Surf Forecasts:
15th Street surf forecast from 17 Aug 2026:
- Best quality surf: Monday 17 Aug, 8AM (local time) - 3ft (0.9m), 14s period, SSW swell with glassy winds.
- Most powerful swell: Sunday 16 Aug, 11PM (local time) - 3.5ft (1.0m), 14s period, SSW swell with 437 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 8AM (local time) - 3ft (0.9m), 14s 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 Monday (Aug 17) at 8AM. The primary swell is predicted to be 0.9m 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 1.0m 14s and forecast to arrive on Sunday (Aug 16) at 11PM. 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+) | 8AM (Mon 17th Aug) | 3ft (0.9m) 14s |
| Best Surf | 8AM (Mon 17th Aug) | 3ft (0.9m) 14s |
| Most Powerful | 11PM (Sun 16th Aug) | 3.5ft (1.0m) 14s |
Table - best surf conditions forecast for 15th Street over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's cast an eye over the next couple of weeks at 15th Street. It's a consistent beach and reef setup, usually a solid bet, but we've got a long stretch of 'meh' to wade through before anything decent shows up.
Right off the bat, water temps are sitting at 73°, which is a full 5° warmer than normal for this time of year. That’s a pretty wild anomaly for August, so the water's going to feel like a bath compared to usual.
The forecast shows a real dry spell. For the first week and a half, from the 16th through to the 27th, the surf is just not there. We're looking at tiny swell – mostly in the 2 ft to 3 ft range – with light onshore or cross-onshore breezes. The combined energy is weak, bouncing around (256 to 539) but never enough to push any decent shape. It’s a frustrating wait. The 19th of August does show a long period of 16 seconds from the SSW, which usually means clean lines, but the swell height is only 3 ft. It’s gonna be weak and disappointing, not worth a paddle.
That gap finally starts to break on Saturday, August 29th. The morning shows a 3 ft SSW groundswell (15-second period) with light offshore wind from the west. Combined energy finally climbs to a moderate 612. That’s the first window where the ocean looks alive. The water temp anomaly is still there, but by this point, you’ll be glad for the cleaner conditions.
Now, this 3 ft swell is gentle enough for all levels, but the long period (15 seconds) will push the sets through nicely. It’s a point and reef break, so that long-period energy won't just close out. The afternoon of the 29th nudges up to a 655 combined energy with the same 3 ft height, but the wind goes cross-onshore, so the morning is your clear window for the cleanest waves.
The Standout: If you’ve got the patience, the morning of Saturday, August 29th is the pick of the entire outlook. It’s the only real surfable day with that light offshore breeze and a touch more energy. Go Saturday morning or don't go at all. For the rest of the month, it’s a flat and frustrating wait. Crowds are "often" here, so expect company if you do paddle out.
That’s the long and short of it. Keep your eye on the 29th, but don’t get your hopes up for anything before.
Rusty.
Short Range ForecastMostly dry. Warm (max 24°C on Wed morning, min 20°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Thu night. Warm (max 26°C on Sat morning, min 21°C on Wed night). Wind will be generally light. | |||||||||||||||||||
Sun 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | ||||||||||||||
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 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 16 | SSW 17 | SSW 15 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SW 18 | SSW 14 | SSW 15 |
Wave Graph | ||||||||||||||||||||
443 | 367 | 367 | 264 | 316 | 232 | 243 | 339 | 382 | 387 | 242 | 236 | 236 | 170 | 156 | 137 | 98 | 90 | 239 | 222 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | on | on | cross-on | on | on | glassy | on | on | glassy | on | cross-on | glassy | cross-on | cross-on | glassy | on | on | glassy |
High Tide | 00:33AM1.60m | 1:00PM1.93m | 1:34AM1.37m | 1:40PM1.88m | 3:22AM1.21m | 2:32PM1.82m | 3:46PM1.79m | 8:25AM1.36m | 5:06PM1.82m | 8:27AM1.43m | 6:08PM1.91m | |||||||||
Low Tide | 6:45PM0.75m | 6:23AM0.77m | 7:50PM0.79m | 6:46AM0.96m | 9:14PM0.81m | 7:00AM1.12m | 10:58PM0.76m | 00:18AM0.65m | 10:08AM1.35m | 1:09AM0.54m | 11:57AM1.32m | 1:47AM0.43m | ||||||||
— | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — | |
7:32 | — | — | 7:31 | — | — | 7:30 | — | — | 7:30 | — | — | 7:29 | — | — | 7:28 | — | — | 7:25 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — |
Temp °C | 21 | 20 | 22 | 23 | 22 | 23 | 23 | 22 | 24 | 24 | 22 | 24 | 24 | 22 | 25 | 24 | 23 | 26 | 25 | 24 |
Feels °C | 21 | 20 | 22 | 23 | 22 | 23 | 22 | 23 | 25 | 24 | 24 | 25 | 24 | 24 | 26 | 24 | 25 | 27 | 25 | 26 |
Swell 1 Height (m) Direction Period (s) | SSW 15 | SSW 14 | SSW 14 | SSW 14 | W 6 | W 7 | W 7 | 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 |
443 | 367 | 367 | 264 | 60 | 72 | 57 | 339 | 382 | 387 | 242 | 236 | 236 | 170 | 156 | 137 | 98 | 90 | 239 | 222 | |
Swell 2 Height (m) Direction Period (s) | S 10 | S 10 | W 6 | SSW 18 | SSW 14 | SSW 16 | SSW 17 | W 6 | W 7 | W 6 | W 5 | W 6 | W 6 | W 6 | W 6 | SSW 16 | W 6 | SW 18 | W 10 | W 10 |
18 | 8 | 33 | 32 | 316 | 232 | 243 | 51 | 56 | 40 | 19 | 9 | 16 | 11 | 11 | 51 | 11 | 83 | 52 | 49 | |
Swell 3 Height (m) Direction Period (s) | W 11 | W 10 | S 10 | S 10 | S 10 | SSW 13 | SSW 13 | S 9 | SW 20 | W 14 | SW 18 | SW 19 | WNW 13 | WNW 12 | SW 18 | SW 18 | SW 17 | W 6 | SW 18 | SW 19 |
9 | 8 | 8 | 7 | 7 | 114 | 98 | 2 | 16 | 4 | 50 | 56 | 16 | 27 | 81 | 48 | 47 | 6 | 113 | 58 | |
Wind waves Height (m) Direction Period (s) | W 5 | W 5 | — | W 6 | — | — | — | — | — | — | — | — | — | — | — | WNW 6 | — | — | — | — |
19 | 27 | — | 47 | — | — | — | — | — | — | — | — | — | — | — | 12 | — | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 37 | 36 | 36 | 37 | 8 | 36 | 37 | 0 | 36 | 37 | 0 | 37 | 37 | 0 | 37 | 85 | 0 | 37 | 36 | 0 |
Best forecast wave conditions in San Diego County | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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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.











