Puerto Iguazú Weather in May
May in Puerto Iguazú brings high temperatures, with daytime highs of 25°C (77°F) and nights around 15°C (59°F). Quite a bit of rainfall is expected, around 168 mm (6.6 in), so pack an umbrella.
Rainfall in Puerto Iguazú in May
Historically, approximately 8 days this month are expected to have rain, averaging 168 mm (6.6 in). Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in Puerto Iguazú in May
Daytime temperatures in Puerto Iguazú reach 25°C (77°F) in May, dropping to 15°C (59°F) at night. May is part of winter. Conditions stay fairly consistent through the month, making it easier to plan what to wear. Nights drop to around 15°C (59°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.
Sunshine in Puerto Iguazú in May
You can expect a moderate amount of sunlight, with approximately 137 hours. This means a pleasant mix of sun and overcast.If you prefer enjoying temperate temperatures and rain-free days, August typically offers 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 May
Min Temperature
15°C (59°F)
Max Temperature
25°C (77°F)
Chance of Rain
26%
Precipitation
168 mm (6.6 in)
Rainy days
8 days
Humidity
87%
Sunshine
137 hours
Percentage Sunshine
40%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Puerto Iguazú typically drop from around 25°C (77°F) at the start of May to approximately 22°C (72°F) by the end. Nights are cool, with lows typically ranging from 11°C (52°F) to 15°C (59°F).
Average temperatures in May
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 May
Historical weather for Puerto Iguazú in May
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 May
Based on 50 years of weather observations in Puerto Iguazú between 1976 and 2026, these are the recorded extremes.
- The warmest day in May was on May 13, 2002, with a maximum of 34°C (93°F).
- On May 31, 2009, Puerto Iguazú saw its coldest May day with temperatures maxing out at 11°C (52°F).
- The lowest overnight temperature recorded in May was 0°C (32°F) (May 30, 2007).
Best Places in Argentina in May
Find out more about the weather in Argentina and which places have the best travel conditions in this month. See all of Argentina in May →
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What to Wear in Puerto Iguazú in May
For Puerto Iguazú in May, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Also bring a poncho, it will rain a lot! Waterproof everything you can. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Puerto Iguazú in May
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.
