Surf Forecasts:
Big Rock surf forecast from 14 Sep 2026:
- Best quality surf: Monday 21 Sep, 2AM (local time) - 3ft (0.9m), 17s period, SW swell with glassy winds.
- Most powerful swell: Monday 21 Sep, 5AM (local time) - 3ft (0.9m), 17s period, SW swell with 487 kJ wave energy.
- Next surfable swell (1★+): Wednesday 16 Sep, 2AM (local time) - 1.5ft (0.5m), 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 Wednesday (Sep 16) at 2AM. The primary swell is predicted to be 0.5m and 16s period with a secondary swell of 0.6m 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 0.9m 17s and forecast to arrive on Monday (Sep 21) at 5AM. Winds are predicted to be glassy at the time the swell arrives.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Wed 16th Sep) | 1.5ft (0.5m) 16s |
| Best Surf | 2AM (Mon 21st Sep) | 3ft (0.9m) 17s |
| Most Powerful | 5AM (Mon 21st Sep) | 3ft (0.9m) 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’s in store for Big Rock.
To be straight with you, this forecast is a bit of a bummer. There’s really no proper surf on the table across the entire 16-day window. The swell is small and the wind is almost always in the way. We go straight into it on Monday the 14th of September with a 4ft W swell, but it’s let down by a grumpy cross-onshore breeze at 15 km/h, making things pretty chopped up and unappealing. The combined energy reading (405) is moderate, but it doesn’t matter much with that wind messing it up.
Tuesday the 15th drops off significantly. Swell fades to 2ft with a very long 16-second period from the SW, which sounds promising for shape, but again that cross-onshore wind (15 km/h) ruins the surface. Combined energy is still moderate (281), but it’s not worth paddling out for.
From Wednesday the 16th right through the end of the month, it’s a consistent story of poor surf. Swell heights hover between 1ft and 3ft, mostly from the SW, with periods ranging from 13 to 20 seconds. The energy readings bounce around between 267 and 620 – moderate at best – but the wind is the real killer. It’s either light cross-onshore or straight onshore from the W or NW at 10 to 20 km/h. A few ‘marginal’ flags pop up, like Wednesday morning the 16th and a few spots around the 20th and 21st, but the score is still a 1 or 2 out of 10. Nothing even close to a standout.
Bottom line: there’s a long, flat run here with no real recommendation for a surf at Big Rock for the next 16 days. If the wind ever swings offshore and that SW groundswell decides to show with a bit more height, we could see something, but right now the forecasts are saying stay home. Keep an eye on it – things can change, but for now, it’s a skip.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Mon afternoon, min 19°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 21°C on Fri morning, min 19°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | ||||||||||||||
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) | W 10 | W 8 | W 10 | SW 17 | SW 16 | SSW 20 | SW 16 | SW 17 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 19 | SW 19 | SW 19 | SW 18 | SW 18 | SW 18 |
Wave Graph  | |||||||||||||||||||
 kJ | 183 | 195 | 183 | 147 | 161 | 149 | 121 | 358 | 254 | 367 | 280 | 255 | 214 | 303 | 303 | 183 | 379 | 375 | 375 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross | cross-on | cross-on | glassy | cross-on | on | cross-on | on | cross-on | cross-on | on | on | cross-on | on | on | glassy |
High Tide | 11:28PM1.34m | 11:22AM1.67m | 00:17AM1.15m | 11:51AM1.60m | 1:23AM0.98m | 12:23PM1.51m | 1:09PM1.41m | 2:38PM1.34m | 8:04AM1.10m | 4:32PM1.35m | |||||||||
Low Tide | 5:04AM0.45m | 6:10PM0.23m | 5:24AM0.62m | 7:05PM0.30m | 5:36AM0.78m | 8:21PM0.37m | 10:08PM0.39m | 11:39PM0.32m | 10:40AM1.07m | 00:33AM0.23m | |||||||||
 |  | | | | | | |  | | | | | | | | | | | |
 | — | 6:31 | — | — | 6:31 | — | — | 6:33 | — | — | 6:33 | — | — | 6:33 | — | — | 6:35 | — | — |
 | — | — | 6:57 | — | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 21 | 22 | 21 | 21 | 21 | 20 | 20 | 21 | 20 | 20 | 20 | 20 | 21 | 21 | 21 | 21 | 21 | 21 |
Feels °C | 23 | 21 | 22 | 21 | 21 | 20 | 21 | 20 | 20 | 21 | 20 | 19 | 20 | 21 | 20 | 21 | 21 | 20 | 22 |
Swell 1 Height (m) Direction Period (s) | W 10 | W 8 | W 10 | W 9 | W 9 | W 9 | W 8 | SW 17 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 19 | SW 13 | W 6 | SW 18 | SW 18 | SW 18 |
| kJ | 183 | 195 | 183 | 99 | 97 | 78 | 51 | 358 | 254 | 367 | 280 | 255 | 214 | 303 | 144 | 32 | 379 | 375 | 375 |
Swell 2 Height (m) Direction Period (s) | SW 13 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | W 8 | W 6 | W 6 | SW 21 | SW 21 | S 10 | SW 14 | SW 19 | SSW 13 | W 6 | W 6 | W 6 |
| kJ | 61 | 150 | 150 | 147 | 161 | 121 | 121 | 29 | 18 | 9 | 116 | 162 | 52 | 162 | 303 | 116 | 35 | 24 | 34 |
Swell 3 Height (m) Direction Period (s) | SW 19 | SW 13 | SW 12 | SW 12 | SW 12 | SSW 20 | SW 18 | S 9 | S 9 | S 9 | W 12 | S 9 | SW 21 | W 6 | W 6 | SW 19 | SW 13 | SW 13 | SW 12 |
| kJ | 127 | 60 | 55 | 38 | 23 | 149 | 83 | 14 | 13 | 15 | 25 | 13 | 153 | 15 | 25 | 183 | 84 | 82 | 73 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | WNW 12 | WNW 4 | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 47 | 5 | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 3 | 3 | 3 | 3 | 3 | 151 | 0 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 15 | 18 | 18 | 0 |
Best forecast wave conditions in San Diego County | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Big Rock surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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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