Surf Forecasts:
Deadman's surf forecast from 19 Aug 2026:
- Most powerful swell: Thursday 20 Aug, 2AM (local time) - 5ft (1.5m), 8s period, WNW swell with 240 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 1.5m 8s 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 Wednesday (Aug 19) at 11AM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2AM (Thu 20th Aug) | 5ft (1.5m) 8s |
Table - best surf conditions forecast for Deadman's over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's get into it. The forecast is a bit of a mixed bag at Deadman's. We've got a long stretch of pretty average conditions ahead, but there is a light at the end of the tunnel if you're patient.
The pattern starts with a whole lot of nothing. From Wednesday the 19th of August right through to Tuesday the 25th, the surf is looking pretty poor. The swell is small and weak, with combined energy readings mostly in the 200s (207) and the wind is either cross or cross-onshore, creating a choppy, messy surface. It's a flat spell, so you might as well keep the board in the car and catch up on other things.
Then, things get interesting on Wednesday the 26th of August. The morning is our standout window. The swell picks up to 6 feet from the NW, with a combined energy of 737 – that's a solid push of moderate energy. The wind is a light cross-offshore from the SSW, which is going to groom the waves into clean, workable lines. This is the best the period has to offer. The water temp is about average for the time of year, so no surprises there.
After that, the consistency drops off again. The rest of the week and into the weekend sees more poor conditions with messy winds and smaller, weaker swells. There's a glimmer of hope on the morning of Wednesday the 2nd of September where we see a big 8-foot swell from the NW with a massive combined energy of 1633 – that's serious power. But it's rated as marginal, and the wind is light cross-shore, which could make it a tricky, powerful beast. That one's more for the experts only, and it's a long way out, so keep an eye on the updates.
So, bottom line: if you can get out on the morning of Wednesday the 26th of August, you'll be rewarded. The rest of the run is a waiting game.
Rusty.
Short Range ForecastMostly dry. Very mild (max 16°C on Wed morning, min 13°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 18°C on Mon afternoon, min 13°C on Sat morning). Wind will be generally light. | ||||||||||||||||||||
Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | |||||||||||||||
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 7 | WNW 8 | WNW 8 | NW 7 | W 12 | WNW 7 | SW 14 | SW 18 | WNW 6 | NW 6 | WNW 7 | WNW 8 | WNW 8 | WNW 8 | WNW 9 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 125 | 142 | 240 | 222 | 132 | 138 | 93 | 58 | 115 | 95 | 68 | 170 | 149 | 164 | 140 | 157 | 111 | 147 | 219 | 129 | 124 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross |
High Tide | 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 | 11:09AM1.45m | 9:35PM1.83m | ||||||||
Low Tide | 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 | 3:53PM0.85m | 4:32AM-0.06m | |||||||
 | |  | | | | | |  |  | | | | | | | | |  | | | |
 | 6:28 | — | — | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — | 6:31 | — | — | 6:31 | — | — | 6:33 | — | — |
 | — | 7:58 | — | — | 7:55 | — | — | 7:54 | — | — | 7:53 | — | — | 7:52 | — | — | 7:51 | — | — | 7:49 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 16 | 14 | 15 | 16 | 14 | 15 | 16 | 14 | 15 | 17 | 15 | 15 | 17 | 15 | 16 | 18 | 15 | 15 | 17 | 15 |
Feels °C | 15 | 13 | 12 | 14 | 12 | 12 | 13 | 13 | 11 | 14 | 15 | 13 | 14 | 15 | 13 | 14 | 15 | 13 | 13 | 15 | 13 |
Swell 1 Height (m) Direction Period (s) | WNW 7 | SW 15 | SW 15 | WNW 7 | W 12 | W 11 | W 11 | W 10 | SSW 13 | WNW 6 | WNW 10 | WNW 8 | WNW 8 | WNW 8 | WNW 9 | WNW 8 | WNW 8 | WNW 8 | WNW 7 | WNW 7 | WNW 7 |
| kJ | 125 | 223 | 183 | 120 | 132 | 85 | 83 | 56 | 68 | 58 | 33 | 170 | 149 | 164 | 140 | 96 | 69 | 66 | 40 | 40 | 37 |
Swell 2 Height (m) Direction Period (s) | SW 15 | W 12 | W 11 | W 12 | SSW 14 | SSW 14 | SW 14 | SSW 13 | WNW 10 | WNW 10 | SW 17 | SW 16 | SW 19 | SW 18 | SSW 15 | SSW 14 | SSW 14 | SW 17 | SW 16 | SW 16 | SW 16 |
| kJ | 217 | 74 | 93 | 134 | 136 | 138 | 93 | 68 | 35 | 33 | 74 | 63 | 130 | 116 | 85 | 120 | 120 | 147 | 219 | 129 | 124 |
Swell 3 Height (m) Direction Period (s) | W 13 | SW 21 | — | SSW 14 | WSW 19 | SW 20 | SW 18 | SW 18 | SW 17 | SW 13 | SW 13 | SSW 12 | SSW 16 | SW 12 | SW 18 | SW 18 | SW 18 | SSW 14 | SSW 13 | SSW 13 | SSW 13 |
| kJ | 82 | 18 | — | 129 | 36 | 15 | 51 | 49 | 47 | 44 | 43 | 14 | 49 | 38 | 113 | 157 | 111 | 71 | 68 | 68 | 55 |
Wind waves Height (m) Direction Period (s) | — | WNW 8 | WNW 8 | NW 7 | WNW 6 | WNW 7 | WNW 6 | WNW 5 | WNW 6 | NW 6 | WNW 7 | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 142 | 240 | 222 | 104 | 138 | 64 | 58 | 115 | 95 | 68 | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 3 | 102 | 3 | 3 | 101 | 3 | 3 | 102 | 3 | 3 | 102 | 3 | 3 | 119 | 3 | 3 | 119 | 3 | 3 | 47 | 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.
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