The airline and operator said it was keeping tabs on "unusual adverse weather conditions" in a small number of European destinations.
It follows disruption to its Rhodes programme earlier in the summer owing to wildfires, as well as its Skiathos programme owing to Storm Daniel.
The Balearics were also hit by high winds and heavy rains late last month, with the conditions leading to a collision between P&O Cruises’ Britannia and an oil tanker.