Surf Forecasts:
Blacks Beach surf forecast from 18 Aug 2026:
- Best quality surf: Monday 24 Aug, 2AM (local time) - 2.5ft (0.8m), 14s period, SSW swell with glassy winds.
- Most powerful swell: Tuesday 18 Aug, 8AM (local time) - 3ft (0.9m), 16s period, SSW swell with 402 kJ wave energy.
- Next surfable swell (1★+): Tuesday 18 Aug, 8AM (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 Tuesday (Aug 18) at 8AM. The primary swell is predicted to be 0.9m and 16s period with a secondary swell of 0.9m 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 0.9m 16s and forecast to arrive on Tuesday (Aug 18) at 8AM. Winds are predicted to be glassy at the time the swell arrives.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Tue 18th Aug) | 3ft (0.9m) 16s |
| Best Surf | 2AM (Mon 24th Aug) | 2.5ft (0.8m) 14s |
| Most Powerful | 8AM (Tue 18th Aug) | 3ft (0.9m) 16s |
Table - best surf conditions forecast for Blacks Beach over the next 16 days.
The Lowdown
G'day, I'm Rusty. Let's have a look at what's coming our way.
Alright, we've got a pretty quiet stretch ahead for Blacks Beach. The surf is looking poor for a good run, with only marginal conditions creeping in from Wednesday the 19th of August onwards, but even then, it's not really offering much to get excited about. The good news is the water temperature is sitting at a balmy 72°, which is much warmer than normal for this time of year, so at least a paddle won't be a shock to the system.
The first few days are a write-off. Monday the 17th and Tuesday the 18th are both showing poor surf conditions with cross-on winds and tiny swell around 2ft to 3ft. The combined wave energy is moderate, sitting between 348 and 411 (moderate energy), but the wind is making it choppy and messy. You'd be fighting a losing battle.
It's not until Wednesday the 19th that we see a slight shift, with the forecast moving to marginal. The swell remains small at 3ft from the SSW with a decent 16-second period (long-period groundswell). The wind is light and onshore Wednesday morning, but a light cross-onshore in the afternoon will put a few ripples on it. The combined energy is moderate, around 477 (moderate energy). It's still not great, but it's the best of a bad bunch for the first week. Thursday the 20th through to Saturday the 22nd of August is more of the same: tiny swell, light cross-onshore winds, and poor to marginal conditions. Honestly, there's nothing here worth paddling out for.
We then hit a bit of a gap from Sunday the 23rd to Saturday the 29th of August, with the forecast stuck on poor surf conditions and only occasional marginal calls. Swell stays below 3ft, winds are light and often onshore or cross-onshore. The combined energy remains moderate, but the quality just isn't there.
The standout period, and I mean the only real highlight, looks to be from Saturday the 29th of August into early September. We finally see the swell push up to 3ft to 4ft from the SSW, with a solid 16 to 17-second period. That's proper long-period groundswell, and for a spot like Blacks Beach (exposed to WNW, but picking up this SSW energy), it could offer some shape. The combined energy jumps to strong, hitting 746 (strong wave energy) on Saturday morning and staying in the 660 to 708 range through the start of September. The wind is light and cross-onshore or cross-shore, which is workable. This is the best on offer for the whole 16-day window. It's not a classic, but for those willing to wait, Saturday the 29th and Sunday the 30th of August, and Monday the 1st of September, are your best bets. Keep in mind, though, that with a long-period swell like this, the waves might break a bit straight at Blacks, and crowds are likely here – it's often busy. For experts only, as it can get a bit lumpy.
So, the long story short: a lot of waiting for a few marginal days. The setup doesn't look promising for paddle surfing until the end of August. If you're a kite surfer, the light to moderate cross-onshore winds and small swell through the middle of the period might be more your thing.
Rusty.
