City Guide
The best months to visit San Francisco are September and October, when temperatures reach 62°F–68°F (17°C–20°C), hotel rates drop from summer peaks, and crowds thin after the August rush. Spring, from March through May, runs a close second, offering mild weather around 57°F–63°F (14°C–17°C) and mid-range pricing before summer demand kicks in. January and February give budget travelers the lowest rates of the year, though fog and rain are common.
Spring brings some of the most pleasant conditions San Francisco sees all year. Daytime highs climb from 57°F (14°C) in March to 63°F (17°C) by May, and rain tapers off after a wet February. Morning fog still rolls through the Sunset and Richmond districts, but afternoons in the Mission, SoMa, and the Embarcadero tend to clear.
Hotel pricing sits in the mid-range during spring, below summer peaks but above the January trough. Moscone Center hosts a heavy conference schedule from March onward, so Union Square and SoMa hotels fill faster than neighborhoods like the Castro or Noe Valley. Book at least three weeks out if your dates overlap with a major tech or medical conference.
Crowds at Fisherman's Wharf and Alcatraz are moderate. Alcatraz ferry tickets, sold through Alcatraz City Cruises, sell out two to three weeks ahead on weekends by April. Cherry blossoms peak in the Japanese Tea Garden in Golden Gate Park around late March, drawing weekend crowds to the park but leaving most of the city uncrowded.
Summer is San Francisco's most expensive and most visited season, but the weather surprises many first-time visitors. June is the foggiest month of the year, a local phenomenon called 'June Gloom' that keeps temperatures in the low 60s°F (around 16°C–17°C) along the coast and in neighborhoods west of Twin Peaks. Inland neighborhoods like the Mission and Potrero Hill run 5°F–8°F (3°C–4°C) warmer on most days.
July and August warm up slightly, with highs reaching 65°F–70°F (18°C–21°C) in sunnier pockets of the city. Hotel demand peaks in July and August, and premium pricing applies across most of the city. The San Francisco Pride Parade, held the last Sunday of June, draws over 100,000 participants and spectators to Market Street, filling hotels in the Castro, Civic Center, and Union Square neighborhoods for the full weekend.
Families with school-age children concentrate their visits in July and August, making Fisherman's Wharf, the Exploratorium at Pier 15, and the California Academy of Sciences in Golden Gate Park noticeably busier. If you visit in summer, book Alcatraz tickets and popular restaurant reservations at least a month out.
September and October are the warmest, sunniest months in San Francisco. The fog retreats, afternoon highs reach 65°F–70°F (18°C–21°C), and the city sees its lowest rainfall of the year. Neighborhoods that stay foggy all summer, including the Outer Sunset and Ocean Beach, finally get consistent sun.
Hotel rates ease from summer highs in September, and October offers some of the best value for the weather you get. Hardly Strictly Bluegrass, a free three-day music festival in Golden Gate Park, takes place in early October and draws large crowds to the park and surrounding neighborhoods, but it does not significantly spike hotel rates citywide.
November marks the start of the rainy season. Temperatures drop to highs around 59°F–63°F (15°C–17°C), and hotel pricing falls further. The city is less crowded than any other month except January and February, making it a good window for travelers who want shorter lines at museums and easier restaurant reservations.
Average winter highs range from 53°F–57°F (12°C–14°C), with overnight lows between 42°F and 48°F (6°C–9°C). Rain falls most frequently from December through February, with January averaging around 4.5 inches of precipitation according to NOAA climate data. Snow is rare at sea level, though Twin Peaks and Mount Davidson occasionally see frost.
December brings holiday foot traffic to Union Square, the Ferry Building, and Pier 39, and hotel rates spike around Christmas and New Year's Eve. Outside those holiday windows, December mid-month and early January offer the lowest hotel rates of the year across most neighborhoods.
February is the cheapest month overall. Crowds are thin, wait times at popular restaurants drop, and you can often walk into the de Young Museum or SFMOMA without advance tickets on a weekday. Pack layers and a waterproof jacket, and you can cover a lot of the city without fighting for space.
