Will I be cold?
Will I be cold in San Francisco in August?
Verdict
No — No, comfortable.
Lows stay near 56°F — you won't be reaching for the puffer.
Day vs. night
Day
68°F
Comfortable
A T-shirt and a light overshirt is enough.
Night
56°F
Cool
You'll want a warm layer after sunset — not a heavy coat.
Why
San Francisco in August averages highs of 68°F, lows of 56°F, 1 rainy days.
You can pack for the daytime temps and not worry about the evening dip.