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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 4 pm Thursday 18 Sep 2025 PDT
How big are the waves at Princeton Breakwater today?
The current surf forecast for Princeton Breakwater at 5PM is: 1.7m 10s primary swell from a West-northwest direction and 0.6m 14s secondary swell from a South-southwest direction (forecast issued at 04:00pm September 18). The wind direction is predicted to be cross-onshore.
| Time (PDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Sep) | - | - |
| Afternoon (18 Sep) | 5.5ft (1.7m) | 10s |
| Evening (18 Sep) | 5ft (1.5m) | 10s |
Table - waves today at Princeton Breakwater. (Swell directed towards the surf break)
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | |||||||||||||||||||||
| 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 | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 14 | 14 | 10 | 10 | 10 | 9 | 9 | 9 | 13 | 10 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 637 | 596 | 473 | 396 | 404 | 352 | 310 | 316 | 241 | 232 | 186 | 151 | 145 | 123 | 121 | 109 | 109 | 103 | 98 | 98 | 100 | 87 | 84 | 246 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- on | cross- on | glass | glass | glass | on | on | cross- on | cross- on | cross- on | glass | cross | cross | cross | cross- on | cross | cross | cross | glass | cross- on | cross | cross- on |
High Tide / height (m) | 8:51PM 1.73 | 10:19AM 1.57 | 9:42PM 1.70 | 10:49AM 1.60 | 10:29PM 1.65 | |||||||||||||||||||
Low Tide / height (m) | 3:06PM 0.70 | 3:42AM 0.00 | 3:52PM 0.57 | 4:18AM 0.08 | 4:33PM 0.45 | 4:50AM 0.18 | ||||||||||||||||||
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 6:54 | - | - | - | - | - | - | - | 6:54 | - | - | - | - | - | - | - | 6:56 | - |
| Sunset | - | 7:13 | - | - | - | - | - | - | - | 7:10 | - | - | - | - | - | - | - | 7:09 | - | - | - | - | - | - |
 | |  |  | | |  |  | | |  | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 18 | 16 | 15 | 15 | 15 | 15 | 16 | 18 | 18 | 18 | 16 | 16 | 16 | 16 | 16 | 19 | 19 | 17 | 16 | 15 | 15 | 15 | 15 | 17 |
| Feels °C (?) | 17 | 15 | 15 | 15 | 16 | 16 | 17 | 18 | 17 | 18 | 16 | 16 | 17 | 16 | 16 | 18 | 18 | 15 | 15 | 15 | 15 | 15 | 15 | 16 |
- Map Icons:
Break
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
Still cross-shore at Princeton Breakwater (light winds from the WNW at Half Moon Bay Airport (California) 3 km from Princeton Breakwater). 2.0m 10s swell from the WNW with a 0.6m 14s groundswell from the SSW. 2 swells combining to make bigger set waves.
1 h 35 min ago
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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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