Surf Forecasts:
13th Street surf forecast from 29 Aug 2026:
- Best quality surf: Wednesday 2 Sep, 8AM (local time) - 3.5ft (1.1m), 12s period, SSW swell with glassy winds.
- Most powerful swell: Saturday 29 Aug, 2PM (local time) - 3.5ft (1.0m), 16s period, SSW swell with 499 kJ wave energy.
- Next surfable swell (1★+): Tuesday 1 Sep, 5AM (local time) - 1.5ft (0.5m), 13s 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 Tuesday (Sep 01) at 5AM. The primary swell is predicted to be 0.5m and 13s period with a secondary swell of 0.6m and 5s. 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 1.0m 16s and forecast to arrive on Saturday (Aug 29) at 2PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 12s period and expected on Monday (Aug 31) at 8PM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Tue 1st Sep) | 1.5ft (0.5m) 13s |
| Best Surf | 8AM (Wed 2nd Sep) | 3.5ft (1.1m) 12s |
| Most Powerful | 2PM (Sat 29th Aug) | 3.5ft (1.0m) 16s |
Table - best surf conditions forecast for 13th Street over the next 16 days.
The Lowdown
Alright, let’s break it down. Over the next sixteen days, it’s mostly a slog, with only a couple of windows worth a look.
We start off on Saturday, 29th August, with the only real solid option in the whole run. 13th Street will have some waist-to-chest high swell out of the SSW, about 3ft, with a long 17-second period. That’s proper groundswell energy, and with a light offshore breeze from the SW, it’ll be glassy. The combined swell energy is moderate at 491. The water is way warmer than usual for this time of year, sitting at 74°, which is about 7° above average – pretty damn warm. This is an advanced break that doesn’t break all the time, so don’t expect heavy crowds, but keep in mind it’s inconsistent.
Sunday the 30th drops off fast. The swell hangs around 3ft, but the wind goes cross-onshore, chopping things up. Combined energy is 508, but the quality is junk. From Monday through to Thursday, 3rd September, it’s a mix of poor and marginal calls, with the swell shrinking to around 2ft or less, and winds mostly onshore or cross-onshore. Energy drops as low as 83. Not worth paddling out.
Thursday morning, 3rd September, sees a little bump. The swell comes back to 3ft from the SSW, 13-second period, and light offshore winds. Combined energy is 374, but it’s still marginal. Maybe, but not special.
From Friday, 4th September, right through to Tuesday, 8th September, it’s a long stretch of poor surf. The swell stays under 3ft, with winds mostly cross or cross-onshore. Energy runs from 649 down to zero. That’s a solid 4-day gap of nothing worth mentioning.
Wednesday, 9th September, tosses in a weird one. The swell bumps to 4ft from the west, but the period is only 6 seconds – short-period windswell. Combined energy is 242. With light offshore in the morning, it might be rideable, but the waves will be weak and crumbly. Not for anyone who wants a quality wave.
The final days, 10th to 13th September, stay the same. Small swell, mostly under 3ft, with light offshore and cross-onshore winds. Energy stays low to moderate (97 to 285). Thursday morning, 10th September, is probably the least bad: 2ft SSW swell, 17-second period, light offshore, combined energy of 285. Still, it’s a weak option.
