Surf Forecasts:
15th Street surf forecast from 28 Aug 2026:
- Best quality surf: Saturday 29 Aug, 2AM (local time) - 4.5ft (1.3m), 17s period, SSW swell with glassy winds.
- Most powerful swell: Saturday 29 Aug, 2AM (local time) - 4.5ft (1.3m), 17s period, SSW swell with 932 kJ wave energy.
- Next surfable swell (1★+): Saturday 29 Aug, 2AM (local time) - 4.5ft (1.3m), 17s 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 Saturday (Aug 29) at 2AM. The primary swell is predicted to be 1.3m and 17s period with a secondary swell of 0.5m and 8s. 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 1.3m 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+) | 2AM (Sat 29th Aug) | 4.5ft (1.3m) 17s |
| Best Surf | 2AM (Sat 29th Aug) | 4.5ft (1.3m) 17s |
| Most Powerful | 2AM (Sat 29th Aug) | 4.5ft (1.3m) 17s |
Table - best surf conditions forecast for 15th Street over the next 16 days.
The Lowdown
Alright, Rusty here. Let's take a look at what's cooking for 15th Street.
First up, right now on Friday the 28th of August, we've got a long-period groundswell rolling in, but it's messy. The water is way warmer than usual for this time of year, sitting at 76°, which is a big anomaly. The swell is small, around 2ft, and coming from the SW with a long 16-second period. The problem is the wind is cross-onshore, kicking up ripples, so it's not clean. The combined swell energy is moderate at 437. This is a pretty poor setup for a paddle, honestly. If this were a beach setup with more swell, it might look better for kiting, but as is, it's a skip.
Saturday the 29th of August through Tuesday the 1st of September sees the swell bumping up slightly, with heights around 4ft to 4ft. The wind switches to onshore, which is better than cross, but it's still not glassy. The period stays long, between 14 and 16 seconds, giving it some grunt. Combined energy climbs into the 700 to 800 range, which is still moderate. The problem is the consistency of the quality – it’s just marginal. The surf isn't bad, but it's not clean enough to get excited about. Lots of these sessions are marked as poor or marginal.
Wednesday the 2nd of September through to the 10th of September is a frustrating stretch. We see swell heights hanging around 2ft to 4ft, all from the SSW or SW. The period stays solidly in the 12 to 17-second range, so there's energy there (often moderate to strong, hitting 1038 on the 3rd). But the wind is mostly onshore, and the forecast keeps calling it poor or marginal. There's a little blip on Thursday the 3rd afternoon where the combined energy hits 1038 (strong) with 4ft of 14-second SSW swell and onshore wind, but it's still just a "2" rating. The whole week is a grind of small, onshore, mediocre surf. You could get a wave, but you'll be working for it.
Now, the standout window looks like Friday the 11th of September. The swell jumps to 5ft from the S, with a moderate period of 14 seconds. The combined energy surges to 1215 for the afternoon, which is strong. The wind is moderate cross-shore, which is workable. This is the best on offer in the whole 16-day run. It's still a bit of a cross-chop, so it's not perfect, but this is the session with the most power behind it. The morning of the 12th of September also shows 5ft from the S, but the wind goes back to a gentler cross-onshore, making it a bit bumpy again.
Honestly, 15th Street is in a bit of a lull. There's no clean, glassy, pumping day to point at. The standouts are the 11th of September with that bigger, stronger S swell, and maybe the 3rd of September afternoon for the strong energy levels. But for clean waves with light offshores? Not in this window. It's a lean period.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Sat morning, min 21°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 25°C on Wed morning, min 21°C on Mon morning). Wind will be generally light. | ||||||||||||||||||||
Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | |||||||||||||||
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) | SW 16 | SSW 19 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | S 12 | SSW 13 | S 11 | SW 18 | SW 18 | SSW 12 | SSW 13 | SSW 12 | SSW 15 | SSW 14 | SSW 13 |
Wave Graph | |||||||||||||||||||||
274 | 465 | 932 | 667 | 788 | 749 | 530 | 437 | 321 | 321 | 228 | 156 | 146 | 99 | 152 | 217 | 181 | 440 | 752 | 712 | 504 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | glassy | on | on | cross-on | cross-on | on | glassy | on | on | cross-on | on | on | cross-on | on | on | glassy | on | on | glassy |
High Tide | 10:16AM1.83m | 9:52PM2.09m | 10:38AM1.90m | 10:29PM1.96m | 11:03AM1.97m | 11:09PM1.79m | 11:31AM2.01m | 11:56PM1.60m | 12:05PM2.03m | 00:56AM1.39m | 12:47PM2.02m | 2:38AM1.23m | 1:47PM1.99m | ||||||||
Low Tide | 3:51PM0.76m | 4:22AM0.38m | 4:30PM0.69m | 4:46AM0.50m | 5:12PM0.65m | 5:09AM0.64m | 6:01PM0.64m | 5:33AM0.79m | 7:02PM0.65m | 5:57AM0.95m | 8:22PM0.65m | 6:23AM1.10m | 10:06PM0.60m | ||||||||
6:20 | — | — | 6:20 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:24 | — | — | |
— | 7:19 | — | — | 7:17 | — | — | 7:16 | — | — | 7:15 | — | — | 7:14 | — | — | 7:13 | — | — | 7:10 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 25 | 27 | 27 | 24 | 25 | 24 | 22 | 23 | 23 | 22 | 24 | 24 | 23 | 25 | 25 | 24 | 25 | 25 | 23 |
Feels °C | 28 | 27 | 28 | 28 | 27 | 26 | 24 | 23 | 22 | 23 | 22 | 22 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 23 | 23 |
Swell 1 Height (m) Direction Period (s) | S 9 | SSW 19 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | W 8 | W 8 | W 7 | S 12 | S 12 | S 11 | S 11 | S 10 | S 9 | SSW 12 | SSW 11 | SSW 12 | SSW 15 | SSW 14 | SSW 13 |
78 | 465 | 932 | 667 | 788 | 749 | 172 | 142 | 127 | 251 | 228 | 151 | 146 | 98 | 61 | 217 | 153 | 440 | 752 | 712 | 504 | |
Swell 2 Height (m) Direction Period (s) | SW 16 | S 8 | S 8 | WNW 7 | W 7 | W 8 | SSW 15 | SSW 14 | SSW 14 | WNW 7 | SSW 13 | W 5 | SSW 13 | SSW 13 | SSW 13 | S 9 | SSW 13 | W 5 | W 6 | SSW 18 | SSW 18 |
274 | 71 | 34 | 65 | 57 | 138 | 530 | 437 | 321 | 75 | 158 | 29 | 116 | 99 | 90 | 37 | 181 | 14 | 27 | 299 | 404 | |
Swell 3 Height (m) Direction Period (s) | SW 13 | SSW 13 | W 8 | SSW 8 | S 8 | S 8 | SSE 13 | S 12 | S 12 | SSW 14 | SSW 19 | SSW 13 | W 6 | SW 18 | SW 18 | SW 16 | SSW 16 | SSW 19 | SSW 20 | W 6 | W 6 |
85 | 118 | 29 | 21 | 10 | 11 | 55 | 72 | 70 | 321 | 35 | 156 | 23 | 80 | 152 | 132 | 175 | 148 | 78 | 27 | 46 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | W 6 | — | — | W 5 | W 5 | W 5 | W 5 | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | 49 | — | — | 20 | 16 | 13 | 14 | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 84 | 199 | 0 | 37 | 37 | 37 | 37 | 191 | 0 | 37 | 37 | 15 | 36 | 37 | 18 | 36 | 37 | 0 | 37 | 36 | 0 |
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.











