The Met Office has issued a yellow weather warning over parts of South Powys.
Strong winds are set to sweep across the country from west to east on Sunday, September 29.
The yellow weather warning covers Ystradgynlais and Llandovery and the strong winds are likely to affect Brecon and the surrounding areas.
A spokesperson for the Met Office has said: “Winds will strengthen from west to east during Sunday, with gusts of 50-55 mph likely in places, especially near coasts and over/to the west of high ground, perhaps exceeding 60 mph in the most exposed areas.
“This will be accompanied by outbreaks of rain, heavy at times, which could lead to some surface water and spray. Winds will gradually ease across Wales and inland parts of southwest England through Sunday evening and night, but it may remain fairly windy along some coasts of southern and southwestern England during Sunday night.”
There is a chance of delays to public transport and possible power cuts.
The Met Office’s warning impact matrix predicts that the strong winds are likely to occur but with a low impact.