Firefighters are still pumping water from roads in Rhyl after yesterday's storm surge.
Police say they have received no reports of flooding during last night's high tide.
There are two flood alerts this morning from Anglesey to Deeside and on Gower.
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Rhondda MP Chris Bryant says security measures at the Palace of Westminster should be reviewed following yesterday's terror attack.
It comes after volunteer beach cleaners found balloon litter on beaches had increased by 53.5% between 2015 and 2016.
Almost £13,000 has been handed out in fines since tailgating became a punishable offence.