Surf Forecasts:
Blacks Beach surf forecast from 10 Sep 2026:
- Best quality surf: Friday 11 Sep, 8AM (local time) - 3.5ft (1.0m), 16s period, SW swell with cross-offshore winds.
- Most powerful swell: Thursday 10 Sep, 8AM (local time) - 3.5ft (1.0m), 17s period, SW swell with 553 kJ wave energy.
- Next surfable swell (1★+): Friday 11 Sep, 8AM (local time) - 3.5ft (1.0m), 16s 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 Friday (Sep 11) at 8AM. The primary swell is predicted to be 1.0m and 16s period with a secondary swell of 0.8m and 7s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Blacks Beach in the next 16 days are 1.0m 17s and forecast to arrive on Thursday (Sep 10) 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 0.5m 12s period and expected on Thursday (Sep 10) at 8AM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Fri 11th Sep) | 3.5ft (1.0m) 16s |
| Best Surf | 8AM (Fri 11th Sep) | 3.5ft (1.0m) 16s |
| Most Powerful | 8AM (Thu 10th Sep) | 3.5ft (1.0m) 17s |
Table - best surf conditions forecast for Blacks Beach over the next 16 days.
The Lowdown
Alright, folks, Rusty here. Let’s talk about what’s happening on the water for this stretch.
Our main spot is Blacks Beach. It’s an exposed break, so it catches everything that rolls in. The water temp is right where it should be for the season, nothing wild.
The first usable day is Thursday, September 10th. We’ve got a 3ft swell from the southwest with a 17-second period, giving the water 561 units of energy. That’s moderate power, but the wind is a cross-onshore, making it choppy and messy. It’s a marginal day, not worth a paddle. Friday the 11th is the same story – a cross-shore wind adds a chop to a 3ft SW swell. The energy drops a bit, but it’s still rough.
Saturday the 12th and Sunday the 13th are a washout. The swell is tiny, 3ft to 4ft, but the wind is onshore or cross-onshore, and the period is short. The energy is weak, and the conditions are poor. Skip it.
Monday the 14th through Wednesday the 16th is a flat patch. The swell is tiny, maybe 2ft, with onshore winds. The energy is low, and the water is a mess. Nothing doing.
Now, here’s the good part. Thursday the 17th is still a bit average, but the wind starts to shift. By Friday the 18th, we get a glimmer. A 2ft to 2ft swell from the southwest with a 19-second period. The energy jumps to 571 units. The wind is light and cross-onshore, which is better. The surf is marginal, but that long period means there’s shape and power. The sets will be clean and well-spaced.
Then, Saturday the 19th is a hidden gem. The wind turns light and onshore, but the swell is a clean 3ft from the southwest with an 18-second period. The energy is 551 units, and the conditions are glassy. This is the one to watch. It’s a small, clean, long-period groundswell that will peel nicely. Crowds are often here, so don’t expect solitude.
Sunday the 20th is the standout. The swell picks up to 3ft from the southwest with an 18-second period, and the energy hits 732 units. The wind is a gentle cross-shore, keeping the surface clean. This is a beautiful window. The sets will be consistent, the waves will have proper shape, and the energy is solid. It’s the best day of the whole outlook.
The following week, up to the 25th, is a slow fade. The swell stays around 3ft, but the period drops and the wind picks up. Cross-onshore winds and choppy conditions return. The energy drops, and the scores are poor.
So, the game plan: skip the first week. It’s a mess. Wait for the 18th to the 20th, especially Saturday the 19th and Sunday the 20th. Sunday is the best of the lot – clean, consistent, and with a nice long-period swell. This is a classic Blacks Beach session.
Rusty out.
Short Range ForecastLight rain (total 2mm), mostly falling on Wed night. Warm (max 26°C on Wed night, min 21°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 22°C on Sun morning, min 20°C on Sat night). Wind will be generally light. | ||||||||||||||||||
Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | ||||||||||||||
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 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | W 7 | W 8 | W 9 | W 8 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 |
Wave Graph  | |||||||||||||||||||
 kJ | 419 | 547 | 496 | 483 | 471 | 360 | 309 | 248 | 208 | 158 | 159 | 135 | 270 | 177 | 192 | 188 | 161 | 157 | 157 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross | cross | cross-on | cross-on | on | on | cross-on | cross-on | cross-on | cross | cross | cross-on | cross | cross-on | cross-on | glassy |
High Tide | 8:38PM1.92m | 9:32AM1.58m | 9:21PM1.84m | 10:00AM1.66m | 10:03PM1.71m | 10:28AM1.70m | 10:44PM1.53m | 10:55AM1.70m | 11:28PM1.34m | 11:22AM1.67m | 00:17AM1.15m | 11:51AM1.60m | 1:23AM0.98m | ||||||
Low Tide | 3:17AM-0.14m | 3:15PM0.27m | 3:47AM-0.04m | 3:58PM0.20m | 4:15AM0.11m | 4:40PM0.16m | 4:41AM0.28m | 5:24PM0.18m | 5:04AM0.45m | 6:10PM0.23m | 5:24AM0.62m | 7:05PM0.30m | |||||||
 |  | |  | | | | | | | | | | | | | | | | |
 | — | 6:28 | — | — | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — | 6:31 | — | — | 6:31 | — | — |
 | — | — | 7:01 | — | — | 7:00 | — | — | 6:59 | — | — | 6:58 | — | — | 6:57 | — | — | 6:54 | — |
mm | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 26 | 24 | 24 | 24 | 23 | 22 | 22 | 20 | 22 | 22 | 21 | 22 | 22 | 21 | 21 | 22 | 20 |
Feels °C | 29 | 27 | 27 | 25 | 24 | 23 | 24 | 22 | 22 | 21 | 21 | 21 | 22 | 21 | 20 | 21 | 21 | 21 | 21 |
Swell 1 Height (m) Direction Period (s) | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | W 6 | W 6 | W 7 | W 7 | W 8 | W 9 | W 8 | W 10 | W 9 | W 9 | W 9 | W 8 |
| kJ | 419 | 547 | 496 | 483 | 471 | 360 | 309 | 49 | 47 | 86 | 159 | 135 | 270 | 177 | 183 | 97 | 102 | 76 | 48 |
Swell 2 Height (m) Direction Period (s) | SSW 12 | S 12 | W 6 | W 6 | W 7 | W 6 | W 6 | SW 14 | SW 14 | SW 14 | SSW 13 | SW 13 | SW 13 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 |
| kJ | 82 | 72 | 17 | 25 | 57 | 54 | 57 | 248 | 208 | 158 | 120 | 87 | 85 | 109 | 192 | 188 | 161 | 157 | 157 |
Swell 3 Height (m) Direction Period (s) | W 5 | W 5 | SSW 12 | SSW 11 | SSW 10 | S 10 | S 9 | S 10 | S 9 | S 9 | S 8 | SW 19 | SW 19 | SW 13 | SW 12 | SW 12 | SW 12 | S 20 | SSW 18 |
| kJ | 10 | 14 | 45 | 39 | 21 | 17 | 16 | 28 | 28 | 13 | 12 | 130 | 127 | 84 | 39 | 38 | 37 | 194 | 110 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 5 | 5 | 5 | 5 | 74 | 7 | 27 | 27 | 27 | 27 | 5 | 76 | 5 | 145 | 5 | 5 | 5 | 27 | 0 |
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.
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