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Princeton Breakwater Surf Forecast
/ CAL – San Mateo (15 breaks) / California (404 breaks) /
Surf Forecasts:
Princeton Breakwater surfForecast / CAL – San Mateo / USA
48hr Weather and Surf, issued 10 pm Wednesday 17 Sep 2025 PDT
How big are the waves at Princeton Breakwater today?
The current surf forecast for Princeton Breakwater at 12AM is: 1.3m 8s primary swell from a West-northwest direction and 0.6m 15s secondary swell from a South-southwest direction (forecast issued at 10:00pm September 17). The wind direction is predicted to be cross-onshore.
| Time (PDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Sep) | - | - |
| Afternoon (18 Sep) | - | - |
| Evening (18 Sep) | 3.5ft (1.0m) | 10s |
Table - waves today at Princeton Breakwater. (Swell directed towards the surf break)
Wed 17 | Thursday 18 | Friday 19 | Saturday 20 | |||||||||||||||||||||
| 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 10 | 8 | 8 | 8 | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 14 | 14 | 10 | 10 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 179 | 161 | 243 | 299 | 377 | 561 | 650 | 607 | 554 | 478 | 419 | 365 | 372 | 322 | 291 | 232 | 186 | 183 | 148 | 123 | 121 | 109 | 109 | 103 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- on | on | on | on | on | on | on | on | on | cross- on | cross- on | cross- on | on | on | on | glass | glass | glass | glass | glass | cross- on | cross- on | cross- on |
High Tide / height (m) | 7:53PM 1.73 | 9:46AM 1.52 | 8:51PM 1.73 | 10:19AM 1.57 | 9:42PM 1.70 | 10:49AM 1.60 | ||||||||||||||||||
Low Tide / height (m) | 3:01AM -0.04 | 3:06PM 0.70 | 3:42AM 0.00 | 3:52PM 0.57 | 4:18AM 0.08 | 4:33PM 0.45 | ||||||||||||||||||
Wed 17 | Thursday 18 | Friday 19 | Saturday 20 | |||||||||||||||||||||
| Sunrise | - | - | - | - | 6:54 | - | - | - | - | - | - | - | 6:54 | - | - | - | - | - | - | - | 6:54 | - | - | - |
| Sunset | - | - | - | - | - | - | - | 7:13 | - | - | - | - | - | - | - | 7:10 | - | - | - | - | - | - | - | 7:09 |
 | |  | |  |  | | | | | | | |  | | |  | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 16 | 15 | 15 | 15 | 15 | 17 | 17 | 16 | 15 | 15 | 15 | 15 | 15 | 16 | 17 | 17 | 16 | 15 | 15 | 15 | 15 | 18 | 18 | 17 |
| Feels °C (?) | 15 | 15 | 15 | 15 | 15 | 17 | 16 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 15 | 15 | 16 | 15 | 17 | 16 | 15 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for CAL - San Mateo
Continuing clean conditions at Princeton Breakwater (calm at Half Moon Bay Airport (California) 3 km from Princeton Breakwater). 1.1m 7s swell from the WNW with a 0.5m 15s groundswell from the SSW and a 0.5m 10s swell from the WNW. 3 swells combining to make bigger set waves.
1 h 15 min ago
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Princeton Breakwater surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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