
Surf Forecasts:
Deadman's surf forecast from 9 Sep 2026:
- Best quality surf: Sunday 13 Sep, 8AM (local time) - 6ft (1.9m), 7s period, NW swell with glassy winds.
- Most powerful swell: Monday 14 Sep, 11PM (local time) - 7ft (2.1m), 8s period, WNW swell with 593 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 5AM (local time) - 5ft (1.5m), 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 5AM. The primary swell is predicted to be 1.5m and 7s period with a secondary swell of 0.6m and 14s. Another secondary swell of 0.3m 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 2.1m 8s and forecast to arrive on Monday (Sep 14) at 11PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 11s period and expected on Thursday (Sep 10) at 2PM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Sun 13th Sep) | 5ft (1.5m) 7s |
| Best Surf | 8AM (Sun 13th Sep) | 6ft (1.9m) 7s |
| Most Powerful | 11PM (Mon 14th Sep) | 7ft (2.1m) 8s |
Table - best surf conditions forecast for Deadman's over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s take a long look at what’s coming up over the next couple of weeks. Gotta be straight with you, it’s going to be a tough watch for a while before we get any real windows of opportunity.
The setup for the first handful of days is pretty ugly. We’ve got moderate wave energy (values in the 400 to 600 range), but it’s all being hammered by onshore and cross-onshore winds, making for poor, choppy surf. It kicks off this Wednesday, September 9th, with a small SW swell of 2 ft and a very long 19-second period, but cross-shore winds just ruin the shape. This slop continues through the end of the week and into the weekend. Friday afternoon, September 11th, sees the swell bump up to 6 ft from the WNW, but the period drops to a short 7 seconds and the wind is messy. By Saturday, September 12th, we’re looking at a 7 ft swell from the WNW with that same short period and fresh, lumpy cross-onshore breezes. This is too big for beginners, but the quality is so poor, it’s not good for anyone. Honestly, this part of the week looks more interesting for kite surfing than for paddle surfing.
Now, Sunday morning, September 13th, is where things get interesting. Deadman's finally gets a break in the weather. The wind goes glassy, and we’ve got a 5 ft NW swell. The period is short at 7 seconds, but that clean, glassy surface is a game-changer. The energy is still moderate (518). This is the first real standout in the period, but it’s a morning-only window; the afternoon goes back to choppy onshore wind. The water temperature is about average for this time of year.
Monday morning, September 14th, is another solid call. Glassy, clean conditions with a light cross-offshore breeze, and a 4 ft WNW groundswell with a 9-second period. The energy is moderate (390). This is a tad smaller than Sunday but the wind is better, offering a really clean face.
After Monday, we hit another rough patch of onshore winds and lumpy conditions through to the end of that week.
The second week looks more promising for small, clean windows. Saturday, September 19th, and Sunday, September 20th, both offer glassy mornings with tiny 2 ft SW swells, but with very long periods (18 and 19 seconds) and moderate energy. The calm or light winds will make for a smooth surface. Then Monday, September 21st, is the best of this run: calm, glassy conditions with a 2 ft SW swell (17-second period), moderate wave energy (385). It’s small, but it will be clean and lined up. These are the pick of the second week.
Keep in mind, Deadman’s is a fairly consistent beach and reef setup, and crowds are likely here, so get there early for those morning windows. The long-period swells we’re seeing might break a little straight on a beach, but it should hold some shape around the reef.
Keep an eye on it, forecasts can change, but for now, lock in those Sunday and Monday mornings.
Rusty.
Short Range ForecastMostly dry. Warm (max 29°C on Wed afternoon, min 14°C on Fri morning). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 18°C on Mon afternoon, min 13°C on Fri night). Winds decreasing (fresh winds from the WNW on Sat afternoon, calm by Sun morning). | ||||||||||||||||||
Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | ||||||||||||||
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 13 | SW 19 | SW 19 | SW 18 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | WNW 7 | WNW 7 | WNW 7 | WNW 7 | NW 7 | WNW 6 | WNW 8 | WNW 9 | WNW 9 | WNW 8 |
Wave Graph | |||||||||||||||||||
83 | 181 | 224 | 300 | 346 | 403 | 352 | 348 | 343 | 387 | 384 | 288 | 261 | 273 | 179 | 191 | 251 | 318 | 508 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross | cross-on | cross | cross | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | on | glassy | cross-on | cross | cross-off | cross-on | cross-on |
High Tide | 9:17PM1.97m | 10:54AM1.65m | 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 | ||||||
Low Tide | 3:59AM-0.19m | 4:08PM0.52m | 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 | |||||||
— | 6:46 | — | — | 6:47 | — | — | 6:48 | — | — | 6:48 | — | — | 6:48 | — | — | 6:50 | — | — | |
— | — | 7:27 | — | — | 7:25 | — | — | 7:23 | — | — | 7:22 | — | — | 7:21 | — | — | 7:19 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 26 | 29 | 27 | 18 | 19 | 16 | 16 | 17 | 15 | 16 | 17 | 15 | 16 | 17 | 15 | 17 | 18 | 15 |
Feels °C | 22 | 24 | 26 | 24 | 17 | 16 | 14 | 14 | 13 | 11 | 11 | 11 | 10 | 15 | 13 | 13 | 16 | 15 | 12 |
Swell 1 Height (m) Direction Period (s) | S 11 | S 10 | SW 19 | SW 18 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | WNW 7 | SW 13 | WNW 8 | WNW 9 | SW 17 | SW 17 |
83 | 74 | 224 | 300 | 346 | 403 | 352 | 348 | 339 | 209 | 203 | 198 | 123 | 120 | 62 | 191 | 251 | 77 | 77 | |
Swell 2 Height (m) Direction Period (s) | NW 7 | SW 19 | S 10 | S 9 | WNW 12 | SSW 10 | SSW 8 | WNW 10 | SSW 7 | WSW 15 | WSW 14 | WSW 18 | WSW 12 | SW 13 | SW 19 | SW 13 | SW 13 | SW 13 | SW 12 |
26 | 181 | 48 | 42 | 81 | 116 | 57 | 40 | 10 | 84 | 75 | 31 | 14 | 113 | 58 | 61 | 61 | 42 | 23 | |
Swell 3 Height (m) Direction Period (s) | SW 13 | NW 7 | SW 13 | WNW 13 | S 9 | WNW 11 | WNW 11 | SSW 8 | SSW 11 | S 10 | S 6 | SW 21 | SW 21 | WSW 11 | WSW 11 | SW 19 | SW 18 | S 9 | W 15 |
83 | 13 | 59 | 58 | 39 | 74 | 65 | 19 | 11 | 8 | 1 | 18 | 17 | 12 | 12 | 93 | 78 | 2 | 17 | |
Wind waves Height (m) Direction Period (s) | — | — | WNW 7 | WNW 5 | WNW 5 | WNW 5 | WNW 6 | WNW 8 | WNW 7 | WNW 7 | WNW 7 | WNW 7 | WNW 7 | NW 7 | WNW 6 | — | — | WNW 9 | WNW 8 |
— | — | 37 | 19 | 13 | 20 | 51 | 232 | 343 | 387 | 384 | 288 | 261 | 273 | 179 | — | — | 318 | 508 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 2 | 2 | 101 | 3 | 3 | 102 | 71 | 102 | 101 | 93 | 102 | 103 | 74 | 2 | 101 | 3 | 3 | 102 | 74 |
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.










