Surf Forecasts:
Stinson Beach surf forecast from 18 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 8AM (local time) - 2.5ft (0.7m), 14s period, SW swell with glassy winds.
- Most powerful swell: Thursday 20 Aug, 2AM (local time) - 5.5ft (1.7m), 7s period, WNW swell with 310 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 8AM (local time) - 2.5ft (0.7m), 14s period with SW swell.
Best Forecast Surf Conditions for Stinson Beach this week:
The surf forecast for Stinson Beach over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 19) at 8AM. The primary swell is predicted to be 0.7m and 14s period with a secondary swell of 1.2m and 7s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Stinson Beach in the next 16 days are 1.7m 7s and forecast to arrive on Thursday (Aug 20) at 2AM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Wed 19th Aug) | 2.5ft (0.7m) 14s |
| Best Surf | 8AM (Wed 19th Aug) | 2.5ft (0.7m) 14s |
| Most Powerful | 2AM (Thu 20th Aug) | 5.5ft (1.7m) 7s |
Table - best surf conditions forecast for Stinson Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what Stinson Beach has cookin’ for the next couple of weeks. Gotta be straight with you – the outlook is pretty grim for most of this run. The water is sitting at 62°F, which is about 4°F warmer than usual for this time of year. That’s a real oddball, feels more like a late summer bathtub than the usual chilly Pacific.
We’re looking at a long, frustrating stretch here. From today, Monday the 17th, right through to the morning of Monday the 31st of August, there’s just nothing worth paddling out for. That’s nearly two weeks of poor surf conditions. Winds are mostly cross-onshore and choppy, and when they do go offshore, the swell is tiny. The break is fairly consistent, but the quality just isn't there. Even the morning of Sunday the 30th of August has clean-ish conditions with very light winds (swell energy at 714), but the 3ft SW groundswell with a super long 16-second period means it’ll be pretty straight and flat at a beach break like this – better for a point, not so much here.
After that long dry spell, there's finally something to talk about. On Monday morning, the 31st of August, we get a bump. Swell climbs to 7ft from the WNW with an 8-second period. The combined energy is pumping hard (1055). But here’s the catch – that’s big enough to be expert-only territory. The wind is light from the south, so it’ll be cross-on, but not too messy. If you're a strong paddler who loves a challenge, this morning window is the only real standout in the whole 16-day window. But it’s still over a week away, so keep an eye on it – long-range calls like this are promising but not locked in.
For the rest of the run after that? Tuesday the 1st of September drops back to 5ft (WNW) with light onshores, and the energy fades to 428–452. Not worth the drive.
Honestly, if you’re not keen on that last Monday, this is a kite-surfing stretch more than a stand-up paddle session. The cross-on winds and moderate wave energy will keep the kites happy. For surfers, it's a waiting game.
Rusty.
Short Range ForecastMostly dry. Very mild (max 18°C on Wed afternoon, min 12°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 18°C on Thu afternoon, min 13°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Mon 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | ||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | SW 15 | SW 14 | SW 15 | SW 16 | WNW 7 | SW 15 | SW 15 | WNW 7 | SSW 14 | SSW 14 | WNW 7 | WNW 7 | WNW 6 | WNW 6 | WNW 7 | WNW 8 | WNW 8 | WNW 8 | WNW 9 | WNW 9 |
Wave Graph  | ||||||||||||||||||||
 kJ | 255 | 169 | 220 | 208 | 149 | 217 | 223 | 310 | 134 | 150 | 243 | 192 | 181 | 155 | 81 | 122 | 149 | 160 | 151 | 113 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 3:36PM1.24m | 4:24AM0.89m | 4:13PM1.22m | 5:53AM0.82m | 4:57PM1.19m | 7:43AM0.81m | 5:49PM1.18m | 9:11AM0.86m | 6:48PM1.17m | 10:06AM0.91m | 7:48PM1.19m | 10:45AM0.95m | 8:43PM1.22m | |||||||
Low Tide | 10:49PM0.21m | 10:24AM0.41m | 11:52PM0.19m | 11:15AM0.52m | 1:00AM0.17m | 12:22PM0.60m | 2:08AM0.14m | 1:41PM0.64m | 3:09AM0.10m | 2:51PM0.64m | 4:01AM0.06m | 3:46PM0.61m | 4:44AM0.03m | |||||||
 |  | | | |  | | | | | | | |  | | | | | | | |
 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — | 6:31 | — | — |
 | 8:00 | — | — | 8:00 | — | — | 7:58 | — | — | 7:57 | — | — | 7:55 | — | — | 7:53 | — | — | 7:52 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 13 | 15 | 17 | 13 | 17 | 18 | 13 | 17 | 18 | 14 | 16 | 18 | 14 | 18 | 18 | 14 | 17 | 18 | 14 |
Feels °C | 15 | 11 | 14 | 15 | 10 | 17 | 17 | 10 | 16 | 16 | 11 | 14 | 15 | 11 | 17 | 17 | 11 | 16 | 16 | 12 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 14 | WNW 8 | SW 16 | WNW 7 | WNW 8 | SW 15 | SW 15 | W 12 | W 12 | SSW 14 | SW 14 | WNW 10 | SSW 13 | WNW 7 | SW 17 | WNW 8 | WNW 8 | WNW 9 | WNW 9 |
| kJ | 255 | 169 | 113 | 208 | 148 | 161 | 223 | 183 | 134 | 132 | 138 | 93 | 37 | 68 | 81 | 102 | 149 | 160 | 151 | 108 |
Swell 2 Height (m) Direction Period (s) | WNW 9 | WNW 6 | SW 15 | SSW 13 | SW 14 | SW 15 | W 12 | W 11 | SSW 14 | SSW 14 | W 11 | W 11 | SSW 13 | WNW 10 | WNW 8 | SW 13 | SW 12 | SW 19 | SW 18 | SSW 15 |
| kJ | 26 | 30 | 220 | 66 | 149 | 217 | 74 | 93 | 129 | 136 | 62 | 61 | 68 | 35 | 24 | 43 | 38 | 130 | 114 | 86 |
Swell 3 Height (m) Direction Period (s) | S 9 | WNW 9 | SW 9 | W 16 | SW 17 | W 13 | SW 21 | — | WSW 19 | SW 19 | SW 20 | SW 18 | SW 18 | SW 18 | SW 13 | W 12 | SW 19 | SSW 16 | SSW 16 | SW 18 |
| kJ | 7 | 26 | 3 | 19 | 77 | 82 | 18 | — | 37 | 14 | 15 | 51 | 49 | 48 | 44 | 12 | 55 | 50 | 50 | 113 |
Wind waves Height (m) Direction Period (s) | WNW 7 | — | — | WNW 8 | — | — | WNW 8 | WNW 7 | WNW 7 | WNW 6 | WNW 7 | WNW 7 | WNW 6 | WNW 6 | — | WNW 8 | — | — | — | — |
| kJ | 25 | — | — | 113 | — | — | 170 | 310 | 113 | 150 | 243 | 192 | 181 | 155 | — | 122 | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 120 | 4 | 4 | 119 | 18 | 18 | 119 | 18 | 4 | 118 | 18 | 18 | 118 | 4 | 29 | 119 | 5 | 18 | 119 | 18 |
Best forecast wave conditions in Marin County | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
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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 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 16 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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