Foz do Iguaçu Weather in May
Foz do Iguaçu in May averages 25°C (77°F) during the day and 15°C (59°F) at night. This is part of the winter season, and quite a bit of rainfall is expected this month.
Rainfall in Foz do Iguaçu in May
Past climate data indicates that roughly 8 days will see rain, totalling around 166 mm (6.5 in) for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in Foz do Iguaçu in May
In May, expect high temperatures in Foz do Iguaçu, with highs of 25°C (77°F) and lows of 15°C (59°F) at night. The month of May belongs to the winter season. This kind of day-to-night contrast is typical for this time of year. With lows of 15°C (59°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.
Sunshine in Foz do Iguaçu in May
With about 182 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.Should you favor a climate that's both dry and comfortably warm, August typically offers the most agreeable 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 Brazil, check out our Foz do Iguaçu's climate page.
Foz do Iguaçu Temperature in May
Min Temperature
15°C (59°F)
Max Temperature
25°C (77°F)
Chance of Rain
25%
Precipitation
166 mm (6.5 in)
Rainy days
8 days
Humidity
86%
Sunshine
182 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Foz do Iguaçu 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 Foz do Iguaçu in May
Browse day-by-day weather records for Foz do Iguaçu spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Foz do Iguaçu historical weather extremes in May
Based on 50 years of weather observations in Foz do Iguaçu 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).
- The lowest daytime temperature in May was 11°C (52°F), recorded on May 31, 2009.
- Foz do Iguaçu registered its coldest May night on May 31, 1979, with temperatures dropping to 0°C (32°F).
Best Places in Brazil in May
Find out more about the weather in Brazil and which places have the best travel conditions in this month. See all of Brazil in May →
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What to Wear in Foz do Iguaçu in May
For Foz do Iguaçu 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. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Foz do Iguaçu 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 Brazil, check out our Foz do Iguaçu's climate page.
Temperature Rainfall Sunshine Humidity
See the full Foz do Iguaçu climate overview or explore weather in Brazil.
