
Surf Forecasts:
Blacks Beach surf forecast from 6 Aug 2026:
- Best quality surf: Saturday 8 Aug, 5AM (local time) - 3ft (0.9m), 18s period, SSW swell with glassy winds.
- Most powerful swell: Saturday 8 Aug, 11PM (local time) - 3.5ft (1.0m), 16s period, SSW swell with 487 kJ wave energy.
- Next surfable swell (1★+): Thursday 6 Aug, 8AM (local time) - 2ft (0.6m), 13s 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 Thursday (Aug 06) at 8AM. The primary swell is predicted to be 0.6m and 13s period with a secondary swell of 0.3m and 4s. 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 1.0m 16s and forecast to arrive on Saturday (Aug 08) at 11PM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Thu 6th Aug) | 2ft (0.6m) 13s |
| Best Surf | 5AM (Sat 8th Aug) | 3ft (0.9m) 18s |
| Most Powerful | 11PM (Sat 8th Aug) | 3.5ft (1.0m) 16s |
Table - best surf conditions forecast for Blacks Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here. Gonna level with you – the next couple of weeks on the North Shore of Oahu are a real mixed bag. We've got some size, but the quality and the conditions are a battle. Let's break it down.
First up, the spot on the menu is Blacks Beach. The water's sitting at a balmy 76°, which is much warmer than normal for this time of year – that's a solid 9° above average, so you can definitely leave the 4/3 at home.
Right out of the gate, it's a tough start. Wednesday the 5th and Thursday the 6th are a write-off – we're talking tiny, weak 2ft swells with poor conditions. Don't even bother paddling out. The combined energy is weak to moderate at best (168 to 227).
Friday the 7th morning shows a tiny flicker of hope. That 2ft swell from the SSW has some serious length to it at 19 seconds, but the reports are calling it marginal at best. The energy is ramping up (500), but the conditions just aren't there to make it work.
Honestly, the whole first week is a struggle. The swell barely gets over 3ft, and while the wind is often light and offshore, the wave quality is just not cooperating. There's a lot of "poor surf conditions" in the notes. It’s a frustrating wait.
We finally start to see something build around the 14th of August. Friday the 14th has a 3ft SSW groundswell with an 18-second period and clean offshore winds in the morning. The energy is getting solid (640). It's still marginal, but it's the first real glimmer of a session.
The standout window looks to be Saturday the 15th of August. The swell bumps up to a clean 4ft from the SSW, with a solid 16-second period. The wind holds offshore all day from the WNW at a light 9 mph. That's the best combo we've seen. The wave energy is pumping hard (770). For Blacks, that’s a legit groundswell, so it’ll be offering up some nice lines. Head there early to beat the crowds, as it can get busy.
That's as good as it gets, sadly. After Sunday the 16th, the surf drops back into the 2ft to 3ft range for the rest of the outlook, with the wind turning more cross-on and choppy. The energy stays moderate (285 to 608), but the quality just isn't there for a standout session.
So there you have it. A long, slow start with one proper window of opportunity on the 15th of August. If you can wait, that's your day.
Rusty.
Short Range ForecastMostly dry. Warm (max 24°C on Fri morning, min 20°C on Wed morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 24°C on Sat morning, min 22°C on Sat morning). Wind will be generally light. | ||||||||||||||||||||
Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | |||||||||||||||
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 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SSW 19 | SSW 19 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 13 | SW 20 | SW 19 | SSW 13 | SW 18 | SW 18 |
Wave Graph | |||||||||||||||||||||
128 | 125 | 158 | 111 | 140 | 126 | 329 | 241 | 438 | 336 | 366 | 481 | 309 | 305 | 297 | 204 | 186 | 184 | 129 | 319 | 316 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | on | on | glassy | on | on | cross-on | on | on | glassy | cross-on | on | glassy | cross-on | cross-on | glassy | cross-on | cross-on | glassy |
High Tide | 2:32PM1.58m | 4:22AM0.83m | 3:38PM1.65m | 6:54AM0.89m | 4:52PM1.74m | 7:58AM1.00m | 6:02PM1.87m | 8:35AM1.11m | 7:03PM1.99m | 9:08AM1.21m | 7:56PM2.09m | 9:39AM1.30m | 8:45PM2.12m | ||||||||
Low Tide | 10:17PM0.39m | 8:01AM0.72m | 11:49PM0.20m | 9:25AM0.85m | 00:56AM-0.00m | 11:16AM0.88m | 1:47AM-0.18m | 12:36PM0.81m | 2:32AM-0.30m | 1:37PM0.69m | 3:12AM-0.36m | 2:30PM0.57m | 3:50AM-0.36m | ||||||||
6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — | |
— | 7:44 | — | — | 7:43 | — | — | 7:42 | — | — | 7:40 | — | — | 7:39 | — | — | 7:38 | — | — | 7:37 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 22 | 21 | 22 | 22 | 21 | 24 | 23 | 22 | 24 | 24 | 23 | 24 | 24 | 22 | 24 | 24 | 22 | 24 | 24 | 22 |
Feels °C | 22 | 22 | 22 | 22 | 22 | 22 | 24 | 22 | 22 | 24 | 23 | 24 | 24 | 24 | 23 | 24 | 23 | 23 | 24 | 23 | 23 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SSW 13 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SW 18 | SW 18 |
128 | 125 | 158 | 111 | 140 | 106 | 168 | 147 | 438 | 336 | 366 | 481 | 309 | 305 | 297 | 204 | 139 | 137 | 129 | 319 | 316 | |
Swell 2 Height (m) Direction Period (s) | W 6 | SW 12 | W 4 | W 4 | WNW 5 | SSW 18 | SSW 19 | SSW 19 | SW 12 | SSW 12 | SW 12 | SW 12 | SSW 11 | SW 11 | SW 11 | SW 20 | SW 20 | SW 19 | SW 14 | SW 14 | SSW 12 |
10 | 34 | 6 | 4 | 5 | 126 | 329 | 241 | 122 | 94 | 139 | 92 | 47 | 58 | 42 | 103 | 186 | 184 | 74 | 103 | 47 | |
Swell 3 Height (m) Direction Period (s) | SSW 12 | S 9 | S 9 | S 12 | SSW 20 | W 5 | W 12 | W 12 | W 15 | W 4 | W 12 | SW 9 | W 4 | SW 21 | SW 21 | W 12 | SW 16 | WNW 12 | SW 18 | SSW 12 | SW 13 |
30 | 6 | 6 | 25 | 82 | 4 | 3 | 3 | 4 | 3 | 12 | 20 | 3 | 72 | 71 | 25 | 39 | 28 | 114 | 47 | 45 | |
Wind waves Height (m) Direction Period (s) | — | WNW 6 | — | — | — | — | — | WNW 5 | WNW 4 | — | SW 9 | — | — | W 4 | — | — | — | — | — | — | — |
— | 10 | — | — | — | — | — | 4 | 3 | — | 20 | — | — | 3 | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 27 | 27 | 26 | 27 | 27 | 0 | 27 | 26 | 5 | 26 | 27 | 0 | 145 | 27 | 0 | 5 | 145 | 0 | 5 | 145 | 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.











