothing may prove useful, as you can get wet from the spray of waterfalls or sudden rain. Don't forget swimwear if you plan to visit hotel pools or natural swimming spots. An electrical adapter and a portable charger may also be useful on your journey through Argentina.