
Surf Forecasts:
Blacks Beach surf forecast from 16 Sep 2026:
- Best quality surf: Thursday 17 Sep, 5AM (local time) - 3ft (0.9m), 16s period, SSW swell with glassy winds.
- Most powerful swell: Monday 21 Sep, 2PM (local time) - 3.5ft (1.1m), 17s period, SW swell with 625 kJ wave energy.
- Next surfable swell (1★+): Thursday 17 Sep, 2AM (local time) - 3ft (0.9m), 16s 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 Thursday (Sep 17) at 2AM. The primary swell is predicted to be 0.9m and 16s period with a secondary swell of 0.4m and 9s. 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 17s and forecast to arrive on Monday (Sep 21) at 2PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 12s period and expected on Sunday (Sep 20) at 5PM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Thu 17th Sep) | 3ft (0.9m) 16s |
| Best Surf | 5AM (Thu 17th Sep) | 3ft (0.9m) 16s |
| Most Powerful | 2PM (Mon 21st Sep) | 3.5ft (1.1m) 17s |
Table - best surf conditions forecast for Blacks Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s comin’ down the line for us.
First up, I gotta be straight with you—this outlook is a tough one. There’s a long stretch ahead with very little to get excited about. We’re lookin’ at a solid run of poor surf conditions from Wednesday the 16th of September all the way through to Sunday the 27th. That’s nearly two weeks of mostly onshore wind and weak, messy swell. Not much to work with.
The only spot on the radar is Blacks Beach. It’s a consistent, exposed break that needs a good W-WNW swell to really fire, but we’re gettin’ a persistent SW-SSW pulse that’s just not matchin’ up right. The water temp is runnin’ about average for this time of year, so nothin’ unusual there.
Let’s break it down day by day.
Wednesday 16th and Thursday 17th: Onshore wind all the way, light breeze but it's comin' from the wrong direction. Swell is small, around 3 ft to 3 ft from the SSW with a very long period of 16–17 seconds. That long period means it’s got some push, but at a beach break like Blacks, it’ll just close out or wobble straight. The combined wave energy is moderate (348 to 493). Don’t bother.
Friday 18th: Same story. Swell drops a touch to 2 ft, still with a long period from the SW. Onshore wind again. The energy’s still moderate (475 to 497). No go.
Saturday 19th and Sunday 20th: A little change. Swell picks up to 3 ft–3 ft from the SW, period around 18 seconds. The wind is light and onshore still, but the energy is now moderate to strong (540 to 603). There’s a hint of something in the morning on Saturday—marginal at best. Not worth paddlin’ out for unless you’re desperate for a few small, cleanish waves. But it’s not gonna be good.
Monday 21st: The strongest energy of the whole run hits—724 on Monday morning. Swell is 4 ft from the SW, period 17 seconds. Still onshore wind though. This is a solid groundswell for sure, but the wind is killin’ it. The energy is strong, but the wind’s cross-onshore or onshore. You’d be fightin’ chop. For experts only if you’re bored.
Tuesday 22nd through Sunday 27th: Energy slowly fades from 470 down to 290. Swell stays small, 2 ft to 3 ft, mostly SW and SSW. Period drops from 16 seconds down to 12 seconds by the weekend. Onshore and cross-onshore winds. Thursday the 24th afternoon gets a bit windier with moderate breeze and possible rain showers. The whole stretch is a write-off.
Monday 28th to Wednesday 30th: A little flicker. Swell stays tiny (2 ft to 3 ft) but the period on Monday afternoon and Tuesday morning gets back up to 16–18 seconds from the SW. Wind is light and onshore. Energy is moderate, around 386 to 506. Still marginal. By Wednesday the 30th the energy drops below 270 again. Still no standouts.
Thursday 1st October: The last day in the outlook. Swell is a pathetic 2 ft from the SW, period 18 seconds, but the wind comes from the NW—cross-onshore. Energy is weak (269). Not a single memorable wave in this whole run.
Honestly, if you’re lookin’ to get wet, this stretch is a dud. The best you’ll get is maybe a very brief window early on Saturday 19th or Monday 21st morning if you’re an expert and you don’t mind poor shape. For everyone else, leave the board in the car and go for a hike. It’s gonna be a long wait.
