SF in July: 22°C afternoons, 13°C mornings, 0 rain days — but Pacific wind makes 22°C feel 60°F.
July in San Francisco is 'Fogust' — the month when the marine layer peaks and tourists in shorts shivering on Fisherman's Wharf becomes a local meme. NOAA climate data show daily highs of just 22°C (71°F) and lows of 13°C (56°F), with zero rain days but near-constant fog in western neighborhoods through morning and often late afternoon. The Pacific wind makes even 22°C feel 60°F. A classic local scene: Mission burrito lunch at 78°F, 30 minutes later Ocean Beach feels 58°F with 20mph wind. Pack exactly what you'd pack for SF May and June — the season doesn't change much here. A trench, a cashmere cardigan, a merino base, jeans, sneakers. The absurdity of 'July in California' as a cold-weather packing list is exactly why tourists get caught out. Locals find it funny.
Mission burrito lunch at 78°F, 30 minutes later Ocean Beach feels 58°F with 20mph wind. Locals find the absurdity funny.

Still the outer. SF July is not materially warmer than SF May. A classic trench reads right citywide; a lightweight parka (Arc'teryx, Patagonia) handles wind better for Presidio hikes.

You will wear this almost every day. Cream, charcoal, or navy. Layered under the trench, alone in the Mission, over a tee at Dolores Park.

Base-layer rotation. Long-sleeve for most days; short-sleeve for the rare Mission afternoon that tips above 75°F.

Jeans dominate. A midi skirt with tights handles a warm afternoon or a dinner reservation — but you'll wear jeans most days.

For the occasional warm day, and only with a cardigan and trench stashed in your bag for the inevitable fog roll-in.

Same as May/June. SF hills don't care what month it is.

Same as June. Backpacks are more acceptable here than most American cities.
Long-sleeve merino · jeans · cashmere cardigan · trench · Hokas · backpack. Coffee at Four Barrel, Presidio walk.
Short-sleeve tee · jeans · cardigan · ankle boots · small bag. Dinner at Rich Table, drinks at ABV.
Per NOAA climate data: average daily high is 22°C (71°F), low is 13°C (56°F). Zero rain days but near-constant fog in western neighborhoods (Sunset, Richmond, Ocean Beach) through morning and often late afternoon. Locals call this 'Fogust' (and it extends into August). Eastern neighborhoods (Mission, Potrero) get some afternoon sun but still cool to fog by evening.
No — July is actually one of the coldest 'summer' months in SF due to peak marine-layer fog. Average afternoon high of 22°C (71°F) is cool by US summer standards, and the wind chill plus fog often makes it feel 55-60°F. Pack as if for spring, not summer.
Essentially the same as May or June: trench coat, cashmere cardigan, merino tees (long-sleeve primary, one short-sleeve), dark jeans, midi skirt option, supportive sneakers, ankle boots, beanie or cap, silk scarf, compact bag. Skip shorts (except one pair for a rare warm Mission afternoon), sandals (except one pair for indoor Mission dinners), and anything you'd wear to a Miami beach.
Yes, more than in May. Peak fog means the temperature swing between a sunny Mission moment and a foggy Outer Sunset afternoon is as much as 10-15°F. Three layers (base/mid/outer) is the only system that works.
'Fogust' is the local nickname for late-July and August in SF — peak marine layer, densest fog, coldest 'summer' feel. The name plays on fog + August, but July functions similarly. Locals use the term to warn tourists away from unrealistic California summer expectations.