No real standouts except that first Saturday morning. Best bet is to get out on the 29th, then expect a long, quiet spell.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Sat morning, min 20°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Wed afternoon, min 21°C on Tue morning). Wind will be generally light. | ||||||||||||||||||||
Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | |||||||||||||||
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) | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SW 18 | SW 18 | SW 16 | SW 16 | SSW 12 | SSW 13 | SSW 15 | SSW 18 | SSW 17 | SSW 16 | SSW 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 453 | 493 | 469 | 344 | 301 | 233 | 178 | 168 | 101 | 70 | 49 | 80 | 132 | 129 | 245 | 249 | 291 | 309 | 360 | 347 | 397 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | cross-on | on | cross-on | on | on | on | on | cross-on | cross-on | on | cross-on | cross-on | on | on | cross-on | cross | on | on |
High Tide | 10:45AM1.91m | 10:36PM1.97m | 11:10AM1.98m | 11:16PM1.80m | 11:39AM2.03m | 00:03AM1.60m | 12:12PM2.05m | 1:05AM1.40m | 12:55PM2.04m | 2:49AM1.24m | 1:54PM2.02m | 6:07AM1.26m | 3:18PM2.01m | ||||||||
Low Tide | 4:36PM0.71m | 4:52AM0.50m | 5:20PM0.66m | 5:16AM0.65m | 6:09PM0.64m | 5:40AM0.80m | 7:10PM0.65m | 6:04AM0.96m | 8:30PM0.65m | 6:31AM1.11m | 10:12PM0.59m | 7:12AM1.26m | 11:41PM0.45m | ||||||||
 |  |  | | | | | | | | |  | | | | | | | | | | |
 | 6:22 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:26 | — | — | 6:26 | — | — | 6:26 | — | — |
 | — | 7:22 | — | — | 7:20 | — | — | 7:19 | — | — | 7:17 | — | — | 7:15 | — | — | 7:15 | — | — | 7:14 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 27 | 24 | 25 | 25 | 22 | 23 | 23 | 22 | 23 | 25 | 24 | 24 | 26 | 24 | 23 | 24 | 22 | 22 | 23 | 22 |
Feels °C | 29 | 27 | 24 | 25 | 24 | 22 | 23 | 21 | 21 | 22 | 22 | 22 | 22 | 23 | 21 | 22 | 22 | 21 | 21 | 22 | 22 |
Swell 1 Height (m) Direction Period (s) | SSW 17 | SSW 16 | W 8 | W 8 | SSW 14 | W 7 | SSE 13 | SSE 12 | S 11 | S 11 | S 11 | S 11 | S 12 | S 12 | SSW 12 | SSW 13 | SSW 12 | SSW 12 | SSW 12 | SSW 16 | SSW 16 |
| kJ | 453 | 493 | 187 | 164 | 301 | 114 | 225 | 240 | 198 | 191 | 237 | 257 | 314 | 294 | 245 | 249 | 250 | 309 | 241 | 347 | 397 |
Swell 2 Height (m) Direction Period (s) | W 6 | S 8 | SSW 16 | SSW 15 | S 12 | SSW 14 | W 6 | SSW 14 | W 5 | W 5 | SW 18 | W 5 | SW 16 | SW 16 | S 11 | W 6 | SSW 15 | W 6 | SSW 17 | SSW 12 | SSW 11 |
| kJ | 38 | 11 | 469 | 344 | 77 | 233 | 47 | 168 | 20 | 13 | 49 | 24 | 132 | 129 | 112 | 35 | 291 | 41 | 360 | 184 | 79 |
Swell 3 Height (m) Direction Period (s) | S 8 | W 9 | S 8 | SSE 13 | SW 21 | S 12 | SSW 14 | SW 19 | SSW 13 | SSW 13 | W 10 | SW 18 | W 5 | W 10 | W 10 | SSW 11 | S 13 | SSW 18 | W 6 | S 12 | S 12 |
| kJ | 21 | 15 | 5 | 59 | 17 | 141 | 178 | 14 | 101 | 70 | 2 | 80 | 7 | 2 | 2 | 90 | 14 | 286 | 48 | 25 | 11 |
Wind waves Height (m) Direction Period (s) | — | W 6 | W 8 | — | W 7 | — | — | W 6 | — | — | W 5 | WNW 5 | — | W 3 | W 5 | — | W 6 | WNW 6 | — | W 6 | W 7 |
| kJ | — | 37 | 265 | — | 81 | — | — | 30 | — | — | 13 | 32 | — | 5 | 26 | — | 31 | 54 | — | 25 | 233 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 93 | 71 | 30 | 30 | 93 | 30 | 31 | 104 | 23 | 31 | 71 | 23 | 141 | 141 | 19 | 141 | 71 | 30 | 30 | 1420 | 56 |
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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