Noonsite has some decent info. Generally... hurricane
free area so boats spend year round in CR. Traditional cruising season is Dec - April.
North CR is very dry from Dec - May ish.. not a drop but home to the at times fierce Papagayo winds, that come out of the E-NE. That weather
zone runs from the Nicaragua
border on down to the Flamingo area. Lots of great anchorages
in the north but beware of the wind
. 4 Seasons.. Papagayo Marina opened for business on Dec 15, 2008 and is fully operational.
Central area is Gulfo De Nicoya which is good. Strong Papagayo winds will whip down this Gulfo out of the north strong at night, generally letting up during the day. Very little rain in this region Dec - May.
Southern region is Quepos to Golfito.... rainy zone.. less in Quepos.. but daily rains in golfito. Benign wind
zone.. light at night, a bit of offshore
breeze very early in AM till 8 or 9.. then glass off before a light 10-12 knot
Quepos is building a marina called Pez Vela due to open next year.. decent anchorage around there. Los Suenos marina is north of Quepos and is expensive and a Marriott resort. Puntarenas is probably the heart of boating
in CR. Golfito in the south has several options.
Another good book is Charlies Charts
that shows all the anchorages...
I have spent months in CR on bigger boats, have done just about all anchorages and ports
... if you have specific questions just ask and i might be able to help.
hope this helps...