San Mateo surf forecast from 22 Aug 2026:
- Best quality surf: Sunday 23 Aug, 4AM (local time) - 1.5ft (0.4m), 19s period, SW swell with cross-offshore winds.
- Most powerful swell: Saturday 29 Aug, 1AM (local time) - 5ft (1.6m), 16s period, SW swell with 1,330 kJ wave energy.
- Next surfable swell (1★+): Sunday 23 Aug, 4AM (local time) - 1.5ft (0.4m), 19s period with SW swell.
Best Forecast Surf Conditions for San Mateo this week:
The surf forecast for San Mateo over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Aug 23) at 4AM. The primary swell is predicted to be 0.4m and 19s period with a secondary swell of 0.4m and 13s. Another secondary swell of 0.7m and 5s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at San Mateo in the next 16 days are 1.6m 16s and forecast to arrive on Saturday (Aug 29) at 1AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 6s period and expected on Wednesday (Aug 26) at 7PM.
| Wave Type | Time (-05) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Sun 23rd Aug) | 1.5ft (0.4m) 19s |
| Best Surf | 4AM (Sun 23rd Aug) | 1.5ft (0.4m) 19s |
| Most Powerful | 1AM (Sat 29th Aug) | 5ft (1.6m) 16s |
Table - best surf conditions forecast for San Mateo over the next 16 days.
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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