Quick Answer

San Francisco is worth it as a compact, walkable US city break, but go in September or October if you want sun: NOAA’s 1991-2020 normals for the Downtown station put average highs at about 21°C then, against 19 to 20°C in a foggy summer and about 14°C in December and January, the wettest months. Stay around Union Square for the cable cars and BART, Fisherman’s Wharf or North Beach for the waterfront, or the Marina for a quieter base near the Golden Gate Bridge. BART runs from the airport to Powell Street in about 30 minutes for around $11.80. Alcatraz day tickets from Alcatraz City Cruises, the only ferry the National Park Service authorises, cost $47.95 for adults and sell out, so book ahead. A cable car ride costs $9. Plan three to four days, and get an ESTA ($40.27) on the official CBP site before you fly.

At a glance

Best time
September and October, the warmest months
Time needed
3 to 4 days
Currency
US dollar (USD)
Language
English
From the airport
BART from SFO, about 30 minutes
Visa
ESTA ($40.27) or US visa
Getting around
Muni $2.85, cable car $9

San Francisco packs a lot into a small, hilly peninsula: a prison island, a famous bridge you can walk across for free, and cable cars that still climb the steepest streets. Most of the city is reachable on foot and by Muni, so you can skip the rental car until you head out of town. Fares and fees below were checked on 9 October 2026.

When is the best time to visit San Francisco?

Early autumn. The city’s summer is cool and often foggy, and its warmest weather comes in September and October. Winter is mild but wet.

MonthAverage high / low, Downtown (NOAA)RainWhat to expect
December14.4°C / 8.3°Cabout 121 mm, the wettestCool, rainy spells, holiday lights
January14.3°C / 8.1°Cabout 112 mmMild days between storms, lower hotel prices
February15.8°C / 8.8°Cabout 111 mmGreen hills, still wet
March16.7°C / 9.4°Cabout 80 mmDrying out, clearer days
April–June17.2–19.2°C / 9.8–11.7°C5–41 mmMostly dry, fog building by June
July–August19.1–19.9°C / 12.4–13.1°C0–2 mmDry but foggy and windy, busiest months
September–October21.0–21.2°C / 12.4–13.1°C3–24 mmWarmest and clearest, the best window
November17.6°C / 10.4°Cabout 66 mmRain returns, fewer crowds

Figures are NOAA’s 1991-2020 normals for the San Francisco Downtown station. The airport station, south of the city, is slightly warmer by day in summer (about 23°C in August). If you want real winter sun, Los Angeles is about 5°C warmer in January and Honolulu is warmer still; see our where to go in December guide for more options.

Where should you stay in San Francisco?

Neighbourhoods change block by block here, so the exact street matters as much as the area.

AreaBest forTrade-off
Union SquareFirst-timers: Powell Street cable cars, BART, shopping, the most hotelsEdges onto the Tenderloin to the south-west, where street drug use and homelessness are visible; pick a hotel north or east of the square
Fisherman’s WharfThe Alcatraz ferry at Pier 33, the waterfront, familiesTouristy and pricey for what you get; quiet after dark
North Beach and ChinatownCafés, bakeries, walkable to the Wharf and downtownOlder, smaller rooms; hilly streets
Marina and Cow HollowA calmer base near the Golden Gate Bridge and PresidioFew rail links; you rely on Muni buses
SoMaNewer hotels, the Moscone Center, often weekend dealsSome empty blocks at night, especially around Sixth Street

First trip? Union Square is the practical choice for transport, as long as you book north of Market Street, while North Beach suits travellers who want a neighbourhood feel. Compare San Francisco hotel prices by area .

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How do you get to and around San Francisco?

San Francisco International Airport sits about 30 minutes south of downtown by train. Flying on to Hawaii? See cheap flights from San Francisco to Honolulu, and our United Airlines review, since SFO is one of United’s hubs.

What should you not miss in San Francisco?

SightPrice (2026)Tip
AlcatrazDay tour $47.95 adults, $45.15 seniors 62+, $29.15 ages 5–11; night tour $59.65 adultsOnly via Alcatraz City Cruises from Pier 33; tickets open 90 days ahead; allow a few hours on the island
Golden Gate BridgeFree to walkPedestrians use the east sidewalk, open 5 a.m. to 6:30 p.m. in winter and to 9 p.m. in summer
Cable cars$9 a rideThe two Powell lines run from Powell and Market to the Fisherman’s Wharf area; the California line runs to Van Ness Avenue
Japanese Tea Garden, Golden Gate ParkPaid timed entry; free Monday, Wednesday and Friday 9–10 a.m.Last entry 4:30 p.m. from November to February; reserve a time slot in advance
Golden Gate ParkFreeWalk or cycle from the park west to Ocean Beach
Chinatown and North BeachFree to walkBakeries, dim sum and cafés, a short walk from Union Square

Alcatraz is the one sight to book first: the National Park Service says the weather on the island changes quickly, so bring a light jacket even on a sunny day. For the bridge, the classic viewpoints are on the San Francisco side near the Presidio; walking the full span and back takes an afternoon, and the sidewalk closes at 6:30 p.m. in winter.

