
Surf Forecasts:
15th Street surf forecast from 8 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★+): Tuesday 8 Sep, 8PM (local time) - 3.5ft (1.1m), 10s 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 Tuesday (Sep 08) at 8PM. The primary swell is predicted to be 1.1m and 10s period with a secondary swell of 0.5m and 13s. Another secondary swell of 0.9m 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-onshore at the time the swell arrives.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Tue 8th Sep) | 3.5ft (1.1m) 10s |
| 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, Rusty here. Let's talk about what's on the cards for 15th Street.
We're looking at a pretty flat run for the next couple of weeks. The wave energy is there, but it's all wind-swell, short-period stuff, and the wind is just never in our favour. We get a little bump of energy mid-week, but the cross-onshore winds are going to wreck it. The water is a warm 72°, which is a good couple of degrees above normal for this time of year.
The first decent chance isn't until Wednesday morning, the 16th of September. We'll see a 3ft swell from the SSW with a period of 17 seconds, that's some proper groundswell energy (combined energy of 638). The wind is light and cross-onshore, so it'll be a bit bumpy, but it's the best we've got. The waves will be holding some shape from that long period, but it's a beach-and-reef spot, so the long period might make it a bit straight and fast. Still, it's a surfable option.
The same pattern rolls through the weekend. Mornings on the 19th and 20th of September offer a similar 3ft to 3ft SSW swell, again with nice long periods (18-19 seconds) and light cross-onshore winds. The combined energy climbs to 734 on the Sunday morning, the 20th, which is the most punch we'll see. But it's still not clean.
Honestly, the standout window is the morning of Monday, the 21st of September. The combined energy hits 755, with a 4ft swell from the SW at 17 seconds. The wind is light cross-onshore, which is the best it gets. It's still not perfect, but if you're desperate for a paddle, that's your window. For a break that's consistent, the crowds are often around, so you'll have company.
It's a grim outlook for the immediate future. The onshore wind just keeps the surface messy. If you’re a kite surfer, this whole period with the cross-onshore winds and choppy water might look more interesting. For a paddle surfer, it's a waiting game.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Tue morning. Warm (max 27°C on Tue morning, min 21°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 23°C on Fri morning, min 19°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | |||||||||||||||
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 10 | SSW 10 | SW 16 | SW 16 | SW 16 | SW 17 | SW 17 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | W 8 | W 8 | SW 19 | W 9 | W 10 | SW 17 |
Wave Graph | |||||||||||||||||||||
237 | 232 | 167 | 214 | 326 | 419 | 547 | 496 | 483 | 465 | 360 | 309 | 248 | 208 | 158 | 191 | 157 | 177 | 263 | 220 | 188 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | on | on | cross | cross-on | cross-on | cross | cross | cross | cross-on | cross-on | cross-on | cross | cross | cross-on | cross-on | cross-on | cross-on | cross |
High Tide | 8:36AM1.76m | 7:50PM2.29m | 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 | 1:47PM0.90m | 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 | ||||||||
6:26 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — | 6:31 | — | — | |
— | 7:05 | — | — | 7:02 | — | — | 7:01 | — | — | 7:00 | — | — | 6:59 | — | — | 6:58 | — | — | 6:57 | — | |
mm | 2 | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 27 | 25 | 26 | 26 | 24 | 25 | 25 | 23 | 23 | 23 | 22 | 21 | 21 | 20 | 22 | 22 | 20 | 21 | 22 | 20 |
Feels °C | 28 | 26 | 27 | 27 | 26 | 25 | 25 | 24 | 24 | 22 | 22 | 22 | 20 | 20 | 21 | 21 | 21 | 21 | 21 | 20 | 20 |
Swell 1 Height (m) Direction Period (s) | SSW 10 | SSW 10 | SSW 9 | SW 16 | SW 16 | SW 17 | SW 17 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | W 7 | W 7 | W 7 | W 8 | W 8 | W 8 | W 9 | W 10 | W 8 |
237 | 232 | 139 | 214 | 326 | 419 | 547 | 496 | 483 | 465 | 360 | 309 | 89 | 94 | 127 | 191 | 157 | 173 | 263 | 220 | 161 | |
Swell 2 Height (m) Direction Period (s) | SSW 13 | SSW 13 | SSW 13 | SSW 9 | SSW 12 | SSW 12 | W 5 | W 6 | W 6 | W 6 | W 6 | W 6 | SW 14 | SW 14 | SW 14 | SSW 13 | SW 13 | SW 19 | SW 18 | SW 18 | SW 17 |
204 | 158 | 135 | 67 | 85 | 82 | 15 | 16 | 16 | 38 | 37 | 47 | 248 | 208 | 158 | 120 | 87 | 177 | 150 | 192 | 188 | |
Swell 3 Height (m) Direction Period (s) | SW 18 | SW 18 | SW 16 | SSW 13 | SSW 8 | W 5 | S 12 | SSW 12 | SSW 11 | S 10 | SSW 10 | S 9 | WSW 14 | S 9 | S 8 | SW 19 | SW 19 | SW 13 | SW 13 | SSW 12 | SW 12 |
111 | 112 | 167 | 133 | 45 | 11 | 72 | 45 | 39 | 19 | 20 | 15 | 41 | 14 | 13 | 58 | 130 | 85 | 84 | 61 | 38 | |
Wind waves Height (m) Direction Period (s) | WNW 4 | WNW 4 | WNW 5 | W 5 | WNW 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
6 | 28 | 17 | 11 | 11 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 37 | 36 | 36 | 36 | 37 | 14 | 14 | 14 | 14 | 119 | 137 | 14 | 119 | 37 | 14 | 119 | 37 | 37 | 14 | 14 | 14 |
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.










