
Surf Forecasts:
Deadman's surf forecast from 10 Sep 2026:
- Best quality surf: Tuesday 15 Sep, 2AM (local time) - 8ft (2.5m), 9s period, NW swell with cross-offshore winds.
- Most powerful swell: Tuesday 15 Sep, 2AM (local time) - 8ft (2.5m), 9s period, NW swell with 1,011 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 8AM (local time) - 2ft (0.6m), 14s 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 Sunday (Sep 13) at 8AM. The primary swell is predicted to be 1.3m and 6s period with a secondary swell of 0.6m and 14s. Another secondary swell of 0.4m and 10s 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 2.5m 9s and forecast to arrive on Tuesday (Sep 15) at 2AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 11s period and expected on Thursday (Sep 10) at 2PM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Sun 13th Sep) | 2ft (0.6m) 14s |
| Best Surf | 2AM (Tue 15th Sep) | 8ft (2.5m) 9s |
| Most Powerful | 2AM (Tue 15th Sep) | 8ft (2.5m) 9s |
Table - best surf conditions forecast for Deadman's over the next 16 days.
The Lowdown
G’day, Rusty here. Let’s have a look at what’s coming up at Deadman’s.
Right off the bat, we’ve got a pretty lean run. The first half of this 16-day window is a bit of a write-off, with nothing worth paddling out for from Thursday the 10th through to Sunday the 13th. Winds are mostly cross or cross-on, and the swell is either small or messy. The combined energy readings are moderate at best — around 480 to 560 (moderate) — but it’s all blown out.
Things start to look up from Monday the 14th, but it’s still not clean. Monday morning sees a 6ft WNW groundswell with a 9-second period, and combined energy hitting 504 (moderate). The wind is a light cross-shore, so conditions are marginal. The swell’s solid enough for experienced surfers, but beginners will find it too big and bumpy.
Tuesday the 15th is the first real standout. Early morning at Deadman’s, we’ve got a clean 5ft WNW swell with an 8-second period. The wind is light and cross-off, so the surface is clean, and combined energy sits at 393 (moderate). This is your best bet in the first week — a solid, workable wave with good shape. The water temp is about average for this time of year, so no surprises there.
After that, the surf drops right back. Wednesday the 16th through Saturday the 19th is a long stretch of small, weak, and choppy conditions. Swell heights drop to 1ft to 2ft, and the combined energy falls below 300 (weak). Not worth the effort.
Then we hit the second week, and there’s some promise. Sunday the 20th morning is glassy with a 2ft SW swell and combined energy at 307 (moderate). The wind is calm and it’s dead flat clean. Monday the 21st morning is also glassy, with a 2ft SW swell and combined energy at 310 (moderate). These are light, clean days for a longboard or a funboard — the sort of morning where the sets are far apart because the period is long (17 seconds), so it’s easy to paddle out, but you’ll be waiting between waves.
Thursday the 24th morning brings a moderate offshore wind (SSE) and a 2ft SW swell with combined energy at 293 (weak). It’s clean again but small.
The only real standout for bigger surf in the second week is Friday the 25th morning. A risk of thunderstorms, but the wind is a moderate cross-off from the south, and the swell jumps to 7ft from the NW with an 8-second period. Combined energy is 1050 (strong). That’s a serious amount of energy for Deadman’s — this is for experts only, as anything over 8ft gets critical. The short period means it’ll be punchy and steep, not a long roller. Clean conditions though.
