Surf Forecasts:
Deadman's surf forecast from 11 Sep 2026:
- Best quality surf: Sunday 13 Sep, 11PM (local time) - 5.5ft (1.7m), 7s period, WNW swell with glassy winds.
- Most powerful swell: Tuesday 15 Sep, 5AM (local time) - 8ft (2.4m), 9s period, WNW swell with 844 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 11PM (local time) - 5.5ft (1.7m), 7s 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 Sunday (Sep 13) at 11PM. The primary swell is predicted to be 1.7m and 7s period with a secondary swell of 0.5m and 13s. Another secondary swell of 0.3m and 19s is also forecast. 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 2.4m 9s and forecast to arrive on Tuesday (Sep 15) at 5AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 16s period and expected on Thursday (Sep 17) at 11AM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Sun 13th Sep) | 5.5ft (1.7m) 7s |
| Best Surf | 11PM (Sun 13th Sep) | 5.5ft (1.7m) 7s |
| Most Powerful | 5AM (Tue 15th Sep) | 8ft (2.4m) 9s |
Table - best surf conditions forecast for Deadman's over the next 16 days.
The Lowdown
Rusty here. Let’s break it down, feet and inches style.
The next week and a half is a tough stretch. From Friday the 11th all the way through late in the week of the 21st, the wind is mostly onshore or cross-onshore, trashing whatever swell is sneaking in. The water at Deadman's is a very warm 66°, a huge 7° above normal for the season. The combined swell energy is mostly moderate, bouncing between 250 and 600, but it’s all messy and blown out.
The one true standout is Monday the 14th. Monday morning, the wind drops to glass – perfectly flat, dead calm. We've got a 5ft swell from the WNW with a 9-second period. The combined energy is a solid 475 (moderate wave energy). It’s going to be clean as a whistle. That’s your best session.
Tuesday the 15th morning is a decent backup. A light cross-offshore breeze from the SSW at 9 mph cleans up the same 5ft WNW swell. The period drops to 8 seconds, and energy is at 429 (moderate wave energy). Not as perfect as Monday morning, but solid.
Beyond that, it’s cross-onshore chop. There’s a spike on Thursday the 24th morning with a 7ft swell from the NW at 8 seconds. The energy jumps to 1016 (strong wave energy), but with only light cross-shore winds and that short period, it’s going to be lumpy and messy at this beach and reef setup. That’s more of a kite-surfing setup than a clean paddle. Your one golden moment is Monday the 14th. Don’t sleep on it.
Rusty.
Short Range ForecastMostly dry. Very mild (max 18°C on Sun afternoon, min 14°C on Fri morning). Winds decreasing (fresh winds from the WNW on Sat afternoon, calm by Sun night). | Days 4-6 Weather SummaryMostly dry. Very mild (max 18°C on Mon afternoon, min 14°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | |||||||||||||||
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) | SW 16 | SW 16 | WNW 7 | SW 14 | WNW 6 | NW 6 | SW 13 | WNW 6 | WNW 8 | WNW 9 | WNW 8 | WNW 9 | WNW 8 | WNW 8 | WNW 9 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | SW 16 | SW 21 |
Wave Graph  | |||||||||||||||||||||
 kJ | 411 | 339 | 229 | 203 | 262 | 216 | 113 | 177 | 277 | 336 | 329 | 601 | 313 | 239 | 273 | 153 | 160 | 76 | 58 | 121 | 115 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross-on | cross-on | on | on | cross-on | glassy | glassy | cross-on | cross | cross-off | cross | cross-off | cross-off | cross | cross-on | cross | cross-on | cross-on |
High Tide | 11:57AM1.74m | 11:55PM1.72m | 12:26PM1.77m | 00:46AM1.59m | 12:55PM1.78m | 1:38AM1.47m | 1:25PM1.78m | 2:35AM1.36m | 1:57PM1.76m | 3:43AM1.28m | 2:35PM1.73m | 5:17AM1.24m | 3:21PM1.69m | ||||||||
Low Tide | 5:40PM0.25m | 5:53AM0.15m | 6:25PM0.18m | 6:29AM0.35m | 7:09PM0.15m | 7:05AM0.56m | 7:55PM0.17m | 7:42AM0.77m | 8:45PM0.21m | 8:26AM0.95m | 9:42PM0.27m | 9:28AM1.09m | 10:49PM0.30m | ||||||||
 |  |  | | | | | | | | | | | | | | |  | | | | |
 | 6:48 | — | — | 6:48 | — | — | 6:48 | — | — | 6:50 | — | — | 6:50 | — | — | 6:52 | — | — | 6:52 | — | — |
 | — | 7:23 | — | — | 7:22 | — | — | 7:21 | — | — | 7:19 | — | — | 7:17 | — | — | 7:15 | — | — | 7:15 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 17 | 16 | 16 | 17 | 15 | 16 | 18 | 16 | 17 | 18 | 15 | 16 | 17 | 15 | 16 | 16 | 15 | 16 | 17 | 15 |
Feels °C | 14 | 14 | 13 | 13 | 12 | 9 | 14 | 14 | 13 | 16 | 15 | 12 | 14 | 13 | 13 | 13 | 13 | 13 | 15 | 15 | 13 |
Swell 1 Height (m) Direction Period (s) | WNW 10 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | WNW 9 | SW 17 | SW 17 | WNW 8 | WNW 8 | WNW 9 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 |
| kJ | 200 | 339 | 209 | 203 | 198 | 123 | 113 | 87 | 61 | 336 | 77 | 77 | 313 | 239 | 273 | 153 | 160 | 76 | 58 | 51 | 24 |
Swell 2 Height (m) Direction Period (s) | SW 16 | WNW 10 | WSW 15 | WSW 14 | WSW 18 | WSW 12 | WNW 10 | SW 19 | SW 19 | SW 13 | SW 13 | SW 12 | SW 16 | SW 16 | SW 16 | SW 16 | SW 17 | WNW 11 | SSW 16 | SW 16 | SW 15 |
| kJ | 411 | 63 | 84 | 75 | 31 | 29 | 38 | 58 | 92 | 61 | 26 | 23 | 93 | 64 | 63 | 87 | 145 | 23 | 169 | 121 | 104 |
Swell 3 Height (m) Direction Period (s) | SSW 8 | SSW 7 | SSW 6 | WNW 12 | SW 22 | WSW 21 | WSW 11 | WSW 11 | WSW 10 | SW 18 | S 9 | W 15 | SW 12 | W 13 | SSW 20 | SSW 19 | WNW 12 | SW 14 | WNW 11 | SW 21 | SW 21 |
| kJ | 19 | 9 | 4 | 14 | 18 | 42 | 12 | 12 | 10 | 78 | 2 | 17 | 23 | 31 | 37 | 72 | 28 | 49 | 23 | 72 | 115 |
Wind waves Height (m) Direction Period (s) | — | WNW 7 | WNW 7 | WNW 6 | WNW 6 | NW 6 | WNW 6 | WNW 6 | WNW 8 | — | WNW 8 | WNW 9 | — | — | — | — | — | SSW 2 | — | — | — |
| kJ | — | 83 | 229 | 140 | 262 | 216 | 87 | 177 | 277 | — | 329 | 601 | — | — | — | — | — | 1 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 3 | 101 | 71 | 102 | 103 | 101 | 101 | 103 | 2 | 2 | 101 | 3 | 3 | 102 | 3 | 3 | 102 | 38 | 119 | 104 | 21 |
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.
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