The BBC should bring an end to "forecast discrimination" by putting Jersey back on its weather map, the island's tourism authority has said.
A petition has been launched in a campaign that is also calling for more accurate weather forecasts.
Jersey Tourism claims incorrect temperature predictions are causing local businesses to lose out on millions of pounds of revenue from missed visitors.
The island was only mentioned in 10% of BBC weather forecasts in a month, according to research by Jersey Tourism.
And Jersey was given a temperature marker in only 30% of forecasts, with its local weather mentioned specifically in only 5%, the research showed.
A Jersey Tourism spokesman added that the weather was incorrectly reported in 24 out of 26 forecasts in national newspapers.
David de Carteret, director of Jersey Tourism, said: "Jersey has more sunshine hours than anywhere in the British Isles and we think that being excluded does us a disservice.
"Many people don't have any idea just how lovely the weather is a short hop away from the mainland and for that reason wouldn't consider holidaying in the island, meaning that we lose out on a considerable sum of valuable income."
A spokesman for the UK Met Office said: "We do not put Jersey on the Met Office pages because it has its own meteorological service.
"The BBC does cover Jersey and that information does come from us but they create their own maps."