Alter do Chao Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Alter do Chao.
Climate overview of Alter do Chao
Alter do Chao, Pará, Brazil, enjoys a steady climate throughout the year, with daytime temperatures typically around 31°C (88°F). October is the warmest month at 33°C (91°F), while April is the coolest at 30°C (86°F).
The city has a wet climate, receiving around 3534 mm (139 in) of rainfall per year. Despite the high annual total, it has a distinct rainy season from November to June. March is the wettest month. August is the sunniest month, averaging 8.4 hours of sunshine per day.
Alter do Chao Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Alter do Chao - and find the best time to visit.
Monthly Temperature in Alter do Chao
The temperature in Alter do Chao remains steady throughout the year, providing a consistently very warm climate. On average, daytime temperatures range from a very warm 33°C (91°F) in October to a comfortable 30°C (86°F) in April.
Nighttime temperatures range from 27°C (81°F) in October to 25°C (77°F) in April.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Alter do Chao
Alter do Chao has a relatively rainy climate with high precipitation levels, averaging 3534 mm (139 in) of rainfall annually. The seasons in Alter do Chao bring significant changes in precipitation. The wettest month, March, receives heavy rainfall, with an average of 553 mm (22 in) of precipitation. This rainfall is distributed across 27 rainy days.
In contrast, the driest month, September, experiences much less rainfall, totaling 86 mm (3.4 in) over 8 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Alter do Chao Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Alter do Chao
In Alter do Chao, summer days are longer and more sunny, with daily sunshine hours peaking at 8.4 hours in August. As the darker season arrives, the brightness of the sun becomes less. February sees a soft sun for only 4.1 hours per average day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Humidity in Alter do Chao by Month
The city experiences its highest humidity in May, reaching 93%. In November, the humidity drops to its lowest level at 85%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Alter do Chao
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: August
- Warmest weather: August, September, October, November and December
- Most sunshine: August and September
- Fewest rainy days: August, September, October and November
- Wettest months: January, February, March, April and May, when rainfall is highest.
- Seasonal pattern: A distinct rainy season from November to June
Frequently asked questions about the climate in Alter do Chao
What is the best time to visit Alter do Chao?
August typically offers the most optimal weather in Alter do Chao. In contrast, January, February, March, April, May, June, October and December tend to have less optimal conditions. Alter do Chao has a distinct rainy season from November to June.
What temperatures can I expect in Alter do Chao?
Daytime highs range from 30°C (86°F) in April to 33°C (91°F) in October. Nighttime lows range from 25°C (77°F) to 27°C (81°F). Temperatures stay relatively stable year-round.
How much rain does Alter do Chao get?
Annual rainfall is around 3534 mm (139 in). March is the wettest month with 553 mm (22 in), while September is the driest with 86 mm (3.4 in).
How sunny is Alter do Chao?
Alter do Chao receives around 2,258 hours of sunshine per year. August is the sunniest month with 251 hours, while February is the cloudiest with just 122 hours. Overall, Alter do Chao enjoys abundant sunshine.
Alter do Chao 3-Day Forecast
Alter do Chao on the map
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