Surf Forecasts:
13th Street surf forecast from 7 Sep 2026:
- Best quality surf: Wednesday 9 Sep, 5AM (local time) - 1.5ft (0.4m), 16s period, SW swell with glassy winds.
- Most powerful swell: Monday 7 Sep, 11PM (local time) - 5ft (1.5m), 12s period, SSW swell with 579 kJ wave energy.
- Next surfable swell (1★+): Wednesday 9 Sep, 5AM (local time) - 1.5ft (0.4m), 16s period with SW 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 Wednesday (Sep 09) at 5AM. The primary swell is predicted to be 0.4m and 16s period with a secondary swell of 0.7m and 9s. Another secondary swell of 0.4m and 13s is also forecast. Another secondary swell of 0.6m and 5s is also forecast. 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 1.5m 12s and forecast to arrive on Monday (Sep 07) at 11PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 12s period and expected on Monday (Sep 07) at 5PM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Wed 9th Sep) | 1.5ft (0.4m) 16s |
| Best Surf | 5AM (Wed 9th Sep) | 1.5ft (0.4m) 16s |
| Most Powerful | 11PM (Mon 7th Sep) | 5ft (1.5m) 12s |
Table - best surf conditions forecast for 13th Street over the next 16 days.
The Lowdown
Alright, let's get real about 13th Street. The next 16 days are looking flat-out poor. The water's a warm 72°F, which is way warmer than usual for this time of year, but that's the only good news.
We kick off Monday, 7th September, with a tiny 1.0ft SW swell and a 19-second period. That's a super long period groundswell, which can mean beautiful lines, but at this size, it's barely a ripple. The combined energy is a measly 70, so it's weak. The wind is a light cross-shore, but the surf is just poor. We're looking at days of this. The swell bumps up a touch on Tuesday morning, 8th September, to 3ft from the SSW, with a period of 10 seconds. The energy jumps to 400 (moderate), and the wind is light. But the forecast still calls it "marginal" at best. It's just not coming together.
The pattern is the same for the entire week and into the next. We see a persistent cross-on or onshore breeze, mostly from the W or WSW, with a few shifts to the S. The height stays stubbornly between 1ft and 3ft, and the periods are either very long (15-19 seconds) or short (7-8 seconds). The energy readings are moderate, often in the 200-400 range, but the wind and wave quality reports are consistently "poor" or "marginal." There's a stretch from Wednesday, 9th September right through to Tuesday, 15th September where it's just one poor surf report after another. It's a blank run, for sure. We get a few "marginal" tags on the mornings of 16th, 17th, and 18th September, with light onshore winds and 2ft swell, but it's still not a recommendation.
This spot is marked as "inconsistent," and this forecast proves it. For an advanced break, the swell is too small and the wind is never truly clean. Honestly, with the persistent cross-onshore wind and small, weak swell, this setup looks more interesting for a kite session than a paddle session. We don't get a single standout, not even a hopeful one. The best you can hope for is a very early morning paddle on a day like Tuesday, 22nd September, when the swell is 3ft from the SW with a 16-second period and light onshore wind, but the forecast still calls it marginal. It's a tough stretch.
Rusty.
