Surf Forecasts:
Stinson Beach surf forecast from 15 Sep 2026:
- Best quality surf: Monday 21 Sep, 8AM (local time) - 5ft (1.5m), 9s period, WNW swell with glassy winds.
- Most powerful swell: Tuesday 22 Sep, 5PM (local time) - 4.5ft (1.4m), 12s period, WNW swell with 560 kJ wave energy.
- Next surfable swell (1★+): Friday 18 Sep, 8AM (local time) - 1.5ft (0.5m), 19s 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 Friday (Sep 18) at 8AM. The primary swell is predicted to be 0.5m and 19s period with a secondary swell of 0.6m and 8s. 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 1.4m 12s and forecast to arrive on Tuesday (Sep 22) at 5PM. 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 (Fri 18th Sep) | 1.5ft (0.5m) 19s |
| Best Surf | 8AM (Mon 21st Sep) | 5ft (1.5m) 9s |
| Most Powerful | 5PM (Tue 22nd Sep) | 4.5ft (1.4m) 12s |
Table - best surf conditions forecast for Stinson Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s look at Stinson Beach for the next couple of weeks. I’ll level with ya: it’s not gonna be firing every day, but there are some magic windows if you time it right.
Right off the bat, things are a bit lackluster. The water temps are sitting around 64°, which is a solid 6° warmer than usual for this time of year – real weird, but you won't need a thick wetsuit.
The absolute standout is Monday morning, September 21st. We’ve got a clean 3-foot swell from the SW, but the period is 17 seconds – that’s proper groundswell. Combined energy is 705. And here’s the golden ticket: glassy conditions. No wind, smooth as butter. That’s a session you set an alarm for. Because it’s a long-period swell at a beach break, the waves might be a little straight, but with zero wind, it’s hard to beat.
Another banger is Tuesday morning, September 22nd. Swell bumps up to 4 feet from the WNW, period 10 seconds, combined energy of 678. Again, glassy conditions in the morning. That’s a nice bit of size with perfect surface conditions.
Then Wednesday morning, September 23rd brings offshore magic. A clean 4-foot swell from the WNW, period 11 seconds, with a steady 9 mph offshore wind from the ENE. That’ll groom the faces and keep it clean. Combined energy is 585.
After that, things go downhill fast. From the afternoon of the 23rd through the end of the month, it’s mostly cross-onshore winds, small weak swells, or just choppy mess. The afternoons are especially rough with fresh breezes from the WNW. Mornings on the 24th, 25th, and 26th are only marginal – tiny swells and ripply. For a few days there, it’s better suited for kite surfing than paddle surfing.
Bottom line: for a beginner-friendly spot that’s "fairly consistent", the clean, calm mornings of the 21st, 22nd, and 23rd are your best bets. Go early.
Rusty out.
Short Range ForecastMostly dry. Very mild (max 18°C on Thu afternoon, min 13°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 18°C on Fri morning, min 13°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | |||||||||||||||
AM | 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) | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | SW 16 | SW 16 | SW 21 | SW 19 | SW 19 | WNW 6 | SW 18 | SW 18 | SW 18 | SW 18 | SW 19 | NW 8 | SW 17 | SW 17 | SW 17 |
Wave Graph  | |||||||||||||||||||||
 kJ | 270 | 176 | 223 | 232 | 188 | 160 | 122 | 121 | 115 | 236 | 236 | 133 | 199 | 252 | 252 | 258 | 339 | 557 | 346 | 287 | 350 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | cross-on | cross-on | on | cross-on | cross-on | cross | glassy | cross-on | cross | on | cross-on | cross-on | cross-on | cross-on | cross-on | glassy | cross-on | glassy |
High Tide | 2:34PM1.22m | 4:20AM0.89m | 3:11PM1.18m | 5:46AM0.85m | 3:58PM1.14m | 7:26AM0.86m | 4:56PM1.10m | 8:38AM0.90m | 6:04PM1.09m | 9:23AM0.94m | 7:12PM1.10m | 9:55AM0.98m | 8:14PM1.13m | ||||||||
Low Tide | 9:01AM0.45m | 10:04PM0.10m | 9:44AM0.54m | 11:00PM0.12m | 10:41AM0.62m | 00:05AM0.14m | 12:03PM0.66m | 1:15AM0.15m | 1:30PM0.66m | 2:21AM0.13m | 2:37PM0.62m | 3:15AM0.10m | 3:28PM0.57m | 3:58AM0.08m | |||||||
 | |  | |  | | | |  | | | | | | | | | | | | | |
 | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — | 6:56 | — | — |
 | — | 7:17 | — | — | 7:16 | — | — | 7:15 | — | — | 7:14 | — | — | 7:12 | — | — | 7:10 | — | — | 7:08 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 17 | 14 | 15 | 16 | 16 | 17 | 18 | 15 | 18 | 18 | 13 | 16 | 17 | 14 | 15 | 16 | 13 | 16 | 17 | 16 |
Feels °C | 17 | 16 | 13 | 13 | 13 | 14 | 16 | 16 | 13 | 18 | 16 | 10 | 15 | 16 | 11 | 12 | 12 | 9 | 16 | 16 | 16 |
Swell 1 Height (m) Direction Period (s) | WNW 8 | WNW 8 | WNW 8 | WNW 8 | SW 16 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | SW 19 | SW 19 | WNW 7 | SW 18 | SW 18 | SW 18 | SW 19 | WNW 8 | WNW 9 | WNW 9 | WNW 10 |
| kJ | 270 | 176 | 223 | 232 | 89 | 160 | 111 | 78 | 59 | 44 | 236 | 133 | 91 | 252 | 252 | 258 | 339 | 352 | 326 | 232 | 332 |
Swell 2 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 16 | SW 16 | SSW 18 | SW 14 | SW 16 | SW 16 | SW 15 | SW 19 | SSW 14 | SW 13 | SW 18 | SW 13 | SW 13 | SW 12 | SW 12 | SW 18 | SW 17 | SW 17 | SW 17 |
| kJ | 93 | 64 | 87 | 87 | 64 | 49 | 122 | 121 | 104 | 236 | 81 | 45 | 199 | 44 | 42 | 38 | 23 | 246 | 346 | 287 | 350 |
Swell 3 Height (m) Direction Period (s) | SW 12 | W 13 | SSW 20 | SSW 19 | W 12 | WNW 11 | WNW 11 | WNW 10 | SW 21 | SW 14 | S 11 | S 10 | SW 13 | S 10 | S 9 | S 9 | S 9 | SSW 12 | SSW 13 | W 17 | WNW 15 |
| kJ | 23 | 31 | 37 | 72 | 25 | 24 | 38 | 37 | 115 | 103 | 9 | 9 | 44 | 8 | 6 | 6 | 7 | 15 | 33 | 6 | 71 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | WNW 8 | — | — | — | — | — | WNW 10 | WNW 6 | — | WNW 7 | WNW 7 | WNW 7 | WNW 7 | NW 8 | — | — | — |
| kJ | — | — | — | — | 188 | — | — | — | — | — | 145 | 130 | — | 88 | 163 | 193 | 173 | 557 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 18 | 29 | 29 | 57 | 214 | 18 | 18 | 29 | 4 | 0 | 118 | 18 | 18 | 120 | 108 | 118 | 118 | 4 | 0 | 18 | 0 |
Best forecast wave conditions in Marin County | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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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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