Dr Robert Keirle of the Marine Conservation Society says the wet summer of 2012 is partly to blame for a decline in some Welsh bathing beaches.
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The Welsh Government has u-turned on its decision to scrap its youth bus discount scheme.
The rain will become heavy for a time in the west and winds will strengthen, but temperatures remaining mild for the time of year.
Jordan Matthews has been sentenced to life in prison, minimum term 18 years, for the murder of his girlfriend, Xixi Bi.