Surf Forecasts:
Deadman's surf forecast from 18 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 8AM (local time) - 4ft (1.2m), 7s period, WNW swell with cross-offshore winds.
- Most powerful swell: Thursday 20 Aug, 2AM (local time) - 5.5ft (1.7m), 7s period, WNW swell with 310 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 8AM (local time) - 4ft (1.2m), 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 Wednesday (Aug 19) at 8AM. The primary swell is predicted to be 1.2m and 7s period. 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 1.7m 7s and forecast to arrive on Thursday (Aug 20) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 15s period and expected on Tuesday (Aug 18) at 8AM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Wed 19th Aug) | 4ft (1.2m) 7s |
| Best Surf | 8AM (Wed 19th Aug) | 4ft (1.2m) 7s |
| Most Powerful | 2AM (Thu 20th Aug) | 5.5ft (1.7m) 7s |
Table - best surf conditions forecast for Deadman's over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s on the cards for Deadman's over the coming weeks. I’ll be honest with you, it’s a tough stretch ahead. We’ve got a long wait on our hands.
The first sniff of anything worthwhile doesn’t come until Thursday the 27th of August, and even then it’s only marginal. For over a week and a half straight, this place is a non-event. Most days are plagued by a persistent cross-shore wind, often blowing from the WSW at 6 to 16 mph, which keeps the surface messy with a chop. The swell is mostly small, weak, and disorganised, with a short period—not the kind of stuff that gets you out of bed.
Now, the first glimmer of hope, and I mean a tiny one, shows up on Thursday morning, August 20th. The swell bumps up just a touch to 2ft from the west with a period of 12 seconds. The energy is weak at 284, but the light 6 mph SW breeze creates a cross-shore wind that’s just light enough to keep the surface rippled rather than chopped up. It’s still a marginal call, but on a dead run like this, it’s as close as we get to a window. It won’t be great, but if you’re desperate, that’s your best early chance.
We then have to suffer through another week of poor surf and moderate breezes. The water temperature is sitting about average for the time of year, nothing wild to report.
The real standout, the one that actually gets a pulse going, is much further out. Mark your calendars for Sunday morning, August 30th. Finally, we see some light winds from the SSW making it cross-offshore. It will be clean. The swell comes from the SW at 3ft, but the period is a solid 16 seconds, meaning it’s a proper groundswell with some real energy behind it, clocking in at a strong 705. The period is long enough to shape up nicely, but at a beach-and-reef setup like Deadman's, it might break a little straight. Still, this is the best on offer by a long shot. It’s a morning session for the patient.
Right after that, on Monday morning, August 31st, we get a bigger pulse of 7ft from the WNW, but at 8 seconds it’s short period windswell. The combined energy is very strong at 1055, so there will be plenty of water moving, but the short period and cross-shore wind will keep it lumpy. It’s more of a power session than a clean session, best left for those on shorter boards.
So, to wrap it up: there’s a huge gap of poor conditions until a very marginal day on the 20th. The one to really target, if you can wait, is Sunday the 30th. It’s promising, but it’s a long way off, so don’t bank on it. Keep your eyes on the sky.
Rusty.
Short Range ForecastMostly dry. Very mild (max 17°C on Wed afternoon, min 12°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 17°C on Thu afternoon, min 13°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Mon 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | ||||||||||||||
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 15 | SW 14 | WNW 8 | SW 16 | WNW 7 | WNW 8 | WNW 8 | WNW 7 | W 12 | W 12 | WNW 7 | WNW 7 | WNW 6 | WNW 6 | WNW 7 | WNW 8 | WNW 8 | WNW 8 | WNW 9 | WNW 9 |
Wave Graph | ||||||||||||||||||||
255 | 169 | 113 | 208 | 149 | 161 | 170 | 310 | 134 | 150 | 243 | 192 | 181 | 155 | 81 | 122 | 149 | 160 | 151 | 113 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross | cross | cross | cross | cross-on | cross-on | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross | cross-on |
High Tide | 2:58PM1.76m | 3:45AM1.25m | 3:35PM1.75m | 5:17AM1.17m | 4:18PM1.74m | 7:24AM1.19m | 5:08PM1.73m | 8:52AM1.28m | 6:06PM1.74m | 9:41AM1.36m | 7:05PM1.76m | 10:17AM1.41m | 8:01PM1.80m | |||||||
Low Tide | 9:31PM0.36m | 9:05AM0.70m | 10:35PM0.35m | 9:59AM0.90m | 11:43PM0.32m | 11:13AM1.04m | 00:48AM0.28m | 12:32PM1.10m | 1:48AM0.21m | 1:37PM1.09m | 2:38AM0.13m | 2:30PM1.03m | 3:21AM0.05m | |||||||
— | — | 6:26 | — | — | 6:28 | — | — | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — | 6:31 | — | — | |
8:00 | — | — | 7:59 | — | — | 7:58 | — | — | 7:55 | — | — | 7:54 | — | — | 7:53 | — | — | 7:52 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 14 | 14 | 15 | 13 | 16 | 17 | 14 | 15 | 17 | 15 | 15 | 17 | 15 | 15 | 17 | 15 | 15 | 17 | 15 |
Feels °C | 14 | 12 | 12 | 13 | 11 | 15 | 15 | 12 | 14 | 14 | 13 | 13 | 14 | 13 | 14 | 15 | 13 | 14 | 15 | 13 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 14 | WNW 8 | SW 16 | WNW 7 | WNW 8 | SW 15 | SW 15 | W 12 | W 12 | SSW 14 | SW 14 | WNW 10 | SSW 13 | WNW 7 | SW 17 | WNW 8 | WNW 8 | WNW 9 | WNW 9 |
255 | 169 | 113 | 208 | 148 | 161 | 223 | 183 | 134 | 132 | 138 | 93 | 37 | 68 | 81 | 102 | 149 | 160 | 151 | 108 | |
Swell 2 Height (m) Direction Period (s) | WNW 9 | WNW 6 | SW 15 | SSW 13 | SW 14 | SW 15 | W 12 | W 11 | SSW 14 | SSW 14 | W 11 | W 11 | SSW 13 | WNW 10 | WNW 8 | SW 13 | SW 12 | SW 19 | SW 18 | SSW 15 |
26 | 30 | 220 | 66 | 149 | 217 | 74 | 93 | 129 | 136 | 62 | 61 | 68 | 35 | 24 | 43 | 38 | 130 | 114 | 86 | |
Swell 3 Height (m) Direction Period (s) | S 9 | WNW 9 | SW 9 | W 16 | SW 17 | W 13 | SW 21 | — | WSW 19 | SW 19 | SW 20 | SW 18 | SW 18 | SW 18 | SW 13 | W 12 | SW 19 | SSW 16 | SSW 16 | SW 18 |
7 | 26 | 3 | 19 | 77 | 82 | 18 | — | 37 | 14 | 15 | 51 | 49 | 48 | 44 | 12 | 55 | 50 | 50 | 113 | |
Wind waves Height (m) Direction Period (s) | WNW 7 | — | — | WNW 8 | — | — | WNW 8 | WNW 7 | WNW 7 | WNW 6 | WNW 7 | WNW 7 | WNW 6 | WNW 6 | — | WNW 8 | — | — | — | — |
25 | — | — | 113 | — | — | 170 | 310 | 113 | 150 | 243 | 192 | 181 | 155 | — | 122 | — | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 104 | 3 | 21 | 102 | 3 | 3 | 102 | 3 | 3 | 101 | 3 | 3 | 101 | 3 | 47 | 102 | 3 | 3 | 102 | 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.











