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Stinson Beach Surf Forecast
/ CAL – Marin County (14 breaks) / California (404 breaks) /
Stinson Beach surfForecast / CAL – Marin County / USA
12 Day Weather and Surf, issued 10 am Monday 18 Aug 2025 PDT
Best Forecast Surf Conditions for Stinson Beach this week:
The surf forecast for Stinson Beach over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 20) at 8AM. The primary swell is predicted to be 0.6m and 16s period with a secondary swell of 1.1m and 6s. Another secondary swell of 1.4m and 7s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Stinson Beach in the next 12 days are 2.1m 8s and forecast to arrive on Thursday (Aug 21) at 5AM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Wed 20th Aug) | 4.5ft (1.4m) 7s |
| Best Surf | 8AM (Thu 21st Aug) | 7ft (2.1m) 8s |
| Most Powerful | 5AM (Thu 21st Aug) | 7ft (2.1m) 8s |
Table - best surf conditions forecast for Stinson Beach over the next 12 days.
Short Range Forecast Mostly dry. Very mild (max 19°C on Wed afternoon, min 12°C on Mon night). Wind will be generally light. | Days 3-6 Weather Summary Mostly dry. Very mild (max 19°C on Thu afternoon, min 12°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 18 | Tuesday 19 | Wednesday 20 | Thursday 21 | Friday 22 | Saturday 23 | Sunday 24 | |||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | |||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||
| Period(s) (?) | 10 | 17 | 16 | 16 | 16 | 16 | 15 | 15 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 8 | 8 | 8 | 8 |
Wave (?)Graph  | |||||||||||||||||||||
| Energy (?) | 307 | 338 | 303 | 262 | 395 | 375 | 308 | 307 | 548 | 911 | 447 | 506 | 454 | 465 | 537 | 514 | 470 | 472 | 485 | 363 | 552 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross | cross- on | cross- on | cross- on | glass | cross- on | cross | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | on | cross- on | on | on | cross- on | on |
High Tide / height (m) | 9:40AM 0.94 | 7:49PM 1.37 | 10:34AM 1.01 | 8:52PM 1.38 | 11:17AM 1.06 | 9:50PM 1.40 | 11:56AM 1.10 | 10:42PM 1.39 | 12:30PM 1.13 | 11:29PM 1.36 | 1:02PM 1.15 | 12:14AM 1.30 | 1:30PM 1.16 | 12:57AM 1.22 | |||||||
Low Tide / height (m) | 2:24PM 0.61 | 3:59AM -0.09 | 3:34PM 0.59 | 4:52AM -0.12 | 4:33PM 0.54 | 5:37AM -0.12 | 5:25PM 0.48 | 6:17AM -0.10 | 6:12PM 0.43 | 6:53AM -0.06 | 6:56PM 0.37 | 7:26AM 0.01 | 7:38PM 0.33 | ||||||||
Monday 18 | Tuesday 19 | Wednesday 20 | Thursday 21 | Friday 22 | Saturday 23 | Sunday 24 | |||||||||||||||
| Sunrise | 6:28 | - | - | 6:28 | - | - | 6:28 | - | - | 6:30 | - | - | 6:31 | - | - | 6:31 | - | - | 6:33 | - | - |
| Sunset | - | 8:00 | - | - | 7:58 | - | - | 7:57 | - | - | 7:55 | - | - | 7:53 | - | - | 7:52 | - | - | 7:52 | - |
 | |  | | | | | | | | |  |  | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 17 | 18 | 15 | 16 | 17 | 14 | 18 | 19 | 15 | 18 | 19 | 13 | 17 | 17 | 13 | 16 | 17 | 13 | 16 | 17 | 12 |
| Feels °C (?) | 14 | 14 | 12 | 15 | 15 | 10 | 17 | 16 | 11 | 17 | 17 | 10 | 16 | 15 | 10 | 15 | 15 | 11 | 15 | 15 | 10 |
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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 - Marin County
Continuing clean conditions at Stinson Beach (calm at Fairfax wx 9 km from Stinson Beach). 1.0m 12s groundswell from the WSW with a 0.6m 7s swell from the WNW and a 0.4m 15s groundswell from the SW as well as a 0.3m 17s long period groundswell, also from the SW. 4 swells combining so expect closeout sets.
Actual: 58 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 Stinson Beach 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.
Information about the Stinson Beach Surf forecast
The above surf forecast table for Stinson Beach provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Stinson Beach can be found by selecting the local surf guide option on the grey menu. Our Stinson Beach surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Stinson Beach) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Stinson Beach may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Stinson Beach is 10 km (6 miles) from the city of Corte Madera. If you plan a vacation in Marin County, look for hotels and other accommodation in Corte Madera. Corte Madera has rooms for a wide range of budgets as well as car hire and transport links.
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