| Month | Avg high °F (°C) | Rain | Hotel pricing | Crowd level | Notable event |
|---|---|---|---|---|---|
| January | 57°F (14°C) | High | Lowest of year | Very low | New Year's recovery period |
| February | 59°F (15°C) | High | Lowest of year | Very low | Lunar New Year parade, Chinatown |
| March | 60°F (16°C) | Moderate | Mid-range | Low-moderate | Cherry blossoms, Japanese Tea Garden |
| April | 62°F (17°C) | Low | Mid-range | Moderate | San Francisco International Film Festival |
| May | 63°F (17°C) | Low | Mid-range | Moderate | Bay to Breakers race (third Sunday) |
| June | 65°F (18°C) | Very low | High | High | SF Pride Parade (last Sunday) |
| July | 67°F (19°C) | Minimal | Peak | Very high | Fourth of July fireworks, Pier 39 |
| August | 68°F (20°C) | Minimal | Peak | Very high | Outside Lands music festival, Golden Gate Park |
| September | 68°F (20°C) | Very low | High-moderate | High | Hardly Strictly Bluegrass (early Oct) |
| October | 65°F (18°C) | Low | Mid-range | Moderate | Hardly Strictly Bluegrass, Fleet Week |
| November | 60°F (16°C) | Moderate | Low-mid | Low-moderate | Dia de los Muertos, Mission District |
| December | 57°F (14°C) | High | Mixed (holiday spikes) | Moderate-high holidays | Union Square ice rink, holiday markets |
| If you want | Best time to go |
|---|---|
| Lowest hotel rates | January and February |
| Best weather | September and October |
| Major events | June (Pride) and October (Hardly Strictly Bluegrass, Fleet Week) |
| Festive atmosphere | December (holiday markets, Union Square ice rink) |
| Fewer crowds | Late February |
| Family-friendly conditions | July (school break, full attraction hours) |
| Business travel | March through May (Moscone conference season) |
Traveling in late September, October, or early November puts you in San Francisco during its best weather window while avoiding the peak-summer pricing and crowd density. Hotel rates in neighborhoods like the Mission, Hayes Valley, and Nob Hill run noticeably below July and August levels, and you can often book popular restaurants like Zuni Café or State Bird Provisions with a week's notice rather than a month.
Shoulder season also means shorter lines at the de Young Museum in Golden Gate Park, easier parking at Crissy Field for a morning walk, and ferry rides to Sausalito without the weekend crush. The Marin Headlands are at their most accessible in October, with clear skies and temperatures around 63°F–67°F (17°C–19°C) making the hike to Hawk Hill genuinely comfortable.
For travelers with flexibility, the window from late September through the first week of November hits the best intersection of weather, value, and access across the city.
Visiting during shoulder season, September through November or March through May, spreads tourism spending across the city rather than concentrating it in the July and August peak. Neighborhoods like the Excelsior, Bernal Heights, and the Outer Richmond see more visitor foot traffic during these windows, which supports local businesses that peak-season crowds often bypass in favor of Fisherman's Wharf.
San Francisco's Muni Metro and BART network covers the city and the airport without needing a rental car. The T-Third Street Muni Metro line connects Mission Bay and Caltrain to downtown, and the N-Judah runs from the Inner Sunset to the Embarcadero. Using the SFMTA trip planner to navigate by transit cuts both emissions and the cost of downtown parking, which runs high year-round.
The San Francisco Department of the Environment publishes a zero-waste guide for visitors that covers composting at hotels, refill stations for water bottles, and which neighborhoods have the highest concentration of certified green businesses.
FAQs
September and October give you the warmest, sunniest conditions San Francisco sees all year, with afternoon highs reaching 65°F–68°F (18°C–20°C) and minimal fog. The marine layer that dominates June and July retreats in late summer, leaving most neighborhoods clear by midmorning. If you want warm afternoons and low rain risk, these two months are your target window.
January and February consistently offer the lowest hotel rates of the year, often 30%–40% below summer peaks. Rain is frequent during these months, averaging around 4–5 inches in January according to NOAA data, but crowds are thin and popular attractions are easy to access without advance booking. February is marginally cheaper than January outside of the Lunar New Year weekend, when Chinatown hotels and nearby properties fill up.
July and August are the busiest months, driven by school-break family travel and major events like Outside Lands in Golden Gate Park. Hotel pricing peaks during this window, and Alcatraz ferry tickets sell out weeks in advance. The SF Pride weekend in late June also creates a concentrated surge in the Castro, Civic Center, and Union Square neighborhoods.
December averages highs of 53°F–57°F (12°C–14°C) with overnight lows between 42°F and 48°F (6°C–9°C). Rain is common, and fog returns to coastal neighborhoods. The city does get festive around the holidays, with an ice rink at Union Square and holiday markets at the Ferry Building, but hotel rates spike around Christmas and New Year's Eve before dropping sharply in early January.
Temperatures stay moderate by most standards, with July and August highs averaging 65°F–70°F (18°C–21°C) in sunnier neighborhoods like the Mission and Potrero Hill. Coastal areas including Ocean Beach and the Outer Sunset stay cooler, often 10°F–12°F (6°C–7°C) below inland readings on the same day. June is the foggiest month, and many visitors are surprised to need a jacket in the middle of summer.
SF Pride (last Sunday of June) draws over 100,000 people to Market Street and fills hotels in the Castro and Union Square. Outside Lands (August, Golden Gate Park) brings 200,000+ attendees over three days. Hardly Strictly Bluegrass (early October, Golden Gate Park) is free and draws large crowds without significantly spiking citywide hotel rates. Fleet Week in October fills the waterfront and Fisherman's Wharf. Check the San Francisco Travel Association event calendar before booking.
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