Beaches/Surfing - San Diego is home to numerous beaches which are great for everything from surfing to beach volleyball to sunbathing. If you’re planning to spend a day in the sand be sure to pack a beach bag packed with a water bottle, extra sunscreen, and an action camera to capture your day. A sunhat and a swimsuit coverup or rashguard will help protect you from over-exposure to the harsh rays.
Hiking - San Diego County is home to seemingly endless hiking trails, including the famous Torrey Pines state reserve. If you’re headed on a trek be sure to wear sturdy hiking shoes, athletic shorts, and take plenty of water as dehydration can sneak up on you quickly in the dry heat. Additionally, a hiking first aid kit is always a wise addition to your daypack.
Brewery Tour - San Diego and the surrounding areas are home to a steadily increasing number of breweries, all of which offer refreshing beverages to combat the heat. There’s no need to dress up for an excursion like this. You’ll feel most comfortable in jeans (or shorts), a t-shirt and sneakers, or a sundress and flip-flops. Be sure to wear comfortable shoes that are easy to walk in to avoid taking a spill while buzzed.
Nightlife - Downtown San Diego features a collection of lively bars and nightclubs. If you decide to spend a night on the town, you’ll need to be mindful of the dress code many of these institutions enforce. For men a collared shirt is essential; some locations may permit you to enter in jeans while others may require slacks or, at the very least, chinos. You’ll also need to wear dressy shoes -- sneakers won’t cut it. These dress codes are more forgiving toward women, but usually, the safest bet is to wear a dress paired with heels or flats. A small crossbody purse is a smart choice for carrying just the essentials.