Overnight highs have reached 20C - "not normal", says Aemet.
The guild of dry stone workers wants roads to be declared an asset in the cultural interest.
Some motorbikes create an enormous amount of noise and pose a risk to road safety.
The Tramuntana Mountains Majorca World Heritage mark is being created.
It is reckoned that 350,000 hikers will be coming to Majorca.
In 2017, there were 21 accidents along the Torrent de Pareis, one of the riskier parts of the mountains.
Not all bikers are reckless but there is a minority who create danger and noise pollution.
"The result is usually chaos, with cars parked in the middle of the road and very long queues."
There is no overall plan which sets out lines of management responsibility, but these are essential for meeting objectives.
Goats are eating yews despite the fact that they are toxic.
"With wonderful views, cliffs and the stunning colour of water, it should be savoured in stages so as to appreciate it most memorably."