Ruedi Wragg has been found guilty of three counts of malicious damage at Jersey’s Magistrate’s Court.
The 63-year-old was arrested at the climate change mural on the Waterfront on Boxing Day 2021 after islanders tipped off police.
Wragg was found wearing a motorbike helmet with spray cans and a step ladder.
He vandalised the mural in November and December 2021.
He was given a Binding Over Order and told to pay compensation and costs.
DC Caroline Foord says unauthorised graffiti is vandalism.
"Wragg’s actions on these occasions ruined a public piece of art that had to be cleaned up and redesigned at a cost to taxpayers to over £4,000.”
The mural shows a collection of coloured stripes, which represent the year's average temperature. The most recent addition was 2022's 'very dark red stripe' for the hottest year on record.
Graffiti can be reported online at Love Jersey or the police website.
£75,500 raised in Jersey Christmas Appeal Charity Auction
Government to announce support option for carers
Drink driving can cause 'life-changing' consequences
Parked cars damaged in Victoria Avenue crash
L'Ecume II: Lewis Carr jailed for 20 months for fatal collision at sea
Guernsey's former Chief Minister admits making indecent images of children
Minister approves 42 sheltered homes at nursing home
Jersey potato farm to be the site of Channel Islands' largest roof solar array
