What to Wear in San Francisco in August 2026
SF in August IS 'Fogust': 22°C afternoons, 14°C mornings, peak marine-layer — the coldest 'summer' month in the US.
- Pack as if for SF spring — the season doesn't change from May or June
- Classic trench or lightweight parka as the outer
- Cashmere cardigan worn daily, year-round piece
- Merino long-sleeve + one short-sleeve tee, jeans primary
- Hokas, NB, or Sambas — hills don't care what month it is
- Optional thin gloves for late-August Ocean Beach evenings (14°C + 20mph wind feels like 45°F)
- Pack 'August in California' summer wear — fog defines the month, not sun
- Wait for an 'SF summer day' that doesn't arrive — the season doesn't shift
- Pay boutique prices for emergency fleeces — Uniqlo Union Square is the local supply chain
August is 'Fogust' in San Francisco — the namesake month of SF's coldest-summer-in-the-US reputation. NOAA climate data show afternoons at 22°C (72°F), mornings at 14°C, barely 1 rain day all month, but near-daily fog. The Pacific wind pushes marine layer over the western half of the city most mornings and often into late afternoon; Mission and Potrero may warm to 25°C while Ocean Beach stays at 14°C and 20mph wind. Pack as if for SF spring — the season doesn't meaningfully change from May or June. A trench, a cashmere cardigan, merino tees, jeans, sneakers. The absurdity of 'August in California' as a cold-weather packing list is exactly why tourists get caught out. Locals find it funny and sell a lot of fleeces to unprepared visitors at Stonestown Uniqlo and the Embarcadero tourist stalls.
The absurdity of 'August in California' as a cold-weather packing list is exactly why tourists get caught out. Locals find it funny and sell a lot of fleeces at Stonestown Uniqlo.
The capsule
01Classic trench or lightweight parkaStill the outer. SF August is not materially warmer than SF June. Burberry-style trench for style-first; Arc'teryx or Patagonia for wind-first. Both read local.
02Cashmere cardigan (year-round SF piece)You will wear this daily. Cream, charcoal, or navy. Under the trench, alone in the Mission, over a tee at Dolores Park.
- 03Merino long-sleeve + one short-sleeve tee
Long-sleeve primary; short-sleeve for rare Mission afternoons above 75°F. Merino breathes + insulates simultaneously.
04Straight-leg jeans (primary) + one skirt optionJeans dominate. A midi skirt with tights for warm afternoons, but you'll wear jeans most days.
05Supportive sneakers (Hoka, NB, Samba)SF hills are real. Hokas for tech-trail aesthetic; Sambas for casual-polished; New Balance 574 for Mission local.
06Leather backpack or commuter bagSF tech culture makes backpacks acceptable. Everlane, Cuyana, Mission Workshop — all read local.
- Beanie + silk scarf + windbreaker — Fog-morning beanie; wind-afternoon silk scarf; wind-blocking windbreaker for the Embarcadero or Presidio. All three live in your bag year-round.
- Gloves for late-August evenings (optional) — Ocean Beach sunsets in late August at 14°C with 20mph wind feel like 45°F. Locals keep thin gloves in the bag; visitors rarely do but should.
Day to night
Long-sleeve merino · jeans · cashmere cardigan · trench · Hokas · backpack. Coffee at Sightglass, walk the Embarcadero, visit Ferry Building.
Short-sleeve tee · jeans · cardigan · ankle boots · small bag. Dinner at Rich Table, drinks at Trick Dog.
What to avoid
- Packing 'California in August' as uniformly warm — SF is the continental US exception
- Sandals as primary footwear
- Shorts for full days
- Lightweight athletic wear as a layer — doesn't block wind
- Waiting for an 'SF summer day' — the season doesn't shift
- Expensive boutique stores for emergency fleeces — Uniqlo Union Square is the local supply chain
Frequently asked questions
Per NOAA climate data: average daily high is 22°C (71°F), low is 14°C (57°F). Barely 1 rain day per month but near-constant fog in western neighborhoods. Locals call this 'Fogust' — the peak of the marine-layer pattern that defines SF summer. Eastern neighborhoods (Mission, Potrero) get some afternoon sun; waterfront (Ocean Beach, Richmond, Sunset) stay foggy and windy.
Among major US cities, yes — in a practical sense. SF August averages 22°C (71°F), compared to NYC August at 29°C (85°F) or Miami August at 35°C (95°F). The misattributed Mark Twain quote — 'the coldest winter I ever spent was a summer in San Francisco' — persists because it feels true on foggy Fogust afternoons.
Cold Pacific upwelling cools air offshore; the temperature differential with inland California Central Valley heat pulls the cold air + fog through the Golden Gate and over the peninsula. Peak contrast happens July-August, which is why fog peaks in 'Fogust.' The pattern usually eases by late September when inland Valley cools.
Not winter — but spring-level layers. A trench coat, cashmere cardigan, merino long-sleeve tees, jeans, and supportive sneakers covers 95% of August SF needs. Add a beanie for foggy mornings, a silk scarf for wind, and optional thin gloves for late-August evenings at Ocean Beach. Skip sundresses, shorts, and sandals as primary pieces.
Layered neutrals, supportive footwear, function-first outerwear. Typical August uniform: merino tee, cashmere cardigan or hoodie, jeans or wide-leg trousers, Hokas or NB sneakers or Sambas, denim jacket or trench, backpack or crossbody. SF dresses less trendy than LA and less formal than NYC — practical-intentional is the aesthetic.