If you’re hoping to get lost in the rain on your romantic getaway, take a look at these details about year-round temperatures in Casarza Ligure: The hottest months are usually August and July, with an average temperature of 22°C, while the coldest months are February and January, with an average of 9°C. The rainiest months in Casarza Ligure are November, October, December and January, with each month seeing an average of 190 mm of rainfall.