The rest of the country will be under a Status Yellow warning from 5am on Friday until 6am on Saturday.
The weather assessment team at Galway city council have analysed the latest information from Met Éireann and the OPW Tide & Surge site and have been in contact with the Galway Harbour master.
Very high seas are expected as well with some coastal flooding.
The issue is caused by the high winds now battering large parts of Northern Ireland - there are now seven issues right across the country.
Storm Erik has arrived, then, and he's not messing about.
Met Office chief meteorologist Will Lang said southern and central England would not escape the brutal gales despite not being directly in the path of the storm, adding that Friday would be a "windy day for everyone".
The weather service said Erik will track to the northwest of the country and have issued a number of warnings.
Heavy rain and strong winds are also expected to continue to wreak havoc with those staying in, with fallen trees having already caused dozens of homes in Cornwall to experience power cuts.
Those who intend to travel over the weekend have also been advised that unpleasant conditions could disrupt their plans.
"Rain will clear to the east in the evening, but with frequent heavy showers following".