Cavalaire-sur-Mer is generally considered a safe destination for solo female travelers. Like any other destination, you need to keep your wits about you and have a sensible approach to safety, but there is a low crime rate here. The locals are welcoming and friendly, the atmosphere is relaxed, and the area is well policed. There is also a healthy tourist infrastructure in place. Avoid less crowded areas at night as a general precaution, just like in any other place, but overall solo women travelers should feel very comfortable in Cavalaire-sur-Mer.