A large gathering of youths on Formby beach had to be broken up by police and others turned away, as Merseyside basked in the sun on the 'hottest day of the year'.
At around 1pm on Wednesday police were called to a gathering at the beach and turned away others trying to attend the gathering.
Police stressed that the new changes to social distancing rules do not "come into effect for another 10 days".
Excessive littering, fires, and illegal parking blocking driveways and residential roads has also been reported during recent spells of good weather.
Police will remain in the area at Formby beach as well as Ainsdale and Crosby beach as well as parks and beauty spots such as Formby nature reserve.
The move comes after police dispersed several raves and large gatherings to enforce the current coronavirus lockdown guidance.
Chief Inspector Andy Rankine of Merseyside Police said: "I would like to thank the vast majority of people who are adhering to social distancing measures and protecting the wider community from the virus, as well as those keeping an eye out for suspicious behaviour and reporting it to us.
"We will respond to reports of people forming large gatherings, and our significant presence on the Sefton coastline. will be on hand to ensure such crowds are dispersed.
"As the Government have stated, it is thanks to those people who are being sensible and abiding by the guidelines that plans have been made to further relax the restrictions in the near future.
"But in order for Merseyside and the rest of the country to return to some state of normality as soon as possible, we need everyone to continue to show the same patience and commitment of the past three months.
“We completely understand how frustrated people have been about having their movement restricted, and not being able to embrace family members or visit restaurants and bars. But the more people respect what they have been asked to do, the sooner all those things will be possible.
“The virus has not gone away; 5,452 people are reported to have contracted coronavirus across Merseyside to date – 974 in Sefton alone – and many of them are still unwell. A total of 1,081 who have tested positive in hospital have sadly died.
“If you are a parent or guardian, please ask where your child is going and who they’re meeting. This pandemic affects us all and it is in your best interest that illegal gatherings are stopped before they are given the chance to materialise.”
