September in San Francisco, CA: peak season for golf — great conditions and a wide playing window. Best tee times: mid-morning through early afternoon.
| Average September Weather | |
|---|---|
| Avg daily high | 70°F |
| Avg daily low | 58°F |
| Rainy days | 2 / mo |
| Avg peak wind | 15.9 mph |
September is San Francisco's warmest month of the year, with average highs reaching 70°F — a fact that surprises many visitors who assume summer fog defines the city's golf calendar. For the traveling golfer who has been waiting for the right window, this is it: the warmest temperatures, only 2 precipitation days (second-driest of the year), and winds that, while still topping out near 15.9 mph, are slightly calmer than August. Plan your tee time for mid-morning and you'll catch the best of it.
For the local regular, September is familiar but quietly special. The coastal fog that dominated June and July has largely retreated, afternoon rounds stay comfortable, and the courses are in firm, fast condition from a dry summer. The one honest caveat is wind — 15.9 mph peak gusts are enough to reshape club selection on exposed holes at Harding Park or Sharp Park, so locals who've played through the breezy season will have a clear edge over first-time visitors.
September demand at public tracks like Harding Park runs high precisely because locals and visitors both recognize the warm window — book tee times at least a week out for weekend slots, and favor morning rounds before afternoon sea breezes build. See how conditions rate hour by hour on our playability scale.
August is marginally windier at 16.7 mph and slightly cooler at 68°F, but with only 1 precipitation day it's the driest month in the city's calendar — September adds one more rainy day while gaining 2°F of warmth, making it the better all-around window for most golfers. October steps back noticeably: temperatures dip to a 69°F high, precipitation doubles to 4 days, and peak winds ease to 14 mph, signaling the start of San Francisco's wet season.
Climate normals show the long-term picture, but day-to-day weather varies. Check today's live golf weather score for San Francisco, CA for the current playability rating, hourly wind, temperature, and the recommended tee time window.
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September is actually the warmest month of the year in San Francisco, with average highs of 70°F, and the marine fog layer that characterizes June and July has usually retreated by this point. Morning mist can still occur near the coast, but it typically burns off before mid-morning tee times. If fog is a concern, booking an 8 or 9 AM slot rather than first light is a reasonable hedge.
Peak winds reach 15.9 mph in September, making it the 6th-windiest month of the year — noticeable but slightly calmer than August's 16.7 mph. Exposed courses like Sharp Park and the Lake Course at Harding Park feel the breeze most on afternoon rounds. Factoring one extra club on windward holes is standard practice for anyone playing the city's oceanside layouts this time of year.