Surf Forecasts:
15th Street surf forecast from 23 Aug 2026:
- Best quality surf: Saturday 29 Aug, 5AM (local time) - 4ft (1.2m), 17s period, SSW swell with glassy winds.
- Most powerful swell: Saturday 29 Aug, 2AM (local time) - 4ft (1.2m), 17s period, SSW swell with 867 kJ wave energy.
- Next surfable swell (1★+): Sunday 23 Aug, 5AM (local time) - 2.5ft (0.7m), 16s 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 Sunday (Aug 23) at 5AM. The primary swell is predicted to be 0.7m and 16s period with a secondary swell of 0.5m 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 1.2m 17s and forecast to arrive on Saturday (Aug 29) at 2AM. 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+) | 5AM (Sun 23rd Aug) | 2.5ft (0.7m) 16s |
| Best Surf | 5AM (Sat 29th Aug) | 4ft (1.2m) 17s |
| Most Powerful | 2AM (Sat 29th Aug) | 4ft (1.2m) 17s |
Table - best surf conditions forecast for 15th Street over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s on the table for the next couple of weeks.
To be honest, the next 16 days are a bit of a mixed bag. We’ve got a real flat spell to kick things off, and nothing really worth paddling out for pops up for a good stretch. The first sign of any life shows up on the morning of Sunday, August 23rd, but it’s small, weak, and blown out. The wind is onshore and the swell is just 2ft from the SW, with a long period of 19 seconds. The combined energy is 402 (moderate), but the wave comment says it all: “poor surf conditions.” It’s not until the afternoon of Tuesday, August 25th that we get a tiny glimmer, with a score of 1/10, but it’s still marginal.
We go through a whole week of this. Wednesday the 26th shows a bump in size to 5ft from the S, but the wind is cross-shore and strong, creating a messy cross-chop. The energy is up to 916 (moderate), but the quality just isn’t there. The onshore wind keeps the surf poor or marginal right through to the end of the month.
The real standout, the one that gets my heart beating a little faster, is a long way off. It’s the afternoon of Sunday, September 6th. The forecast shows 3ft of SSW swell, with a period of 15 seconds – that’s a proper long-period groundswell. The combined energy is 483 (moderate), so it’s not a beast, but the magic is in the wind. We’re looking at glassy conditions, with the wind coming from the north at just 3 mph. The wave comment says “expect good surf conditions,” and that’s as good as it gets in this window. For a beach and reef setup like 15th Street, that long period will mean clean, lined-up waves with nice gaps between sets. The 3ft height is perfect for the average surfer.
The next morning, Monday the 7th of September, the wind shifts back to a cross-onshore, and the size drops, so that Sunday afternoon window is your one and only winner. It’s a long way out, so keep an eye on the forecasts, but that’s the one to circle on the calendar.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Tue morning, min 23°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Fri morning, min 22°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | ||||||||||||||
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 15 | SW 19 | SW 18 | SSW 14 | SW 18 | SW 17 | SW 17 | SW 16 | SW 16 | S 13 | S 12 | S 12 | S 12 | S 10 | S 10 | SSW 18 | SSW 16 | SSW 19 | SSW 17 |
Wave Graph  | |||||||||||||||||||
 kJ | 222 | 224 | 197 | 273 | 249 | 175 | 330 | 264 | 208 | 581 | 584 | 553 | 446 | 257 | 196 | 270 | 343 | 419 | 867 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | glassy | on | on | glassy | on | cross-on | glassy | cross | cross-on | cross | cross-on | on | glassy | on | on | glassy |
High Tide | 8:41AM1.49m | 6:55PM2.01m | 8:57AM1.55m | 7:34PM2.10m | 9:15AM1.61m | 8:10PM2.17m | 9:34AM1.68m | 8:44PM2.19m | 9:54AM1.75m | 9:18PM2.17m | 10:16AM1.83m | 9:52PM2.09m | |||||||
Low Tide | 1:47AM0.43m | 12:51PM1.24m | 2:18AM0.34m | 1:30PM1.14m | 2:45AM0.28m | 2:05PM1.04m | 3:11AM0.24m | 2:39PM0.94m | 3:35AM0.25m | 3:14PM0.84m | 3:59AM0.29m | 3:51PM0.76m | 4:22AM0.38m | ||||||
 |  |  | | | | | | | | | | |  | |  | | | | |
 | — | 6:16 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:20 | — | — | 6:20 | — | — |
 | — | — | 7:24 | — | — | 7:23 | — | — | 7:22 | — | — | 7:22 | — | — | 7:20 | — | — | 7:19 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 26 | 26 | 25 | 26 | 26 | 24 | 27 | 27 | 25 | 25 | 25 | 23 | 25 | 25 | 25 | 27 | 27 | 24 |
Feels °C | 25 | 27 | 27 | 28 | 27 | 26 | 26 | 27 | 27 | 27 | 25 | 24 | 24 | 26 | 26 | 27 | 28 | 27 | 25 |
Swell 1 Height (m) Direction Period (s) | SSW 15 | W 6 | W 6 | SSW 14 | SW 18 | SW 17 | SW 17 | SW 16 | S 13 | S 13 | S 12 | S 12 | S 12 | S 10 | S 10 | S 9 | WNW 8 | S 9 | SSW 17 |
| kJ | 222 | 41 | 27 | 273 | 249 | 175 | 330 | 264 | 176 | 581 | 584 | 553 | 446 | 257 | 196 | 137 | 99 | 94 | 867 |
Swell 2 Height (m) Direction Period (s) | W 6 | SSW 13 | SSW 13 | SW 18 | W 6 | W 6 | S 13 | S 13 | SW 16 | W 6 | WNW 7 | W 7 | SW 15 | WNW 7 | W 8 | SSW 18 | S 9 | WNW 8 | W 8 |
| kJ | 16 | 137 | 135 | 199 | 17 | 17 | 126 | 126 | 208 | 49 | 84 | 47 | 171 | 57 | 63 | 270 | 103 | 65 | 84 |
Swell 3 Height (m) Direction Period (s) | SW 19 | SW 19 | SW 18 | W 5 | SSW 12 | SSW 13 | W 5 | W 6 | SSE 12 | SW 16 | SW 16 | SW 16 | W 7 | SW 14 | SW 14 | W 9 | SSW 16 | SSW 19 | S 8 |
| kJ | 58 | 224 | 197 | 17 | 87 | 93 | 12 | 24 | 111 | 203 | 248 | 196 | 38 | 132 | 130 | 39 | 343 | 419 | 36 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 36 | 36 | 36 | 0 | 37 | 37 | 0 | 37 | 114 | 0 | 137 | 84 | 14 | 84 | 37 | 0 | 37 | 37 | 0 |
Best forecast wave conditions in San Diego County | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our 15th Street surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
Nearest