Originally Posted by terradagua
and I would like to know when is the best time to do this crossing.
We have done that passage
- actually Cape Verde to Uruguay but going right by Brazil.
There is no terrible time to do it, but some times are better than others.
There are two challenges on this passage
- the doldrums and the headwinds when you cross the equator. Optimally you are looking for the doldrums to be as narrow as possible and for the winds south if the equator to be as easterly (rather than southerly) as possible. Those two things unfortunately don't happen at the same time. The doldrums are at their narrowest just before the hurricane
season (May/july) while just on the south side are at their least southerly in the winter (Northern hemisphere).
What to do depends a bit on where you are heading to Brazil. If you are heading for northern Brazil you cross the doldrums quite far west where the doldrums are narrowest and you probably want to do that in mid-winter (N hemi) to get the best wind
If you are heading south of the bulge you probably need to cross the doldrums further east (in order to get a sailing angle to below the bulge), where they will naturally be wider all year around and you might want to do it spring/fall to try to get them a bit narrower. I would carry some decent fuel
supply if you can.
There is sometimes quite a bit of lightning
just south of the cape Verde's and the black rain cloud squalls can pack a punch at 2am, so be ready to reef down quickly at night.
But its generally a pretty decent and fast passage.