Deadman's Surf Break

Lat Long: 37.79° N 122.50° W

Deadman's Surf Forecast and Surf Report

Issued: 4 am 21 Aug 2026 (local time)

Forecast update in  hr  min

Today's Deadman's sea temperature is
18.2° C
3.8° 

Deadman's surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Deadman's surf forecast from 21 Aug 2026:

  • Best quality surf: Sunday 23 Aug, 8AM (local time) - 4ft (1.2m), 7s period, WNW swell with cross-offshore winds.
  • Most powerful swell: Friday 28 Aug, 8AM (local time) - 6.5ft (2.0m), 8s period, WNW swell with 527 kJ wave energy.
  • Next surfable swell (1★+): Sunday 23 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 Sunday (Aug 23) 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 2.0m 8s and forecast to arrive on Friday (Aug 28) at 8AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 16s period and expected on Wednesday (Aug 26) at 5PM.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Sun 23rd Aug)4ft (1.2m) 7s
Best Surf 8AM (Sun 23rd Aug)4ft (1.2m) 7s
Most Powerful 8AM (Fri 28th Aug)6.5ft (2.0m) 8s

Table - best surf conditions forecast for Deadman's over the next 16 days.


The Lowdown

Alright, Rusty here. Let's take a look at what's on the table for the next couple of weeks.

Honestly, it's a tough stretch for Deadman's. This is a beach and reef setup that needs a clean window, and we're just not getting one for a long while. The water is sitting at 65°F which is a staggering 7°F warmer than usual for this time of year – that’s a very unusual anomaly, making for a weirdly warm wade.

The first week is pretty much a write-off. From Friday the 21st right through to the end of that week, we're dealing with a constant battle of cross-onshore winds and choppy, messy conditions. Swell is small, mostly around 2 ft to 5 ft, but the wind just ruins any chance of a decent wave. The combined energy is weak to moderate (245 to 338), so there's no grunt in the water to overcome the chop. Saturday the 22nd afternoon sees a spike to 5 ft, but it's a short-period windswell (6 seconds) with a moderate cross-onshore, making it a total washout. Sunday the 23rd morning has a 19-second period groundswell (251 energy), but it's only 1 ft and cross-shore; it's a tease. Even the "marginal" calls (like Monday the 24th morning) are still cross-shore with slight chop, nothing you'd paddle out for.

The second week starts to look a bit more promising, but it's not without its problems. The morning of Friday the 28th of August shows a bigger 7 ft swell from the WNW with a period of 8 seconds and a gentle cross-shore. The combined energy here jumps to 1057, which is strong. That's a serious amount of water moving around. However, the report flags it as "marginal," likely due to the wind still being a bit messy. For a spot like Deadman's, 7 ft is getting into expert-only territory, and with that cross-shore, it might be a bit of a battle. Saturday the 29th morning drops back to 3 ft but with a nice 18-second SW groundswell (856 energy) and light cross-shore winds. That's a long period which is fantastic for a point, but at a beach and reef setup, it might break a little too straight. Still, the conditions are clean, so it's the best-looking window in the whole forecast.

The absolute standout is the morning of Tuesday the 1st of September. We get a 5 ft NNW swell, light cross-offshore winds from the SSW at 3 mph, and the report says "clean." The combined energy is 413, which is moderate. That light cross-offshore is a major positive – it will groom the waves beautifully. This is the day to circle. The following Wednesday morning (2nd September) also has clean, light cross-shore winds on a 4 ft swell, but it's a notch down.

The gap between the dismal first week and the better second week is a solid 7 days of no real recommendations. The long-range stuff (first week of Sept) is promising but less certain. The swell directions are mostly WNW, which is a decent match for the break's optimum NW.

So, if you're patient, the morning of September 1st is your best bet. It's the only time the stars align for a truly clean session. The 28th of August morning has the size and power, but the wind is a question mark. For the rest, it's a waiting game.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 20°C on Sat afternoon, min 13°C on Sun night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Very mild (max 19°C on Wed afternoon, min 13°C on Mon morning). Wind will be generally light.

Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
1
0
1
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.5
SW
14
0.5
SW
13
0.5
SW
13
0.5
W
10
1.5
WNW
6
1.5
WNW
7
1.1
WNW
7
1.1
WNW
8
1.1
WNW
8
0.5
SW
18
0.5
SW
17
0.5
SW
17
0.6
SW
16
0.5
SW
16
0.5
SW
16
0.6
SW
16
1.5
WNW
6
1.6
WNW
7
1.2
WNW
7
1.5
WNW
7
1.7
WNW
8
Wave Graph
Metric surfscale
Energy kJ
93
85
85
50
170
186
130
138
135
157
148
145
219
130
124
161
170
222
129
210
345
Wind (km/h)
15
W
25
W
10
WSW
10
SW
25
W
10
W
10
SW
20
WSW
15
WSW
15
WSW
20
WSW
10
W
10
W
25
W
10
WSW
10
SW
25
W
10
W
10
WSW
25
W
10
W
Wind State
cross-on
cross-on
cross-on
cross
cross-on
cross-on
cross
cross
cross
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross-on
cross-on
cross
cross-on
cross-on
High Tide
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
11:31AM1.48m
10:18PM1.82m
11:53AM1.52m
10:59PM1.78m
Low Tide
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
4:29PM0.75m
5:02AM-0.07m
5:05PM0.65m
part cloud
part cloud
clear
clear
clear
clear
part cloud
clear
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:30
6:31
6:31
6:31
6:33
6:33
6:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:54
7:53
7:52
7:51
7:49
7:47
7:46
 mm
Temp °C
15
17
15
16
20
18
16
17
15
15
17
15
15
17
15
16
19
16
16
18
16
Feels °C
13
14
12
15
16
16
15
14
13
13
14
13
14
13
13
15
15
14
15
14
13
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
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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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