The tropical wave that is just a bit north of us

When the waves go north of Grenada (to St Lucia or higher up) then the winds stop after every rain shower.
That is bad for a few reasons. First, the flying insects can buzz out to your boat no matter how far off the shoreline you are anchored. Second, no wind… and it is hot here (well not so bad, but when the wind stops it is hot). In Hurricane season, nights are 79F to 80F and days are 87F to 90F with 90+ humidity. Finally, if it is strong enough, the wind changes direction to the West and so all the boats rotate 180deg and not all boats use the same amount of anchor line. This can be messy in crowded anchorages.
When the wave passes us then we get clear skies and steady trade winds.