Surf Forecasts:
Big Rock surf forecast from 15 Jul 2026:
- Best quality surf: Sunday 19 Jul, 5AM (local time) - 3.5ft (1.0m), 13s period, S swell with glassy winds.
- Most powerful swell: Monday 20 Jul, 2AM (local time) - 4.5ft (1.3m), 12s period, SSW swell with 508 kJ wave energy.
- Next surfable swell (1★+): Wednesday 15 Jul, 8AM (local time) - 1.5ft (0.5m), 18s 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 Wednesday (Jul 15) at 8AM. The primary swell is predicted to be 0.5m and 18s period with a secondary swell of 0.6m and 13s. 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 1.3m 12s and forecast to arrive on Monday (Jul 20) at 2AM. 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 (Wed 15th Jul) | 1.5ft (0.5m) 18s |
| Best Surf | 5AM (Sun 19th Jul) | 3.5ft (1.0m) 13s |
| Most Powerful | 2AM (Mon 20th Jul) | 4.5ft (1.3m) 12s |
Table - best surf conditions forecast for Big Rock over the next 16 days.
The Lowdown
G'day, I'm Rusty. Let's have a look at what's on the cards for your local reef, Big Rock.
Alright, the first week and a half is a bit of a write-off, to be honest. We've got a long stretch of small, weak swell and cross-shore winds that are just going to chop it up. From July 14th right through until the 23rd, the surf is either poor or marginal. Those swell heights are barely pushing 2ft to 3ft, and the combined energy is weak, mostly under 500 (266 to 458). It's just not worth paddling out for any of that. The wind is mostly cross or cross-onshore, making things messy.
The first real glimmer of hope comes on Thursday, July 23rd. The afternoon session is looking like a proper standout. The wind switches to a glassy calm (3 mph), and we get a clean 5ft SSW swell with a 14-second period. The combined energy jumps to a solid 829, which is decent. The wave comment says "expect very good surf conditions," and I'm buzzing about it. This is the best on offer in the whole window. The water is also much warmer than normal for this time of year, sitting at 72°, which is a nice bonus.
Now, for the big dogs. On Friday, July 24th, the swell gets chunky. The morning has 6ft SSW swell, but it's onshore wind, so it's marginal. The real story is Friday afternoon: a 7ft SSW swell rocks up with a 16-second period and a massive combined energy of 2366. That's some serious power. But the file says it's "too big for this break," and at that size, it's only for the most experienced, absolute experts. The wind is a light cross-onshore, so it's not glassy. Saturday, July 25th is similar, with 7ft SSW swell in the morning, still too big for the break.
After that, the swell drops back down to the 3ft range for the rest of the month, with the energy fading to around 600-900. The wind mostly stays cross-on, so it's just a return to average, marginal conditions.
So, to sum it up: the first nine days are a total miss. The clear standout is Thursday afternoon, July 23rd. Mark it in your calendar. That glassy, clean 5ft swell is the one to go for. The following Friday and Saturday have heaps of size, but it's only for the hardcore crew at a spot that's not handling it well.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Wed morning, min 20°C on Tue afternoon). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 22°C on Sat afternoon, min 20°C on Fri afternoon). Wind will be generally light. | ||||||||||||||||||||
Tue 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | SW 18 | SW 18 | SW 17 | SW 16 | WSW 16 | SW 16 | WNW 9 | WSW 15 | SW 19 | SW 18 | WSW 15 | SW 18 | SW 18 | SSW 13 | SW 17 | SW 17 | SSW 12 | SW 16 | SW 16 | SW 16 | SW 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 154 | 249 | 148 | 130 | 171 | 203 | 126 | 144 | 181 | 103 | 144 | 366 | 252 | 141 | 361 | 350 | 508 | 339 | 416 | 492 | 400 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross | cross-on | cross-on | cross | on | on | on | on | on | cross-on | on |
High Tide | 9:37PM2.16m | 11:24AM1.28m | 10:25PM2.06m | 12:05PM1.33m | 11:13PM1.89m | 12:46PM1.38m | 00:02AM1.65m | 1:30PM1.42m | 00:55AM1.38m | 2:16PM1.45m | 2:00AM1.12m | 3:05PM1.48m | 3:37AM0.92m | ||||||||
Low Tide | 3:18PM0.61m | 4:54AM-0.46m | 4:11PM0.57m | 5:35AM-0.36m | 5:06PM0.56m | 6:14AM-0.21m | 6:05PM0.57m | 6:52AM-0.02m | 7:12PM0.59m | 7:29AM0.19m | 8:31PM0.58m | 8:06AM0.41m | 10:06PM0.52m | 8:46AM0.60m | |||||||
 |  | | | | | | |  | | | | | | | | | | | | | |
 | — | — | 5:50 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 |
 | 7:58 | — | — | 7:58 | — | — | 7:57 | — | — | 7:57 | — | — | 7:55 | — | — | 7:55 | — | — | 7:54 | — | 7:54 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 21 | 22 | 22 | 21 | 22 | 22 | 21 | 21 | 21 | 20 | 21 | 22 | 20 | 21 | 21 | 21 | 22 | 22 | 21 | 22 |
Feels °C | 21 | 22 | 22 | 22 | 21 | 21 | 20 | 20 | 19 | 19 | 20 | 20 | 22 | 21 | 21 | 20 | 21 | 21 | 21 | 21 | 21 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SSW 13 | SW 12 | SW 16 | WSW 16 | WNW 8 | WNW 9 | W 8 | WNW 8 | W 8 | WSW 15 | SW 18 | SW 18 | S 11 | SSW 12 | SSW 11 | SSW 12 | SSW 11 | SW 16 | SW 16 | SW 16 |
| kJ | 57 | 113 | 77 | 130 | 171 | 104 | 126 | 112 | 90 | 63 | 144 | 366 | 252 | 116 | 361 | 331 | 508 | 206 | 416 | 492 | 400 |
Swell 2 Height (m) Direction Period (s) | SSW 12 | SW 18 | SW 17 | SSW 12 | W 7 | SW 16 | SW 16 | WSW 15 | SW 14 | SW 14 | W 8 | S 12 | S 12 | SSW 13 | SW 17 | SW 17 | WNW 15 | SW 16 | SSW 10 | SSW 9 | S 9 |
| kJ | 52 | 249 | 148 | 56 | 38 | 203 | 121 | 144 | 103 | 103 | 29 | 70 | 106 | 141 | 338 | 350 | 42 | 339 | 128 | 90 | 56 |
Swell 3 Height (m) Direction Period (s) | SW 18 | W 4 | WNW 5 | W 6 | SSW 12 | SSW 12 | SW 12 | SW 19 | SW 19 | SW 18 | SSW 11 | W 7 | WSW 13 | SW 16 | WNW 15 | WNW 15 | W 5 | WNW 5 | WNW 6 | W 5 | W 6 |
| kJ | 154 | 5 | 8 | 15 | 56 | 56 | 35 | 127 | 181 | 83 | 43 | 22 | 69 | 90 | 45 | 44 | 2 | 9 | 10 | 13 | 16 |
Wind waves Height (m) Direction Period (s) | WNW 3 | — | — | — | — | — | — | S 3 | SSW 4 | SSW 4 | S 3 | — | — | — | — | — | — | — | — | — | — |
| kJ | 3 | — | — | — | — | — | — | 3 | 4 | 4 | 2 | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 18 | 10 | 18 | 211 | 3 | 127 | 127 | 28 | 150 | 66 | 3 | 127 | 150 | 6 | 18 | 18 | 13 | 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.
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