Surf Forecasts:
15th Street surf forecast from 11 Sep 2026:
- Best quality surf: Wednesday 16 Sep, 8AM (local time) - 3ft (0.9m), 17s period, SSW swell with glassy winds.
- Most powerful swell: Wednesday 16 Sep, 8AM (local time) - 3ft (0.9m), 17s period, SSW swell with 475 kJ wave energy.
- Next surfable swell (1★+): Saturday 12 Sep, 11PM (local time) - 2ft (0.6m), 14s period with SW 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 Saturday (Sep 12) at 11PM. The primary swell is predicted to be 0.6m and 14s period with a secondary swell of 0.7m and 6s. 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 0.9m 17s and forecast to arrive on Wednesday (Sep 16) at 8AM. Winds are predicted to be glassy at the time the swell arrives.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Sat 12th Sep) | 2ft (0.6m) 14s |
| Best Surf | 8AM (Wed 16th Sep) | 3ft (0.9m) 17s |
| Most Powerful | 8AM (Wed 16th Sep) | 3ft (0.9m) 17s |
Table - best surf conditions forecast for 15th Street over the next 16 days.
The Lowdown
Alright, this is Rusty. Let’s talk about the forecast for our stretch of coast.
Over the next 16 days, it’s a pretty quiet run out at 15th Street. The water’s running about 72°, which is a solid 4° warmer than usual for September – it feels like we skipped straight into a warm spell. The problem is, the swell just isn’t cooperating.
Starting Friday the 11th, the morning shows a 3ft SW groundswell at 16 seconds, with a 12 mph cross-shore wind. There’s some energy behind it (combined energy 537), but that wind is putting a chop on it, and the report calls it marginal. That’s the story for the first week – Saturday through Thursday the 18th is mostly messy, with cross-onshore winds and short-period windswell or long-period stuff getting chopped up. Not much to get excited about.
Things take a small turn from Friday the 19th. The swell sits around 3ft to 3ft from the SW, with periods stretching to 17-18 seconds. Winds drop to light breezes, mostly onshore or cross-onshore, which cleans the surface up but leaves the waves pretty small. At a beach and reef setup like this, that long period groundswell tends to break fat and straight – not ideal for the banks. The combined energy hits 652 on Sunday the 20th, so there’s push, but the height is weak.
The best chance to score something is the morning of Sunday the 20th. A 3ft SW groundswell with an 18-second period, light cross-onshore wind, and the highest energy we see all window (652). It’s still small, but if you’ve got a log and some patience, it might offer a few clean, glidey lines. Crowds are common here, so don’t expect solitude. After the 20th, it fades back into marginal and poor conditions for the rest of the run.
It’s a flat spell, plain and simple. Keep the board waxed and watch the forecasts.
- Rusty
Short Range ForecastMostly dry. Warm (max 25°C on Fri morning, min 21°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 23°C on Mon morning, min 19°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | |||||||||||||||
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 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SSW 13 | W 7 | W 10 | W 8 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 471 | 360 | 309 | 248 | 208 | 158 | 131 | 131 | 225 | 200 | 192 | 188 | 163 | 157 | 157 | 475 | 164 | 291 | 280 | 246 | 239 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross-on | on | cross-on | cross-on | cross-on | cross | cross | cross-on | cross-on | cross-on | cross-on | glassy | cross-on | on | glassy | on | on | cross |
High Tide | 10:00AM2.05m | 10:03PM2.06m | 10:28AM2.09m | 10:45PM1.88m | 10:55AM2.09m | 11:29PM1.68m | 11:23AM2.06m | 00:17AM1.49m | 11:52AM1.99m | 1:21AM1.32m | 12:26PM1.89m | 3:50AM1.22m | 1:12PM1.79m | ||||||||
Low Tide | 4:00PM0.53m | 4:13AM0.43m | 4:42PM0.49m | 4:39AM0.61m | 5:26PM0.51m | 5:03AM0.79m | 6:13PM0.56m | 5:23AM0.96m | 7:07PM0.64m | 5:35AM1.11m | 8:21PM0.72m | 5:02AM1.22m | 10:05PM0.74m | ||||||||
 | |  | | |  | | | | | | | | | | | | | | | | |
 | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — | 6:31 | — | — | 6:31 | — | — | 6:33 | — | — | 6:33 | — | — |
 | — | 7:00 | — | — | 6:59 | — | — | 6:58 | — | — | 6:57 | — | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 25 | 23 | 24 | 24 | 22 | 23 | 23 | 21 | 23 | 23 | 21 | 22 | 22 | 20 | 21 | 21 | 20 | 22 | 22 | 21 |
Feels °C | 25 | 25 | 24 | 24 | 24 | 24 | 22 | 22 | 23 | 23 | 22 | 23 | 22 | 21 | 21 | 21 | 20 | 21 | 22 | 21 | 22 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 15 | SW 15 | W 6 | W 6 | W 6 | W 7 | W 7 | W 10 | W 8 | W 8 | W 9 | W 9 | W 9 | W 8 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 14 |
| kJ | 471 | 360 | 309 | 51 | 38 | 61 | 131 | 131 | 225 | 200 | 117 | 99 | 97 | 76 | 49 | 475 | 164 | 291 | 280 | 246 | 239 |
Swell 2 Height (m) Direction Period (s) | W 6 | W 6 | W 6 | SW 14 | SW 14 | SW 14 | SSW 13 | SW 13 | SW 13 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | W 6 | SW 15 | S 12 | S 10 | S 12 | S 10 |
| kJ | 38 | 25 | 24 | 248 | 208 | 158 | 120 | 87 | 85 | 108 | 192 | 188 | 163 | 157 | 157 | 19 | 84 | 129 | 47 | 71 | 78 |
Swell 3 Height (m) Direction Period (s) | SSW 10 | S 10 | S 9 | S 10 | S 9 | S 9 | S 8 | SW 19 | SW 19 | SW 13 | SW 12 | SW 12 | SW 12 | SSW 20 | SSW 18 | SSE 9 | W 6 | W 5 | SW 21 | S 9 | SW 21 |
| kJ | 21 | 17 | 16 | 29 | 28 | 23 | 12 | 130 | 127 | 84 | 38 | 38 | 37 | 127 | 109 | 16 | 10 | 9 | 160 | 26 | 212 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 3 | W 4 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 5 | 9 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 119 | 14 | 14 | 14 | 37 | 0 | 14 | 37 | 14 | 16 | 37 | 14 | 119 | 37 | 0 | 37 | 37 | 0 | 36 | 36 | 20 |
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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