Surf Forecasts:
Deadman's surf forecast from 18 Aug 2026:
- Most powerful swell: Thursday 20 Aug, 8AM (local time) - 5ft (1.6m), 8s period, NW swell with 297 kJ wave energy.
Best Forecast Surf Conditions for Deadman's this week:
The most powerful waves expected at Deadman's in the next 16 days are 1.6m 8s and forecast to arrive on Thursday (Aug 20) at 8AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 15s period and expected on Tuesday (Aug 18) at 11AM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8AM (Thu 20th Aug) | 5ft (1.6m) 8s |
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 the next couple of weeks.
Right off the bat, I’ve got to be straight with you – it’s a rough stretch. We’re looking at a blank run for the first few days because the conditions are just not cooperating. There’s no real recommendation for a surf until the morning of Thursday, 27th August, and even then it’s a marginal call. The water is running at 63°F which is much warmer than normal for this time of year, so that’s a nice surprise if you’re paddling out.
The first real chance that might get your heart beating is the morning of Thursday, 27th August at Deadman's. It’s a beach and reef setup, mostly for the advanced crew. We’ve got a 6 ft swell rolling in from the WNW, with a combined energy of 534 (moderate wave energy). The wind is light and cross-shore from the SW, which will keep things clean. The swell period is 8 seconds, so it’s a bit short period, but it’s the best we’ve seen in a while. Afternoons get wrecked by a 16 mph cross-onshore, so hit it early.
Friday, 28th August morning is similar – 6 ft from the WNW with a period of 8 seconds, and now the combined energy is up to 650 (moderate to strong). Still a light cross-shore breeze, so the morning window is your friend. The afternoons are cooked by a fresh 19 mph cross-onshore, so plan accordingly.
That’s really the only window worth chasing. After that, the swell dips and the winds stay messy. The morning of Saturday, 29th August has a 2 ft SW swell at 16 seconds, but it’s cross-on and the energy is weak (490). The long period means it’ll be a bit more proper at a reef like Deadman's, but the wind is against it.
The rest of the forecast is a whole lot of nothing. The wind won’t give us a break, and the swell is either too small or too short period. It’s a tough run, but it tends not to stay poor for long around here – forecasts can change.
Stay tuned, and keep your eyes on the morning windows.
Rusty.
Short Range ForecastMostly dry. Very mild (max 17°C on Wed afternoon, min 13°C on Tue morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 17°C on Fri afternoon, min 13°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||||
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 | SW 16 | SW 14 | WNW 7 | WNW 8 | WNW 7 | W 12 | WNW 7 | WNW 7 | WNW 6 | WNW 6 | WNW 7 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 9 | WNW 9 | SW 18 | SW 18 | SW 17 |
Wave Graph | |||||||||||||||||||||
35 | 208 | 149 | 125 | 128 | 202 | 134 | 154 | 229 | 130 | 155 | 186 | 142 | 142 | 149 | 131 | 131 | 113 | 157 | 108 | 145 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross | cross | cross-on | cross-on | cross | cross-on | cross | cross-on | cross-on | cross-on | cross | cross-on | cross | cross | cross-on | cross-on | cross | cross-on | cross-on |
High Tide | 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 | 10:45AM1.43m | 8:50PM1.83m | ||||||||
Low Tide | 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 | 3:14PM0.95m | 3:58AM-0.02m | |||||||
6:26 | — | — | 6:28 | — | — | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — | 6:31 | — | — | 6:31 | — | — | |
— | 7:59 | — | — | 7:58 | — | — | 7:55 | — | — | 7:54 | — | — | 7:53 | — | — | 7:52 | — | — | 7:51 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 15 | 14 | 16 | 17 | 14 | 15 | 17 | 15 | 15 | 17 | 14 | 15 | 17 | 15 | 15 | 16 | 15 | 14 | 16 | 14 |
Feels °C | 13 | 13 | 12 | 15 | 15 | 11 | 14 | 14 | 13 | 13 | 14 | 11 | 14 | 15 | 13 | 14 | 13 | 13 | 12 | 13 | 12 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 16 | WNW 7 | WNW 7 | SW 15 | SW 15 | W 12 | W 12 | SSW 14 | W 11 | SSW 13 | SSW 13 | WNW 8 | SW 17 | WNW 8 | WNW 8 | WNW 9 | WNW 9 | WNW 8 | SSW 14 | WNW 8 |
220 | 208 | 118 | 125 | 223 | 183 | 134 | 132 | 138 | 82 | 68 | 68 | 142 | 74 | 149 | 131 | 131 | 86 | 58 | 118 | 32 | |
Swell 2 Height (m) Direction Period (s) | WNW 6 | WNW 8 | SW 14 | SW 15 | W 12 | W 11 | SSW 14 | SSW 14 | W 11 | SW 14 | SW 18 | SW 18 | SW 13 | SW 13 | SW 12 | SW 19 | SW 18 | SSW 15 | SSW 14 | SW 18 | SW 17 |
35 | 37 | 149 | 217 | 74 | 91 | 129 | 136 | 58 | 93 | 49 | 48 | 44 | 43 | 38 | 130 | 114 | 85 | 120 | 108 | 145 | |
Swell 3 Height (m) Direction Period (s) | WNW 8 | SSW 13 | SW 17 | W 13 | SW 21 | — | WSW 19 | WSW 19 | SW 20 | SW 18 | SW 18 | W 13 | SW 17 | W 12 | SW 19 | SSW 12 | SW 12 | SW 18 | SW 18 | W 10 | SSW 14 |
22 | 66 | 70 | 82 | 18 | — | 37 | 36 | 15 | 51 | 49 | 14 | 47 | 12 | 55 | 28 | 38 | 113 | 157 | 9 | 71 | |
Wind waves Height (m) Direction Period (s) | — | WNW 7 | — | — | WNW 8 | WNW 7 | WNW 7 | WNW 7 | WNW 7 | WNW 6 | WNW 6 | WNW 7 | — | WNW 8 | — | — | — | — | — | WNW 8 | — |
— | 50 | — | — | 128 | 202 | 117 | 154 | 229 | 130 | 155 | 186 | — | 142 | — | — | — | — | — | 50 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 47 | 74 | 3 | 3 | 102 | 3 | 3 | 101 | 3 | 102 | 101 | 3 | 3 | 74 | 3 | 3 | 47 | 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.











