Parnaíba Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Parnaíba.
Climate overview of Parnaíba
Parnaíba, Piauí, Brazil, enjoys a steady climate throughout the year, with daytime temperatures typically around 33°C (91°F). September is the warmest month at 34°C (93°F), while March is the coolest at 31°C (88°F).
The city receives considerable rainfall, with around 1251 mm (49 in) annually. April is the wettest month. It has distinct dry (July to December) and wet (February to April) seasons.
Parnaíba Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Parnaíba - and find the best time to visit.
Monthly Temperature in Parnaíba
The temperature in Parnaíba remains steady throughout the year, providing a consistently very warm climate. Typically, average maximum daytime temperatures range from a very warm 34°C (93°F) in September to a very warm 31°C (88°F) in the coolest month, March.
Nights vary from 26°C (79°F) in September to around 25°C (77°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Parnaíba
Parnaíba has a relatively rainy climate with high precipitation levels, averaging 1251 mm (49 in) of rainfall annually. The climate in Parnaíba shows significant variation throughout the year. Expect heavy rainfall in April, the wettest month, with an average of 306 mm (12 in) of precipitation over 29 rainy days.
In contrast, the driest month September offers drier and sunnier days, with around 2.3 mm (0.1 in) of rainfall over 9 rainy days. For more details, please visit our Parnaíba Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Parnaíba
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: June and July
- Warmest weather: July, August, September, October, November and December
- Fewest rainy days: October and November
- Wettest months: January, February, March, April and May, when rainfall is highest.
- Seasonal pattern: Distinct dry (July to December) and wet (February to April) seasons
Frequently asked questions about the climate in Parnaíba
What is the best time to visit Parnaíba?
June and July typically offer the most optimal weather in Parnaíba. In contrast, February, March, April, August, September, October and November tend to have less optimal conditions. Parnaíba has distinct dry (July to December) and wet (February to April) seasons.
What temperatures can I expect in Parnaíba?
Daytime highs range from 31°C (88°F) in March to 34°C (93°F) in September. Nighttime lows range from 25°C (77°F) to 26°C (79°F). Temperatures stay relatively stable year-round.
How much rain does Parnaíba get?
Annual rainfall is around 1251 mm (49 in). April is the wettest month with 306 mm (12 in), while September is the driest with 2.3 mm (0.1 in).
Parnaíba 3-Day Forecast
Parnaíba on the map
Parnaíba is highlighted - select any city to see its climate.
Popular this month
Where to go in August - average daytime high across popular destinations.
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
The 10 most alternative cities in South America
Discover South America's top 10 alternative cities! From Valparaíso's vibrant streets to La Paz's high-altitude charm and Medellín's innovative spirit.
The 5 most tranquil retreats in the Amazon Rainforest, Brazil
Discover top sustainable lodges in the Amazon. Enjoy unique wildlife, eco-friendly stays, and immersive experiences at Anavilhanas, Cristalino, and more.
An alternative way to discover Rio de Janeiro
Don't feel like seeing the traditional tourist sights in Rio de Janeiro? We have made an overview of the sights in Rio de Janeiro that you must see if you want to visit Rio in an alternative way.
Iguazu Falls
Iguazu Falls are among the largest waterfalls on earth. You will be speechless when you see this miracle of mother nature. They are included in the World Heritage List and have also been named one of the seven wonders of the world.