Surf Forecasts:
Deadman's surf forecast from 27 Aug 2026:
- Best quality surf: Sunday 30 Aug, 11AM (local time) - 3.5ft (1.0m), 16s period, SW swell with cross-offshore winds.
- Most powerful swell: Saturday 29 Aug, 11PM (local time) - 7.5ft (2.3m), 8s period, WNW swell with 638 kJ wave energy.
- Next surfable swell (1★+): Friday 28 Aug, 8AM (local time) - 2ft (0.6m), 17s 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 Friday (Aug 28) at 8AM. The primary swell is predicted to be 0.6m and 17s period with a secondary swell of 1.3m and 7s. 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 2.3m 8s and forecast to arrive on Saturday (Aug 29) 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 1.0m 14s period and expected on Thursday (Sep 03) at 5PM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Fri 28th Aug) | 2ft (0.6m) 17s |
| Best Surf | 11AM (Sun 30th Aug) | 3.5ft (1.0m) 16s |
| Most Powerful | 11PM (Sat 29th Aug) | 7.5ft (2.3m) 8s |
Table - best surf conditions forecast for Deadman's over the next 16 days.
The Lowdown
Hey mates, Rusty here. Let’s break down the next couple weeks.
The water is running way warmer than normal for this time of year, about 4° warmer, so the sting is off the air.
We start off rough. Thursday the 27th and Friday the 28th are poor. Thursday morning has a weak 4ft swell with a short 6-second period and cross wind—junk. Thursday afternoon picks up to 5ft, but the cross-onshore wind chops it. Friday morning has a tiny 2ft swell with a long 17-second period, but it’s only marginal. Friday afternoon is just as bad.
Saturday the 29th is a tease. Morning brings a 3ft, 18-second groundswell with clean cross winds, but it’s still only marginal. Afternoon gets blown out.
Sunday the 30th morning is the clear standout. Deadman’s will have a clean 3ft swell from the SW, with a long 16-second period. The wind is light and cross-offshore, so the wave faces will be smooth. The combined energy is pumping at 675 (moderate-to-strong), so there’s some real push. For this spot, that long period should give some nice, lined-up walls. Crowds are common here, so get in early. Sunday afternoon goes choppy again.
Monday the 31st and Tuesday the 1st of September are a washout—cross winds and poor conditions. The energy drops to a weak 56 on Tuesday morning. Wednesday the 2nd and Thursday the 3rd are no better, with tiny 1ft to 2ft swell and fresh onshore winds making everything lumpy.
There’s a gap of several poor days, but Saturday the 5th of September morning offers another look. Deadman’s will be glassy—dead calm—with a 3ft, 16-second groundswell. The energy is still solid at 549 (moderate). The glassy surface will make even the small waves feel good. Sunday the 6th morning also has glassy conditions with a similar 3ft, 15-second swell.
The second week gets sloppy again. Monday the 7th has a brief clean window with a 3ft, 8-second swell, but it’s ordinary. The rest of the week is mostly cross-onshore winds and poor surf. Wednesday the 9th morning is glassy with a 2ft, 16-second swell—clean but small.
The bottom line: Sunday the 30th morning is your best bet. Clean, cross-offshore wind and strong groundswell energy. The glassy Saturday the 5th of September morning is a backup, but it’s smaller. A lot of days in between are for fixing dings.
Rusty.
