Diamond Street surfForecast / CAL – San Diego County / USA

information circle12 Day Weather and Surf, issued 3 pm Friday 26 Dec 2025 PST
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
16.9° C
(Which is 1.7°C warmer than normal for this time of year)


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 (Dec 27) at 7PM. The primary swell is predicted to be 1.2m and 12s period with a secondary swell of 0.2m and 15s. 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 1.8m 13s and forecast to arrive on Saturday (Dec 27) at 7AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 3s period and expected on Tuesday (Dec 30) at 7PM.

Wave TypeTime (PST) & Date Wave Height & Period
Next good surf (1 star+) 7PM (Sat 27th Dec)4ft (1.2m) 12s
Best Surf 7PM (Sat 27th Dec)4ft (1.2m) 12s
Most Powerful 7AM (Sat 27th Dec)6ft (1.8m) 13s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Light rain (total 7mm), mostly falling on Fri afternoon. Warm (max 20°C on Mon morning, min 13°C on Sat night). Wind will be generally light.

Days 3-6 Weather Summary Moderate rain (total 11mm), heaviest on Thu morning. Warm (max 24°C on Tue afternoon, min 14°C on Wed night). Wind will be generally light.

Fri
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
01
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
1
1
1
2
2
2
0
1
1
0
0
0
0
0
1
0
1
1
1
1
1
Swell
Height Map
Wave Height (m) & direction (?)
1.8
W
1.7
W
1.6
W
1.3
W
1.2
W
1
W
0.8
W
0.6
W
0.5
W
0.2
WSW
0.3
WNW
0.2
W
0.1
SW
0.2
W
0.3
WNW
0.3
WNW
0.4
WNW
0.5
W
0.6
W
0.6
W
0.6
W
Period(s) (?)131113128109981377141413131213131212
Wave
Graph
(?)Metric surfscale
Energy kJ (?)107072487850419117910656331710581635344984119106101
Wind
(km/h)
20
SSW
20
NW
10
WNW
10
WNW
10
NNE
10
N
15
NW
10
ENE
5
NE
15
NNW
10
ENE
10
NE
5
N
10
NE
5
ENE
10
SW
5
N
5
NE
10
E
5
NNE
0
SE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
cross-
on
cross-
on
cross-
on
cross-
off
cross-
off
crossoffglasscross-
off
offoffcross-
off
offoffcross-
on
cross-
off
glassoffglassglass
High Tide
/ height (m)
2:39AM
1.38
2:06PM
1.05
3:26AM
1.53
3:54PM
0.94
4:14AM
1.69
5:33PM
0.94
5:02AM
1.85
6:49PM
1.01
5:51AM
2.00
7:51PM
1.10
6:40AM
2.10
8:39PM
1.17
7:29AM
2.18
Low Tide
/ height (m)
7:55PM
0.19
9:12AM
0.66
8:42PM
0.32
10:40AM
0.43
9:37PM
0.45
11:50AM
0.16
10:36PM
0.55
12:46PM
-0.11
11:35PM
0.61
1:36PM
-0.34
12:34AM
0.64
2:23PM
-0.50
1:28AM
0.62
Fri
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
01
Sunrise--6:48--6:50--6:50--6:50--6:50--6:50--6:50
Sunset4:49--4:50--4:50--4:51--4:52--4:52--4:52--
rain showers
rain showers
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
cloud
cloud
light rain
mod rain
light rain
rain showers
part cloud
Rain (mm)
43--------------5616-
Temp. °C171515151417171720211722242021191715181819
Feels °C (?)141112131313121415161318201517161614181919
  • 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 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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