Surf Forecasts:
13th Street surf forecast from 20 Aug 2026:
- Best quality surf: Sunday 23 Aug, 5AM (local time) - 2ft (0.6m), 16s period, SSW swell with glassy winds.
- Most powerful swell: Sunday 23 Aug, 5AM (local time) - 2ft (0.6m), 16s period, SSW swell with 191 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 5AM (local time) - 1.5ft (0.5m), 14s period with SSW swell.
Best Forecast Surf Conditions for 13th Street this week:
The surf forecast for 13th Street over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 20) at 5AM. The primary swell is predicted to be 0.5m and 14s period with a secondary swell of 0.8m and 6s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at 13th Street in the next 16 days are 0.6m 16s and forecast to arrive on Sunday (Aug 23) at 5AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 11s period and expected on Thursday (Aug 27) at 5AM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Thu 20th Aug) | 1.5ft (0.5m) 14s |
| Best Surf | 5AM (Sun 23rd Aug) | 2ft (0.6m) 16s |
| Most Powerful | 5AM (Sun 23rd Aug) | 2ft (0.6m) 16s |
Table - best surf conditions forecast for 13th Street over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's be real with you about the next couple of weeks. This stretch is looking pretty bleak, so I'll keep it short.
We've got nothing for the first big chunk of the forecast. From now all the way through Thursday the 28th of August, 13th Street is effectively flat or blown out. A whole week of poor conditions and tiny swell. You'd be better off cleaning the wax off your board than paddling out.
Things start to show a flicker of life from the 29th. Friday the 29th of August morning, we see a bit of a lift with a 3ft swell from the SSW, running on a 17-second period. The energy is moderate at best (473), and there's a light breeze on it. But it's a long-period groundswell, better suited to a point or reef than a beach break like this. It'll be inconsistent and for the advanced crew only. The water temp hovers around average for August, nothing weird going on.
The only date you might want to circle is Friday the 4th of September morning. The swell rolls in at 2ft from the SSW, with a very long period of 19 seconds (244 energy). The wind is absolutely glassy – light airs, clean as a whistle. That's the kind of condition that makes small waves feel fun. It's still tiny, but for a mellow, glassy session on a longboard, that's your window. The rest is just messy with onshore wind.
Honestly, it's a pretty blank run for 13th Street. It doesn't stay this poor for long around here, so keep an eye on the charts, but for now, this is a waiting game.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Sat afternoon, min 20°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Sun afternoon, min 21°C on Mon night). Wind will be generally light. | ||||||||||||||||||
Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | ||||||||||||||
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) | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 15 | SSW 15 | SSW 16 | SW 18 | SSW 14 | SW 18 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 |
Wave Graph  | |||||||||||||||||||
 kJ | 176 | 165 | 186 | 113 | 101 | 99 | 68 | 63 | 71 | 167 | 85 | 111 | 163 | 111 | 101 | 173 | 169 | 127 | 124 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | cross-on | on | on | glassy | on | cross-on | glassy | on | cross-on | cross-on | on | cross-on | on | on | cross-on | cross-on |
High Tide | 3:53PM1.82m | 8:28AM1.37m | 5:11PM1.85m | 8:33AM1.44m | 6:12PM1.93m | 8:47AM1.50m | 7:00PM2.03m | 9:04AM1.56m | 7:39PM2.12m | 9:22AM1.62m | 8:15PM2.19m | ||||||||
Low Tide | 11:04PM0.75m | 00:23AM0.65m | 10:13AM1.36m | 1:14AM0.53m | 12:00PM1.33m | 1:52AM0.43m | 12:55PM1.25m | 2:23AM0.34m | 1:35PM1.16m | 2:51AM0.27m | 2:10PM1.06m | 3:17AM0.24m | |||||||
 |  |  | | | | | | | | | | | | | | | | | |
 | — | 6:16 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:20 | — | — | 6:20 | — | — |
 | — | — | 7:32 | — | — | 7:31 | — | — | 7:30 | — | — | 7:29 | — | — | 7:28 | — | — | 7:27 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 23 | 24 | 22 | 24 | 25 | 23 | 26 | 27 | 24 | 26 | 27 | 24 | 25 | 26 | 24 | 25 | 27 | 25 |
Feels °C | 23 | 24 | 24 | 23 | 25 | 25 | 24 | 26 | 26 | 24 | 26 | 26 | 24 | 25 | 25 | 23 | 25 | 25 | 24 |
Swell 1 Height (m) Direction Period (s) | W 6 | W 6 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | W 6 | W 6 | SSW 15 | W 6 | W 6 | SSW 13 | W 6 | W 6 | SW 17 | SW 17 | SW 16 | SW 16 | W 6 |
| kJ | 44 | 36 | 186 | 113 | 101 | 99 | 16 | 27 | 71 | 37 | 38 | 98 | 44 | 47 | 101 | 173 | 169 | 127 | 76 |
Swell 2 Height (m) Direction Period (s) | SSW 15 | SSW 14 | W 6 | W 6 | W 6 | W 6 | SSW 13 | SSW 13 | SW 12 | SSW 15 | SSW 13 | SW 18 | SSW 14 | SW 18 | SSW 12 | S 13 | S 13 | S 13 | S 13 |
| kJ | 176 | 165 | 16 | 16 | 18 | 10 | 68 | 63 | 37 | 167 | 67 | 111 | 163 | 111 | 50 | 90 | 89 | 87 | 85 |
Swell 3 Height (m) Direction Period (s) | SW 18 | SW 19 | WNW 12 | S 10 | SW 18 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSW 16 | S 16 | SW 18 | SSW 15 | SSW 15 | SSE 9 | SSE 11 | SSE 10 | SW 16 |
| kJ | 12 | 57 | 15 | 8 | 50 | 18 | 19 | 19 | 19 | 19 | 85 | 44 | 112 | 71 | 71 | 17 | 22 | 22 | 124 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | W 6 | — | — | W 6 | — | — | W 6 | W 6 | W 6 | W 6 | — |
| kJ | — | — | — | — | — | — | — | — | 25 | — | — | 22 | — | — | 56 | 95 | 62 | 86 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 18 | 30 | 85 | 30 | 30 | 71 | 0 | 93 | 104 | 0 | 104 | 141 | 17 | 93 | 141 | 30 | 93 | 141 | 24 |
Best forecast wave conditions in Orange County | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
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Information about the 13th Street Surf forecast
The above surf forecast table for 13th Street provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at 13th Street can be found by selecting the local surf guide option on the grey menu. Our 13th 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 (13th 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 13th 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.
13th Street is 3 km (2 miles) from the city of Seal Beach. If you plan a vacation in Orange County, look for hotels and other accommodation in Seal Beach. Seal Beach has rooms for a wide range of budgets as well as car hire and transport links.
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