Diamond Street Surf Break

Lat Long: 32.80° N 117.26° W

Issued: 4 am 02 Jul 2026 (local time)

Forecast update in  hr  min

Today's Diamond Street sea temperature is
20.2° C

1.7°C warmer than normal for this time of year

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


Diamond Street surf forecast from 2 Jul 2026:

  • Best quality surf: Wednesday 8 Jul, 5AM (local time) - 3.5ft (1.0m), 18s 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★+): Saturday 4 Jul, 5AM (local time) - 2.5ft (0.8m), 14s period with SW swell.

Best Forecast Surf Conditions for Diamond Street this week:

The surf forecast for Diamond Street over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Jul 04) at 5AM. The primary swell is predicted to be 0.8m and 14s period with a secondary swell of 0.5m and 5s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Diamond Street 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 TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Sat 4th Jul)2.5ft (0.8m) 14s
Best Surf 5AM (Wed 8th Jul)3.5ft (1.0m) 18s
Most Powerful11AM (Tue 7th Jul)3.5ft (1.1m) 18s

Table - best surf conditions forecast for Diamond Street over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Alright folks, Rusty here. Let’s be straight with you – this forecast for Diamond Street is a long, tough stretch. We’re looking at a 16-day run starting on July 2nd, and the honest truth is there isn’t a single day that qualifies as a proper standout. The surf quality is poor to marginal for the entire period, so keep the expectations in check.

Right from the start, on Thursday morning July 2nd, we’ve got a small 3ft SW swell, but it’s cross-on wind and the energy is weak (400). The water is running at 68°F, which is a touch warmer than usual for this time of year. That’s about the only positive thing I can say. This grim pattern of small, cross-on junk continues through the first week. The combined swell energy stays in the high hundreds, never breaking into anything meaningful, and those long periods (17-20 seconds) are wasted here as the swell is too small and the wind is never clean. By Tuesday July 7th, the wind finally swings more onshore from the WSW, but we’re still stuck with marginal surf and a tiny 3 to 4ft swell. The wind is light, but those numbers just don’t get the heart pumping.

Into the second week it’s more of the same. July 9th Thursday morning is the best this break will see, a marginal 2/10 day with a 3ft SW swell and a touch of light cross-on. The combined energy sits at 626 – moderate, but nothing to get excited about. From there it’s a long, slow decline. By the time we hit July 15th and 16th, the swell drops to a pathetic 2ft, and the combined energy falls below 300. Even the offshore winds on a few afternoons can’t save this. Honestly, this setup looks more interesting for a kite surfer than a paddle surfer on many of these days, given the strong cross-on winds and lack of any real power.

I know it’s a rough outlook, but when a break is rated as fairly consistent, blank runs like this aren’t the norm. Forecasts can change.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 19°C on Fri afternoon, min 17°C on Thu morning). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 20°C on Tue afternoon, min 17°C on Mon night). Wind will be generally light.

