The Met Office has issued a yellow weather for wind and rain on Sunday, January 21.
The wind warning, covering the whole of Wales and its borders will last from 6am on Sunday to 6am on Monday, January 22.
Winds of 50-60mph are likely to occur inland and gusts may reach 60-70 mph for exposed locations.
The strong winds could mean longer journey times for public transport services.
There is a slight chance of some damage to buildings, such as tiles blown from roofs, and power cuts may occur throughout this period.
In this same time frame, the Met Office has also issued a yellow weather warning for heavy rain across the majority of Wales.
20-50 mm of rainfall is likely to occur in spells of heavy rain that could make journey times longer for vehicles and public transport services.
Spray and flooding on roads will also take place due to the heavy rain.