Weather will likely play an important role when you plan your trip to Arcabuco, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually February and January, with an average temperature of 13°C, while the coldest months are August and September, with an average of 12°C. The rainiest months in Arcabuco are April, November, March and May, with each month seeing an average of 213 mm of rainfall.