Surf Forecasts:
Blacks Beach surf forecast from 31 Aug 2026:
- Best quality surf: Thursday 3 Sep, 5AM (local time) - 2.5ft (0.7m), 18s period, SW swell with glassy winds.
- Most powerful swell: Friday 4 Sep, 11PM (local time) - 4.5ft (1.3m), 16s period, SSW swell with 798 kJ wave energy.
- Next surfable swell (1★+): Thursday 3 Sep, 5AM (local time) - 2.5ft (0.7m), 18s 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 Thursday (Sep 03) at 5AM. The primary swell is predicted to be 0.7m and 18s period with a secondary swell of 1.1m and 7s. Another secondary swell of 0.9m and 11s is also forecast. 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 16s and forecast to arrive on Friday (Sep 04) at 11PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 15s period and expected on Monday (Sep 07) at 5AM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Thu 3rd Sep) | 2.5ft (0.7m) 18s |
| Best Surf | 5AM (Thu 3rd Sep) | 2.5ft (0.7m) 18s |
| Most Powerful | 11PM (Fri 4th Sep) | 4.5ft (1.3m) 16s |
Table - best surf conditions forecast for Blacks Beach over the next 16 days.
The Lowdown
Alright, this is Rusty. Let’s break down what Blacks Beach is serving up for the next couple of weeks.
I gotta be straight with you – it starts out pretty flat and ugly. The first few days are a total washout. The swell is tiny, and the conditions are just plain poor. You'll see a little energy show up, but the wave comment keeps saying "poor surf conditions" for the first week.
One thing that stands out is the water. It’s 76°, which is a whopping 8° warmer than normal for this time of year. That’s very unusual – like swimming in a warm bath.
Things get a *tiny* bit more interesting as we roll into the first days of September. The combined energy starts climbing into the hundreds, like on Wednesday afternoon the 2nd we get 444 of energy from a 3ft SSW swell. But it’s all still marked as "marginal" – the wind is onshore and the quality just isn’t there for a proper session.
If there’s one window worth circling, it’s Friday the 4th and Saturday the 5th of September. We get a bump in size, with 3ft to 4ft of SSW groundswell (periods of 16-17 seconds). The wind on Friday afternoon goes light offshore from the WSW, and Saturday morning looks clean with light WNW offshore breezes. The combined energy peaks at 764 on Friday afternoon. This is the best on offer – the waves will have some punch and shape, and with the light winds it should be glassy. It’s an exposed spot so it’ll grab that swell, but just know the crowds are often there.
After that weekend, it fades fast. By Sunday the 6th, it’s back to small, messy surf, and the second week is a real struggle. Swell stays small, mostly under 3ft, and the wind is all over the place. There are a couple of clean moments with cross-offshore winds, but the energy is just too weak to surf properly. The second week is basically a long lull.
So, bottom line: Friday the 4th and Saturday the 5th of September are your standout days. A clean, fun SSW groundswell with light offshore winds. The rest of the 16 days is mostly a waiting game.
Keep an eye on it – forecasts can change.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Mon morning, min 20°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 23°C on Sat morning, min 20°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | |||||||||||||||
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) | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SW 16 | SSW 13 | SW 17 | SSW 11 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SW 14 | W 10 | WNW 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 257 | 161 | 156 | 116 | 114 | 92 | 211 | 242 | 302 | 196 | 547 | 651 | 587 | 717 | 620 | 512 | 506 | 367 | 251 | 31 | 34 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | on | cross-on | cross-on | on | on | cross-on | on | on | cross-on | cross | on | glassy | on | on | cross-on | on | cross-off | cross-off |
High Tide | 11:32AM1.65m | 11:54PM1.27m | 12:05PM1.67m | 00:55AM1.06m | 12:47PM1.67m | 2:36AM0.89m | 1:44PM1.64m | 3:09PM1.63m | 7:22AM1.02m | 4:44PM1.68m | 7:45AM1.14m | 6:01PM1.78m | |||||||||
Low Tide | 5:59PM0.30m | 5:35AM0.43m | 6:59PM0.30m | 5:59AM0.60m | 8:20PM0.30m | 6:22AM0.75m | 10:05PM0.25m | 11:38PM0.12m | 9:52AM0.98m | 00:42AM-0.03m | 11:47AM0.90m | 1:30AM-0.14m | |||||||||
 | |  | | | | | | | | | |  | | | | |  |  |  |  | |
 | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:26 | — | — |
 | — | 7:15 | — | — | 7:14 | — | — | 7:13 | — | — | 7:10 | — | — | 7:09 | — | — | 7:08 | — | — | 7:07 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 8 | 5 |
Temp °C | 23 | 23 | 21 | 23 | 22 | 21 | 22 | 22 | 21 | 22 | 22 | 21 | 22 | 22 | 21 | 23 | 23 | 23 | 24 | 23 | 24 |
Feels °C | 23 | 22 | 20 | 23 | 19 | 20 | 21 | 20 | 20 | 21 | 20 | 22 | 21 | 21 | 22 | 24 | 23 | 24 | 23 | 25 | 25 |
Swell 1 Height (m) Direction Period (s) | S 13 | S 12 | S 11 | S 11 | S 10 | W 5 | W 6 | SSW 13 | W 6 | WNW 7 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | S 13 | S 14 | S 14 | S 14 | S 15 | S 15 |
| kJ | 255 | 228 | 151 | 114 | 106 | 29 | 33 | 242 | 76 | 73 | 547 | 651 | 587 | 717 | 620 | 440 | 931 | 1315 | 1772 | 2211 | 3093 |
Swell 2 Height (m) Direction Period (s) | W 7 | SSW 14 | SSW 13 | W 6 | SSW 13 | SSW 13 | SW 16 | SW 16 | SSW 12 | SSW 11 | W 7 | W 6 | W 7 | W 6 | S 14 | SSW 16 | SSW 16 | SSW 15 | SW 14 | W 10 | WNW 10 |
| kJ | 56 | 161 | 156 | 23 | 114 | 92 | 211 | 129 | 196 | 176 | 70 | 47 | 74 | 47 | 405 | 512 | 506 | 367 | 251 | 31 | 34 |
Swell 3 Height (m) Direction Period (s) | SSW 14 | SW 19 | W 5 | SSW 13 | SW 18 | S 9 | SSW 12 | SSW 20 | SW 17 | SW 16 | SSW 10 | SSW 11 | SW 10 | SSE 15 | W 5 | W 5 | WNW 5 | W 10 | — | WNW 12 | — |
| kJ | 257 | 56 | 19 | 116 | 80 | 41 | 107 | 41 | 302 | 196 | 55 | 76 | 54 | 231 | 18 | 13 | 9 | 50 | — | 14 | — |
Wind waves Height (m) Direction Period (s) | — | W 6 | — | — | W 6 | WNW 5 | — | W 6 | WNW 6 | — | — | — | — | — | — | — | — | — | — | WNW 6 | — |
| kJ | — | 36 | — | — | 32 | 42 | — | 32 | 82 | — | — | — | — | — | — | — | — | — | — | 12 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 27 | 27 | 23 | 26 | 27 | 13 | 26 | 27 | 2 | 26 | 291 | 13 | 76 | 27 | 0 | 26 | 26 | 11 | 11 | 0 | 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.
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