Winter · Mornings and evenings tend to be chilly. A warm
overcoat and sweater are appropriate attire. The Bay Area sees most of its
rainfall in the winter months which makes packing an umbrella a good idea.
Spring · The spring months in San Francisco are true to season. Linen and cotton clothing is ideal, however, pack a sweater or medium-weight jacket for likely temperature changes. In the spring, the flowers are in bloom and those prone to allergies should pack necessary medication.
Summer · Legend has it that Mark Twain once said the coldest winter he ever spent was a summer in San Francisco. Chilling morning and evening fog is common during summer months. Bring a sweater or a medium-weight jacket. You may encounter cool temperatures during a day on the bay, at Alcatraz or walking the bridge. Evenings are typically cool. Women should pack a blazer or dressy coat for a night out. Men will be comfortable in a sports jacket and long pants.
Note: If you intend to travel to neighboring counties north (Marin or Napa) or south (San Jose to Santa Cruz), pack typical summer clothing such as shorts and T-shirts.
Fall · The City sees its best weather in the fall from September to October. Temperatures are known to rise into the 70s and 80s, a "heat wave" by San Francisco standards. Remember that the bay is breezy and a medium-weight jacket is always a good idea whatever time of year you choose to visit.
|High and Low San Francisco Daily Temperatures|