Forecasters have issued a yellow weather warning for tomorrow.
The Met Office says high spring tides could mean waves and debris washing over Castletown and Douglas Promenades.
The warning runs from 11.45am to 1.45pm on Tuesday.
There's also a possibility of flooding around inner harbours around the Tongue, North Quay and Lake Road in Douglas and as well as Mezeron Corner and West Quay in Ramsey at high tide at around 12.45pm.
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