RNLI Barmouth have asked visitors not to park in front of the boathouse as it could make it impossible for them to get the lifeboats out if there is an emergency call.
The team posted images on their social media accounts showing that people had parked on the box junction marked with crossing yellow lines in front of the building.
“Please do not use the boathouse forecourt as a car park,” a spokesperson for RNLI Barmouth said.
“We need this space for the crew to park in case of a shout and to get the lifeboats out. You are potentially putting lives at risks parking here.”
There were also parking problems elsewhere in Snowdonia, as North Wales Police were called in to assist Gwynedd Council officers saying more than 500 vehicles had parked on the roadside near Snowdon.
After weeks of empty roads, there were traffic jams on the A55 as tourists flocked to take advantage of the first weekend sun since the lifting of lockdown restrictions on tourism accommodation and attractions.
North Wales police also complained of rubbish being left at tourist sites. The force published pictures of rubbish on The Great Orme near Llanberis.
“This litter has now been cleaned up by officers,” they said. “Please take you rubbish home, this is unacceptable.”