Weather will likely play an important role when you plan your trip to Arta Terme, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually July and August with an average temp of 59°F, while the coldest months are January and February with an average of 32°F. The rainiest months in Arta Terme are November, August, May, and June, with each month seeing an average of 10 inches of rainfall.