The forecast is for a swathe of strong winds, accompanied by heavy rain at times, which will move east across the country on Saturday.
This is expected to bring gusts of 45-55mph, perhaps 60mph later.
A Met Office spokesman said: “Please be aware of the possibility of localised travel disruption.
“An active frontal zone is expected advance steadily east across the country through Saturday, accompanied by strong, gusty winds and periods of heavy rain.
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“Whilst the strongest gusts are likely to be confined to coastal districts at first, and in the immediate vicinity of the front, gales are likely to become more widespread inland later in the morning and through the afternoon. Winds should ease markedly as the front clears through, particularly in the south.”
The warning is currently valid on Saturday March 26 from 6am until 9pm across much of the country.