SwellByte

San Mateo / San Francisco / Marin Surf Forecast

Free surf forecast for San Mateo / San Francisco / Marin, United States — 8 surf spots. Wave height, swell, wind, tide and live buoy conditions with a 16-day outlook, no subscription, updated daily on SwellByte.

Best spot in San Mateo / San Francisco / Marin by day

Top-rated of 8 spots each day

Surf spots in San Mateo / San Francisco / Marin

Monthly conditions in San Mateo / San Francisco / Marin

How often each surf size shows up by month, 2020–2024, measured near Mavericks. Bars fill from the bottom by the share of days reaching each surf size; white at the top is smaller days. The percentage is the chance of a surfable day.

2–4ft4–6ft6–8ft8–12ft12ft+
Jan
100%
Feb
100%
Mar
99%
Apr
99%
May
100%
Jun
99%
Jul
90%
Aug
88%
Sep
96%
Oct
98%
Nov
99%
Dec
95%
Swell period
14s
13s
12s
11s
10s
9s
8s
8s
10s
13s
13s
14s
Water temp
55°F
55°F
54°F
53°F
54°F
55°F
57°F
58°F
60°F
59°F
56°F
55°F