check the board for weather here, the maps are great, but the only consistent thing about weather on this island, is that its inconsistent. Its not supposed to rain much in november from what i hear, but its been pouring for a week.
as far as night life, each night has only one "hot spot". When you here just ask anyone what the "spot" is that night, however, all nights seem to start at Fidos till about 11. Live music every night, and a great place to meet local gringos + gringas.
Dont be surprised, but this little island has a great nightlife if you know how to do it up. I doubt it will be packed packed each night, but rest assured that if you want to party until dawn, there are places here to do that, from Big Daddys during most weekdays, to the MUCH MUCH more fun, and worth checking out Jaguars. That place gets packed on a friday night, and the only sunrises i have managed to see since living here were spotted upon leaving jaguars.