
Surf Forecasts:
Deadman's surf forecast from 15 Sep 2026:
- Best quality surf: Monday 21 Sep, 11AM (local time) - 2.5ft (0.8m), 17s period, SW swell with cross-offshore 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★+): Thursday 17 Sep, 5AM (local time) - 3.5ft (1.0m), 8s period with WNW swell.
Best Forecast Surf Conditions for Deadman's this week:
The surf forecast for Deadman's over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 17) at 5AM. The primary swell is predicted to be 1.0m and 8s period with a secondary swell of 0.4m and 11s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Deadman's 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. The largest open ocean swell (not directed at the beach) is 0.4m 18s period and expected on Wednesday (Sep 16) at 2PM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Thu 17th Sep) | 3.5ft (1.0m) 8s |
| Best Surf | 11AM (Mon 21st Sep) | 2.5ft (0.8m) 17s |
| Most Powerful | 5PM (Tue 22nd Sep) | 4.5ft (1.4m) 12s |
Table - best surf conditions forecast for Deadman's over the next 16 days.
The Lowdown
G’day, Rusty here. We’ve only got one spot on the cards for this outlook: Deadman’s. It’s a beach and reef setup that takes on the NW direction best, and it’s advanced territory. Right now, the water is sitting at 65°, which is much warmer than usual for this time of year.
First off, the real standout in this 16-day window is Tuesday the 15th morning. We’ve got a clean 5ft swell out of the WNW, period of 8 seconds pushing moderate combined energy (386), and a light cross-off SSW breeze. The waves are clean, the energy is there, and it’s the best shot we’ve got in the first week. Can’t be greedy with the quality here.
Wednesday the 16th and Thursday the 17th mornings are a step down. The swell drops to 2ft on Thursday, but the period jumps to 16 seconds, bringing moderate energy (271) with a light cross-off wind. It’s clean, but that long period at a beach-and-reef setup can make it a bit too straight, so don’t expect barrels.
Friday the 18th morning is a real treat—glassy conditions, 2ft of SW groundswell with a very long 19-second period. The combined energy is moderate (383), and the glassy wind is gold. This is the absolute pick of the week. It’s small, but oh so clean. The long period means better-shaped waves and easier paddling out between sets.
Saturday the 19th and Sunday the 20th get messy. Cross-on winds kill the quality, and the swell stays tiny. The energy picks up a bit on Sunday afternoon to 535, but with a fresh 19 mph cross-on, it’s a chop-fest. Forget it.
Monday the 21st morning brings a clean 3ft SW swell, 17-second period, and very high energy (672) with a light cross-off. This is a solid session if you’re keen—clean lines, good energy, and a long period that’ll hold shape.
Now, here’s the second big standout: Tuesday the 22nd morning. Deadman’s gets a glassy 4ft WNW swell with a 10-second period, and the combined energy is solid (678). No wind at all—glassed out. This is premium. Size is right for advanced surfers, and the direction matches the optimum. This is the best on offer for the whole outlook. Mark it.
Wednesday the 23rd and Thursday the 24th mornings fizzle out. The energy drops, winds turn cross or cross-on, and the swell goes back to 2ft to 2ft. Not worth it.
Friday the 25th morning is marginal with a 3ft WNW swell, 10-second period, and light cross wind. Quiet session.
Saturday the 26th sees similar conditions, but afternoon winds ruin it.
The last few days from Sunday the 27th through to Wednesday the 30th remain poor. Small swell, cross-on winds, and low energy. Monday the 28th and Tuesday the 29th mornings stay under 2ft and choppy. Wednesday the 30th morning has a tiny 3ft WNW with a 7-second period—that’s weak, short-period slop.
Bottom line: Deadman’s is the only game in town. If you’re free, hit Tuesday the 15th morning for a clean session, or wait for Friday the 18th morning when it’s glassy and smooth. But the absolute best is Tuesday the 22nd morning—4ft, glassy, and pumping energy. That’s the one to circle.
Rusty.
Short Range ForecastMostly dry. Very mild (max 18°C on Thu afternoon, min 14°C on Tue morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 18°C on Fri afternoon, 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 | |||||||||||||||||||||
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 | cross-off | cross | cross | cross-on | cross | cross | cross-off | cross-on | cross-on | glassy | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross | cross-off | cross | cross-off |
High Tide | 1:57PM1.76m | 3:43AM1.28m | 2:35PM1.73m | 5:17AM1.24m | 3:21PM1.69m | 7:13AM1.28m | 4:17PM1.65m | 8:21AM1.34m | 5:22PM1.63m | 8:59AM1.39m | 6:28PM1.63m | 9:26AM1.42m | 7:30PM1.65m | ||||||||
Low Tide | 8:45PM0.21m | 8:26AM0.95m | 9:42PM0.27m | 9:28AM1.09m | 10:49PM0.30m | 10:58AM1.16m | 11:59PM0.29m | 12:19PM1.15m | 1:02AM0.25m | 1:21PM1.06m | 1:54AM0.18m | 2:11PM0.94m | 2:38AM0.12m | ||||||||
6:50 | — | — | 6:52 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — | |
— | 7:17 | — | — | 7:15 | — | — | 7:15 | — | — | 7:13 | — | — | 7:12 | — | — | 7:09 | — | — | 7:07 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 17 | 14 | 14 | 16 | 17 | 17 | 18 | 16 | 16 | 18 | 14 | 15 | 16 | 14 | 15 | 16 | 14 | 16 | 17 | 16 |
Feels °C | 14 | 14 | 11 | 11 | 12 | 15 | 16 | 16 | 14 | 16 | 16 | 12 | 14 | 13 | 11 | 12 | 12 | 10 | 16 | 15 | 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 |
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 |
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 |
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 | — | — | — |
— | — | — | — | 188 | — | — | — | — | — | 145 | 130 | — | 88 | 163 | 193 | 173 | 557 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 3 | 47 | 47 | 74 | 231 | 3 | 3 | 47 | 3 | 3 | 101 | 3 | 3 | 103 | 93 | 101 | 101 | 3 | 3 | 3 | 3 |
Best forecast wave conditions in Marin County | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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Information about the Deadman's Surf forecast
The above surf forecast table for Deadman's provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Deadman's can be found by selecting the local surf guide option on the grey menu. Our Deadman's 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 (Deadman's) 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 Deadman's 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.
Deadman's is 6 km (4 miles) from the city of San Francisco. If you plan a vacation in Marin County, look for hotels and other accommodation in San Francisco. San Francisco has rooms for a wide range of budgets as well as car hire and transport links.










