Surf Forecasts:
15th Street surf forecast from 18 Aug 2026:
- Best quality surf: Monday 24 Aug, 5AM (local time) - 2ft (0.6m), 18s period, SW swell with glassy winds.
- Most powerful swell: Wednesday 19 Aug, 2PM (local time) - 3ft (0.9m), 16s period, SSW swell with 387 kJ wave energy.
- Next surfable swell (1★+): Tuesday 18 Aug, 11PM (local time) - 1.5ft (0.5m), 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 Tuesday (Aug 18) at 11PM. The primary swell is predicted to be 0.5m and 16s period with a secondary swell of 0.8m and 7s. 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 16s and forecast to arrive on Wednesday (Aug 19) 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 (Tue 18th Aug) | 1.5ft (0.5m) 16s |
| Best Surf | 5AM (Mon 24th Aug) | 2ft (0.6m) 18s |
| Most Powerful | 2PM (Wed 19th Aug) | 3ft (0.9m) 16s |
Table - best surf conditions forecast for 15th Street over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's take a look at what's on the table for the next couple of weeks.
To be real with you, the 16-day window for 15th Street starts off a bit flat. We’re looking at a long stretch of small, marginal surf for the first week and a half. The water temp is sitting at 71°, which is a touch warmer than normal for this time of year, so at least it’ll feel nice while you’re bobbing around waiting for a set that never really arrives. Most days are seeing a light westerly breeze which is technically offshore here, but with wave heights barely scraping 2 ft to 3 ft, it's a whole lot of nothing special. The combined swell energy is weak to moderate, ranging from 133 to 472, but the wave comment keeps calling it poor or marginal. From Tuesday the 18th all the way through the morning of Saturday the 29th, it's a long, slow grind of knee-to-waist high dribble.
The one and only true standout, the day to actually circle on the calendar, comes on the morning of Saturday, August 29th. We finally get a bit of a pulse, with the swell picking up to 3 ft from the SSW. The combined energy hits 518, which is the highest we see in the whole run. The winds are a light onshore from the west, not perfect but definitely surfable. It’s still a small day, so beginners can have a crack, but it’s the best we’ve got. The afternoon holds similar energy at 512, so there’s a window there.
But don't get too stoked. After that little bump, it drops back down. From Sunday the 30th right through to the end of the forecast on Wednesday, September 2nd, we're back to poor conditions with stronger cross-onshore winds making things choppy. The swell direction shifts around between SSW and S, but the combo of small size and messy wind means it's a write-off. For most of this period, the setup looks more interesting for a kite surfer than a paddle surfer looking for a proper wave.
So, to wrap it up: get your hopes up for Saturday the 29th of August if you're desperate for a surf, but otherwise, this is a long dry spell.
Rusty.
Short Range ForecastMostly dry. Warm (max 25°C on Wed morning, min 21°C on Tue morning). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Sun afternoon. Warm (max 26°C on Sat morning, min 23°C on Fri morning). Wind will be generally light. | ||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||||
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 16 | SSW 17 | SSW 15 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 14 | SSW 15 | SW 19 | SW 18 | SSW 14 | SW 18 | SW 17 | SW 17 |
Wave Graph  | |||||||||||||||||||||
 kJ | 232 | 243 | 339 | 382 | 387 | 242 | 239 | 236 | 170 | 156 | 137 | 135 | 90 | 239 | 222 | 224 | 197 | 273 | 194 | 177 | 270 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | on | on | cross | cross-on | on | glassy | cross-on | cross-on | glassy | on | on | glassy | on | on | on | on | on | cross-on |
High Tide | 1:40PM1.88m | 3:22AM1.21m | 2:32PM1.82m | 3:46PM1.79m | 8:25AM1.36m | 5:06PM1.82m | 8:27AM1.43m | 6:08PM1.91m | 8:41AM1.49m | 6:55PM2.01m | 8:57AM1.55m | 7:34PM2.10m | |||||||||
Low Tide | 9:14PM0.81m | 7:00AM1.12m | 10:58PM0.76m | 00:18AM0.65m | 10:08AM1.35m | 1:09AM0.54m | 11:57AM1.32m | 1:47AM0.43m | 12:51PM1.24m | 2:18AM0.34m | 1:30PM1.14m | 2:45AM0.28m | |||||||||
 | |  | | | |  | | | | |  | | | | |  | | | | | |
 | 6:13 | — | — | 6:13 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:18 | — | — |
 | — | 7:30 | — | — | 7:30 | — | — | 7:29 | — | — | 7:28 | — | — | 7:25 | — | — | 7:24 | — | — | 7:23 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — |
Temp °C | 23 | 24 | 22 | 25 | 24 | 23 | 25 | 25 | 22 | 25 | 25 | 23 | 26 | 25 | 23 | 26 | 26 | 25 | 26 | 25 | 24 |
Feels °C | 24 | 24 | 23 | 26 | 24 | 25 | 26 | 26 | 24 | 26 | 25 | 25 | 26 | 25 | 24 | 26 | 28 | 26 | 26 | 25 | 26 |
Swell 1 Height (m) Direction Period (s) | W 6 | W 6 | SSW 15 | W 7 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 14 | SSW 15 | SSW 13 | SSW 13 | SSW 14 | W 6 | SW 17 | W 7 |
| kJ | 52 | 54 | 339 | 74 | 387 | 242 | 239 | 236 | 170 | 156 | 137 | 135 | 90 | 239 | 222 | 137 | 135 | 273 | 36 | 177 | 110 |
Swell 2 Height (m) Direction Period (s) | SSW 16 | SSW 17 | W 6 | SSW 16 | W 7 | W 6 | W 6 | W 6 | W 7 | W 6 | WNW 6 | W 11 | W 7 | W 10 | W 10 | SW 19 | SW 18 | SW 18 | SW 18 | SSW 13 | SW 17 |
| kJ | 232 | 243 | 52 | 382 | 59 | 25 | 28 | 26 | 15 | 13 | 14 | 61 | 26 | 48 | 48 | 224 | 197 | 199 | 194 | 93 | 270 |
Swell 3 Height (m) Direction Period (s) | SSW 13 | SSW 13 | SW 19 | SW 20 | W 14 | SW 18 | SW 19 | WNW 13 | WNW 12 | SW 18 | SSW 16 | SW 17 | WNW 9 | SW 19 | SW 19 | W 6 | WNW 6 | SSE 10 | S 15 | S 15 | S 13 |
| kJ | 114 | 98 | 15 | 16 | 4 | 50 | 57 | 16 | 27 | 81 | 51 | 47 | 17 | 57 | 58 | 12 | 12 | 20 | 109 | 38 | 126 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 5 | — | W 6 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 21 | — | 47 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 36 | 37 | 8 | 36 | 37 | 14 | 84 | 37 | 0 | 119 | 37 | 0 | 37 | 37 | 0 | 37 | 1 | 37 | 36 | 36 | 36 |
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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