Short Range ForecastSome drizzle, heaviest during Mon morning. Warm (max 30°C on Tue afternoon, min 23°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 25°C on Thu morning, min 20°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | |||||||||||||||
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 19 | SSW 19 | SSW 11 | SSW 14 | SSW 10 | SSW 10 | SW 16 | SSW 17 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SSW 14 | SW 14 | W 7 | W 8 | SW 19 | W 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 58 | 35 | 383 | 184 | 136 | 98 | 127 | 184 | 232 | 342 | 306 | 295 | 245 | 174 | 171 | 140 | 100 | 106 | 72 | 69 | 142 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross | cross | cross-on | cross | cross-on | on | cross-on |
High Tide | 8:14AM1.65m | 7:04PM2.26m | 8:42AM1.77m | 7:56PM2.31m | 9:11AM1.89m | 8:42PM2.30m | 9:39AM1.99m | 9:26PM2.21m | 10:07AM2.06m | 10:09PM2.07m | 10:34AM2.11m | 10:52PM1.89m | 11:02AM2.11m | 11:36PM1.69m | |||||||
Low Tide | 12:59PM1.09m | 2:12AM0.11m | 1:52PM0.92m | 2:48AM0.10m | 2:39PM0.76m | 3:21AM0.17m | 3:23PM0.62m | 3:52AM0.28m | 4:06PM0.54m | 4:20AM0.44m | 4:49PM0.50m | 4:46AM0.62m | 5:33PM0.51m | ||||||||
 |  |  | | | |  | |  | | | | | | | | | | | | | |
 | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — | 6:31 | — | — | 6:31 | — | — | 6:33 | — | — | 6:33 | — | — |
 | — | 7:09 | — | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — | — | 7:04 | — | — | 7:02 | — | — | 7:01 | — |
mm | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 29 | 27 | 29 | 30 | 27 | 29 | 30 | 24 | 25 | 25 | 24 | 23 | 24 | 22 | 21 | 22 | 21 | 21 | 22 | 22 |
Feels °C | 29 | 29 | 25 | 29 | 28 | 25 | 29 | 28 | 24 | 25 | 25 | 25 | 23 | 24 | 22 | 19 | 21 | 22 | 21 | 22 | 23 |
Swell 1 Height (m) Direction Period (s) | S 12 | S 12 | SSW 11 | SSW 10 | SSW 10 | SSW 10 | SSW 13 | SSW 17 | SW 17 | SW 17 | SW 16 | W 6 | SW 16 | W 6 | W 6 | W 6 | W 7 | W 7 | W 8 | W 7 | W 8 |
| kJ | 812 | 683 | 383 | 184 | 136 | 96 | 98 | 184 | 232 | 342 | 306 | 53 | 245 | 38 | 67 | 49 | 43 | 106 | 72 | 69 | 142 |
Swell 2 Height (m) Direction Period (s) | SW 19 | SSW 19 | SSW 15 | SSW 14 | SSW 13 | SSW 13 | SSW 9 | S 12 | W 5 | W 5 | W 6 | SW 16 | W 6 | SW 15 | SW 15 | SSW 14 | SW 14 | SW 14 | SSW 14 | SW 13 | SW 13 |
| kJ | 58 | 35 | 121 | 161 | 102 | 98 | 42 | 77 | 17 | 14 | 15 | 295 | 39 | 174 | 171 | 140 | 100 | 97 | 71 | 45 | 44 |
Swell 3 Height (m) Direction Period (s) | SW 10 | W 9 | SW 18 | SW 18 | SW 18 | SW 16 | SW 16 | SSW 8 | S 12 | SSW 12 | SW 8 | S 11 | SSW 11 | SSE 9 | S 9 | SSE 9 | S 9 | S 8 | S 8 | SW 19 | SW 19 |
| kJ | 4 | 2 | 50 | 49 | 50 | 94 | 127 | 26 | 73 | 47 | 9 | 21 | 22 | 8 | 13 | 16 | 14 | 12 | 12 | 58 | 57 |
Wind waves Height (m) Direction Period (s) | W 4 | W 4 | W 4 | WNW 4 | W 4 | W 4 | W 4 | WNW 4 | — | — | — | — | SE 3 | — | — | SSE 2 | — | — | — | — | — |
| kJ | 8 | 9 | 7 | 6 | 10 | 14 | 14 | 24 | — | — | — | — | 5 | — | — | 1 | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 19 | 56 | 19 | 93 | 126 | 34 | 23 | 141 | 30 | 30 | 24 | 30 | 30 | 30 | 30 | 30 | 93 | 30 | 30 | 141 | 30 |
Best forecast wave conditions in Orange County | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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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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