Surf Forecasts:
15th Street surf forecast from 14 Sep 2026:
- Best quality surf: Wednesday 16 Sep, 8AM (local time) - 3ft (0.9m), 17s period, SSW swell with glassy winds.
- Most powerful swell: Sunday 20 Sep, 2PM (local time) - 3ft (0.9m), 18s period, SW swell with 528 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 11PM (local time) - 2.5ft (0.8m), 10s period with W 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 Sunday (Sep 13) at 11PM. The primary swell is predicted to be 0.4m and 19s period with a secondary swell of 0.8m and 10s. Another secondary swell of 0.5m and 13s 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 0.9m 18s and forecast to arrive on Sunday (Sep 20) at 2PM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Sun 13th Sep) | 2.5ft (0.8m) 10s |
| Best Surf | 8AM (Wed 16th Sep) | 3ft (0.9m) 17s |
| Most Powerful | 2PM (Sun 20th Sep) | 3ft (0.9m) 18s |
Table - best surf conditions forecast for 15th Street over the next 16 days.
The Lowdown
Alright, let's chew the fat on 15th Street.
The water is running real warm, about 73°, which is a good 6° hotter than the long-term average for now. You'll feel it.
The first week is a bit of a bummer, to be honest. Swell is small, direction is mostly SW, and we've got a fair bit of cross-onshore and onshore breeze messing things up. The energy in the water is weak, mostly in the low to mid hundreds. Things perk up a touch on Wednesday the 16th with wave energy hitting 522, but it's still rated as marginal. You're looking at a 3ft swell from the SSW with a 17-second period – that's proper groundswell – but the wind is cross-onshore, so it'll be bumpy. That story carries on through to the end of the week.
Now, the following week shows a bit more promise. Around Sunday the 20th of September, the combined energy jumps to 652 and then 672 later in the day. We've got a 3ft SW swell with a super long 18-second period, so expect some serious push and nice lines, though it might break a bit straight on this beach and reef setup. The wind is forecast to be light and onshore, which might just keep it clean enough. Monday the 21st pushes the energy up even higher, hitting 738 in the afternoon with a 4ft SW swell and a 17-second period. Again, light onshore winds are the call. It's the best stretch in the outlook, but still a touch marginal.
Honestly, there's no one perfect day in this run. The window from the 20th to the 22nd has the most size and energy, but the wind never quite gives us a glassy, offshore winner. If you're keen and the forecasts tighten up, you could score some fun, powerful waves, especially if that long-period swell finds a better angle.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Mon afternoon, min 19°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 22°C on Fri afternoon, min 19°C on Wed night). Wind will be generally light. | |||||||||||||||||||
Sun 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | ||||||||||||||
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 | W 10 | W 8 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SW 19 | SW 19 | SW 19 | SW 18 | SW 18 | SW 18 |
Wave Graph  | ||||||||||||||||||||
 kJ | 130 | 220 | 190 | 192 | 188 | 163 | 157 | 157 | 475 | 302 | 366 | 259 | 246 | 242 | 303 | 303 | 299 | 379 | 375 | 375 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross | cross-on | cross-on | cross | cross-on | cross-on | glassy | cross-on | on | cross-on | on | on | glassy | on | on | cross-on | on | on | glassy |
High Tide | 11:29PM1.68m | 11:23AM2.06m | 00:17AM1.49m | 11:52AM1.99m | 1:21AM1.32m | 12:26PM1.89m | 3:50AM1.22m | 1:12PM1.79m | 2:34PM1.72m | 8:13AM1.44m | 4:22PM1.72m | |||||||||
Low Tide | 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 | 11:35PM0.67m | 10:10AM1.43m | 00:29AM0.57m | ||||||||
 |  | | | | | | | | | | | | | | | | | | | |
 | — | — | 6:31 | — | — | 6:31 | — | — | 6:33 | — | — | 6:33 | — | — | 6:33 | — | — | 6:35 | — | — |
 | 6:58 | — | — | 6:57 | — | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 21 | 22 | 23 | 21 | 22 | 22 | 20 | 21 | 21 | 20 | 21 | 21 | 19 | 21 | 22 | 21 | 21 | 22 | 21 |
Feels °C | 22 | 23 | 21 | 22 | 21 | 22 | 21 | 21 | 21 | 20 | 21 | 21 | 20 | 19 | 20 | 21 | 21 | 21 | 22 | 22 |
Swell 1 Height (m) Direction Period (s) | W 7 | W 10 | W 8 | W 10 | W 9 | W 9 | W 9 | W 8 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SW 19 | SW 19 | W 6 | W 6 | SW 18 | W 6 |
| kJ | 56 | 220 | 190 | 186 | 99 | 76 | 79 | 49 | 475 | 302 | 366 | 259 | 246 | 242 | 303 | 303 | 43 | 49 | 375 | 64 |
Swell 2 Height (m) Direction Period (s) | SW 13 | SW 13 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | W 6 | W 6 | S 9 | S 12 | S 10 | SSW 10 | SSW 14 | SSW 13 | SSW 13 | SW 18 | W 6 | SW 18 |
| kJ | 87 | 85 | 108 | 192 | 188 | 163 | 157 | 157 | 21 | 10 | 43 | 71 | 50 | 80 | 180 | 158 | 184 | 379 | 49 | 375 |
Swell 3 Height (m) Direction Period (s) | SW 19 | SW 19 | SW 13 | SW 12 | SW 12 | SW 12 | SSW 20 | SSW 18 | S 9 | S 9 | SSW 13 | SW 21 | SW 21 | SW 21 | S 9 | S 8 | SW 19 | SSW 13 | SSW 13 | SSW 12 |
| kJ | 130 | 127 | 84 | 38 | 38 | 37 | 127 | 110 | 26 | 25 | 34 | 160 | 160 | 212 | 24 | 12 | 299 | 137 | 95 | 57 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | WNW 5 | — | — | W 5 | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 9 | — | — | 14 | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 14 | 37 | 14 | 119 | 137 | 14 | 14 | 37 | 0 | 37 | 37 | 3 | 36 | 37 | 10 | 36 | 36 | 14 | 36 | 37 |
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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