Surf Forecasts:
Stinson Beach surf forecast from 20 Aug 2026:
- Best quality surf: Sunday 23 Aug, 8AM (local time) - 3.5ft (1.1m), 7s period, WNW swell with glassy winds.
- Most powerful swell: Wednesday 26 Aug, 11PM (local time) - 7ft (2.2m), 8s period, WNW swell with 620 kJ wave energy.
- Next surfable swell (1★+): Sunday 23 Aug, 5AM (local time) - 3.5ft (1.1m), 7s period with WNW 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 Sunday (Aug 23) at 5AM. The primary swell is predicted to be 1.1m and 7s period with a secondary swell of 0.4m and 15s. 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 2.2m 8s and forecast to arrive on Wednesday (Aug 26) at 11PM. 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+) | 5AM (Sun 23rd Aug) | 3.5ft (1.1m) 7s |
| Best Surf | 8AM (Sun 23rd Aug) | 3.5ft (1.1m) 7s |
| Most Powerful | 11PM (Wed 26th Aug) | 7ft (2.2m) 8s |
Table - best surf conditions forecast for Stinson Beach over the next 16 days.
The Lowdown
Alright, this is Rusty, and I'm looking at the next couple of weeks for us. I gotta be straight with you – it's a tough stretch. The forecast is pretty bleak for most of the period. We're looking at a long run of days where the conditions just aren't coming together, so you'll want to be patient.
The first sniff of anything worth paddling out for is a long way off, on the 28th of August. Even then, it's marginal. The water is sitting at 62° at Stinson Beach, which is a solid 5° warmer than usual for this time of year – feels like a warm bath.
The real standout, the only thing that's got my heart beating a little faster, is the Thursday morning of the 3rd of September. We've got a tiny 2ft swell coming from the SW, but the period is a very long 15 seconds. That's real groundswell energy, and it's not huge, so it won't just close out. The real kicker though is the wind. It's glassy. Dead flat, offshore from the SW. For a spot like Stinson Beach, that's a rare treat. The combined energy is weak (168), but for a small wave session on a clean, glassy morning, that's our best bet. Get on it early.
Before that, there's a whole lot of nothing. The 31st of August morning shows a bit more size, 6ft, but it's a short-period 8-second WNW windswell and the wind is cross-shore. That's messy. The energy is moderate (585), but the quality won't be there. For the rest of the time, we're looking at cross-onshore winds, choppy surfaces, and small, weak swell. It's a write-off for a good week or more.
So, to sum it up: wait for the glassy morning on the 3rd of September. That's your one real chance for a clean, soulful session. Everything else is either too small, too windy, or too messy. It's a tough run, but that one morning might just be worth the wait.
Rusty
Short Range ForecastMostly dry. Very mild (max 18°C on Sat afternoon, min 12°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 18°C on Sun morning, min 13°C on Sat night). Wind will be generally light. | ||||||||||||||||||
Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | ||||||||||||||
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 | SSW 14 | SSW 14 | SW 14 | SW 14 | W 10 | SW 13 | SW 17 | WNW 6 | WNW 6 | WNW 8 | WNW 8 | WNW 8 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 |
Wave Graph  | |||||||||||||||||||
 kJ | 183 | 129 | 136 | 167 | 93 | 78 | 85 | 77 | 97 | 130 | 138 | 149 | 128 | 157 | 118 | 145 | 171 | 130 | 124 |
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 | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | on | on | on | cross-on |
High Tide | 7:43AM0.81m | 5:49PM1.18m | 9:11AM0.86m | 6:48PM1.17m | 10:06AM0.91m | 7:48PM1.19m | 10:45AM0.95m | 8:43PM1.22m | 11:16AM0.98m | 9:32PM1.26m | 11:42AM1.01m | 10:16PM1.29m | |||||||
Low Tide | 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 | 4:32PM0.58m | 5:20AM0.00m | 5:11PM0.53m | |||||||
 |  | | | | |  |  | | | | | | | | | | | | |
 | — | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — | 6:31 | — | — | 6:33 | — | — | 6:33 | — | — |
 | — | — | 7:57 | — | — | 7:55 | — | — | 7:53 | — | — | 7:52 | — | — | 7:52 | — | — | 7:50 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 15 | 15 | 14 | 15 | 16 | 13 | 16 | 18 | 15 | 18 | 18 | 14 | 16 | 17 | 14 | 16 | 17 | 14 |
Feels °C | 11 | 13 | 13 | 11 | 13 | 13 | 10 | 14 | 15 | 11 | 18 | 17 | 13 | 15 | 15 | 13 | 15 | 15 | 13 |
Swell 1 Height (m) Direction Period (s) | SW 15 | W 12 | W 12 | W 11 | W 11 | W 10 | W 10 | W 10 | SW 13 | SW 16 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 7 | WNW 7 | WNW 7 |
| kJ | 183 | 99 | 98 | 85 | 83 | 78 | 51 | 50 | 43 | 64 | 138 | 149 | 128 | 125 | 94 | 69 | 48 | 44 | 56 |
Swell 2 Height (m) Direction Period (s) | W 11 | SSW 14 | SSW 14 | SW 14 | SW 14 | SSW 13 | SW 13 | SW 13 | SW 17 | SW 12 | SW 19 | SW 18 | SSW 15 | SSW 14 | SSW 14 | SW 17 | SW 16 | SW 16 | SW 16 |
| kJ | 93 | 129 | 136 | 167 | 93 | 68 | 85 | 44 | 74 | 37 | 130 | 114 | 86 | 120 | 118 | 145 | 171 | 130 | 124 |
Swell 3 Height (m) Direction Period (s) | — | WSW 19 | WSW 19 | SW 20 | SW 18 | SW 18 | SW 17 | SW 17 | W 12 | W 12 | SSW 16 | SW 12 | SW 18 | SW 18 | SW 18 | SSW 14 | SSW 13 | SSW 13 | SSW 13 |
| kJ | — | 37 | 36 | 15 | 51 | 49 | 47 | 77 | 12 | 11 | 50 | 38 | 113 | 157 | 108 | 71 | 68 | 68 | 54 |
Wind waves Height (m) Direction Period (s) | WNW 7 | WNW 6 | WNW 6 | WNW 6 | WNW 5 | WNW 4 | WNW 5 | WNW 5 | WNW 6 | WNW 6 | — | — | — | — | — | — | — | — | — |
| kJ | 93 | 62 | 56 | 68 | 41 | 23 | 27 | 34 | 97 | 130 | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 4 | 4 | 118 | 57 | 119 | 120 | 57 | 118 | 120 | 4 | 18 | 29 | 18 | 18 | 101 | 18 | 18 | 119 | 18 |
Best forecast wave conditions in Marin County | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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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