Big Rock Surf Break

Lat Long: 32.82° N 117.28° W

Big Rock Surf Forecast and Surf Report

Issued: 10 am 02 Sep 2026 (local time)

Forecast update in  hr  min

Today's Big Rock sea temperature is
23.9°C
3.7° 

Big Rock surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Big Rock surf forecast from 3 Sep 2026:

  • Best quality surf: Friday 4 Sep, 8AM (local time) - 3.5ft (1.0m), 17s period, SW swell with glassy winds.
  • Most powerful swell: Sunday 6 Sep, 11AM (local time) - 6ft (1.9m), 14s period, SSW swell with 1,393 kJ wave energy.
  • Next surfable swell (1★+): Friday 4 Sep, 8AM (local time) - 3.5ft (1.0m), 17s 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 Friday (Sep 04) at 8AM. The primary swell is predicted to be 1.0m and 17s period with a secondary swell of 0.7m and 6s. 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 1.9m 14s and forecast to arrive on Sunday (Sep 06) at 11AM. Winds are predicted to be cross-shore at the time the swell arrives.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Fri 4th Sep)3.5ft (1.0m) 17s
Best Surf 8AM (Fri 4th Sep)3.5ft (1.0m) 17s
Most Powerful11AM (Sun 6th Sep)6ft (1.9m) 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 coming our way.

Honestly, the next 16 days are a tough watch for Big Rock. There’s no real green light in the whole run. The water is a balmy 75°, which is a whopping 7° warmer than usual for this time of year – that’s very unusual, feels like a bath out there.

The first few days are a write-off. On Wednesday the 2nd, we’ve got a clean 3ft SSW swell with a 13-second period, but the wind is blowing straight onshore at 6 mph, and the report says "poor surf conditions." The combined energy is weak (379). That’s a no-go. Thursday the 3rd is more of the same, with 2ft to 3ft SSW swell, but the wind picks up to 12 mph, just making a mess of it.

Friday the 4th offers a glimmer that’s not really worth chasing. The swell bumps up to 3ft from the SW, period is a nice 17 seconds, and the energy climbs to 724. But the wind is cross-onshore, and it’s only rated as "marginal." It’s small, clean-lined, but the wind will mess up the face.

Saturday the 5th is probably the best of a bad lot, but it’s still not great. The morning sees a 4ft S swell with a 14-second period, and the wind goes light offshore from the W at 3 mph. The combined energy is 957. That offshore wind is a major positive, so it will be clean. But the size is small, and the consistency is "fairly consistent" here, so you might get a few. It’s a "marginal" call, but if you’re desperate, that’s your window.

Sunday the 6th sees the swell build to 6ft from the SSW, with energy at 1401 – that’s moderate to strong. But the wind swings to a cross-shore NNW at 9 mph, and it’s described as "gentle cross-shore with slight cross-chop." For a reef break like Big Rock, that’s not ideal. It’s going to be lumpy. This is still only a "marginal" call.

After that, it’s a long grind. From Monday the 9th all the way through to the 17th, the swell drops and the wind stays onshore or cross-onshore. The waves are tiny, mostly under 3ft, and the conditions are consistently "poor." There’s a brief spike on the morning of the 15th with a 3ft W swell, but the period is a short 8 seconds, and the wind is cross-onshore again. Not worth a paddle.

The very end of the run on Thursday the 17th afternoon shows a 3ft SW swell with a 21-second period – that’s a very long period groundswell. The energy is 727, and the wind is light offshore. But it’s still only scored as "marginal," and the swell is tiny. For a point or reef, that long period can be magic, but here at Big Rock it might just close out or be too straight.

So, the standout? It’s the Saturday morning (5th) with the offshore wind. That’s the only time the stars align even slightly. The rest of the window is a full-on gap of poor conditions. You’d be better off waiting for the next system.

Rusty, signing off.

Short Range Forecast

Mostly dry. Warm (max 22°C on Fri afternoon, min 19°C on Wed morning). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 24°C on Sun morning, min 21°C on Sat morning). Wind will be generally light.

Wednesday
2
Thursday
3
Friday
4
Saturday
5
Sunday
6
Monday
7
Tuesday
8
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
1
0
0
2
1
0
1
2
1
2
3
1
2
1
0
2
1
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.8
SSW
13
0.8
SSW
13
0.6
SW
17
0.6
SW
15
0.8
SW
18
0.9
SW
18
1
SW
17
1.1
SW
16
1.1
SW
16
1.2
S
14
1.3
S
13
1.6
SSW
14
1.9
SSW
14
1.8
SSW
14
1.7
SSW
14
1.7
SSW
13
1.6
SSW
12
1.5
SSW
13
1.5
SSW
12
1.5
SSW
11
1.4
SW
13
Wave Graph
Metric surfscale
Energy kJ
212
215
230
186
366
510
542
596
532
534
609
893
1393
1208
1189
894
715
756
658
583
668
Wind (km/h)
10
W
15
WNW
10
NW
15
W
20
WNW
5
WNW
10
SW
20
WNW
10
NNW
5
W
10
W
10
NW
15
NNW
15
NW
15
NNW
15
NW
15
WNW
10
NW
15
WNW
15
WNW
15
NW
Wind State
on
on
cross-on
on
on
cross-on
cross-on
on
cross-on
on
on
cross-on
cross
cross-on
cross-on
cross-on
cross-on
cross-on
on
cross-on
cross-on
High Tide
12:47PM1.67m
2:36AM0.89m
1:44PM1.64m
3:09PM1.63m
7:22AM1.02m
4:44PM1.68m
7:45AM1.14m
6:01PM1.78m
8:11AM1.26m
7:02PM1.88m
8:37AM1.37m
7:53PM1.94m
Low Tide
8:20PM0.30m
6:22AM0.75m
10:05PM0.25m
11:38PM0.12m
9:52AM0.98m
00:42AM-0.03m
11:47AM0.90m
1:30AM-0.14m
12:54PM0.73m
2:10AM-0.20m
1:46PM0.55m
2:45AM-0.20m
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
cloud
cloud
cloud
part cloud
clear
clear
clear
clear
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:24
6:24
6:24
6:26
6:26
6:26
6:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:13
7:10
7:09
7:08
7:07
7:06
7:05
 mm
Temp °C
21
21
21
21
21
20
21
22
21
23
23
23
24
24
23
24
24
23
24
23
22
Feels °C
21
19
20
21
19
19
21
21
21
24
23
23
22
23
23
23
22
22
23
21
21
  • Map Icons:
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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