Weather will likely play an important role when you plan your trip to Canaa dos Carajas, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually August and September, with an average temperature of 28°C, while the coldest months are January and March, with an average of 25°C. The rainiest months in Canaa dos Carajas are March, February, January and December, with each month seeing an average of 341 mm of rainfall.