October in Arequipa is the windiest month of the year. In October, the weather in Arequipa is typically warm. Average daily high temperature in October is about 17 degrees above zero. On average, Arequipa has 15 sunny, 11 partly cloudy, and 5 cloudy days in October. October as well as May, June, July, and August is considered the most comfortable time to visit Arequipa.