Ahoy Captains,

"In total, 94 percent of jellyfish swarms arrived after the middle of the year when the seas are warmer and during the second and third weeks of the lunar month. The ideal water temperature for the jellyfish is between 28.2 and 30 degrees, the research found. "
From - https://phys.org/news/2016-08-moon-key-jellyfish-beach.html.
"The jellies take a one-way trip to the beach from deeper environments to spawn and die around eight to 12 days after the full moon, and just before the new moon"
From - https://www.hawaiinewsnow.com/2022/...full-moon-that-means-well-see-them-soon/
Therefore the weeks between Full Moons in July? and Aug/Sept/Oct.

Fair Winds, Brent from thecaptainscompass.com