
Surf Forecasts:
Blacks Beach surf forecast from 18 Jul 2026:
- Best quality surf: Saturday 25 Jul, 8AM (local time) - 3.5ft (1.0m), 21s period, SSW swell with glassy winds.
- Most powerful swell: Saturday 25 Jul, 5AM (local time) - 3.5ft (1.1m), 21s period, SW swell with 1,051 kJ wave energy.
- Next surfable swell (1★+): Sunday 19 Jul, 2AM (local time) - 1.5ft (0.5m), 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 0.5m 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 1.1m 21s and forecast to arrive on Saturday (Jul 25) 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 1.2m 12s period and expected on Sunday (Jul 19) at 5PM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Sun 19th Jul) | 1.5ft (0.5m) 16s |
| Best Surf | 8AM (Sat 25th Jul) | 3.5ft (1.0m) 21s |
| Most Powerful | 5AM (Sat 25th Jul) | 3.5ft (1.1m) 21s |
Table - best surf conditions forecast for Blacks Beach over the next 16 days.
The Lowdown
Alright, this is Rusty, checking in from the local scene. It's a bit of a slow burner for the next couple of weeks, so let's get into it.
We're looking at a stretch that starts with a real nothing-burger. The first few days are flat and messy, so don't bother paddling out until things start to show a bit of life around the 21st. The water is sitting at a very unusual 73°F, which is a fair bit warmer than we'd expect for this time of year.
The first proper chance to get wet comes on Tuesday, July 21st. Blacks Beach is the only spot in the picture, and it's a tricky one. The swell is coming from the SSW at 4ft with a period of 16 seconds – that's a proper groundswell, but it's got a bit of a cross-onshore kick from the WSW at 9 mph, which will put a bit of a chop on the surface. The combined energy is moderate at 845, so there's some push there, but it's not exactly clean. The forecast calls it marginal, and I'd agree. Given the size and the conditions, it's really one for the advanced crew only.
The rest of that week and into the next is a real mixed bag of "marginal" and "poor" labels. The swell sticks around from the SSW, but the wind is mostly onshore or cross-onshore, and the energy stays moderate. The real standout window starts to shape up around Monday, July 27th, and into Tuesday, July 28th. The swell picks up to 4ft to 5ft from the SSW, with periods around 17-18 seconds, and the combined energy jumps into the strong range (over 1000, hitting 1394 and 1485). The wind is light and mostly onshore, which is a shame, but for an exposed spot like Blacks, a light onshore is often better than a strong one. The size is getting up there – 5ft is starting to push into the "too big for beginners" territory, but it's a classic for the experienced surfer.
If I had to pick the best of the bunch, I'd circle Tuesday, July 28th. The morning shows a 5ft SSW swell with a 17-second period, and that cross-on wind from the WSW is only 6 mph – light enough to not ruin it completely. The afternoon pushes to 5ft with a 18-second period and the highest combined energy of the whole period at 1485. It's not perfect, but it's the closest we get to a proper, powerful winter groundswell.
After that, the swell fades again through the end of July and into August, dropping back to small, weak, and choppy. By August 1st, the combined energy is a paltry 28 to 33, so the boards will be staying on the rack.
The crowds at Blacks are "often," so if you're heading out on the 27th or 28th, expect plenty of company. It's the best on offer, but it's not a secret.
Stay keen, and keep an eye on the horizon. Forecasts can change.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Sun morning, min 19°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 24°C on Tue morning, min 21°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | |||||||||||||||
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) | SW 18 | SW 18 | SW 16 | SW 17 | SW 17 | SSW 15 | SW 15 | SW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SW 26 | SW 26 | SW 24 | SSW 24 | SW 21 |
Wave Graph | |||||||||||||||||||||
366 | 379 | 127 | 350 | 424 | 468 | 344 | 367 | 334 | 817 | 559 | 551 | 437 | 431 | 321 | 239 | 171 | 171 | 563 | 368 | 664 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | glassy | on | on | glassy | on | on | on | cross-on | on | cross-on | cross-on | on | glassy | on | on | on | cross-on | cross-on | cross-on |
High Tide | 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 | 7:48AM0.93m | 5:48PM1.57m | 8:42AM1.01m | 6:36PM1.63m | ||||||||
Low Tide | 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 | 10:53AM0.86m | 1:41AM0.12m | 12:05PM0.89m | 2:19AM0.02m | ||||||||
5:52 | — | — | 5:52 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — | |
— | 7:57 | — | — | 7:55 | — | — | 7:55 | — | — | 7:54 | — | — | 7:53 | — | — | 7:53 | — | — | 7:52 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 21 | 21 | 23 | 22 | 21 | 23 | 23 | 23 | 24 | 24 | 23 | 23 | 24 | 23 | 24 | 24 | 23 | 22 | 22 | 20 |
Feels °C | 22 | 21 | 22 | 24 | 22 | 22 | 23 | 22 | 24 | 22 | 23 | 24 | 24 | 24 | 24 | 25 | 24 | 25 | 22 | 22 | 20 |
Swell 1 Height (m) Direction Period (s) | SW 18 | SW 18 | S 11 | SW 17 | S 12 | SSW 15 | S 11 | S 11 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | WNW 6 | S 13 | S 13 | S 12 | SSW 13 | SSW 13 |
366 | 379 | 110 | 350 | 403 | 468 | 235 | 242 | 334 | 817 | 559 | 551 | 437 | 431 | 321 | 51 | 434 | 490 | 280 | 227 | 437 | |
Swell 2 Height (m) Direction Period (s) | S 12 | S 12 | SW 16 | S 11 | SW 17 | S 11 | SW 15 | SW 16 | S 10 | WNW 5 | SSW 9 | W 5 | WNW 6 | W 6 | WNW 6 | SSW 14 | SW 26 | W 6 | W 6 | S 11 | SW 21 |
98 | 96 | 127 | 143 | 424 | 229 | 344 | 367 | 94 | 9 | 64 | 20 | 39 | 32 | 45 | 239 | 171 | 68 | 64 | 82 | 664 | |
Swell 3 Height (m) Direction Period (s) | W 6 | W 6 | S 13 | S 13 | WNW 6 | W 5 | WNW 5 | SSW 13 | SW 13 | WNW 14 | S 12 | S 8 | SSW 8 | S 15 | S 13 | S 12 | WSW 6 | SW 26 | SW 24 | SSW 24 | W 6 |
12 | 12 | 56 | 202 | 11 | 9 | 9 | 35 | 172 | 19 | 12 | 21 | 34 | 109 | 163 | 139 | 8 | 171 | 563 | 368 | 31 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | WNW 5 | — | — | W 5 | — | — | WNW 6 | — | — | WNW 6 | — | — | W 6 | — |
— | — | — | — | — | — | — | 9 | — | — | 13 | — | — | 47 | — | — | 40 | — | — | 46 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 27 | 27 | 0 | 27 | 27 | 0 | 26 | 26 | 27 | 27 | 26 | 27 | 27 | 26 | 0 | 27 | 26 | 17 | 27 | 27 | 27 |
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.










