This weekend’s mostly for sweltering at the beach or escaping to an air-conditioned movie theater. But it’s supposed to cool down around 5 PM on Friday, which is when the Southport Summer Stroll begins (it goes til 8), featuring sales from area merchants as well as live music and free food. Make sure to stop by Tula for the shop’s Summer Accessories Bazaar, featuring bags, bangles, and more from designers such as Chan Luu and Alexis Bittar. That runs through Sunday.