So, to sum it up: Tuesday the 15th morning is your first standout — clean and solid. And if you’re an experienced surfer who doesn’t mind a bit of size and a thunderstorm risk, Friday the 25th morning could be the biggest, most powerful session of the whole window.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Wed night, min 14°C on Thu night). Winds increasing (light winds from the SW on Wed night, fresh winds from the WNW by Sat afternoon). | Days 5-7 Weather SummaryMostly dry. Very mild (max 18°C on Sun afternoon, min 13°C on Sat night). Winds decreasing (fresh winds from the WNW on Sat night, calm by Sun night). | ||||||||||||||||||
Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | ||||||||||||||
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 18 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | WNW 7 | SW 14 | WNW 6 | NW 6 | NW 6 | WNW 6 | WNW 8 | WNW 9 | WNW 9 | NW 9 | WNW 8 | WNW 8 | WNW 8 |
Wave Graph | |||||||||||||||||||
300 | 346 | 403 | 352 | 411 | 339 | 236 | 203 | 262 | 245 | 172 | 196 | 412 | 426 | 756 | 1011 | 277 | 192 | 174 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | glassy | cross | cross-on | cross-off | cross-off | cross | cross |
High Tide | 10:13PM1.92m | 11:26AM1.70m | 11:05PM1.83m | 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 | ||||||
Low Tide | 4:39AM-0.13m | 4:55PM0.36m | 5:17AM-0.01m | 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 | |||||||
— | 6:47 | — | — | 6:48 | — | — | 6:48 | — | — | 6:48 | — | — | 6:50 | — | — | 6:50 | — | — | |
— | — | 7:25 | — | — | 7:23 | — | — | 7:22 | — | — | 7:21 | — | — | 7:19 | — | — | 7:17 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 19 | 20 | 17 | 16 | 17 | 16 | 16 | 16 | 15 | 16 | 18 | 16 | 17 | 18 | 15 | 17 | 18 | 15 |
Feels °C | 24 | 18 | 17 | 15 | 14 | 13 | 12 | 12 | 10 | 10 | 15 | 13 | 14 | 16 | 14 | 12 | 16 | 15 | 13 |
Swell 1 Height (m) Direction Period (s) | SW 18 | SW 17 | SW 17 | SW 16 | WNW 10 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | WNW 6 | SW 13 | WNW 8 | WNW 9 | SW 17 | WNW 9 | WNW 8 | WNW 8 | WNW 8 |
300 | 346 | 403 | 352 | 175 | 339 | 209 | 203 | 200 | 123 | 77 | 87 | 412 | 426 | 77 | 615 | 277 | 192 | 174 | |
Swell 2 Height (m) Direction Period (s) | S 9 | WNW 12 | SSW 10 | SSW 8 | SW 16 | SSW 7 | WSW 15 | WSW 14 | WSW 18 | WSW 12 | SW 13 | SW 19 | SW 13 | SW 13 | SW 13 | SW 17 | SW 16 | SW 16 | SW 16 |
42 | 125 | 116 | 57 | 411 | 9 | 84 | 75 | 31 | 14 | 113 | 58 | 61 | 44 | 26 | 107 | 93 | 88 | 63 | |
Swell 3 Height (m) Direction Period (s) | WNW 13 | S 9 | W 21 | WNW 11 | SSW 8 | SSW 11 | SSW 6 | WNW 12 | SW 21 | WSW 21 | NW 10 | WSW 11 | SW 19 | SW 18 | S 9 | SW 12 | SW 12 | W 13 | SSW 20 |
58 | 39 | 9 | 65 | 19 | 11 | 4 | 14 | 18 | 43 | 25 | 12 | 93 | 78 | 2 | 23 | 23 | 31 | 37 | |
Wind waves Height (m) Direction Period (s) | WNW 4 | NW 4 | WNW 11 | WNW 5 | — | WNW 10 | WNW 7 | WNW 6 | WNW 6 | NW 6 | NW 6 | WNW 6 | — | — | WNW 9 | NW 9 | — | — | — |
11 | 9 | 148 | 31 | — | 226 | 236 | 181 | 262 | 245 | 172 | 196 | — | — | 756 | 1011 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 3 | 3 | 103 | 3 | 47 | 101 | 71 | 102 | 103 | 101 | 3 | 101 | 2 | 3 | 101 | 3 | 3 | 21 | 65 |
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.










