Other facts from our historical weather data: When is the rainy season in Araguaína? Rainy season in Araguaína occurs in the months of January, February, March, April, November and December. Does Araguaína have a dry season? Yes, the months of June, July and August are very dry. Which is the hottest month in Araguaína? August has an average maximum temperature of 36°C (97°F) and is the hottest month of the year. Which is the coolest month in Araguaína? The coolest month is July with an average maximum temperature of 31°C (88°F). Which is the wettest month in Araguaína? February tops the wettest month list with 325mm (12.8 in) of rainfall. Which is the driest month in Araguaína? July is the driest month with 3mm (0.1 in) of precipitation. No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.