What day trips can you take from San Francisco?

  • Muir Woods. Old-growth redwoods across the Golden Gate Bridge in Marin County. Entry costs $15 per person aged 16 and over, and every car and shuttle rider needs a reservation on GoMuirWoods.com ($10 to park a standard car, $4 for an adult shuttle ticket).
  • Yosemite. Better as an overnight trip than a day trip, given the drive. Yosemite dropped its timed-entry reservation system for 2026, but entry is $35 per car for seven days, plus a $100 per person fee for non-US residents aged 16 and over unless they hold the $250 America the Beautiful nonresident pass.

What goes wrong on a San Francisco trip?

  • Packing for California sun in July. Summer days at the Downtown station average under 20°C, and the fog makes it feel colder. Bring a warm layer in every season.
  • Leaving anything in a parked car. Car break-ins are common at viewpoints and in tourist areas. Leave the car empty, or skip renting one while you stay in the city.
  • Booking the cheapest hotel without checking the block. Some low-priced hotels sit in the Tenderloin or on the rougher stretches of Market and Sixth Street. Check the exact address before you pay.
  • Expecting to buy Alcatraz tickets on the day. Day tours regularly sell out; book on the official Alcatraz City Cruises site, not a reseller.
  • Missing the bridge’s closing time. The pedestrian sidewalk shuts at 6:30 p.m. in winter, so a sunset walk needs planning.
  • Using a copycat ESTA site. Visa Waiver Program travellers need an approved ESTA, which costs $40.27 on the official esta.cbp.dhs.gov site.

For data on landing, compare plans in our best eSIM for the USA guide.

How many days do you need in San Francisco?

Three to four days covers it: Alcatraz and the waterfront on day one, the Golden Gate Bridge, Presidio and Golden Gate Park on day two, cable cars, Chinatown and North Beach on day three, and Muir Woods on day four. Combining coasts? New York is a cross-country flight away, and Los Angeles is the obvious pairing down the coast.

Sources

Climate figures come from NOAA’s 1991-2020 normals for the San Francisco Downtown and San Francisco International Airport stations; Alcatraz, Muir Woods and Yosemite fees from the National Park Service; Muni and cable car fares from the SFMTA; BART fares and payment from BART; bridge sidewalk hours from the Golden Gate Bridge, Highway and Transportation District; ESTA rules from US Customs and Border Protection. The full list is in the sources box at the end of this page.

Frequently Asked Questions

What is the best time to visit San Francisco?

September and October are the best months. NOAA’s 1991-2020 normals for the San Francisco Downtown station show average highs of about 21°C in both months, the warmest of the year, with little rain. June to August is cooler than most visitors expect, at about 19 to 20°C, and December to February is the wettest stretch, at about 110 to 120 mm a month.

Is San Francisco warm in winter?

No, it is mild and cool. NOAA’s normals for the Downtown station show average highs of about 14°C in December and January and 16°C in February, with lows around 8 to 9°C. It rarely freezes, but winter is the rainy season, so pack a waterproof jacket and layers.

How do I get from SFO to downtown San Francisco?

Take BART from the station on Level 3 of the International Terminal. Trains reach Powell Street in about 30 minutes, and the fare to downtown stations such as Powell Street or Embarcadero is around $11.80. Pay with a Clipper card or tap a contactless bank card or phone; BART no longer accepts paper tickets.

How much are Alcatraz tickets?

Alcatraz day tour tickets cost $47.95 for adults, $45.15 for seniors aged 62 and over and $29.15 for children aged 5 to 11, and the night tour costs $59.65 for adults. Alcatraz City Cruises is the only ferry operator authorised by the National Park Service, sailing from Pier 33, and tickets go on sale up to 90 days ahead.

How much does a San Francisco cable car ride cost?

A single cable car ride costs $9, paid with a Clipper card, the MuniMobile app or exact change in cash. At the Powell and Market, Bay and Taylor, and Hyde and Beach terminals you must buy your fare before boarding between 8 a.m. and 8 p.m. A Muni Visitor Passport, at $15 for one day or $35 for three days, includes cable cars.

How many days do you need in San Francisco?

Three to four days covers San Francisco well: one day for Alcatraz and the waterfront, one for the Golden Gate Bridge and Golden Gate Park, and one for the cable cars, Chinatown and North Beach. Add a fourth day for Muir Woods, and at least one night if you want to see Yosemite.

Start planning your San Francisco trip

If a package already covers your hotel, you don’t need this part. If you’re booking flights and a room separately, look at September and October first for the best weather, or January for lower hotel prices.

Find cheap flights to San Francisco | Compare San Francisco hotel prices

Planning the wider trip? See our USA travel guide, Los Angeles, Honolulu, New York and the hotels hub.