Surf Forecasts:
Blacks Beach surf forecast from 21 Aug 2026:
- Best quality surf: Thursday 27 Aug, 2AM (local time) - 5ft (1.6m), 14s period, SSW swell with glassy winds.
- Most powerful swell: Thursday 27 Aug, 2PM (local time) - 5ft (1.6m), 14s period, SSW swell with 988 kJ wave energy.
- Next surfable swell (1★+): Friday 21 Aug, 5AM (local time) - 2.5ft (0.7m), 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 Friday (Aug 21) at 5AM. The primary swell is predicted to be 0.7m and 14s period with a secondary swell of 0.5m 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 1.6m 14s and forecast to arrive on Thursday (Aug 27) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 13s period and expected on Wednesday (Aug 26) at 8PM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Fri 21st Aug) | 2.5ft (0.7m) 14s |
| Best Surf | 2AM (Thu 27th Aug) | 5ft (1.6m) 14s |
| Most Powerful | 2PM (Thu 27th Aug) | 5ft (1.6m) 14s |
Table - best surf conditions forecast for Blacks Beach over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s break down what’s coming for the next couple of weeks.
Honestly, the first week and a half is pretty flat and frustrating. There’s a lot of small, wind-affected surf, and nothing that’ll get your heart racing. You’ll see plenty of “marginal” and “poor” reports. But there is one bright spot if you’re patient.
Blacks Beach is the only break showing up. The one to aim for is Friday, September 4th, in the morning. That’s the clear winner. Swell from the SW at about 3ft, with a long 17-second period, so it’s got some real energy and shape. The wind will be glassy and offshore, making for some silky clean waves. Combined energy sits at 521, a solid moderate push. This is your best bet—good quality, clean conditions, and just enough size for advanced surfers. Water temp is pretty normal for the time of year.
Everything else is a grind. From late August through early September, you’re dealing with tiny waves (2ft to 5ft), a lot of cross-onshore breeze, and choppy, messy conditions. There’s a long stretch of nothing worth paddling out for. The few times the swell shows up, the wind ruins it.
So, pencil in Friday the 4th morning. That’s the one. The rest is mostly watching the horizon and waiting.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Sun morning, min 21°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Mon morning, min 22°C on Tue night). Wind will be generally light. | ||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | ||||||||||||||
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 13 | SSW 13 | SW 17 | SW 18 | SSW 14 | SSW 15 | SW 19 | SW 18 | SSW 14 | SW 18 | SW 17 | SW 17 | SW 16 | SW 16 | W 7 | SW 16 | SSW 16 | SSW 14 |
Wave Graph  | |||||||||||||||||||
 kJ | 170 | 156 | 137 | 98 | 90 | 239 | 222 | 224 | 197 | 273 | 194 | 177 | 330 | 264 | 208 | 166 | 157 | 392 | 953 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | on | glassy | on | on | glassy | on | on | cross-on | on | on | cross-on | on | cross-on | cross | cross-on | cross-on | glassy |
High Tide | 8:26AM1.03m | 5:14PM1.47m | 8:32AM1.09m | 6:16PM1.55m | 8:46AM1.14m | 7:02PM1.65m | 9:01AM1.19m | 7:40PM1.74m | 9:17AM1.24m | 8:14PM1.81m | 9:35AM1.31m | 8:46PM1.84m | |||||||
Low Tide | 00:25AM0.30m | 10:32AM1.01m | 1:16AM0.18m | 12:09PM0.97m | 1:53AM0.09m | 12:58PM0.88m | 2:23AM0.01m | 1:35PM0.78m | 2:50AM-0.04m | 2:08PM0.68m | 3:14AM-0.07m | 2:40PM0.58m | 3:38AM-0.08m | ||||||
 |  |  |  | | | | | | | | | | | | | | | | |
 | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — |
 | — | — | 7:27 | — | — | 7:25 | — | — | 7:24 | — | — | 7:23 | — | — | 7:22 | — | — | 7:21 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 24 | 24 | 22 | 25 | 25 | 23 | 26 | 26 | 24 | 26 | 26 | 24 | 26 | 26 | 24 | 25 | 24 | 23 |
Feels °C | 25 | 25 | 25 | 24 | 26 | 25 | 24 | 27 | 26 | 25 | 26 | 26 | 25 | 25 | 26 | 26 | 25 | 24 | 24 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 13 | SSW 13 | SSW 13 | W 6 | SSW 14 | SSW 15 | W 6 | SSW 13 | SSW 14 | W 6 | SW 17 | SW 17 | W 7 | S 13 | W 7 | S 13 | S 13 | SSW 14 |
| kJ | 170 | 156 | 137 | 98 | 31 | 239 | 222 | 40 | 135 | 273 | 38 | 177 | 330 | 94 | 219 | 166 | 772 | 563 | 953 |
Swell 2 Height (m) Direction Period (s) | W 6 | W 6 | W 6 | W 6 | SSW 13 | W 6 | W 6 | SSW 13 | SW 18 | W 5 | SW 18 | SSW 13 | S 13 | SW 16 | SW 16 | S 14 | W 7 | W 7 | W 7 |
| kJ | 16 | 18 | 20 | 10 | 90 | 28 | 24 | 98 | 197 | 27 | 194 | 93 | 126 | 264 | 208 | 377 | 134 | 109 | 106 |
Swell 3 Height (m) Direction Period (s) | WNW 12 | SW 18 | SSW 16 | SW 17 | SW 18 | SW 19 | SW 19 | SW 19 | S 16 | SW 18 | SSW 12 | S 15 | SSE 9 | S 13 | S 16 | S 11 | SW 16 | SSW 16 | W 13 |
| kJ | 28 | 81 | 51 | 77 | 82 | 57 | 58 | 224 | 45 | 199 | 87 | 38 | 9 | 128 | 46 | 125 | 157 | 392 | 31 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | W 6 | — | — | WNW 6 | WNW 6 | — | W 7 | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | 38 | — | — | 50 | 56 | — | 97 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 27 | 27 | 0 | 27 | 26 | 0 | 26 | 27 | 26 | 26 | 26 | 2 | 26 | 205 | 5 | 5 | 5 | 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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