Weather will likely play an important role when you plan your trip to Siquirres, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually September and May with an average temp of 79°F, while the coldest months are January and February with an average of 76°F. The rainiest months in Siquirres are July, November, August, and June, with each month seeing an average of 19 inches of rainfall.