June through September are the very wet months,the other months get rain but are considered the dry months with the winter months probably being the driest ones.
We always go at this time of year for about 7-9 days at a time and usually have 1 or 2 rainy days while we're there, but only rarely has it rained the ENTIRE day...it's usually just wet for a few hours at most, and then cloudy the rest of the time.