DownUnderwater Dan
Contributor
Rainy season, with its choppy high seas, isn't the time to go on a small craft (banka) from Sanur to Nusa Penida for snorkeling. Tourists need to be aware of these safety issues when traveling.
In my experience, all 12 months can experience big swells, high waves, & choppy conditions, on days/weeks on end. Some years vary, that's for sure. I agree, tourists need to be aware & prepared.
I know for all dive operators in Lembongan/Penida, good captains & boat crew with local knowledge, are of immense value.