
Surf Forecasts:
Big Rock surf forecast from 3 Aug 2026:
- Best quality surf: Tuesday 4 Aug, 11PM (local time) - 1.5ft (0.5m), 13s period, SW swell with glassy winds.
- Most powerful swell: Saturday 8 Aug, 11PM (local time) - 3ft (0.9m), 16s period, SW swell with 371 kJ wave energy.
- Next surfable swell (1★+): Tuesday 4 Aug, 11PM (local time) - 1.5ft (0.5m), 13s period with SW swell.
Best Forecast Surf Conditions for Big Rock this week:
The surf forecast for Big Rock over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 04) at 11PM. The primary swell is predicted to be 0.4m and 15s period with a secondary swell of 0.5m and 13s. Another secondary swell of 0.5m and 6s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Big Rock in the next 16 days are 0.9m 16s and forecast to arrive on Saturday (Aug 08) at 11PM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Tue 4th Aug) | 1.5ft (0.5m) 13s |
| Best Surf | 11PM (Tue 4th Aug) | 1.5ft (0.5m) 13s |
| Most Powerful | 11PM (Sat 8th Aug) | 3ft (0.9m) 16s |
Table - best surf conditions forecast for Big Rock over the next 16 days.
The Lowdown
Alright, Rusty here, let’s talk about what’s coming up for Big Rock.
Honestly, mate, this is a tough one. The whole 16-day window looks pretty grim. We’ve got a lot of small, weak swell and the wind is mostly a problem. The water is cooking though – it’s sitting at 75°, which is a massive 7° warmer than usual for this time of year. That’s very unusual.
Right from the Monday morning of the 3rd of August, it’s small. Swell is 2ft from the SW, period 13 seconds, but with a light westerly offshore wind. The combined energy is weak – only 188 – and the wave comment says “poor surf conditions.” That’s the story for the next few days. Tuesday the 4th is the same – 2ft, 15 second period, offshore wind, but still a zero score. The energy is moderate at best, ranging from 182 to 193.
Wednesday the 5th through to the morning of the 9th, the swell stays tiny, around 2ft to 2ft, and the wind starts to get messy. It’s cross-onshore on a few sessions, which is bad news for a reef break like this. The combined energy does bump up to 388 by Friday the 7th with a 19 second period, which is a long period groundswell, but it’s still a zero score. That long period might make for some better shaped waves, but with the cross-onshore wind, it’s just choppy.
Around the 9th and 10th of August, we get a couple of “marginal” calls – scores of 1. The swell is 2ft, cross-shore wind, and the energy is moderate (264 to 352). It’s still not worth paddling out for.
The second week is more of the same. From the 11th to the 17th, it’s all small – 2ft to 3ft – with mostly cross-onshore or onshore wind. The energy is moderate to strong, hitting 485 on the 15th of August, but the wave comment is still “poor surf conditions.” The swell direction is from the SW, which is offshore for this spot, but the wind is just ruining it.
The one standout, if you can call it that, is the morning of the 18th of August. The swell jumps to 5ft from the W, but the period is a short 8 seconds. That’s windswell, and it’s coming with a cross-onshore breeze at 9 mph. The combined energy is 446 (strong), but it’s going to be choppy and messy. The afternoon is similar – 4ft, 8 seconds, same wind. This is expert territory at over 4ft, and with the short period and cross-onshore wind, it’s going to be a battle. Honestly, for a reef break with this setup, it might be more interesting for kite surfing than paddle surfing.
So, the bottom line: there’s nothing good here. No standouts, no clean windows. The entire 16 days is a dud. It’s one of those blank runs where the forecasts can change, but for now, leave the board at home.
Rusty
Short Range ForecastMostly dry. Warm (max 22°C on Mon morning, min 20°C on Mon morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 23°C on Thu morning, min 21°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | |||||||||||||||
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 13 | SW 12 | SW 16 | SW 15 | SW 15 | SW 14 | WSW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SSW 19 | SW 19 | SW 17 | SW 17 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 |
Wave Graph | |||||||||||||||||||||
100 | 102 | 72 | 113 | 107 | 167 | 134 | 96 | 155 | 108 | 108 | 113 | 248 | 173 | 309 | 230 | 261 | 367 | 220 | 217 | 211 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | on | cross-on | on | cross-on | on | on | cross-on | cross-on | on | cross-on | cross-on | on | cross | cross | cross-on | cross |
High Tide | 1:02PM1.47m | 00:49AM1.18m | 1:42PM1.53m | 2:06AM0.96m | 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 | ||||||||
Low Tide | 7:15PM0.55m | 6:51AM0.40m | 8:36PM0.51m | 7:21AM0.57m | 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 | ||||||||
6:03 | — | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — | |
— | 7:45 | — | — | 7:45 | — | — | 7:44 | — | — | 7:43 | — | — | 7:42 | — | — | 7:40 | — | — | 7:39 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 22 | 21 | 22 | 22 | 21 | 22 | 22 | 21 | 23 | 22 | 22 | 22 | 22 | 21 | 22 | 23 | 22 | 22 | 23 | 22 |
Feels °C | 23 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 24 | 22 | 23 | 22 | 22 | 21 | 22 | 22 | 23 | 22 | 23 | 22 |
Swell 1 Height (m) Direction Period (s) | SW 13 | W 6 | W 9 | W 6 | W 6 | SW 14 | WSW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 17 | SW 17 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 |
100 | 25 | 56 | 16 | 17 | 167 | 134 | 96 | 155 | 108 | 108 | 106 | 136 | 103 | 309 | 230 | 261 | 367 | 220 | 217 | 211 | |
Swell 2 Height (m) Direction Period (s) | W 6 | SW 12 | SW 12 | SW 15 | SW 15 | W 5 | W 5 | SW 11 | W 5 | WNW 5 | WNW 5 | SW 18 | SSW 19 | SW 19 | SW 12 | SW 12 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 |
20 | 98 | 72 | 113 | 107 | 12 | 13 | 20 | 12 | 9 | 9 | 113 | 248 | 173 | 93 | 69 | 90 | 89 | 43 | 59 | 30 | |
Swell 3 Height (m) Direction Period (s) | SW 16 | WSW 16 | SW 16 | SW 12 | SW 12 | S 9 | SSW 12 | S 9 | S 9 | SW 20 | SW 20 | W 5 | W 5 | W 5 | W 5 | W 5 | SSW 9 | W 13 | W 4 | SW 21 | W 8 |
68 | 102 | 66 | 53 | 69 | 6 | 15 | 6 | 6 | 60 | 64 | 8 | 4 | 4 | 4 | 2 | 15 | 14 | 1 | 72 | 12 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | WNW 5 | — | — | — | — | — | WNW 5 | — | — | — | — | — | W 5 | — |
— | — | — | — | — | — | — | 9 | — | — | — | — | — | 8 | — | — | — | — | — | 4 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 18 | 18 | 10 | 18 | 18 | 4 | 18 | 18 | 5 | 18 | 18 | 4 | 6 | 18 | 60 | 127 | 18 | 6 | 6 | 66 | 1 |
Best forecast wave conditions in San Diego County | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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Information about the Big Rock Surf forecast
The above surf forecast table for Big Rock provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Big Rock can be found by selecting the local surf guide option on the grey menu. Our Big Rock 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 (Big Rock) 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 Big Rock 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.
Big Rock is 11 km (7 miles) from 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.











