Viareggio is a classic seaside resort town complete with a climate that remains mild year-round. As can be expected for such a destination, the summers are hot during a time when lying on the beach is the order of the day and the Tuscan Sun is in full effect. June and August are the hottest months, with highs in the mid-80s and lows in the lower 60s. The region sees over 270 sunny days every year. The summers are especially sunny. Rain during the summer months takes the form of short but powerful thunderstorms. 

    During the winter, Viareggio is not especially conducive to sunbathing. This time of year sees more rain and cloudy days and temperatures are cool but not extremely cold. The average highs during the coldest months, December, January and February, is in the lower-50s. Average lows are around the mid- to upper-30s. Precipitation is more prevalent, although rainfall is consistent throughout the year due to Viareggio's location near the sea.

    Thus, tourist season is during the summer, when rates for everything from hotel rooms to flights are more expensive. It wouldn't be a bad idea to visit Viareggio during the off-peak months of September or late April, when it is still warm enough to enjoy Viareggio, but not as expensive.