Ronaldsway Met Office has issued a weather warning for tomorrow morning.
The yellow warning runs from 8am until midday.
Forecasters say Douglas, Castletown, Laxey and Ramsey promenades could see coastal overtopping, as well as Shore Road in Rushen.
Strong winds may drive water and debris onto roads around high tide at 10am.
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Credit Union sets post-TT reopening date
Baby fair returns to Santon this weekend
0.03% of smart meter installations led to concerns or complaints, says Manx Utilities
Event tonight to discuss historic church's future
Broadband firm has licence revoked
£484k spent on TT course after inspections by organisers and DOI