Surf Forecasts:
Blacks Beach surf forecast from 17 Aug 2026:
- Best quality surf: Monday 17 Aug, 8AM (local time) - 3ft (0.9m), 14s period, SSW swell with glassy winds.
- Most powerful swell: Tuesday 18 Aug, 5AM (local time) - 3ft (0.9m), 16s period, SSW swell with 397 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 8AM (local time) - 3ft (0.9m), 14s period with SSW 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 Monday (Aug 17) at 8AM. The primary swell is predicted to be 0.9m and 14s period with a secondary swell of 0.7m and 6s. 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 0.9m 16s and forecast to arrive on Tuesday (Aug 18) at 5AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 10s period and expected on Monday (Aug 17) at 2PM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Mon 17th Aug) | 3ft (0.9m) 14s |
| Best Surf | 8AM (Mon 17th Aug) | 3ft (0.9m) 14s |
| Most Powerful | 5AM (Tue 18th Aug) | 3ft (0.9m) 16s |
Table - best surf conditions forecast for Blacks Beach over the next 16 days.
The Lowdown
G'day, Rusty here. Look, I've gotta be straight with you—this stretch is looking pretty grim for a while. We're staring down a long dry spell with hardly anything worth paddling out for. Let's break it down.
For the next week and a half, from Monday the 17th of August right through to Thursday the 27th of August, it's a total write-off. The swell is tiny, mostly around 2ft to 3ft out of the SSW or SW, with periods that are a mixed bag—some short, some long. The wind is almost always onshore or cross-onshore, keeping things choppy and messy. The combined wave energy is weak to moderate at best (values between 180 and 477), and the surf reports are all "poor" or "marginal." There's a whole lot of nothing happening.
Now, after that long gap, we finally get a glimmer on Thursday the 27th of August. The morning at Blacks Beach shows glassy conditions with a light S wind at 3 mph, and the swell is 2ft from the SW with a period of 14 seconds. The combined energy is 285, which is still on the lower side, but that glassy wind is a massive positive. It's not going to be big, but it'll be clean. For a short window, it's the best we've got.
Then, another gap until Sunday the 30th of August. That morning offers the standout moment of the entire outlook. The wind goes calm—dead flat—making it glassy as can be. The swell is 3ft from the SSW with a 15-second period, giving it a long-period groundswell feel, and the combined energy reads 433, which is moderate. The direction is a bit off from the optimum WNW, but with that glassy surface and the consistent nature of Blacks Beach, it's the one session worth circling on your calendar. Keep in mind, this is a consistent spot, so when it's on, it's on. But don't expect much else—the rest of the month is a bust.
Rusty.
Short Range ForecastMostly dry. Warm (max 24°C on Wed morning, min 19°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 25°C on Fri afternoon, min 22°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | ||||||||||||||
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) | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 16 | SSW 17 | SSW 15 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SW 18 | SSW 14 | SSW 15 |
Wave Graph  | |||||||||||||||||||
 kJ | 367 | 367 | 264 | 316 | 232 | 243 | 339 | 382 | 387 | 242 | 236 | 236 | 170 | 156 | 137 | 98 | 90 | 239 | 222 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | cross-on | on | on | glassy | on | on | glassy | cross-on | cross-on | glassy | cross-on | on | glassy | on | on | glassy |
High Tide | 00:31AM1.27m | 1:01PM1.54m | 1:34AM1.04m | 1:42PM1.49m | 3:28AM0.88m | 2:37PM1.45m | 3:54PM1.43m | 8:26AM1.03m | 5:14PM1.47m | 8:32AM1.09m | 6:16PM1.55m | ||||||||
Low Tide | 6:27AM0.42m | 7:47PM0.45m | 6:50AM0.62m | 9:15PM0.47m | 7:07AM0.79m | 11:03PM0.41m | 00:25AM0.30m | 10:32AM1.01m | 1:16AM0.18m | 12:09PM0.97m | 1:53AM0.09m | ||||||||
 |  | | | | | | | | | | | | |  | | | |  | |
 | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — |
 | — | — | 7:31 | — | — | 7:30 | — | — | 7:30 | — | — | 7:29 | — | — | 7:27 | — | — | 7:25 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 22 | 22 | 21 | 23 | 23 | 22 | 24 | 24 | 22 | 24 | 24 | 22 | 24 | 25 | 23 | 25 | 25 | 24 |
Feels °C | 21 | 22 | 22 | 21 | 23 | 23 | 23 | 25 | 24 | 24 | 25 | 24 | 24 | 25 | 26 | 25 | 25 | 25 | 26 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 14 | SSW 14 | W 6 | W 7 | W 7 | SSW 15 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 14 | SSW 15 |
| kJ | 367 | 367 | 264 | 58 | 70 | 56 | 339 | 382 | 387 | 242 | 236 | 236 | 170 | 156 | 137 | 98 | 90 | 239 | 222 |
Swell 2 Height (m) Direction Period (s) | W 5 | W 6 | SSW 18 | SSW 14 | SSW 16 | SSW 17 | W 6 | W 7 | W 7 | W 5 | W 6 | W 6 | W 7 | SW 18 | W 6 | W 6 | W 6 | WNW 6 | W 10 |
| kJ | 27 | 34 | 32 | 316 | 232 | 243 | 49 | 79 | 52 | 19 | 18 | 18 | 14 | 81 | 12 | 6 | 7 | 14 | 49 |
Swell 3 Height (m) Direction Period (s) | S 10 | S 10 | S 10 | S 9 | SSW 13 | SSW 13 | S 9 | SW 20 | S 8 | SW 18 | SW 19 | WNW 13 | WNW 12 | W 6 | SSW 16 | SW 17 | SW 18 | SW 18 | SW 19 |
| kJ | 8 | 8 | 7 | 7 | 114 | 98 | 6 | 16 | 1 | 50 | 56 | 16 | 27 | 12 | 51 | 47 | 83 | 113 | 58 |
Wind waves Height (m) Direction Period (s) | — | — | W 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 46 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 26 | 26 | 27 | 8 | 26 | 26 | 0 | 26 | 27 | 0 | 27 | 206 | 0 | 145 | 27 | 0 | 27 | 27 | 0 |
Best forecast wave conditions in San Diego County | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.
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