
Surf Forecasts:
Blacks Beach surf forecast from 11 Aug 2026:
- Best quality surf: Tuesday 11 Aug, 5AM (local time) - 1.5ft (0.5m), 19s period, SW swell with glassy winds.
- Most powerful swell: Saturday 15 Aug, 2AM (local time) - 4.5ft (1.3m), 17s period, SSW swell with 921 kJ wave energy.
- Next surfable swell (1★+): Tuesday 11 Aug, 5AM (local time) - 1.5ft (0.5m), 19s period with SW swell.
Best Forecast Surf Conditions for Blacks Beach this week:
The surf forecast for Blacks Beach over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 11) at 5AM. The primary swell is predicted to be 0.5m and 19s period with a secondary swell of 0.6m and 13s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Blacks Beach in the next 16 days are 1.3m 17s and forecast to arrive on Saturday (Aug 15) 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 0.5m 12s period and expected on Wednesday (Aug 12) at 8PM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Tue 11th Aug) | 1.5ft (0.5m) 19s |
| Best Surf | 5AM (Tue 11th Aug) | 1.5ft (0.5m) 19s |
| Most Powerful | 2AM (Sat 15th Aug) | 4.5ft (1.3m) 17s |
Table - best surf conditions forecast for Blacks Beach over the next 16 days.
The Lowdown
Aight folks, Rusty here. Let’s be straight with you—this 16-day run for Blacks Beach (San Diego) is a rough one. We’ve got a lot of small, weak swell with persistent cross-onshore or onshore wind, and that’s not a recipe for good waves. The water is sitting at 76°, which is much warmer than normal for this time of year, a solid 8° above the long-term average.
The first decent look doesn’t come until Thursday morning, August 13th, with a small 2ft SW swell and a period of 16 seconds. The wind goes light offshore from the WSW, which is a major positive and will clean things up. The combined swell energy is moderate at 278, but it’s still a marginal day with questionable tide conditions.
Friday morning, August 14th, sees a similar story: a 2ft SSW swell at 18 seconds, with a light offshore wind. The energy jumps to moderate (547), but the wave comment says the same thing—marginal. Saturday, August 15th, looks a touch better with a 3ft SSW swell at 16 seconds, building to 4ft in the afternoon. The wind holds offshore from the WNW, keeping it clean. The energy is now solidly moderate, hitting 634 in the morning and 706 in the afternoon. Still, the forecast calls it marginal due to tide.
If you’re desperate, the standout in this entire window is the Saturday afternoon session. The swell is small but has some push with a 4ft SSW swell, long 16-second period, and the offshore wind will groom it. Blacks is an exposed beach-and-reef setup, so that long-period groundswell will offer some shape, but it might get a bit straight at times. Crowds are often here, so expect company.
After that, the surf fades back into the doldrums. The second week is a mix of 1ft to 3ft swell with moderate cross-onshore wind and low energy (175 to 505). There’s nothing worth chasing; even the consistent breaks aren’t lining up.
Bottom line: Saturday afternoon, August 15th, is the only real chance for a surf. It’s not firing, but it’s the best we’ve got.
Rusty.
