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Surf Forecasts:

Diamond Street surfForecast / CAL – San Diego County / USA

information circle12 Day Weather and Surf, issued 10 pm Friday 12 Sep 2025 PDT
Forecast update in hr  min  s Forecast update imminent
Diamond Street surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Diamond Street sea temperature is
20.9° C
 (Which is slightly warmer than usual)

Best Forecast Surf Conditions for Diamond Street this week:

The surf forecast for Diamond Street over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Sep 13) at 5AM. The primary swell is predicted to be 0.5m and 16s period with a secondary swell of 0.6m and 6s. Another secondary swell of 0.6m and 13s is also forecast. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Diamond Street in the next 12 days are 0.9m 16s and forecast to arrive on Wednesday (Sep 17) at 2AM. 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+) 5AM (Sat 13th Sep)1.5ft (0.5m) 16s
Best Surf 2AM (Tue 16th Sep)2.5ft (0.8m) 18s
Most Powerful 2AM (Wed 17th Sep)3ft (0.9m) 16s

Table - best surf conditions forecast for Diamond Street over the next 12 days.

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Mostly dry. Warm (max 21°C on Mon morning, min 18°C on Sat night). Wind will be generally light.

Days 3-6 Weather Summary Some drizzle, heaviest during Tue night. Warm (max 24°C on Wed morning, min 20°C on Mon night). Wind will be generally light.

Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Fri
19
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
2
0
0
2
1
0
2
1
1
3
1
0
2
0
0
0
0
0
1
0
1
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.7
SW
0.5
SW
0.7
SW
0.7
SW
0.6
SW
0.6
SW
0.4
SSW
0.5
SSW
0.5
SSW
0.8
SSW
0.8
SSW
0.8
SSW
0.9
SSW
0.9
SSW
0.9
SSW
0.8
SSW
0.8
SSW
0.8
SSW
0.6
SSW
0.6
SSW
0.7
SW
Period(s) (?)161613141414212019181716161515151414141313
Wave
Graph
(?)Metric surfscale
Energy kJ (?)245125176195164149153218214404386339447353344242264261145141180
Wind
(km/h)
5
NW
10
WSW
10
W
5
W
10
WSW
10
WSW
5
SSW
10
WSW
10
WSW
5
WNW
10
W
10
WNW
5
NNW
15
NW
10
WNW
10
NW
15
WNW
15
WNW
5
NW
10
WNW
10
NW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
glassoncross-
on		glassononglassononglasscross-
on		cross-
on		crosscross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on
High Tide
/ height (m)
2:41AM
0.97
1:41PM
1.72
5:48AM
0.99
3:09PM
1.65
7:04AM
1.13
4:47PM
1.65
7:37AM
1.26
6:04PM
1.73
8:04AM
1.37
7:03PM
1.80
8:30AM
1.47
7:49PM
1.84
8:54AM
1.55
Low Tide
/ height (m)
8:28PM
0.17
6:55AM
0.80
10:08PM
0.17
8:16AM
0.97
11:45PM
0.09
10:52AM
1.00
12:53AM
-0.02
12:26PM
0.87
1:42AM
-0.10
1:24PM
0.70
2:20AM
-0.13
2:09PM
0.54
2:52AM
-0.11
2:48PM
0.40
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Fri
19
Sunrise-6:31--6:31--6:31--6:33--6:33--6:33--6:35-
Sunset--6:58--6:57--6:54--6:53--6:52--6:51--6:50
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
rain showers
clear
clear
part cloud
part cloud
clear
clear
part cloud
cloud
Rain (mm)
------------1--------
Temp. °C202019192020192121212322222423232323222422
Feels °C (?)211918192120202221222321232322222223222422
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

Eyeball surf reportRecent Eyeball Surf Reports for CAL - San Diego County

  1. weather stationWind Update Continuing clean conditions at Diamond Street (calm at La Jolla- CA 8 km from Diamond Street). 0.6m 10s swell from the WSW with a 0.4m 10s swell from the SW and a 0.2m 17s long period groundswell from the SSW. 3 swells combining to make bigger set waves.

    1 hour 56 minutes ago Diamond Street
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1 h 56 min ago

4 km/h
SE
Clean
Please reload the page to see if there are any updates.

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Diamond Street surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.

View detailed surf forecast for Diamond Street at:
surf-forecast.com

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 12 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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