
Surf Forecasts:
Big Rock surf forecast from 9 Aug 2026:
- Best quality surf: Monday 10 Aug, 5AM (local time) - 2.5ft (0.7m), 14s period, SW swell with glassy winds.
- Most powerful swell: Saturday 15 Aug, 2AM (local time) - 3.5ft (1.1m), 17s period, SW swell with 655 kJ wave energy.
- Next surfable swell (1★+): Monday 10 Aug, 5AM (local time) - 2.5ft (0.7m), 14s 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 Monday (Aug 10) at 5AM. The primary swell is predicted to be 0.7m and 14s period with a secondary swell of 0.4m and 11s. 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 1.1m 17s and forecast to arrive on Saturday (Aug 15) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Mon 10th Aug) | 2.5ft (0.7m) 14s |
| Best Surf | 5AM (Mon 10th Aug) | 2.5ft (0.7m) 14s |
| Most Powerful | 2AM (Sat 15th Aug) | 3.5ft (1.1m) 17s |
Table - best surf conditions forecast for Big Rock over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what the coming weeks have got in store for us in this neck of the woods. I'm gonna level with you straight up: it's been a tough stretch, and right now, things are looking pretty grim for a proper surf. We’re starting with a bit of a gap here, because the first proper day where you'd even think about paddling out is a long way off.
Let’s talk about the one spot we've got on the radar: Big Rock. This is a solid reef setup, handles a west swell best, and you'll want to be an advanced surfer to tackle it. It's fairly consistent, but when it's on, it can be a magnet for the crew, so expect the crowd factor to be 'often' – you won't be surfing alone.
Right now, and for most of this week, it’s a no-go. We're looking at a long stretch of days with "poor surf conditions" and scores that just don't cut it. The wind is a constant headache, mostly coming from the WNW at 9 mph as a cross-onshore, or straight onshore from the WSW. It's choppy, messy, and with combined swell energy mostly wobbling in the 200 to 300s (moderate), it’s just not worth the effort. The swell is tiny, hovering around 2 ft to 3 ft from the SW, with a long period of 16-18 seconds. That’s a long period groundswell, which at the best of times doesn't love a reef that's likely more exposed to a different direction, and with that wind, it’s just a bumpy mess.
We do see a slight bump in energy around Friday the 14th, where the combined energy jumps up to 544 (strong). The swell height only hits 2 ft, but the period is a lengthy 18 seconds. The morning of the 14th is the first time we see a "marginal" note, with a score reaching a 2 out of 10. There's a light breeze from the W at 6 mph, which is straight onshore. It's not great, but it's the best we've seen all week.
The best offering in this whole 16-day window has to be Saturday the 15th. The swell starts to push up to 3 ft in the morning and 4 ft by the afternoon, all from the SW with a 16-second period. The combined energy is strong at 613. But here's the kicker: the wind. It's going to be a cross-onshore from the WNW, picking up to 12 mph in the afternoon. That's going to chop it right up. The morning might be the lesser of two evils, but it's still getting a score of 1 out of 10. So, 4 ft of long-period SW swell, but with strong cross-onshore wind... it’s going to be a battle. Honestly, with those winds and that setup, it might look more interesting for a kite surfer than someone on a paddle board.
After that, things just fade back into the same pattern of small, onshore, average swells for the rest of the month. There is a moment on Saturday the 22nd where a 3 ft swell from the W shows up with a short 9-second period, but again, the wind is still a problem. It’s a long, flat run of poor conditions.
So, if you're desperate, the window around Friday 14th and Saturday 15th of August is your best shot, but keep your expectations low. It’s not going to be classic. For the rest of it? Save your energy, wait for a better forecast. This stretch might be a bit more normal for the area when it gets like this, but it never stays poor forever.
Rusty, signing off.
Short Range ForecastMostly dry. Warm (max 23°C on Sat afternoon, min 22°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 23°C on Tue afternoon, min 20°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Sat 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | ||||||||||||||
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 16 | SW 16 | SSW 15 | SW 15 | SW 14 | SW 13 | SW 20 | SW 13 | SW 14 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 17 |
Wave Graph | ||||||||||||||||||||
261 | 367 | 275 | 217 | 211 | 183 | 134 | 173 | 164 | 197 | 249 | 179 | 254 | 251 | 245 | 239 | 273 | 263 | 255 | 655 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | on | on | on | cross-on | cross-on | on | on | on | on | on | on | cross-on | on | on | on | on | cross-on |
High Tide | 6:02PM1.87m | 8:35AM1.11m | 7:03PM1.99m | 9:08AM1.21m | 7:56PM2.09m | 9:39AM1.30m | 8:45PM2.12m | 10:12AM1.39m | 9:31PM2.07m | 10:44AM1.46m | 10:14PM1.94m | 11:17AM1.52m | 10:58PM1.76m | |||||||
Low Tide | 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 | 3:19PM0.47m | 4:25AM-0.28m | 4:07PM0.40m | 4:58AM-0.16m | 4:55PM0.37m | ||||||||
— | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | |
7:40 | — | — | 7:39 | — | — | 7:38 | — | — | 7:37 | — | — | 7:37 | — | — | 7:36 | — | — | 7:35 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 22 | 23 | 23 | 22 | 23 | 23 | 22 | 23 | 23 | 22 | 23 | 23 | 21 | 21 | 21 | 20 | 21 | 21 | 21 |
Feels °C | 23 | 23 | 23 | 23 | 23 | 24 | 23 | 23 | 24 | 23 | 23 | 23 | 23 | 22 | 23 | 21 | 21 | 22 | 21 | 21 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 16 | SSW 15 | SW 15 | SW 14 | SW 13 | SSW 13 | SW 13 | SW 14 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 17 |
261 | 367 | 275 | 217 | 211 | 183 | 118 | 173 | 164 | 197 | 249 | 179 | 254 | 251 | 245 | 239 | 273 | 251 | 251 | 655 | |
Swell 2 Height (m) Direction Period (s) | SW 12 | W 5 | W 5 | SW 11 | W 4 | SW 20 | SW 20 | SW 19 | SW 18 | WSW 14 | SSW 12 | SSW 12 | SW 13 | SSW 11 | SSW 12 | SSW 10 | SSW 10 | SW 18 | SW 18 | SW 11 |
90 | 11 | 13 | 61 | 4 | 63 | 134 | 133 | 118 | 120 | 48 | 46 | 44 | 37 | 94 | 35 | 32 | 263 | 255 | 42 | |
Swell 3 Height (m) Direction Period (s) | SW 23 | SW 12 | SW 11 | SW 21 | SW 11 | W 4 | SW 16 | WNW 11 | WNW 10 | SSW 12 | SW 13 | SW 13 | SSW 11 | W 9 | W 9 | SW 12 | SW 20 | SSW 10 | SSW 9 | S 11 |
20 | 69 | 31 | 72 | 30 | 1 | 40 | 12 | 9 | 57 | 45 | 44 | 40 | 6 | 6 | 53 | 97 | 30 | 26 | 22 | |
Wind waves Height (m) Direction Period (s) | W 4 | — | — | WNW 5 | — | — | W 4 | — | — | — | — | — | W 10 | — | — | W 8 | — | — | WNW 8 | — |
9 | — | — | 9 | — | — | 1 | — | — | — | — | — | 17 | — | — | 12 | — | — | 12 | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 18 | 4 | 18 | 18 | 18 | 18 | 18 | 5 | 18 | 18 | 18 | 18 | 18 | 3 | 18 | 18 | 18 | 18 | 18 | 18 |
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.











