Surf Forecasts:
Deadman's surf forecast from 5 Sep 2026:
- Best quality surf: Saturday 5 Sep, 5AM (local time) - 3.5ft (1.0m), 16s period, SW swell with glassy winds.
- Most powerful swell: Saturday 5 Sep, 2AM (local time) - 3.5ft (1.0m), 16s period, SW swell with 515 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 5AM (local time) - 3.5ft (1.0m), 16s period with SW 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 Saturday (Sep 05) at 5AM. The primary swell is predicted to be 1.0m and 16s period with a secondary swell of 1.0m and 10s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Deadman's in the next 16 days are 1.0m 16s and forecast to arrive on Saturday (Sep 05) at 2AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.3m 7s period and expected on Thursday (Sep 10) at 11PM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Sat 5th Sep) | 3.5ft (1.0m) 16s |
| Best Surf | 5AM (Sat 5th Sep) | 3.5ft (1.0m) 16s |
| Most Powerful | 2AM (Sat 5th Sep) | 3.5ft (1.0m) 16s |
Table - best surf conditions forecast for Deadman's over the next 16 days.
The Lowdown
G’day, Rusty here. Look, I’ll be straight with you—this 16-day stretch for Deadman’s is a tale of two halves. The first week and a bit is pretty ordinary, with a lot of messy, choppy conditions. The real payoff comes right at the end. There’s a big gap of quiet, poor-quality days before we get to the standout. Hang in there.
From Friday 4th September through to Sunday 13th September, it’s a write-off for any decent surf. Winds are mostly cross-on or cross-shore, making for chop and crummy conditions. Swells are small, mostly around 3 ft to 5 ft, with short periods between 6 and 10 seconds, so the wave energy is weak to moderate (values between 92 and 299). The water temp is a notable 63° on Friday 4th, which is 4° warmer than usual—quite a treat for this time of year, but you won’t be enjoying it in these conditions. Don’t bother paddling out.
Monday 14th and Tuesday 15th September bring no improvement—still small, messy, and cross-onshore. Same story Wednesday 16th and Thursday 17th. On Thursday morning 17th there’s a 4 ft swell, but period is a short 7 seconds and wind is cross-onshore again, so the energy is just moderate (336). No go.
Now, here’s the one to mark on your calendar: Friday 18th September, morning. That’s our standout. There’s a 8 ft swell from the WNW, with a period of 8 seconds, and it’s glassy—zero wind. The combined energy is strong at 1112. This is solid, powerful stuff, and clean as a whistle. For Deadman’s (a beach and reef setup), this will be pumping. But heads up: 8 ft is expert territory, so if you’re not comfortable holding on to a big lump of water, sit this one out. The swell direction is WNW, which doesn’t match the optimum NW direction, but the clean conditions and size still make it the best of the whole outlook. Crowds are possible here—it says “often”, so be ready to share.
After that, Saturday 19th and Sunday 20th September drop back to tiny 2 ft swell with glassy to light winds, but energy is still moderate and the shape won’t be worth the paddle.
