Big Rock Surf Break

Lat Long: 32.82° N 117.28° W

Big Rock Surf Forecast and Surf Report

Issued: 10 am 29 Aug 2026 (local time)

Forecast update in  hr  min

Today's Big Rock sea temperature is
24.4°C
4.3° 

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 29 Aug 2026:

  • Most powerful swell: Saturday 29 Aug, 5PM (local time) - 3.5ft (1.1m), 16s period, SW swell with 653 kJ wave energy.

Best Forecast Surf Conditions for Big Rock this week:

The most powerful waves expected at Big Rock in the next 16 days are 1.1m 16s and forecast to arrive on Saturday (Aug 29) at 5PM. Winds are predicted to be onshore at the time the swell arrives.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 5PM (Sat 29th Aug)3.5ft (1.1m) 16s

Table - best surf conditions forecast for Big Rock over the next 16 days.


The Lowdown

G’day, Rusty here. Let’s run through what Big Rock’s got coming up over the next couple of weeks.

The water’s sitting at 76°, which is about 8° warmer than usual for this time of year – that’s very unusual, so you’ll be sweating in your wetsuit if you wear one.

We start off Saturday the 29th of August with a bit of early hope. Saturday morning brings a clean 4ft SW groundswell with a very long 16-second period. The combined energy is moderate (632) and the wind is light offshore from the west – that’s good for clean faces. The wave comment calls it marginal due to tide, but for the advanced crew, that morning could offer some nice, well-shaped waves. That’s the best of the early days. By Saturday afternoon, the wind jumps to 20 km/h from the WNW and the surf turns poor.

Sunday the 30th through to early September is a write-off. Swell hangs around 3ft to 4ft, but the wind is mostly cross-onshore and the surf is poor or marginal. Energy drops from the 600s down to the 200s by Tuesday the 1st of September. Small, weak and choppy.

Thursday the 3rd of September has a 4ft SSW swell with a 12-second period and light offshore wind, but tide and conditions still look marginal. Not a standout.

Friday the 4th brings a nice long-period 17-second SW groundswell at 3ft, but the cross-onshore breeze and poor conditions keep it from being anything special.

Monday the 7th of September gets more interesting. Morning shows a 5ft SSW swell with 13-second period and light cross-onshore wind. Energy is strong at 840. Still marginal though. By the afternoon, the swell hits 6ft with energy at 1031 – that’s strong. Still light cross-onshore, but only marginal conditions.

Then Tuesday the 8th of September is the big one. Morning delivers a 8ft SSW swell with a 13-second period and light cross-onshore wind. The combined energy is very strong at 1862. The wave comment says wind and tide are favourable, but the swell is too big for this break – experts only. Afternoon pumps to 12ft with energy at 3305 – same story. If you’re an expert and the wind stays light, that afternoon could be absolutely firing, but it’s serious.

Wednesday the 9th drops off fast – morning shows a 5ft SSW swell but the period is a short 7 seconds, so it’ll be weak and messy. Energy is moderate at 635. Afternoon fades to 2ft. From there, the surf stays small and poor through to the 13th, with only the odd marginal window.

So the standout is Tuesday the 8th of September – that’s your session if you’ve got the chops. The rest is mostly small, choppy or marginal.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 26°C on Sat morning, min 21°C on Sun night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 24°C on Tue afternoon, min 22°C on Tue morning). Wind will be generally light.

Saturday
29
Sunday
30
Monday
31
Tuesday
1
Wednesday
2
Thursday
3
Friday
4
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
0
2
1
0
2
0
0
1
0
0
0
0
0
1
1
0
2
1
1
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.1
SW
16
1.1
SW
16
1.1
SW
16
1
SW
15
1
SW
14
0.9
SW
14
0.7
SW
14
0.8
S
12
0.6
SW
13
0.8
SSW
11
0.9
SSW
11
0.8
SSW
10
1
SSW
13
1
SSW
12
0.7
SW
17
0.9
SSW
12
0.8
SW
17
0.9
SW
18
0.9
SW
17
1.1
SW
16
1.1
SW
16
Wave Graph
Metric surfscale
Energy kJ
581
653
612
424
407
341
193
180
140
158
214
136
307
320
273
239
423
516
465
589
553
Wind (km/h)
10
W
15
WNW
10
WSW
15
WSW
15
W
10
W
15
W
15
WNW
10
NNW
15
NW
15
NW
20
NNW
10
WNW
20
WNW
15
NW
15
WNW
15
WNW
10
WNW
10
W
15
WNW
5
NW
Wind State
on
on
cross-on
cross-on
on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
cross-on
cross-on
on
on
cross-on
High Tide
10:39AM1.53m
10:28PM1.64m
11:04AM1.60m
11:08PM1.47m
11:32AM1.65m
11:54PM1.27m
12:05PM1.67m
00:55AM1.06m
12:47PM1.67m
2:36AM0.89m
1:44PM1.64m
3:09PM1.63m
Low Tide
4:27PM0.36m
4:47AM0.13m
5:10PM0.31m
5:11AM0.27m
5:59PM0.30m
5:35AM0.43m
6:59PM0.30m
5:59AM0.60m
8:20PM0.30m
6:22AM0.75m
10:05PM0.25m
11:38PM0.12m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:20
6:22
6:22
6:22
6:24
6:24
6:24
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:17
7:15
7:15
7:14
7:13
7:10
7:09
 mm
Temp °C
26
25
24
24
24
22
23
22
22
23
24
23
24
24
23
24
23
22
23
23
22
Feels °C
28
26
26
24
23
22
23
20
22
21
22
21
24
23
22
23
21
21
23
22
22
  • Map Icons:
  • Break
  • 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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