What to wear to Alcatraz
I’ve seen every version of getting this wrong: shorts in July, heels on the dock ramp, one optimistic sundress in a stiff wind. The bay makes its own weather, and fog and wind flip in minutes at any season, so the month on the calendar tells you almost nothing. Carry a warm layer and a windproof one year-round; you can always tie them round your waist if the sun wins.
Shoes matter as much as the jacket. The walk from the dock to the cellhouse is a quarter mile uphill with 130 feet of climb, a 13-story stair that is steep in places, and you’ll be on your feet for most of the 2 to 3 hours a visit takes (the full timing is on how long it takes). A free S.E.A.T. tram serves visitors with mobility needs.
Booking the evening ferry? Dress a notch warmer again — the deck after sunset is cold in any season. I compare the two departures in day vs night.
Bottled water is allowed everywhere on the island and only light snacks are sold, so a small bag with water, a snack and that spare layer covers everything the island will throw at you.
Frequently asked questions
Is it colder on Alcatraz than in San Francisco?
Yes — count on 10 to 15°F cooler than downtown, plus wind on the crossing and on the island’s exposed paths. The fog can roll in mid-visit at any time of year.
Can I swim or dress for the beach at Alcatraz?
No. The bay runs 50 to 60°F even in summer, with strong currents — the very reason no inmate ever swam away. Dress for wind, not water, and see the Pier 33 basics for the boarding logistics.
What should I bring besides clothes?
Water, comfortable shoes and, on the night option, your own headphones and a charged smartphone — the $95 package requires both. Personal photography is allowed, with flash restricted indoors.