
Surf Forecasts:
Big Rock surf forecast from 27 Jul 2026:
- Best quality surf: Monday 27 Jul, 2AM (local time) - 3.5ft (1.1m), 18s period, SW swell with glassy winds.
- Most powerful swell: Thursday 30 Jul, 8PM (local time) - 5ft (1.6m), 14s period, SSW swell with 1,002 kJ wave energy.
- Next surfable swell (1★+): Monday 27 Jul, 2AM (local time) - 3.5ft (1.1m), 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 Monday (Jul 27) at 2AM. The primary swell is predicted to be 1.1m and 18s period with a secondary swell of 0.7m and 8s. 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 1.6m 14s and forecast to arrive on Thursday (Jul 30) at 8PM. 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 (Mon 27th Jul) | 3.5ft (1.1m) 18s |
| Best Surf | 2AM (Mon 27th Jul) | 3.5ft (1.1m) 18s |
| Most Powerful | 8PM (Thu 30th Jul) | 5ft (1.6m) 14s |
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’s on offer.
Honestly, right now the surf is a bit of a tease. We’ve got some swell running, but the wind is just not playing ball for the next week or so. It’s a real shame, because the ocean is putting out some decent energy.
The first real chance to get wet will be from Monday the 28th of July. The swell is hanging around the 4 ft, coming from the SW, with a long period of 17 seconds. That’s proper groundswell energy. The combined energy is moderate (1099). But here’s the kicker – the wind is cross-onshore. It’s not howling, but it’s going to chop things up. It’s a frustrating one to watch. This pattern pretty much holds through to about Thursday the 31st of July, with heights between 4 ft and 5 ft, but the wind stays messy. The period is dropping from 14 to 13 seconds, so the wave quality is slipping.
Now, if you look at the end of the week and into the start of August, the swell starts to fade. By Friday the 1st of August, we’re looking at 4 ft to 4 ft, with the period dropping to 11 seconds. The wind goes onshore, and the energy is dropping (530 then 390). It’s not looking good. After that, it’s a real dry spell. From Sunday the 2nd of August all the way through to Tuesday the 11th of August, the swell is tiny, mostly under 3 ft, with poor energy values (mostly under 300) and the wind is generally onshore or cross-onshore. There’s a solid 10-day gap there with nothing worth paddling out for.
The absolute standout, if you can call it that, is Big Rock. It’s a reef break, exposed to the W, and that's the best direction for it. The best of the bunch is Monday the 28th of July morning. The swell is 4 ft from the SW, but it’s a long-period 17-second swell. That kind of period is great for a reef setup like this; it’ll put some shape into the faces. The wind is cross-onshore though, so it’s not going to be glassy perfection. The water temperature is about average for the time of year. It’s an advanced wave, and it *often* gets crowded, so you’ll have company. It’s the best we’ve got, but it’s a tough call.
For the rest of the window, it’s a flat spell. This kind of dry run is fairly normal for the area, so don’t be too surprised. Forecasts can change, but for now, the boards are staying in the car.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Mon morning, min 20°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 24°C on Sat morning, min 20°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | ||||||||||||||
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 18 | SW 18 | SW 16 | SW 17 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SSW 16 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | SSW 11 | SW 13 |
Wave Graph | |||||||||||||||||||
694 | 901 | 511 | 717 | 962 | 908 | 767 | 748 | 573 | 649 | 813 | 911 | 947 | 892 | 793 | 722 | 496 | 347 | 171 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | glassy | cross-on | on | glassy | on | on | cross-on | on | on | cross-on |
High Tide | 9:59AM1.13m | 8:31PM1.83m | 10:21AM1.16m | 9:04PM1.87m | 10:44AM1.20m | 9:36PM1.87m | 11:08AM1.25m | 10:08PM1.82m | 11:34AM1.30m | 10:41PM1.73m | 12:01PM1.36m | 11:17PM1.58m | |||||||
Low Tide | 3:22AM-0.11m | 2:17PM0.77m | 3:50AM-0.14m | 2:51PM0.72m | 4:17AM-0.16m | 3:25PM0.67m | 4:43AM-0.15m | 4:01PM0.63m | 5:08AM-0.10m | 4:39PM0.61m | 5:34AM-0.02m | 5:22PM0.59m | |||||||
— | 5:58 | — | — | 5:58 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | |
— | — | 7:51 | — | — | 7:50 | — | — | 7:50 | — | — | 7:49 | — | — | 7:47 | — | — | 7:46 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 23 | 23 | 22 | 22 | 22 | 21 | 22 | 22 | 21 | 22 | 23 | 22 | 23 | 23 | 23 | 24 | 24 | 22 |
Feels °C | 24 | 24 | 24 | 23 | 22 | 22 | 22 | 23 | 22 | 22 | 22 | 23 | 23 | 23 | 23 | 23 | 25 | 25 | 23 |
Swell 1 Height (m) Direction Period (s) | SW 18 | SW 18 | SW 16 | SW 17 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SSW 16 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | SSW 11 | SSW 10 |
694 | 901 | 511 | 717 | 962 | 908 | 767 | 748 | 573 | 649 | 813 | 911 | 947 | 892 | 793 | 722 | 496 | 347 | 166 | |
Swell 2 Height (m) Direction Period (s) | W 8 | WNW 7 | WNW 8 | W 8 | WNW 7 | W 7 | W 7 | W 7 | S 14 | S 14 | W 7 | W 7 | W 9 | W 8 | W 8 | W 7 | W 6 | W 6 | SW 13 |
57 | 73 | 75 | 55 | 73 | 70 | 38 | 49 | 196 | 236 | 24 | 38 | 40 | 33 | 29 | 28 | 19 | 28 | 171 | |
Swell 3 Height (m) Direction Period (s) | SSW 11 | S 11 | SW 19 | S 8 | S 19 | S 17 | S 15 | S 14 | W 7 | W 7 | SSE 9 | WNW 8 | — | — | — | W 21 | SW 20 | SW 19 | W 6 |
47 | 21 | 299 | 6 | 64 | 151 | 106 | 144 | 54 | 27 | 17 | 44 | — | — | — | 9 | 15 | 15 | 23 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 127 | 191 | 6 | 6 | 127 | 4 | 127 | 211 | 0 | 18 | 18 | 0 | 18 | 18 | 18 | 18 | 18 | 55 |
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.