Short Range ForecastMostly dry. Very mild (max 18°C on Thu afternoon, min 13°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 16°C on Sun afternoon, min 13°C on Sun morning). Wind will be generally light. | ||||||||||||||||||||
Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | |||||||||||||||
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 6 | WNW 6 | WNW 7 | SW 17 | WNW 7 | SW 18 | SW 18 | SW 17 | WNW 8 | SW 16 | SW 15 | SW 14 | WNW 8 | WNW 8 | WNW 7 | WNW 7 | SW 13 | SW 18 | SW 16 | SW 16 | SW 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 121 | 197 | 192 | 287 | 132 | 252 | 600 | 405 | 532 | 489 | 314 | 305 | 211 | 110 | 71 | 56 | 87 | 111 | 69 | 94 | 216 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross-off | cross | cross | cross | cross | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-off |
High Tide | 11:53AM1.52m | 10:59PM1.78m | 12:15PM1.57m | 11:41PM1.71m | 12:40PM1.64m | 00:26AM1.62m | 1:08PM1.71m | 1:15AM1.52m | 1:39PM1.79m | 2:12AM1.41m | 2:14PM1.85m | 3:19AM1.31m | 2:56PM1.89m | 4:47AM1.25m | |||||||
Low Tide | 5:05PM0.65m | 5:30AM-0.02m | 5:41PM0.54m | 5:58AM0.07m | 6:19PM0.44m | 6:27AM0.20m | 7:01PM0.34m | 6:58AM0.38m | 7:48PM0.27m | 7:32AM0.58m | 8:43PM0.21m | 8:11AM0.78m | 9:47PM0.17m | ||||||||
 | |  |  | | | |  |  | | | | | | | | | | | | | |
 | 6:35 | — | — | 6:35 | — | — | 6:37 | — | — | 6:37 | — | — | 6:37 | — | — | 6:39 | — | — | 6:39 | — | — |
 | — | 7:46 | — | — | 7:45 | — | — | 7:44 | — | — | 7:42 | — | — | 7:40 | — | — | 7:38 | — | — | 7:37 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 18 | 16 | 15 | 16 | 15 | 15 | 16 | 15 | 15 | 16 | 14 | 15 | 16 | 16 | 16 | 16 | 15 | 16 | 17 | 15 |
Feels °C | 17 | 16 | 13 | 13 | 15 | 13 | 13 | 11 | 11 | 13 | 13 | 12 | 11 | 12 | 13 | 14 | 13 | 13 | 15 | 13 | 12 |
Swell 1 Height (m) Direction Period (s) | S 12 | S 11 | SW 14 | WNW 7 | SW 19 | SW 18 | SW 18 | SW 17 | SW 16 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 7 | WNW 7 | S 12 | SSW 13 | SSW 12 | SSW 12 | SW 16 |
| kJ | 70 | 62 | 128 | 148 | 380 | 252 | 600 | 405 | 502 | 186 | 176 | 243 | 211 | 110 | 71 | 56 | 72 | 113 | 113 | 113 | 216 |
Swell 2 Height (m) Direction Period (s) | SW 15 | SW 14 | S 11 | SW 17 | S 10 | SW 14 | S 9 | S 9 | S 9 | SW 16 | SW 15 | SW 14 | SSW 14 | SW 14 | SSW 13 | SSW 13 | SW 13 | SW 18 | WNW 9 | WNW 9 | S 11 |
| kJ | 75 | 74 | 63 | 287 | 32 | 71 | 15 | 6 | 6 | 489 | 314 | 305 | 264 | 208 | 204 | 114 | 87 | 111 | 59 | 53 | 62 |
Swell 3 Height (m) Direction Period (s) | SW 18 | SW 18 | W 10 | S 11 | W 10 | S 10 | S 9 | — | S 9 | S 9 | S 9 | S 9 | SW 20 | SW 19 | W 10 | S 12 | SW 18 | S 11 | SW 16 | SW 16 | WNW 9 |
| kJ | 52 | 119 | 18 | 57 | 30 | 16 | 6 | — | 2 | 2 | 2 | 2 | 16 | 15 | 8 | 47 | 50 | 21 | 69 | 94 | 43 |
Wind waves Height (m) Direction Period (s) | WNW 6 | WNW 6 | WNW 7 | — | WNW 7 | WNW 7 | WNW 7 | WNW 7 | WNW 8 | — | — | — | — | — | — | — | WNW 7 | WNW 10 | — | WNW 3 | WNW 5 |
| kJ | 121 | 197 | 192 | — | 132 | 186 | 193 | 242 | 532 | — | — | — | — | — | — | — | 36 | 88 | — | 3 | 61 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 3 | 101 | 3 | 3 | 3 | 74 | 3 | 102 | 101 | 3 | 21 | 47 | 53 | 119 | 32 | 138 | 103 | 71 | 3 | 102 | 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.
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