Thursday
2
Friday
3
Saturday
4
Sunday
5
Monday
6
Tuesday
7
Wednesday
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
1
0
0
1
0
0
2
1
1
2
1
1
2
1
1
3
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
SW
17
0.7
SSW
18
0.6
SW
15
0.9
SW
16
0.8
SW
16
0.7
SW
14
0.7
SW
14
0.5
SW
19
0.5
SW
18
0.6
SW
18
0.6
SW
18
0.9
SW
17
0.8
SW
16
0.6
SW
20
0.7
SW
20
1.1
SW
18
0.9
SW
18
0.8
SW
18
1
SW
16
1
SW
16
1
SW
16
Wave Graph
Metric surfscale
Energy kJ
346
270
176
362
299
211
211
183
159
246
249
459
306
309
388
694
460
375
527
521
527
Wind (km/h)
15
W
20
WNW
10
NW
15
W
15
WNW
10
WNW
15
WNW
15
WNW
5
WNW
15
W
15
WNW
10
NW
15
W
15
WNW
10
WNW
15
WSW
10
WSW
5
WSW
15
WSW
10
W
5
W
Wind State
cross-on
cross-on
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
on
on
on
glassy
High Tide
12:17PM1.16m
10:58PM1.75m
12:52PM1.19m
11:34PM1.64m
1:29PM1.24m
00:14AM1.49m
2:07PM1.31m
1:04AM1.30m
2:50PM1.40m
2:16AM1.09m
3:37PM1.51m
4:01AM0.93m
4:28PM1.64m
Low Tide
5:08PM0.74m
6:34AM-0.10m
5:51PM0.75m
7:06AM-0.02m
6:45PM0.76m
7:39AM0.09m
7:54PM0.74m
8:13AM0.22m
9:19PM0.66m
8:52AM0.37m
10:52PM0.51m
9:40AM0.52m
00:14AM0.28m
clear
clear
clear
part cloud
clear
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>
5:43
5:45
5:45
5:46
5:46
5:47
5:47
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:00
8:00
8:00
8:00
8:00
8:00
8:00
 mm
Temp °C
17
18
17
18
19
18
19
19
18
18
18
18
19
19
19
19
20
19
20
20
19
Feels °C
18
16
16
17
18
17
18
18
17
18
16
17
18
17
19
18
20
19
20
19
19
Swell 1
Height (m)
Direction
Period (s)
0.8
SW
17
0.7
SSW
18
0.6
SW
15
0.9
SW
16
0.8
SW
16
0.7
SW
14
0.7
SW
14
0.6
SW
14
0.6
SW
14
0.6
SW
18
0.6
SW
18
0.9
SW
17
0.8
SW
16
0.8
W
7
0.9
W
7
1.1
SW
18
0.9
WNW
7
1
W
7
1
SW
16
1
SW
16
1
SW
16
Energy kJ
346
270
176
362
299
211
211
169
153
246
249
459
306
57
70
694
84
94
527
521
527
Swell 2
Height (m)
Direction
Period (s)
0.4
WNW
10
0.5
SW
15
0.5
W
5
0.5
W
5
0.3
S
10
0.5
W
5
0.5
SW
19
0.5
SW
19
0.5
SW
18
0.6
SSW
13
0.5
SW
13
0.7
W
6
0.7
W
6
0.7
SW
16
0.8
SW
16
0.9
WNW
7
0.9
SW
18
0.8
SW
18
1
W
7
0.9
WNW
7
0.7
W
10
Energy kJ
32
104
11
12
18
11
183
183
159
116
85
31
38
251
299
82
460
375
112
89
88
Swell 3
Height (m)
Direction
Period (s)
0.3
SSW
11
0.3
SSW
11
0.3
S
11
0.3
S
11
0.2
SSW
21
0.3
S
10
0.4
WNW
5
0.3
S
9
0.5
W
4
0.4
WNW
5
0.3
SSW
9
0.4
SW
22
0.4
SW
21
0.6
SW
20
0.7
SW
20
0.2
W
12
0.6
SW
15
0.6
SW
15
0.5
SSW
19
0.3
WNW
11
0.1
S
9
Energy kJ
22
22
21
20
44
17
7
15
9
7
15
163
162
309
388
11
174
171
210
23
2
Wind waves
Height (m)
Direction
Period (s)
0.5
W
6
0.5
W
5
0.4
WNW
3
0.6
W
5
Energy kJ
16
14
4
20
Nearest Offshore or Glassy
Rating
(10 max)
2
1
2
2
1
2
2
2
2
2
2
3
3
3
3
2
2
2
2
2
3
Distance (km)
14
15
14
348
15
14
15
14
7
14
14
14
14
14
14
15
15
15
15
15
0
Best forecast wave conditions in San Diego County
Rating
(10 max)
2
1
2
1
2
2
2
2
2
2
3
3
3
3
2
2
3
2
2
3
Best forecast wave conditions in United States
Rating
(10 max)
2
2
2
2
2
3
2
3
3
2
2
3
3
3
4
3
2
4
3
2
4
Header Global
Rating
(10 max)
5
9
5
9
5
7
5
5
9
7
7
6
9
8
6
6
7
9
7
7
9
  • 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 Diamond Street Surf forecast

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

Diamond Street is 9 km (6 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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