
Surf Forecasts:
Big Rock surf forecast from 8 Aug 2026:
- Best quality surf: Sunday 9 Aug, 2AM (local time) - 3ft (0.9m), 16s 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★+): Sunday 9 Aug, 2AM (local time) - 3ft (0.9m), 16s 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 Sunday (Aug 09) at 2AM. The primary swell is predicted to be 0.9m and 16s period with a secondary swell of 0.5m and 5s. 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 onshore at the time the swell arrives.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Sun 9th Aug) | 3ft (0.9m) 16s |
| Best Surf | 2AM (Sun 9th Aug) | 3ft (0.9m) 16s |
| 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 folks, Rusty here. Let’s talk about what’s on the menu for the next couple of weeks.
To be straight with you, the outlook for Big Rock is a bit of a tough one. We’ve got a long stretch of small, messed-up waves. The water is weirdly warm, coming in at 75°F which is about 7°F warmer than usual for this time of year – that’s very unusual, almost like summer has overstayed its welcome.
The first few days are a write-off. From Friday the 7th right through to Thursday the 13th, the surf is just poor. Swell is tiny, mostly around 2ft to 3ft from the SW, but the problem is the wind. It’s coming from the WNW or WSW, hitting the break as onshore or cross-on, making it choppy and messy. There’s decent energy in the water, with combined swell energy readings around 286 to 377 (moderate), but the wind just ruins it. Nothing to get excited about.
We finally see a glimmer of hope on Friday the 14th. The morning gets a “marginal” nod, with a 2ft SW swell, a long period of 18 seconds, and combined energy jumping to 520 (strong). The wind is still cross-on from the WNW, so it’s not perfect, but the long period groundswell has some push. The afternoon is a no-go though. Saturday the 15th also looks marginal in the morning. Swell picks up to 3ft from the SW, period 16 seconds, and energy is strong at 547. But again, cross-on breeze from the WNW keeps things second-rate. The afternoon gets a bit bigger, 4ft, but the wind is still cross-on, so it’s lumpy.
After that, it’s back to the same old story. From Sunday the 16th all the way through to Saturday the 22nd, we’re stuck with poor surf. Swell hangs around 2ft to 3ft, mostly from the SW, with periods between 13 and 16 seconds. The wind is either onshore or cross-on, with a gentle breeze, so the surface is never clean. The energy readings drop off, staying in the 210 to 444 range (moderate to strong-ish), but it’s all for nothing with the wind.
The only real standout in this whole period is the morning of Saturday the 15th. It’s not perfect, but it’s the best we’ve got. The 3ft SW swell with a 16-second period will have a bit of shape for more experienced surfers, but the wind is still cross-on, so it’s not going to be glassy. If you’re an advanced surfer and you’re desperate, that’s your window. For everyone else, keep your board in the car.
Honestly, for a spot that’s a reef break and exposed to the W, we need a better window of clean, offshore wind. This setup is more interesting for the kite surfers with the consistent cross-on breeze.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Sat morning, min 21°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 23°C on Mon afternoon, min 20°C on Wed night). Wind will be generally light. | |||||||||||||||||||
Fri 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | ||||||||||||||
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 19 | SW 17 | SW 17 | 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 |
Wave Graph | ||||||||||||||||||||
173 | 309 | 230 | 261 | 367 | 275 | 217 | 211 | 183 | 134 | 142 | 164 | 197 | 249 | 179 | 254 | 251 | 245 | 239 | 273 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | cross-on | glassy | on | on | on | cross-on | cross-on | glassy | cross-on | on | on | cross-on | on | cross-on | cross-on | on | glassy |
High Tide | 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 | 10:12AM1.39m | 9:31PM2.07m | 10:44AM1.46m | 10:14PM1.94m | |||||||
Low Tide | 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 | 3:19PM0.47m | 4:25AM-0.28m | 4:07PM0.40m | 4:58AM-0.16m | |||||||
— | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | |
7:42 | — | — | 7:40 | — | — | 7:39 | — | — | 7:38 | — | — | 7:37 | — | — | 7:37 | — | — | 7:36 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 21 | 23 | 23 | 22 | 23 | 23 | 22 | 23 | 23 | 22 | 23 | 23 | 22 | 22 | 22 | 21 | 21 | 21 | 21 |
Feels °C | 22 | 21 | 23 | 22 | 22 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 22 | 22 | 22 | 23 | 21 | 22 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 17 | SW 17 | 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 |
103 | 309 | 230 | 261 | 367 | 275 | 217 | 211 | 183 | 118 | 142 | 164 | 197 | 249 | 179 | 254 | 251 | 245 | 239 | 273 | |
Swell 2 Height (m) Direction Period (s) | SW 19 | SW 12 | SW 12 | SW 12 | W 5 | WNW 5 | SW 11 | SW 11 | SW 20 | SW 20 | SW 19 | SW 18 | WSW 14 | SSW 12 | SSW 12 | SW 13 | SSW 10 | S 11 | S 11 | SW 20 |
173 | 92 | 69 | 90 | 11 | 8 | 61 | 19 | 63 | 134 | 133 | 118 | 120 | 48 | 46 | 44 | 37 | 59 | 57 | 97 | |
Swell 3 Height (m) Direction Period (s) | S 9 | W 4 | S 9 | SW 23 | SW 12 | SW 11 | SW 21 | W 4 | W 4 | SW 16 | W 8 | W 7 | SSW 12 | SW 13 | SW 13 | SSW 11 | WNW 9 | SW 12 | W 8 | S 10 |
6 | 3 | 6 | 20 | 69 | 31 | 72 | 3 | 1 | 40 | 4 | 4 | 57 | 45 | 44 | 40 | 16 | 39 | 12 | 29 | |
Wind waves Height (m) Direction Period (s) | WNW 4 | — | WNW 4 | W 4 | — | — | WNW 5 | — | — | W 4 | — | — | — | — | — | — | — | — | — | — |
4 | — | 3 | 6 | — | — | 9 | — | — | 1 | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 18 | 10 | 18 | 18 | 0 | 18 | 18 | 2 | 151 | 66 | 0 | 18 | 18 | 18 | 150 | 18 | 4 | 150 | 18 | 0 |
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.











