Puerto Iguazú Weather in September
September in Puerto Iguazú sees daytime temperatures around 28°C (82°F) and lows of 16°C (61°F) at night. With around 164 mm (6.5 in) of rainfall expected, it's worth packing a rain jacket.
Rainfall in Puerto Iguazú in September
Typically, about 9 days will experience rainfall, with an average of 164 mm (6.5 in) for the month. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.
Temperature in Puerto Iguazú in September
Puerto Iguazú in September gets highs of 28°C (82°F) during the day and drops to 16°C (61°F) at night. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. At 16°C (61°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.
Sunshine in Puerto Iguazú in September
The area enjoys a moderate level of sunlight, with around 106 hours. It's a good balance between sunny and cloudy days.For Puerto Iguazú itself, August generally stands out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Argentina, check out our Puerto Iguazú's climate page.
Puerto Iguazú Temperature in September
Min Temperature
16°C (61°F)
Max Temperature
28°C (82°F)
Chance of Rain
30%
Precipitation
164 mm (6.5 in)
Rainy days
9 days
Humidity
77%
Sunshine
106 hours
Percentage Sunshine
29%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Puerto Iguazú typically stay consistent throughout September, with daily highs averaging around 28°C (82°F). Nights are pleasant, with lows typically ranging from 13°C (55°F) to 16°C (61°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Puerto Iguazú in September
Browse day-by-day weather records for Puerto Iguazú spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Puerto Iguazú historical weather extremes in September
Our historical data for Puerto Iguazú spans 1976 to 2025, revealing these weather extremes.
- Puerto Iguazú recorded its highest September temperature of 40°C (104°F) on September 30, 2020.
- Puerto Iguazú registered its coldest September night on September 5, 2006, with temperatures dropping to 0°C (32°F).
Best Places in Argentina in September
Find out more about the weather in Argentina and which places have the best travel conditions in this month. See all of Argentina in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Puerto Iguazú in September
Warm but pleasant conditions in Puerto Iguazú in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Puerto Iguazú in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Argentina, check out our Puerto Iguazú's climate page.
Temperature Rainfall Sunshine Humidity
See the full Puerto Iguazú climate overview or explore weather in Argentina.
