WINTER – December, January, February
Winter is the wettest season in San Diego, but that isn’t exactly saying much, and it generally averages about 2 inches of precipitation per month. During these months the average daily temperature is in the mid to low 60’s, though there may be the occasional hot day. If visiting during this season be sure to pack layers; you’ll likely be warm during the day and cool at night. A rain jacket is good to have on hand in case of emergency, but typically rain showers don’t last for long.
SPRING – March, April, May
Spring is pleasant in San Diego. It is dry, and the temperature usually averages in the mid 60’s. It does tend to be cool at night (in the mid-50’s), so it’s important to bring warm layers for early mornings and evenings, but generally, you’ll be comfortable in shorts (or jeans) and a t-shirt.
SUMMER – June, July, August
San Diego summers are usually quite warm, with temperatures averaging in the high 70’s. However, mid-May through June can often be foggy and chilly, at least for part of the day. As always, light layers are a great way to ensure you’re never too hot or too cold. Generally speaking though, you’ll be comfortable in beach attire throughout this season.
FALL – September, October, November
Autumn in San Diego is one of the most pleasant times of the year. Often the summer weather carries over through October, meaning the days are pleasantly warm while the beaches are no longer crowded. Again, it’s wise to wear layers at this time of year, as the temperatures can be brisk in the evenings. A pashmina or a lightweight fleece is the perfect remedy for chilly weather.
Dressing appropriately for San Diego activities – (Click to expand)
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.