Short Range ForecastSome drizzle, heaviest during Tue morning. Warm (max 24°C on Tue morning, min 21°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 22°C on Sun morning, min 19°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Mon 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | ||||||||||||||
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 20 | SW 19 | SSW 13 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SW 15 | SW 14 | SW 14 |
Wave Graph | ||||||||||||||||||||
186 | 184 | 129 | 319 | 316 | 230 | 264 | 306 | 255 | 353 | 276 | 292 | 404 | 921 | 417 | 683 | 666 | 544 | 482 | 482 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | on | glassy | on | on | glassy | on | on | cross-on | on | on | cross-on | on | on | cross-on | on | on | cross-on |
High Tide | 7:56PM2.09m | 9:39AM1.30m | 8:45PM2.12m | 10:12AM1.39m | 9:31PM2.07m | 10:44AM1.46m | 10:14PM1.94m | 11:17AM1.52m | 10:58PM1.76m | 11:51AM1.56m | 11:43PM1.52m | 12:24PM1.56m | 00:31AM1.27m | |||||||
Low Tide | 3:12AM-0.36m | 2:30PM0.57m | 3:50AM-0.36m | 3:19PM0.47m | 4:25AM-0.28m | 4:07PM0.40m | 4:58AM-0.16m | 4:55PM0.37m | 5:30AM0.02m | 5:45PM0.38m | 5:59AM0.22m | 6:41PM0.41m | ||||||||
— | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | |
7:38 | — | — | 7:37 | — | — | 7:37 | — | — | 7:36 | — | — | 7:35 | — | — | 7:34 | — | — | 7:32 | — | |
mm | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 22 | 24 | 23 | 22 | 23 | 23 | 21 | 21 | 21 | 20 | 21 | 21 | 20 | 21 | 21 | 21 | 22 | 22 | 21 |
Feels °C | 24 | 23 | 24 | 23 | 23 | 23 | 23 | 22 | 23 | 21 | 21 | 21 | 20 | 20 | 21 | 21 | 21 | 22 | 21 | 21 |
Swell 1 Height (m) Direction Period (s) | SSW 13 | SSW 13 | SSW 13 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SW 15 | SW 14 | SW 14 |
139 | 137 | 129 | 319 | 316 | 230 | 264 | 306 | 255 | 353 | 276 | 255 | 404 | 921 | 417 | 683 | 666 | 544 | 482 | 482 | |
Swell 2 Height (m) Direction Period (s) | SW 20 | SW 19 | SW 18 | SSW 12 | SSW 12 | SSW 12 | SW 13 | S 12 | S 11 | S 11 | S 10 | SSW 18 | SW 14 | W 4 | SW 14 | S 11 | S 11 | S 11 | S 10 | S 10 |
186 | 184 | 114 | 49 | 56 | 47 | 61 | 47 | 60 | 59 | 52 | 292 | 251 | 9 | 191 | 21 | 20 | 20 | 8 | 8 | |
Swell 3 Height (m) Direction Period (s) | SW 16 | SW 14 | SW 14 | SW 15 | SW 13 | S 13 | S 12 | SSW 11 | SW 12 | SSW 21 | SSW 20 | S 11 | WNW 12 | S 12 | W 5 | W 11 | W 13 | W 10 | W 11 | W 10 |
39 | 33 | 74 | 75 | 45 | 50 | 47 | 22 | 23 | 44 | 149 | 21 | 14 | 44 | 12 | 10 | 13 | 8 | 9 | 8 | |
Wind waves Height (m) Direction Period (s) | W 4 | — | W 8 | WNW 12 | — | — | W 10 | W 9 | — | W 8 | — | — | SW 11 | — | WNW 5 | W 5 | W 5 | W 5 | WNW 5 | WNW 5 |
1 | — | 5 | 28 | — | — | 17 | 6 | — | 12 | — | — | 96 | — | 14 | 13 | 17 | 20 | 28 | 37 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 27 | 5 | 27 | 26 | 0 | 27 | 76 | 0 | 27 | 27 | 11 | 27 | 27 | 11 | 26 | 27 | 26 | 26 | 27 | 26 |
Best forecast wave conditions in San Diego County | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
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Information about the Blacks Beach Surf forecast
The above surf forecast table for Blacks Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Blacks Beach can be found by selecting the local surf guide option on the grey menu. Our Blacks Beach 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 (Blacks Beach) 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 Blacks Beach 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.
Blacks Beach is 13 km (8 miles) from the city of San Diego. If you plan a vacation in San Diego County, look for hotels and other accommodation in San Diego. San Diego has rooms for a wide range of budgets as well as car hire and transport links.











