Those of us who live here prefer the summer months. Occasional brief rains green up the gardens and keep down the dust, the sea temps are about 90 (swim for hours wihtout getting chilled) and the waters are calm (best visibiity for snorkeling and diving). Whilst it is hot on AC in July, daytime temps rarely exceed 95, which is still a lot cooler than most of the southern US. Sea breezes come up in the evening ......... all in all July is a pretty special time of year. Enjoy your visit!
PS - yes there is always nightlife here - there are plenty of locals to support it.