Plain answers to the questions that actually come up. Where a detail depends on the park, it's marked on that park's own page — don't trust one answer for all 25.
San Francisco city dog parks are free and open to the public during park hours. The big bayfront and open-space areas (Fort Funston, Crissy Field, Ocean Beach) are run by the National Park Service / Presidio Trust within Golden Gate National Recreation Area and are free to enter with their own posted rules — including designated off-leash areas at Fort Funston and Crissy Field. Check the park page (and its posted sign) before you head out; nobody likes finding out at the gate.
San Francisco Parks & Recreation posts a sign at each city park measuring recent conditions. Green = open and fine, Yellow = open but use care, Red = closed (usually weather, mud, or maintenance). The status shown on each San Francisco city park page here reflects the same idea, crowd-reported and then approved by a moderator before it shows up.
Inside the designated off-leash area, no — that's the point. But you're on-leash the moment you step outside the dog area and everywhere else in the park, including the parking lot and the trail to the gate. The leash law is how parks stay open; take it seriously.
No. The small neighborhood pocket parks are fenced, but the big open spaces (Fort Funston's beach, Crissy Field's fields) are unfenced. Each park page says fenced / part/not fenced right up top. If your recall isn't rock-solid, pick a fenced one.
No — only some have fountains, and fountain/washing stations are shut off in the colder months. Each park page marks whether water is available. When in doubt, bring your own and a bowl; beach and hilly runs leave dogs thirsty fast.
City parks generally close at a posted hour, and only a few dog areas are lit. Park page says lit / not lit. After dark in an unlit park, you're stumbling by phone flashlight — stick to the lit ones after sunset.
Quick rule: above ~82°F keep the trip short; above ~90°F skip it or go at dawn/dusk. Hot asphalt and sun-baked sand can burn paws in seconds. The weather card on each park page flags hot-asphalt and cold-paw conditions during the warm and cold months.
SF winters don't bring snow — they bring rain, wind and wet, slippery mud. The true paw danger is the cold-and-wet combo: rain-soaked paws chap and crack, and grit from wet trails works into pads. Paw boots or a wax balm, plus a towel-and-rinse after the walk, cover most of it. See the pack list for the honest winter kit.
San Francisco city parks require current dog licensing — the same tag rule applies at dog parks. It's cheap and it's how the city finds you if something goes sideways. Check your city's rules if you're at a metro park outside San Francisco.
The ♥ vote on each park page feeds the Most Loved leaderboard (live, counted in real time). The status reports are crowd-submitted, but a human moderator approves each one before it's shown — the same gate as dog profiles, so junk and spam never post. Ratings are bones (not stars), by design.
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