Short Range ForecastMostly dry. Warm (max 25°C on Wed morning, min 20°C on Mon morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 25°C on Sat morning, min 22°C on Thu morning). Wind will be generally light. | ||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | |||||||||||||||
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 14 | SSW 16 | SSW 17 | SSW 15 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SW 17 | SSW 13 | SSW 14 | SSW 15 | SW 19 | SW 18 | SSW 14 |
Wave Graph | |||||||||||||||||||||
367 | 264 | 316 | 232 | 243 | 339 | 382 | 387 | 242 | 236 | 236 | 170 | 156 | 137 | 98 | 90 | 239 | 222 | 224 | 197 | 273 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | on | on | cross-on | on | cross-on | cross | cross-on | cross-on | glassy | cross-on | cross-on | glassy | on | on | glassy | on | on | glassy |
High Tide | 1:01PM1.54m | 1:34AM1.04m | 1:42PM1.49m | 3:28AM0.88m | 2:37PM1.45m | 3:54PM1.43m | 8:26AM1.03m | 5:14PM1.47m | 8:32AM1.09m | 6:16PM1.55m | 8:46AM1.14m | 7:02PM1.65m | |||||||||
Low Tide | 7:47PM0.45m | 6:50AM0.62m | 9:15PM0.47m | 7:07AM0.79m | 11:03PM0.41m | 00:25AM0.30m | 10:32AM1.01m | 1:16AM0.18m | 12:09PM0.97m | 1:53AM0.09m | 12:58PM0.88m | 2:23AM0.01m | |||||||||
6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | |
— | 7:31 | — | — | 7:30 | — | — | 7:30 | — | — | 7:29 | — | — | 7:27 | — | — | 7:25 | — | — | 7:24 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 2 | — |
Temp °C | 22 | 22 | 21 | 23 | 23 | 22 | 25 | 24 | 23 | 24 | 24 | 22 | 24 | 24 | 23 | 25 | 25 | 24 | 24 | 25 | 23 |
Feels °C | 23 | 22 | 21 | 23 | 23 | 23 | 26 | 24 | 25 | 25 | 24 | 24 | 24 | 24 | 25 | 25 | 25 | 26 | 25 | 26 | 25 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 14 | W 6 | W 6 | W 7 | W 7 | W 7 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 14 | SSW 15 | SSW 13 | SSW 13 | SSW 14 |
367 | 264 | 54 | 51 | 70 | 70 | 79 | 387 | 242 | 236 | 236 | 170 | 156 | 137 | 98 | 90 | 239 | 222 | 137 | 135 | 273 | |
Swell 2 Height (m) Direction Period (s) | W 6 | SSW 18 | SSW 14 | SSW 16 | SSW 17 | SSW 15 | SSW 16 | W 7 | W 7 | W 6 | W 6 | W 7 | SW 18 | SSW 16 | SW 17 | SW 18 | WNW 11 | WNW 10 | SW 19 | SW 18 | SW 18 |
33 | 32 | 316 | 232 | 243 | 339 | 382 | 66 | 37 | 27 | 18 | 14 | 81 | 51 | 77 | 51 | 37 | 33 | 224 | 197 | 199 | |
Swell 3 Height (m) Direction Period (s) | S 10 | W 10 | W 10 | SSW 13 | SSW 13 | SW 19 | SW 20 | S 8 | SW 18 | SW 19 | WNW 13 | WNW 12 | W 6 | W 6 | W 6 | SSW 15 | SW 19 | SW 19 | SSW 16 | S 16 | WNW 10 |
8 | 8 | 7 | 114 | 98 | 15 | 16 | 1 | 50 | 57 | 16 | 27 | 7 | 6 | 6 | 42 | 129 | 58 | 86 | 45 | 31 | |
Wind waves Height (m) Direction Period (s) | — | W 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | WNW 10 | — |
— | 44 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 31 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 26 | 27 | 8 | 26 | 26 | 5 | 27 | 27 | 5 | 74 | 74 | 0 | 125 | 262 | 0 | 26 | 26 | 0 | 27 | 5 | 0 |
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.











