Members of the Ogwen Valley Mountain Rescue team will take part in a New Year's Day swim to help raise money for new equipment.
The rescuers will take a dip in the Snowdonia lake, Llyn Ogwen.
They're hoping to raise enough money to buy an industrial-strength dehumidifier to dry out their equipment after rescues,
More top news
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.