Surf Forecasts:
Big Rock surf forecast from 4 Jul 2026:
- Best quality surf: Thursday 9 Jul, 2AM (local time) - 3.5ft (1.0m), 16s period, SW swell with glassy winds.
- Most powerful swell: Tuesday 7 Jul, 11AM (local time) - 3.5ft (1.1m), 18s period, SW swell with 694 kJ wave energy.
- Next surfable swell (1★+): Thursday 9 Jul, 2AM (local time) - 3.5ft (1.0m), 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 Thursday (Jul 09) at 2AM. The primary swell is predicted to be 1.0m and 16s period with a secondary swell of 0.9m 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 1.1m 18s and forecast to arrive on Tuesday (Jul 07) at 11AM. 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 (Thu 9th Jul) | 3.5ft (1.0m) 16s |
| Best Surf | 2AM (Thu 9th Jul) | 3.5ft (1.0m) 16s |
| Most Powerful | 11AM (Tue 7th Jul) | 3.5ft (1.1m) 18s |
Table - best surf conditions forecast for Big Rock over the next 16 days.
Updates in hr min s Forecast update imminent
G’day, Rusty here. Let’s break down what Big Rock has cookin’ over the next couple weeks.
Honestly, it’s a slow roll. No real juice until Tuesday the 7th, and even then it’s only just worth paddlin’ out. The water temp is 69°F, which is a touch warmer than normal for July, so you won’t need a thick suit.
Tuesday the 7th gives us a 4ft swell from the SW, with a period of 18 seconds – that’s long-period groundswell, decent energy (768). Wind is onshore from the W, so it’s not clean, but for a reef break, that long period will wrap in alright. It’s marginal and best left for advanced surfers. Crowds are often, so expect company.
Wednesday the 8th is your best shot. Swell is 3ft from the SW, period 16 seconds, and the morning brings a light cross-onshore from the SW at 6 mph. Combined energy is strong (923). It’s still only marginal, but it’s the closest to decent we get. Afternoon sees a light onshore from the WSW, might smooth it out a touch. If you’re an experienced surfer, this is your window.
From Thursday the 9th onward, it fades quick. Swell hangs around 3ft but winds turn cross and cross-onshore from the S and SSW, making it choppy. By Sunday the 12th, periods shorten and energy drops. The second week is a write-off – Monday the 13th to Sunday the 19th sees mostly 2ft to 3ft waves, with a day of 3ft but only 8-second period on the 14th. Winds are onshore or cross-onshore, and it’s more suited to kite surfing than paddle surfing during those sessions.
So, if you’re itching, Wednesday the 8th is your pick – but don’t expect a classic. It’s a long wait for not much.
Rusty out.
Short Range ForecastMostly dry. Warm (max 20°C on Sat afternoon, min 18°C on Sat morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 21°C on Wed morning, min 19°C on Tue morning). Wind will be generally light. | ||||||||||||||||||||
Saturday 4 | Sunday 5 | Monday 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | Friday 10 | |||||||||||||||
AM | 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 14 | SW 19 | SW 18 | SW 18 | SW 18 | SW 17 | SW 16 | SW 20 | SW 20 | SW 18 | SW 18 | SW 18 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 211 | 183 | 159 | 246 | 249 | 459 | 306 | 309 | 388 | 694 | 460 | 375 | 527 | 521 | 527 | 432 | 421 | 416 | 322 | 309 | 309 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | on | cross-on | cross-on | on | on | cross-on | on | on | on | cross-on | on | glassy | cross-on | cross | cross | cross | cross-on | cross |
High Tide | 1:38PM1.19m | 00:11AM1.43m | 2:15PM1.26m | 1:02AM1.24m | 2:54PM1.36m | 2:14AM1.05m | 3:38PM1.47m | 4:01AM0.89m | 4:26PM1.60m | 6:00AM0.86m | 5:19PM1.74m | 7:32AM0.92m | 6:12PM1.89m | ||||||||
Low Tide | 6:27PM0.78m | 7:19AM0.10m | 7:38PM0.76m | 7:52AM0.23m | 9:07PM0.68m | 8:29AM0.38m | 10:41PM0.51m | 9:14AM0.52m | 00:00AM0.28m | 10:12AM0.64m | 1:02AM0.03m | 11:20AM0.72m | 1:54AM-0.19m | ||||||||
 |  |  |  | | | | | | | | | | | | | | | | | | |
 | 5:45 | — | — | 5:46 | — | — | 5:46 | — | — | 5:47 | — | — | 5:47 | — | — | 5:48 | — | — | 5:48 | — | — |
 | — | 8:00 | — | — | 8:00 | — | — | 8:00 | — | — | 8:00 | — | — | 8:00 | — | — | 8:00 | — | — | 7:59 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 20 | 19 | 20 | 19 | 19 | 20 | 19 | 19 | 20 | 20 | 20 | 21 | 21 | 21 | 21 | 21 | 20 | 21 | 21 | 20 |
Feels °C | 19 | 19 | 19 | 19 | 17 | 18 | 19 | 17 | 19 | 20 | 19 | 20 | 21 | 21 | 22 | 21 | 20 | 20 | 19 | 20 | 20 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 14 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | W 6 | SW 18 | W 7 | W 7 | W 8 | W 8 | SW 16 | W 8 | W 10 | SW 16 | SW 15 | SW 15 | SW 15 |
| kJ | 211 | 169 | 151 | 246 | 249 | 459 | 306 | 248 | 47 | 694 | 74 | 121 | 186 | 124 | 527 | 177 | 151 | 416 | 322 | 309 | 309 |
Swell 2 Height (m) Direction Period (s) | SW 19 | SW 19 | SW 18 | SSW 13 | SW 13 | W 4 | W 5 | SW 20 | SW 16 | WNW 7 | SW 18 | SW 18 | SW 16 | SW 16 | W 8 | SW 16 | SW 16 | W 10 | W 9 | W 10 | W 9 |
| kJ | 183 | 183 | 159 | 116 | 85 | 10 | 20 | 309 | 352 | 60 | 460 | 375 | 527 | 521 | 95 | 432 | 421 | 117 | 108 | 116 | 57 |
Swell 3 Height (m) Direction Period (s) | WNW 5 | S 9 | SSW 9 | SSW 9 | SSW 9 | SW 22 | SW 21 | SW 12 | SW 20 | WNW 12 | SW 15 | SW 15 | SSW 19 | — | — | — | S 9 | — | S 11 | S 21 | — |
| kJ | 7 | 15 | 16 | 15 | 15 | 163 | 162 | 36 | 388 | 14 | 212 | 171 | 210 | — | — | — | 2 | — | 9 | 9 | — |
Wind waves Height (m) Direction Period (s) | — | WNW 5 | WNW 4 | W 4 | WNW 4 | — | — | W 6 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 7 | 5 | 3 | 5 | — | — | 32 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 13 | 18 | 18 | 18 | 18 | 18 | 0 | 3 | 66 | 6 | 66 | 66 | 6 |
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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