Bottom line: there’s one proper session in this whole 16-day window, and that’s Friday morning 18th September. Everything else is flat or blown out.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Mon afternoon, min 14°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 24°C on Thu afternoon, min 16°C on Mon night). Wind will be generally light. | ||||||||||||||||||
Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | ||||||||||||||
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 16 | WNW 10 | WNW 9 | WNW 9 | WNW 9 | WNW 6 | WNW 6 | WNW 6 | WNW 7 | WNW 8 | WNW 8 | WNW 8 | SW 16 | SW 19 | SW 19 | SW 18 | SW 17 | SW 17 | SW 16 |
Wave Graph  | |||||||||||||||||||
 kJ | 515 | 148 | 161 | 56 | 127 | 107 | 124 | 52 | 64 | 72 | 98 | 66 | 43 | 181 | 224 | 192 | 287 | 283 | 245 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | glassy | cross-on | cross-on | cross-on | cross-on | on | cross | cross-on | cross-off | glassy | cross | cross | glassy | cross-on | glassy | cross-on | cross-on | cross |
High Tide | 8:05AM1.34m | 6:00PM1.94m | 9:01AM1.44m | 7:10PM1.97m | 9:43AM1.52m | 8:17PM1.98m | 10:20AM1.58m | 9:17PM1.97m | 10:54AM1.65m | 10:13PM1.92m | 11:26AM1.70m | 11:05PM1.83m | |||||||
Low Tide | 00:17AM0.05m | 12:01PM1.11m | 1:25AM-0.05m | 1:20PM1.03m | 2:24AM-0.13m | 2:23PM0.87m | 3:14AM-0.19m | 3:18PM0.69m | 3:59AM-0.19m | 4:08PM0.52m | 4:39AM-0.13m | 4:55PM0.36m | |||||||
 |  | | | | | | | | | | |  |  | | | | | | |
 | — | 6:43 | — | — | 6:43 | — | — | 6:43 | — | — | 6:45 | — | — | 6:46 | — | — | 6:47 | — | — |
 | — | — | 7:32 | — | — | 7:31 | — | — | 7:30 | — | — | 7:29 | — | — | 7:27 | — | — | 7:25 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 16 | 18 | 16 | 16 | 17 | 15 | 17 | 22 | 18 | 18 | 20 | 17 | 19 | 20 | 22 | 23 | 24 | 20 |
Feels °C | 14 | 15 | 15 | 13 | 13 | 13 | 11 | 16 | 20 | 16 | 17 | 18 | 15 | 18 | 18 | 20 | 20 | 20 | 18 |
Swell 1 Height (m) Direction Period (s) | WNW 10 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | SSW 12 | SSW 11 | SSW 11 | S 10 | SSW 11 | SSW 12 | SW 16 |
| kJ | 212 | 430 | 419 | 393 | 437 | 394 | 384 | 378 | 342 | 303 | 361 | 267 | 254 | 186 | 173 | 73 | 180 | 256 | 245 |
Swell 2 Height (m) Direction Period (s) | SW 16 | WNW 10 | SSW 12 | WNW 9 | SW 10 | SW 11 | SW 10 | WNW 6 | SSW 9 | WNW 8 | WNW 8 | WNW 8 | WNW 7 | WNW 7 | SW 19 | SSW 12 | SW 17 | SW 17 | WNW 11 |
| kJ | 515 | 148 | 90 | 56 | 24 | 30 | 25 | 52 | 8 | 72 | 98 | 66 | 37 | 36 | 224 | 101 | 287 | 283 | 65 |
Swell 3 Height (m) Direction Period (s) | SSW 12 | SSW 12 | W 17 | SSW 11 | W 14 | W 14 | W 11 | SW 10 | W 12 | SW 19 | SW 18 | SW 18 | SW 16 | SW 19 | WNW 7 | SW 18 | WNW 12 | WNW 11 | WSW 19 |
| kJ | 79 | 91 | 5 | 45 | 4 | 15 | 22 | 15 | 12 | 15 | 50 | 50 | 43 | 181 | 21 | 192 | 107 | 71 | 36 |
Wind waves Height (m) Direction Period (s) | — | — | WNW 9 | WNW 5 | WNW 9 | WNW 6 | WNW 6 | — | WNW 7 | — | — | — | — | — | — | — | — | S 3 | SSW 10 |
| kJ | — | — | 161 | 42 | 127 | 107 | 124 | — | 64 | — | — | — | — | — | — | — | — | 8 | 717 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 21 | 2 | 446 | 71 | 21 | 102 | 71 | 2 | 102 | 17 | 2 | 103 | 17 | 2 | 3 | 2 | 3 | 47 | 3 |
Best forecast wave conditions in Marin County | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.
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