Residents are warned of disruption, with roads and tips closed, as the annual Ironman race returns.
People should not approach Antonio Cruz, who has links to towns across Dorset, police say.
While many farmers count the cost of the hot, dry summer, some have benefited from the conditions.
Dorset Council says steps to the beach will reopen before an annual triathlon on 20 September.
Up to 250 athletes from 40 countries will compete in the iQFOiL World Championships.
Weymouth parkrun was temporarily cancelled in August following a surge in attendance numbers.
A woman in her 20s was raped in the popular seaside town of Weymouth, in Dorset, on Monday night.
Rescuers cried on the boat when Crush the loggerhead turtle was released into the North Atlantic.
Crush the loggerhead turtle will be released into the Atlantic along with two other rescued turtles.
