Surf Forecasts:
Blacks Beach surf forecast from 17 Jul 2026:
- Best quality surf: Monday 20 Jul, 2AM (local time) - 5ft (1.6m), 15s period, SSW swell with glassy winds.
- Most powerful swell: Monday 20 Jul, 8PM (local time) - 5ft (1.6m), 16s period, SSW swell with 1,261 kJ wave energy.
- Next surfable swell (1★+): Sunday 19 Jul, 2AM (local time) - 1.5ft (0.4m), 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 Sunday (Jul 19) at 2AM. The primary swell is predicted to be 0.4m and 16s period. 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 16s and forecast to arrive on Monday (Jul 20) at 8PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 13s period and expected on Thursday (Jul 23) at 5AM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Sun 19th Jul) | 1.5ft (0.4m) 16s |
| Best Surf | 2AM (Mon 20th Jul) | 5ft (1.6m) 15s |
| Most Powerful | 8PM (Mon 20th Jul) | 5ft (1.6m) 16s |
Table - best surf conditions forecast for Blacks Beach over the next 16 days.
The Lowdown
Alright, this is Rusty. Let’s look at what’s coming up for our local stretch.
We’ve got a long, quiet run ahead. From Friday July 17th through at least Wednesday the 22nd, it’s flat and messy. Persistent cross-onshore wind and tiny swell – only 2ft to 3ft – with weak combined swell energy (starting at 331, climbing to 414, then fading). Water temp is about average for the season. Honestly, it’s one of those periods where you’d be better off doing something else.
The first real hope shows up Thursday the 23rd, but it’s marginal. A short-period windswell (7 seconds) with combined energy of only 145, and still messy. Friday the 24th is a bit better with a long 24-second period and swell around 2ft to 2ft, but combined energy at 584 is just moderate, and the light cross-onshore wind keeps it from being clean. Not worth rushing out.
Saturday the 25th – now we’re talking. Swell jumps to 7ft to 7ft from the SSW, with a 16-second period (proper groundswell). Combined energy hits 2610 – strong wave energy. Wind is light from the SW at 6 mph, so there’s a slight cross-onshore ripple but nothing major. This is expert territory at Blacks Beach. That long period means powerful sets with longer waits between them. Not for the faint-hearted.
Sunday the 26th is the real standout. Swell drops to a more manageable 5ft to 3ft, still SSW groundswell, and the wind swings offshore from the West at 6 mph. That’s glassy, clean conditions. Combined energy is still strong at 1526. This is the best combo of size and quality in the whole 16-day window. Expect crowds – Blacks is “often” busy, and with a morning like this, it’ll be popular.
After that, the swell fades through Monday and Tuesday, still rideable but dropping. By Thursday the 30th, we’re back to flat and poor.
Bottom line: Sunday the 26th is your morning. Clean offshore wind, solid groundswell, and strong energy. Saturday the 25th is the power day, but only for experts.
- Rusty
Short Range ForecastMostly dry. Warm (max 23°C on Fri morning, min 20°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 25°C on Tue morning, min 20°C on Sun night). Wind will be generally light. | ||||||||||||||||||
Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 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) | SW 19 | SW 19 | SW 18 | SW 15 | SW 18 | SW 18 | SW 16 | SW 17 | SW 17 | SSW 15 | SSW 15 | SSW 15 | SSW 13 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 |
Wave Graph  | |||||||||||||||||||
 kJ | 175 | 181 | 103 | 137 | 366 | 379 | 91 | 414 | 567 | 1007 | 398 | 632 | 551 | 649 | 474 | 468 | 437 | 325 | 321 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross | cross | cross-on | cross-on | glassy | cross-on | on | glassy | on | on | glassy | on | on | cross-on | cross-on | cross-on | on |
High Tide | 11:13PM1.89m | 12:46PM1.38m | 00:02AM1.65m | 1:30PM1.42m | 00:55AM1.38m | 2:16PM1.45m | 2:00AM1.12m | 3:05PM1.48m | 3:37AM0.92m | 3:58PM1.50m | 5:57AM0.86m | 4:54PM1.53m | |||||||
Low Tide | 6:14AM-0.21m | 6:05PM0.57m | 6:52AM-0.02m | 7:12PM0.59m | 7:29AM0.19m | 8:31PM0.58m | 8:06AM0.41m | 10:06PM0.52m | 8:46AM0.60m | 11:41PM0.40m | 9:39AM0.76m | 00:51AM0.25m | |||||||
 |  | |  | | | | | | |  | | | | | | | | | |
 | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — |
 | — | — | 7:57 | — | — | 7:57 | — | — | 7:55 | — | — | 7:55 | — | — | 7:54 | — | — | 7:53 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 23 | 23 | 21 | 22 | 22 | 21 | 23 | 22 | 21 | 24 | 23 | 22 | 25 | 24 | 23 | 23 | 23 | 22 |
Feels °C | 22 | 22 | 22 | 21 | 22 | 22 | 22 | 23 | 21 | 22 | 24 | 22 | 22 | 24 | 22 | 23 | 23 | 23 | 23 |
Swell 1 Height (m) Direction Period (s) | W 8 | W 8 | W 8 | SW 15 | SW 18 | SW 18 | S 10 | SW 17 | S 12 | SSW 15 | S 12 | SSW 15 | SSW 13 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | S 14 | S 13 |
| kJ | 65 | 76 | 57 | 137 | 366 | 379 | 108 | 414 | 407 | 1007 | 336 | 632 | 551 | 649 | 474 | 468 | 437 | 598 | 495 |
Swell 2 Height (m) Direction Period (s) | SW 15 | SW 19 | SW 14 | W 8 | S 12 | S 11 | SW 16 | S 11 | SW 17 | WNW 15 | SSW 15 | S 11 | SSW 16 | SSW 10 | SSW 9 | SW 8 | S 16 | SSW 14 | W 6 |
| kJ | 106 | 181 | 103 | 32 | 98 | 94 | 91 | 143 | 567 | 43 | 398 | 242 | 447 | 137 | 130 | 55 | 239 | 325 | 74 |
Swell 3 Height (m) Direction Period (s) | SW 19 | SW 14 | SW 18 | S 11 | W 7 | W 7 | SW 13 | S 13 | WNW 15 | W 6 | W 5 | WNW 14 | WNW 14 | WNW 14 | SSE 16 | S 13 | SSW 8 | SW 7 | SSW 14 |
| kJ | 175 | 74 | 83 | 39 | 14 | 14 | 61 | 163 | 74 | 6 | 4 | 40 | 40 | 19 | 48 | 130 | 37 | 23 | 321 |
Wind waves Height (m) Direction Period (s) | S 3 | — | SSW 3 | S 3 | S 3 | — | — | — | W 6 | — | — | WNW 5 | W 4 | — | — | WNW 3 | WNW 4 | W 4 | — |
| kJ | 1 | — | 3 | 2 | 2 | — | — | — | 7 | — | — | 4 | 2 | — | — | 4 | 5 | 16 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 33 | 144 | 125 | 5 | 7 | 145 | 0 | 27 | 27 | 0 | 26 | 26 | 0 | 26 | 27 | 11 | 27 | 27 | 16 |
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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