Surf Forecasts:
15th Street surf forecast from 9 Sep 2026:
- Best quality surf: Friday 11 Sep, 5AM (local time) - 3.5ft (1.0m), 16s period, SW swell with cross-offshore winds.
- Most powerful swell: Thursday 10 Sep, 8AM (local time) - 3.5ft (1.0m), 17s period, SW swell with 553 kJ wave energy.
- Next surfable swell (1★+): Wednesday 9 Sep, 8AM (local time) - 2ft (0.6m), 13s period with SSW swell.
Best Forecast Surf Conditions for 15th Street this week:
The surf forecast for 15th Street over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Sep 09) at 8AM. The primary swell is predicted to be 0.6m and 13s period with a secondary swell of 0.7m and 9s. Another secondary swell of 0.6m and 4s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at 15th Street in the next 16 days are 1.0m 17s and forecast to arrive on Thursday (Sep 10) at 8AM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Wed 9th Sep) | 2ft (0.6m) 13s |
| Best Surf | 5AM (Fri 11th Sep) | 3.5ft (1.0m) 16s |
| Most Powerful | 8AM (Thu 10th Sep) | 3.5ft (1.0m) 17s |
Table - best surf conditions forecast for 15th Street over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's talk about what's shaping up for our local patch. We've got a long stretch of mostly small, wind-affected surf, and it's going to take a while before we see any real quality. The standout window looks like it will be in the second week, on the 23rd of September, but for most of this outlook, it's a waiting game.
We are starting off with nothing much to get excited about. For the first several days, from the 9th up through the 22nd, it's all marginal to poor conditions. The main issue is the wind. Almost every session is plagued by onshore or cross-onshore winds, which is keeping the surface messy and choppy. The swell is mostly weak, with combined wave energy often in the 300s to 400s, which is just not enough grunt to overcome that breeze. The water temps are right about average for this time of year.
Now, the one true standout, and the best on offer, is Wednesday, the 23rd of September. In the afternoon, things finally align. The wind is going to swing around to a light easterly offshore breeze at only 3 mph, which is perfect. The swell is coming from the southwest at 3 ft with a period of 15 seconds. This long-period groundswell will produce nice, clean lines with good shape. The break to keep an eye on is 15th Street. It's a consistent beginner-friendly spot, but with such clean, glassy conditions and that long-period swell, it should offer some really fun, rideable waves. The combined energy will be around 371 (moderate), so there's enough push but it won't be too intimidating. Keep in mind that this spot can be often busy.
Before that day, on the 19th of September, Saturday morning has a glimmer of hope with a combined energy of 502 (moderate) and a light offshore breeze, but the forecast is for marginal conditions with questionable tide, so it's not a solid bet. The following days after the 23rd, on the 24th, we go right back to poor conditions again.
So, the summary is clear: for the next couple of weeks, it's mostly frustration. The water is flat and bumpy. But hold out for Wednesday afternoon the 23rd. That's the day to have your board ready for some quality, clean waves at 15th Street.
Rusty
Short Range ForecastLight rain (total 5mm), mostly falling on Tue night. Warm (max 28°C on Tue night, min 22°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 22°C on Fri night, min 20°C on Sat night). Wind will be generally light. | ||||||||||||||||||
Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | ||||||||||||||
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 16 | SW 16 | SW 16 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | W 8 | W 8 | W 8 | SW 18 | SW 18 | SW 17 |
Wave Graph  | |||||||||||||||||||
 kJ | 167 | 214 | 326 | 419 | 547 | 496 | 483 | 471 | 360 | 309 | 248 | 208 | 158 | 177 | 146 | 138 | 157 | 192 | 188 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | cross | cross-on | cross-on | cross | cross | cross | cross | cross-on | cross-on | cross | cross | cross-on | cross-on | cross-on | cross-on | glassy |
High Tide | 9:04AM1.87m | 8:37PM2.28m | 9:32AM1.98m | 9:20PM2.20m | 10:00AM2.05m | 10:03PM2.06m | 10:28AM2.09m | 10:45PM1.88m | 10:55AM2.09m | 11:29PM1.68m | 11:23AM2.06m | 00:17AM1.49m | |||||||
Low Tide | 2:42AM0.11m | 2:33PM0.74m | 3:15AM0.17m | 3:17PM0.61m | 3:45AM0.28m | 4:00PM0.53m | 4:13AM0.43m | 4:42PM0.49m | 4:39AM0.61m | 5:26PM0.51m | 5:03AM0.79m | 6:13PM0.56m | |||||||
 |  | | | | |  | | |  | | | | | | | | | | |
 | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — | 6:31 | — | — |
 | — | — | 7:02 | — | — | 7:01 | — | — | 7:00 | — | — | 6:59 | — | — | 6:58 | — | — | 6:57 | — |
mm | 4 | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 27 | 26 | 25 | 26 | 26 | 24 | 24 | 24 | 22 | 22 | 22 | 21 | 22 | 22 | 21 | 21 | 21 | 20 |
Feels °C | 31 | 29 | 27 | 26 | 26 | 26 | 25 | 23 | 23 | 22 | 21 | 21 | 23 | 21 | 21 | 22 | 20 | 20 | 21 |
Swell 1 Height (m) Direction Period (s) | SSW 9 | SW 16 | SW 16 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | W 7 | W 7 | W 7 | W 8 | W 8 | W 8 | W 8 | W 8 | W 7 |
| kJ | 139 | 214 | 326 | 419 | 547 | 496 | 483 | 471 | 360 | 309 | 70 | 77 | 60 | 177 | 146 | 138 | 157 | 117 | 71 |
Swell 2 Height (m) Direction Period (s) | SSW 13 | SSW 9 | SSW 12 | W 5 | W 6 | W 6 | W 6 | W 7 | W 7 | W 6 | SW 14 | SW 14 | SW 14 | SSW 13 | SW 13 | SW 13 | SW 18 | SW 18 | SW 17 |
| kJ | 135 | 67 | 85 | 27 | 24 | 27 | 48 | 74 | 71 | 48 | 248 | 208 | 158 | 120 | 87 | 85 | 150 | 192 | 188 |
Swell 3 Height (m) Direction Period (s) | SW 16 | SSW 13 | SSW 8 | SSW 12 | S 12 | SSW 12 | SSW 11 | SSW 10 | S 10 | S 9 | WSW 14 | S 9 | S 9 | S 8 | SW 19 | SW 19 | SW 13 | SSW 12 | SW 12 |
| kJ | 167 | 133 | 45 | 82 | 72 | 45 | 39 | 21 | 17 | 15 | 70 | 14 | 13 | 12 | 130 | 127 | 84 | 61 | 38 |
Wind waves Height (m) Direction Period (s) | WNW 5 | WNW 4 | WNW 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 24 | 11 | 15 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 36 | 37 | 37 | 14 | 14 | 84 | 14 | 119 | 84 | 14 | 16 | 37 | 14 | 119 | 209 | 5 | 119 | 37 | 0 |
Best forecast wave conditions in San Diego County | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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Information about the 15th Street Surf forecast
The above surf forecast table for 15th Street provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at 15th Street can be found by selecting the local surf guide option on the grey menu. Our 15th 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 (15th 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 15th 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.
15th Street is 5 km (3 miles) from the city of Encinitas. If you plan a vacation in San Diego County, look for hotels and other accommodation in Encinitas. Encinitas has rooms for a wide range of budgets as well as car hire and transport links.
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