Blacks Beach Surf Break

Lat Long: 32.91° N 117.26° W

Blacks Beach Surf Forecast and Surf Report

Issued: 10 pm 23 Aug 2026 (local time)

Forecast update in  hr  min

Today's Blacks Beach sea temperature is
22.5°C
2.4° 

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


Blacks Beach surf forecast from 24 Aug 2026:

  • Best quality surf: Friday 28 Aug, 11PM (local time) - 3.5ft (1.1m), 17s period, SSW swell with glassy winds.
  • Most powerful swell: Saturday 29 Aug, 2AM (local time) - 4.5ft (1.3m), 17s period, SSW swell with 932 kJ wave energy.
  • Next surfable swell (1★+): Monday 24 Aug, 8AM (local time) - 2ft (0.6m), 18s period with SW swell.

Best Forecast Surf Conditions for Blacks Beach this week:

The surf forecast for Blacks Beach over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 24) at 8AM. The primary swell is predicted to be 0.6m and 18s period with a secondary swell of 0.7m and 14s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Blacks Beach in the next 16 days are 1.3m 17s and forecast to arrive on Saturday (Aug 29) at 2AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 13s period and expected on Wednesday (Aug 26) at 8AM.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Mon 24th Aug)2ft (0.6m) 18s
Best Surf11PM (Fri 28th Aug)3.5ft (1.1m) 17s
Most Powerful 2AM (Sat 29th Aug)4.5ft (1.3m) 17s

Table - best surf conditions forecast for Blacks Beach over the next 16 days.


The Lowdown

Alright, this is Rusty, and I’m looking at the charts for Blacks Beach (Big Island).

It’s a bit of a slow burner, to be honest. We’ve got a consistent run of small, long-period groundswell pushing in from the SSW, but the conditions are fighting it for most of the first week. The trades are blowing cross-onshore or onshore pretty much every day, so the surface is going to be messy. The combined swell energy is weak to moderate (mostly in the 200-400 range), and with that long 16-18 second period, the sets will be smooth but spread out. The water temperature doesn’t look out of the ordinary for this time of year.

Monday the 24th and Tuesday the 25th are both write-offs with poor surf and marginal tide problems. The swell stays around 2 ft to 3 ft, and those cross-onshore winds are just putting a lid on it.

The first hint of something better shows up on Friday the 28th. The morning is still marginal, but by the afternoon, the wind switches to a light onshore from the west, and the swell bumps up to 3 ft from the SSW with a long 19-second period. That combined energy jumps to 507 – moderate but with more push. Still not clean enough to get excited about though.

Saturday the 29th is where we start to see the best of this run. The morning has 3 ft of SSW groundswell with a 16-second period, and the wind is light and onshore from the west. The afternoon gets even better with 4 ft waves and the combined energy creeping up to 810. It’s still marginal due to that cross-onshore breeze, but for Blacks Beach, which is an exposed reef setup, that long-period swell will wrap in nicely. This is probably the pick of the first week if you’re desperate for a paddle.

The following week, from September 1st, we get a bit of a lull before a more promising pattern shows up around Thursday the 3rd and Friday the 4th. Swell heights climb to 4 ft from the SSW, with periods of 16-17 seconds and combined energy hitting three digits around 860-877. Winds remain light onshore from the west to west-northwest, so it’s going to be a little bumpy but definitely surfable. The stand-out moment might be Saturday the 5th, where we see 4 ft of SSW swell with a 16-second period and light cross-onshore breezes. The energy is strong (874), but the wind is just a whisper.

Just be aware that by Tuesday the 8th, the forecast shows a jump to 8 ft. That’s getting into expert-only territory for Blacks Beach, especially with that short 8-second period. It’s going to be a lot of lumpy, close-out energy, and the cross-onshore breeze will make it ugly. That might be more of a kite-surfing setup than a clean wave for paddling.

Overall, the best sessions look like Saturday the 29th of August and Saturday the 5th of September, both mornings for the cleanest conditions. Keep an eye on the wind shifts.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 26°C on Tue morning, min 22°C on Sun night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Warm (max 27°C on Fri morning, min 23°C on Wed night). Wind will be generally light.

Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
0
0
2
1
1
2
0
1
0
0
0
2
1
2
2
1
2
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.8
SSW
14
0.6
SW
18
0.6
SW
17
0.8
SW
17
0.7
SW
16
0.6
SW
16
0.6
SW
16
0.8
SW
16
0.6
SW
16
0.6
SW
15
0.6
SW
14
0.6
SW
14
0.7
SSW
18
0.8
SSW
16
0.8
SSW
19
1.3
SSW
17
1
SSW
16
1.2
SSW
16
1.2
SSW
16
Wave Graph
Metric surfscale
Energy kJ
273
249
175
330
264
208
203
302
196
171
132
130
270
343
419
932
566
733
697
Wind (km/h)
5
W
10
SW
10
WSW
5
WNW
10
W
10
W
5
SSW
15
SW
15
SSW
5
SSW
10
SW
10
SW
0
SW
10
W
10
W
5
WSW
10
W
10
W
5
WSW
Wind State
glassy
cross-on
cross-on
glassy
on
on
glassy
cross-on
cross
cross-on
cross-on
cross-on
glassy
on
on
on
on
on
cross-on
High Tide
9:01AM1.19m
7:40PM1.74m
9:17AM1.24m
8:14PM1.81m
9:35AM1.31m
8:46PM1.84m
9:55AM1.38m
9:19PM1.82m
10:16AM1.46m
9:52PM1.76m
10:39AM1.53m
10:28PM1.64m
Low Tide
2:23AM0.01m
1:35PM0.78m
2:50AM-0.04m
2:08PM0.68m
3:14AM-0.07m
2:40PM0.58m
3:38AM-0.08m
3:14PM0.49m
4:01AM-0.05m
3:49PM0.42m
4:24AM0.02m
4:27PM0.36m
4:47AM0.13m
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:18
6:18
6:18
6:20
6:20
6:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:23
7:22
7:21
7:20
7:19
7:17
 mm
Temp °C
24
25
25
23
26
26
25
26
25
24
25
25
24
27
26
25
27
26
24
Feels °C
27
26
26
25
26
26
26
27
25
25
26
25
26
28
26
27
27
26
26
  • 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 Blacks Beach Surf forecast

The above surf forecast table for Blacks Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Blacks Beach can be found by selecting the local surf guide option on the grey menu. Our Blacks Beach 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 (Blacks Beach) 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 Blacks Beach 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.

Blacks Beach is 13 km (8 miles) from the city of 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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