Surf Forecasts:
Diamond Street surf forecast from 1 Aug 2026:
- Best quality surf: Saturday 1 Aug, 11PM (local time) - 2ft (0.6m), 13s period, SW swell with glassy winds.
- Most powerful swell: Saturday 8 Aug, 2AM (local time) - 2.5ft (0.7m), 18s period, SW swell with 312 kJ wave energy.
- Next surfable swell (1★+): Saturday 1 Aug, 11PM (local time) - 2ft (0.6m), 13s 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 (Aug 01) at 11PM. The primary swell is predicted to be 0.6m and 13s period with a secondary swell of 0.7m and 10s. Another secondary swell of 0.5m and 8s 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 16 days are 0.7m 18s and forecast to arrive on Saturday (Aug 08) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Sat 1st Aug) | 2ft (0.6m) 13s |
| Best Surf | 11PM (Sat 1st Aug) | 2ft (0.6m) 13s |
| Most Powerful | 2AM (Sat 8th Aug) | 2.5ft (0.7m) 18s |
Table - best surf conditions forecast for Diamond Street over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s talk about what’s heading our way at Diamond Street. It’s a bit of a quiet stretch on the whole, so we’ll take it day by day.
Right off the bat, we’ve got a run of weather that’s clear and mostly light winds, but the waves themselves are pretty weak and the forecast is calling it "poor surf conditions" for the first couple of weeks. The water is sitting at 75° with a massive anomaly of 7° – that’s much warmer than usual for this time of year, so you can leave the wetsuit at home.
The first real glimmer of something happens on Friday the 14th of August. Through the morning, we’ve got a 2ft swell from the SW with a long period of 18 seconds, and the combined energy bumps up to 531 (moderate). The wind is light and offshore from the SW, so it’ll be clean. That said, it’s still being called "marginal" – inconsistent and better for a longboard cruise than any real punch. Still, it’s the best we’ve seen so far.
Saturday the 15th of August morning sees the swell nudge up to 3ft from the SW, period 16 seconds, and the energy hits 561 (moderate). But the wind swings cross-onshore from the SW at 9 mph, which puts a bit of a bump on it. It’s still in the "marginal" zone, so don’t expect a classic. This is a beginner-friendly break, so 3ft is fine for learning, but the chop won’t help.
If you’re a kiter, the whole second half of the run has more consistent cross-onshore winds and moderate energy, so you might find more joy than a surfer will.
Honestly, for the first 13 days, it’s a flat, poor run. The only standout is Friday the 14th morning, but even that’s a "maybe" rather than a "must-go." Crowds are "sometimes" a thing here, but with this quality, you’ll likely have it to yourself.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Sun morning, min 21°C on Sat morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 22°C on Tue morning, min 20°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 16 | SW 15 | WSW 15 | SW 14 | WSW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SSW 19 | SW 19 | SW 18 |
Wave Graph  | |||||||||||||||||||||
 kJ | 261 | 183 | 142 | 111 | 108 | 130 | 100 | 102 | 72 | 113 | 86 | 167 | 134 | 97 | 155 | 108 | 108 | 112 | 248 | 173 | 312 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | glassy | on | on | on | on | on | cross-on | on | on | cross-on | on | on | cross-on | on | on | on | cross-on | on | cross-on |
High Tide | 11:57AM1.41m | 11:19PM1.63m | 12:27PM1.46m | 11:59PM1.44m | 1:01PM1.52m | 00:49AM1.22m | 1:42PM1.57m | 2:05AM0.99m | 2:35PM1.62m | 4:15AM0.85m | 3:43PM1.68m | 6:42AM0.91m | 4:59PM1.77m | ||||||||
Low Tide | 5:41PM0.55m | 6:19AM0.07m | 6:31PM0.54m | 6:45AM0.21m | 7:31PM0.53m | 7:12AM0.38m | 8:51PM0.49m | 7:43AM0.55m | 10:30PM0.39m | 8:29AM0.72m | 00:04AM0.21m | 10:07AM0.84m | 1:13AM-0.00m | ||||||||
 | |  | | | | | | | | | | | | | | | | | | | |
 | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — |
 | — | 7:46 | — | — | 7:45 | — | — | 7:45 | — | — | 7:45 | — | — | 7:44 | — | — | 7:43 | — | — | 7:42 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 22 | 21 | 23 | 23 | 22 | 23 | 23 | 22 | 22 | 22 | 21 | 22 | 22 | 21 | 22 | 22 | 21 | 21 | 22 | 21 |
Feels °C | 23 | 22 | 22 | 24 | 23 | 23 | 24 | 23 | 23 | 22 | 22 | 22 | 22 | 22 | 21 | 22 | 22 | 22 | 22 | 22 | 22 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 13 | SSW 9 | SW 13 | W 8 | W 9 | W 6 | W 6 | W 6 | W 6 | W 6 | SW 14 | WSW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 18 |
| kJ | 261 | 183 | 78 | 111 | 44 | 57 | 39 | 36 | 23 | 17 | 23 | 167 | 134 | 97 | 155 | 108 | 108 | 106 | 136 | 132 | 312 |
Swell 2 Height (m) Direction Period (s) | W 7 | W 7 | SW 13 | W 7 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 15 | WSW 15 | W 5 | W 5 | SW 11 | W 5 | WNW 5 | WNW 5 | SW 18 | SSW 19 | SW 19 | SW 12 |
| kJ | 35 | 37 | 142 | 26 | 108 | 130 | 100 | 98 | 72 | 113 | 86 | 17 | 14 | 20 | 12 | 8 | 9 | 112 | 248 | 173 | 72 |
Swell 3 Height (m) Direction Period (s) | S 9 | SW 10 | W 8 | SSW 9 | SSW 8 | SW 18 | SW 16 | WSW 16 | SW 16 | SW 12 | SW 12 | S 9 | SSW 12 | S 9 | S 9 | SW 20 | SW 20 | W 5 | W 5 | S 9 | SSW 9 |
| kJ | 40 | 51 | 33 | 30 | 26 | 79 | 68 | 102 | 66 | 53 | 50 | 6 | 15 | 6 | 6 | 60 | 64 | 5 | 4 | 6 | 16 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | W 5 | — | — | — | — | — | W 5 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 14 | — | — | — | — | — | 4 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 15 | 15 | 0 | 15 | 15 | 7 | 15 | 15 | 14 | 15 | 15 | 13 | 15 | 15 | 15 | 15 | 15 | 13 | 153 | 15 | 27 |
Best forecast wave conditions in San Diego County | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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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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