I've been there in late Nov. early Dec. and we couldn't dive one day.
I've been there twice from mid-Dec to early Jan. and there were a few days that we couldn't dive because of wind and rough seas.
However, when I was there in April 2000, the weather was awesome. Calm seas every day.
There are just no guarantees.
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A fish and a bird can fall in love, but where will they build their nest?