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Diamond Street Surf Forecast
/ CAL – San Diego County (71 breaks) / California (404 breaks) /
Surf Forecasts:
Diamond Street surfForecast / CAL – San Diego County / USA
16 Day Weather and Surf, issued 4 am Monday 18 May 2026 PDTForecast 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
18.7° C
(Which is 2.2°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 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (May 18) at 11PM. The primary swell is predicted to be 0.9m and 12s period with a secondary swell of 0.4m and 15s. 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 1.3m 12s and forecast to arrive on Monday (May 18) at 2PM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Mon 18th May) | 3ft (0.9m) 12s |
| Best Surf | 11PM (Mon 18th May) | 3ft (0.9m) 12s |
| Most Powerful | 2PM (Mon 18th May) | 4.5ft (1.3m) 12s |
Table - best surf conditions forecast for Diamond Street over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Very mild (max 18°C on Tue morning, min 16°C on Mon morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 18°C on Thu morning, min 15°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Monday 18 | Tuesday 19 | Wednesday 20 | Thursday 21 | Friday 22 | Saturday 23 | Sunday 24 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
W 12 | W 12 | W 12 | W 11 | W 11 | W 11 | SW 16 | SW 15 | SW 15 | SW 15 | SW 15 | SW 14 | SW 18 | SW 18 | SW 15 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 15 | |
538 | 330 | 214 | 116 | 114 | 83 | 122 | 113 | 137 | 106 | 174 | 99 | 194 | 109 | 186 | 245 | 245 | 245 | 209 | 206 | 255 | |
Wind (km/h) | |||||||||||||||||||||
on | cross-on | cross-off | cross-on | cross-on | glassy | on | on | cross-on | on | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | |
High Tide | 11:53AM1.13m | 10:44PM2.05m | 12:57PM1.09m | 11:36PM1.92m | 2:08PM1.09m | 00:36AM1.74m | 3:22PM1.14m | 1:47AM1.54m | 4:28PM1.24m | 3:09AM1.37m | 5:20PM1.37m | 4:35AM1.24m | 6:01PM1.49m | ||||||||
Low Tide | 4:41PM0.62m | 6:31AM-0.45m | 5:34PM0.71m | 7:29AM-0.34m | 6:42PM0.78m | 8:32AM-0.22m | 8:10PM0.82m | 9:35AM-0.09m | 9:53PM0.77m | 10:35AM0.02m | 11:27PM0.62m | 11:28AM0.13m | 00:39AM0.43m | ||||||||
 | |  | | | | | | | | | | | | | | | | | | | |
 | 5:48 | — | — | 5:47 | — | — | 5:47 | — | — | 5:46 | — | — | 5:46 | — | — | 5:45 | — | — | 5:45 | — | — |
 | — | 7:43 | — | — | 7:43 | — | — | 7:44 | — | — | 7:45 | — | — | 7:45 | — | — | 7:45 | — | — | 7:46 | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 17 | 17 | 16 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 17 | 17 | 17 | 16 | 17 | 17 | 16 | 17 | 17 | 17 |
15 | 14 | 15 | 16 | 16 | 17 | 16 | 16 | 17 | 17 | 16 | 16 | 15 | 15 | 14 | 15 | 14 | 15 | 15 | 14 | 15 | |
Swell 1 Height (m) Direction Period (s) | W 12 | W 12 | W 12 | W 11 | W 11 | W 11 | W 10 | SW 15 | W 13 | SW 15 | SW 15 | W 12 | SW 18 | SW 14 | SW 15 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 15 |
 kJ | 538 | 330 | 214 | 116 | 114 | 83 | 52 | 113 | 123 | 106 | 174 | 67 | 194 | 99 | 186 | 245 | 245 | 245 | 209 | 206 | 255 |
Swell 2 Height (m) Direction Period (s) | SW 12 | SSW 15 | SW 12 | SSW 13 | SSW 13 | SSW 13 | SW 16 | WNW 10 | SW 15 | S 14 | S 13 | SW 14 | SW 14 | SSW 13 | W 5 | WNW 10 | SSW 12 | WNW 4 | SW 19 | SW 19 | W 5 |
| kJ | 37 | 72 | 37 | 69 | 69 | 69 | 122 | 34 | 137 | 106 | 92 | 99 | 93 | 53 | 12 | 34 | 27 | 6 | 58 | 93 | 16 |
Swell 3 Height (m) Direction Period (s) | SSW 16 | SW 12 | SW 17 | SW 16 | SW 16 | SW 16 | SSW 12 | SSW 12 | SW 19 | W 5 | WNW 12 | S 13 | W 11 | SW 18 | SSW 12 | SSW 12 | SW 21 | SSW 11 | S 10 | S 10 | S 9 |
| kJ | 48 | 37 | 70 | 69 | 93 | 65 | 50 | 49 | 133 | 13 | 27 | 87 | 61 | 109 | 48 | 47 | 18 | 22 | 17 | 16 | 15 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | W 5 | — | — | W 6 | — | — | WNW 10 | — | WNW 4 | W 4 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | 14 | — | — | 17 | — | — | 33 | — | 6 | 8 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 130 | 62 | 0 | 14 | 14 | 0 | 15 | 15 | 6 | 15 | 14 | 15 | 15 | 215 | 14 | 14 | 15 | 14 | 15 | 15 | 14 |
Best forecast wave conditions in San Diego County | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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.
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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