Big Rock Surf Break

Lat Long: 32.82° N 117.28° W

Big Rock Surf Forecast and Surf Report

Issued: 4 am 14 Aug 2026 (local time)

Forecast update in  hr  min

Today's Big Rock sea temperature is
23.3° C
3.2° 

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 14 Aug 2026:

  • Best quality surf: Friday 14 Aug, 8AM (local time) - 2.5ft (0.8m), 15s period, SW swell with glassy winds.
  • Most powerful swell: Saturday 15 Aug, 2AM (local time) - 3.5ft (1.1m), 17s period, SW swell with 742 kJ wave energy.
  • Next surfable swell (1★+): Friday 14 Aug, 8AM (local time) - 2.5ft (0.8m), 15s 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 (Aug 14) at 8AM. The primary swell is predicted to be 0.8m and 15s period with a secondary swell of 0.5m and 19s. 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 17s and forecast to arrive on Saturday (Aug 15) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Fri 14th Aug)2.5ft (0.8m) 15s
Best Surf 8AM (Fri 14th Aug)2.5ft (0.8m) 15s
Most Powerful 2AM (Sat 15th Aug)3.5ft (1.1m) 17s

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


The Lowdown

G’day, Rusty here. Lookin’ at the next sixteen days, I gotta be straight with ya – it’s a long, flat wait ahead. The first solid stretch of any kind of surf worth paddling out for doesn’t turn up until the very end of August. We’re talkin’ nearly two weeks of nothin’ but tiny, weak swells and not a single window where the stars align. The break we’re stuck with is Big Rock, a reef setup that needs a good SW groundswell to fire, but the wind’s almost always blowin’ straight onshore – that’s a WNW wind, and it’s gonna mess up whatever little bump we get.

From Friday, August 14, right through to Wednesday, August 26, it’s grim. Swell heights hover around 1ft to 4ft, mostly from the SW, with periods mostly in the 13 to 18 second range – so there’s some decent energy in there, but it’s all wasted. The combined swell energy sits between 160 and 712 (moderate), but it doesn’t matter ‘cause the wind is onshore or cross-onshore almost the whole time. The water temp is about average for this time of year, nothin’ to write home about. You’ll see plenty of “poor surf conditions” in the notes. It’s just not happenin’.

Then, finally, on Thursday, August 27, things start to stir. We get a spike – morning sees 6ft from the SSW with a 14-second period and a combined energy of 1329 (strong). The wind is light cross-onshore, but still clean enough to be interesting. By afternoon, it bumps to 6ft from the SSW, 14 seconds, energy at 1628 (strong). It’s still a light onshore breeze, but the notes say “marginal surf forecast or questionable tide conditions,” so it’s not a total write-off.

But the real standout – the one you’ve been waitin’ for – is Friday, August 28. Big Rock gets a solid 7ft swell from the SW, period around 14 seconds, and the combined energy is crankin’ at 1828 (very strong) in the morning and 1599 in the afternoon. The wind is a light breeze, cross-onshore but light enough that it’ll be glassy in places. Now, here’s the thing – at 7ft, this is expert territory only. It’s a big, powerful groundswell hittin’ a reef break, so only the experienced crew should even think about it. The notes actually say “wind and tide favorable, but the swell is predicted to be too big for this break,” which tells me the wave is gonna be a heavy, jackin’ beast. If you’re a solid charger, this is your day. Crowds are likely at Big Rock – it’s a spot that’s “often” busy, and on a day like this, you can bet the locals will be out. The swell direction (SW) matches the optimum direction for the break (W), so it’s got proper shape potential, but it’ll be a handful.

Saturday, August 29, it drops back to 6ft from the SW with an 11-second period and energy of 787 (moderate). The wind is light and onshore again, so it’s back to a marginal, messy vibe.

So if you’re a punter lookin’ for a fun, clean wave, you’re outta luck for the whole sixteen days. The only real action is that big Friday, August 28 session at Big Rock for the experts. For everyone else, it’s a dry spell. Keep an eye on the forecasts – this place tends to have better runs than this.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 22°C on Fri morning, min 20°C on Fri night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 23°C on Mon morning, min 21°C on Mon morning). Wind will be generally light.

Friday
14
Saturday
15
Sunday
16
Monday
17
Tuesday
18
Wednesday
19
Thursday
20
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
1
2
0
0
1
0
0
1
0
0
2
0
0
2
0
0
2
1
0
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.6
SW
18
0.6
SW
18
1.1
SW
17
0.9
SW
16
1.1
SW
16
1.1
SW
16
1
SW
15
0.9
SW
14
0.9
SW
14
0.8
SW
14
0.8
SW
14
0.8
SW
14
0.6
SW
16
0.6
SW
16
0.8
SW
15
0.8
SW
16
0.8
SW
16
0.7
SW
15
0.7
SW
14
0.7
SW
14
0.6
SW
14
Wave Graph
Metric surfscale
Energy kJ
263
255
742
432
560
546
444
350
350
297
248
238
208
219
255
291
291
217
211
211
153
Wind (km/h)
15
WSW
15
W
10
NNW
20
WNW
15
WNW
15
NW
15
WNW
20
NW
15
NNW
15
W
15
WNW
5
NW
10
WNW
15
W
5
W
10
W
10
WSW
5
SW
10
WSW
10
WSW
5
SW
Wind State
on
on
cross-on
cross-on
on
cross-on
on
cross-on
cross
on
cross-on
glassy
on
on
glassy
on
on
glassy
cross-on
on
glassy
High Tide
11:17AM1.52m
10:58PM1.76m
11:51AM1.56m
11:43PM1.52m
12:24PM1.56m
00:31AM1.27m
1:01PM1.54m
1:34AM1.04m
1:42PM1.49m
3:28AM0.88m
2:37PM1.45m
3:54PM1.43m
Low Tide
4:55PM0.37m
5:30AM0.02m
5:45PM0.38m
5:59AM0.22m
6:41PM0.41m
6:27AM0.42m
7:47PM0.45m
6:50AM0.62m
9:15PM0.47m
7:07AM0.79m
11:03PM0.41m
00:25AM0.30m
clear
clear
part cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:11
6:11
6:11
6:13
6:13
6:13
6:15
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:35
7:34
7:32
7:31
7:30
7:30
7:29
 mm
Temp °C
22
21
20
21
21
20
21
22
21
23
23
22
23
23
22
23
23
22
23
23
22
Feels °C
22
21
20
21
21
20
21
21
20
23
22
22
24
23
23
24
23
24
24
23
24
  • 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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