In most cases, you shouldn’t be worried about condensation forming on your windows.
These droplets appear when moisture in the air makes contact with cold surfaces, such as tiles and windows. Condensation forming on the outer panes of a window unit is perfectly normal and shows that the window is working as it should!
However, if condensation appears between the panes of your double or triple-glazed units this would require investigating further. For more information, please see our dedicated resource.