My major concern would be getting safely acrossed the Gulf of Tehjuanapec. DO NOT cross this Gulf more than a mile offshore, if that far. There is a low depression in the mountains forming the continantal divide in that region, Weather patterns in this area are influnced by what happens in the Gulf of Mexiico creating an off shore winds and at Salina Cruz gale force winds blow an Average of 135 days a year. This constant offshore gale interacts with the large pacific swells coming from the west that build to great hights.
Listen to the cruisier nets on
SSB or stay in contact with those that have the
radio. When you get a four day window,
motor sail like hell staying close to the beach. A popular saying is that if you can't hear the
dogs on shore barking, you're to far offshore. Don't stop at Salina Cruz, its a
commercial port and you're unwelcome.
I tried to cut the corner and found ten foot seas five miles offshore during a four day weather window and returned to shore where the waves were more manageable.
Costa Rico has a very large rain forest as does
Panama. There is a rainy season and a not so rainy season. During the rainy eason it can rain several inches per day, the not so rainy season it seldon rains an inch when it rains.
The Gulf of Nicoya is an absolutly great to spend months cruising, don't miss it!.