You can spend time browsing the exhibits at Museu Histórico Municipal during your travels in Guajará-Mirim. Take in the museums while you're in the area.
The hottest months are usually September and August, with an average temperature of 27°C, while the coldest months are July and June, with an average of 26°C. The rainiest months in Guajará-Mirim are January, March, February and December, with each month seeing an average of 344 mm of rainfall.