Rusty, out.
Short Range ForecastMostly dry. Warm (max 21°C on Wed morning, min 19°C on Thu morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 21°C on Sat morning, min 19°C on Sat morning). Wind will be generally light. | ||||||||||||||||||||
Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | |||||||||||||||
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 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SW 19 | SW 19 | SW 19 | SW 18 | SW 18 | SW 18 | SW 18 | SW 18 | SW 17 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 |
Wave Graph | |||||||||||||||||||||
475 | 339 | 402 | 284 | 242 | 405 | 303 | 303 | 299 | 379 | 375 | 375 | 522 | 522 | 493 | 553 | 618 | 515 | 416 | 489 | 496 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | glassy | on | on | cross-on | on | on | cross-on | on | on | glassy | cross-on | on | on | on | on | glassy | on | on | glassy |
High Tide | 12:23PM1.51m | 1:09PM1.41m | 2:38PM1.34m | 8:04AM1.10m | 4:32PM1.35m | 7:53AM1.16m | 5:45PM1.44m | 8:01AM1.21m | 6:34PM1.54m | 8:12AM1.28m | 7:14PM1.62m | ||||||||||
Low Tide | 8:21PM0.37m | 10:08PM0.39m | 11:39PM0.32m | 10:40AM1.07m | 00:33AM0.23m | 12:03PM0.97m | 1:10AM0.14m | 12:45PM0.84m | 1:39AM0.08m | 1:19PM0.69m | 2:04AM0.05m | ||||||||||
6:33 | — | — | 6:33 | — | — | 6:33 | — | — | 6:33 | — | — | 6:35 | — | — | 6:35 | — | — | 6:35 | — | — | |
— | 6:53 | — | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 21 | 20 | 21 | 20 | 19 | 21 | 21 | 20 | 21 | 21 | 21 | 21 | 21 | 20 | 21 | 20 | 19 | 21 | 21 | 20 |
Feels °C | 20 | 20 | 21 | 21 | 19 | 18 | 21 | 20 | 20 | 21 | 20 | 22 | 22 | 20 | 21 | 21 | 18 | 19 | 21 | 20 | 20 |
Swell 1 Height (m) Direction Period (s) | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SW 19 | SSW 13 | SW 18 | SW 18 | SW 18 | SW 18 | SW 18 | SW 17 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 |
475 | 339 | 402 | 284 | 242 | 405 | 180 | 303 | 139 | 379 | 375 | 375 | 522 | 522 | 493 | 553 | 618 | 515 | 416 | 489 | 496 | |
Swell 2 Height (m) Direction Period (s) | W 8 | W 5 | SSW 9 | SW 21 | SW 21 | SW 21 | SW 19 | SSW 13 | SW 19 | SSW 13 | W 6 | W 6 | W 6 | S 12 | W 6 | W 6 | W 6 | W 6 | W 5 | W 5 | W 5 |
18 | 9 | 28 | 160 | 160 | 212 | 303 | 158 | 299 | 137 | 23 | 21 | 36 | 76 | 43 | 36 | 26 | 15 | 8 | 8 | 5 | |
Swell 3 Height (m) Direction Period (s) | S 9 | S 9 | SSW 13 | S 8 | S 8 | W 11 | W 5 | S 11 | W 5 | W 6 | SSW 13 | SSW 12 | SSW 12 | SW 12 | S 12 | SSW 12 | SSW 12 | SSW 12 | SSW 11 | S 11 | S 11 |
25 | 25 | 68 | 13 | 12 | 2 | 14 | 20 | 18 | 24 | 95 | 57 | 56 | 6 | 78 | 47 | 47 | 45 | 41 | 21 | 21 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | W 5 | — | — | W 5 | — | — | — | — | — | W 6 | — | — | — | — | — | — | — |
— | — | — | — | 4 | — | — | 15 | — | — | — | — | — | 47 | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 144 | 27 | 0 | 27 | 26 | 16 | 26 | 27 | 19 | 26 | 26 | 0 | 27 | 26 | 5 | 27 | 27 | 0 | 27 | 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.










