Using Surf-Forecast’s Historical Surf Data To Find The Most Consistent Waves On Earth
Using our statistical data for 7000 spots dating back to 2006, we can find those waves that break the most, with the best winds.
Surf Forecasts:
Diamond Street surfForecast / CAL – San Diego County / USA
48hr Weather and Surf, issued 3 am Thursday 18 Dec 2025 PSTForecast 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 1.4°C warmer than normal for this time of year)How big are the waves at Diamond Street today?
The current surf forecast for Diamond Street at 6AM is: 1.3m 12s primary swell from a West direction and 0.4m 13s secondary swell from a Southwest direction (forecast issued at 03:00am December 18). The wind direction is predicted to be cross-shore.
| Time (PST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Dec) | 3.5ft (1.1m) | 9s |
| Afternoon (18 Dec) | 4ft (1.2m) | 9s |
| Evening (18 Dec) | 4ft (1.2m) | 9s |
Table - waves today at Diamond Street. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thursday 18 | Friday 19 | Saturday 20 | ||||||||||||||||||||||
| 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    | |||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 12 | 12 | 12 | 9 | 9 | 9 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 7 | 7 | 7 | 7 | 7 | 7 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 488 | 480 | 456 | 181 | 185 | 252 | 241 | 210 | 194 | 194 | 153 | 125 | 125 | 189 | 190 | 143 | 130 | 81 | 94 | 77 | 61 | 61 | 35 | 96 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross | cross- off | cross | cross- on | cross- on | glass | glass | glass | glass | glass | glass | on | on | glass | cross- on | glass | cross | glass | cross- on | cross- on | cross- on | cross | glass |
High Tide / height (m) | 7:19AM 1.83 | 9:13PM 1.09 | 7:51AM 1.86 | 9:46PM 1.09 | 8:23AM 1.86 | |||||||||||||||||||
Low Tide / height (m) | 1:18AM 0.72 | 2:59PM -0.18 | 1:50AM 0.73 | 3:32PM -0.21 | 2:23AM 0.73 | 4:05PM -0.22 | ||||||||||||||||||
Thursday 18 | Friday 19 | Saturday 20 | ||||||||||||||||||||||
| Sunrise | - | - | 6:45 | - | - | - | - | - | - | - | 6:46 | - | - | - | - | - | - | - | 6:46 | - | - | - | - | - |
| Sunset | - | - | - | - | - | 4:45 | - | - | - | - | - | - | - | 4:45 | - | - | - | - | - | - | - | 4:45 | - | - |
 | |  | | | | | | | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 14 | 15 | 16 | 18 | 19 | 19 | 18 | 18 | 19 | 18 | 18 | 19 | 19 | 18 | 17 | 16 | 15 | 15 | 15 | 16 | 17 | 17 | 16 | 16 |
| Feels °C (?) | 13 | 14 | 15 | 17 | 17 | 18 | 18 | 18 | 19 | 18 | 17 | 18 | 17 | 17 | 17 | 16 | 15 | 15 | 15 | 15 | 16 | 17 | 16 | 16 |
- 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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