Surf Forecasts:
15th Street surf forecast from 19 Aug 2026:
- Best quality surf: Tuesday 25 Aug, 5AM (local time) - 2.5ft (0.8m), 17s 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★+): Wednesday 19 Aug, 8PM (local time) - 2.5ft (0.8m), 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 Wednesday (Aug 19) at 8PM. The primary swell is predicted to be 0.8m and 16s period with a secondary swell of 0.7m 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+) | 8PM (Wed 19th Aug) | 2.5ft (0.8m) 16s |
| Best Surf | 5AM (Tue 25th Aug) | 2.5ft (0.8m) 17s |
| 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, it's Rusty here. Let's get into what the next couple of weeks look like for this stretch of coast.
To be straight with you, the opening week is a slow one. We've got some long-period groundswell pushing in, but it's just not wrapping in cleanly, and a lot of the time the wind is hitting it from the wrong angle. We’re looking at a long stretch of days with poor to marginal conditions. There’s a gap of about a week here where you're really not missing much.
The first real glimmer of hope doesn't show up until the Saturday the 29th of August. The swell starts to nudge up and the energy in the water finally feels like it has some bite at about 702 (moderate combined swell energy). 15th Street (United States) starts to look like our best bet. The wind will be light and from the WSW, putting it cross-onshore, but with a clean 3ft SSW groundswell at a long 17 seconds, that’s got some potential for a few lined-up runners. It’s a consistent spot and a beach and reef setup, but the period is long, so expect those longer waits between sets with some proper push behind 'em. The water temp is about average for this time of year.
Sunday the 30th of August sees similar action. The morning is looking at the same 3ft SSW swell, again cross-onshore from the SW, but the light breeze will keep the surface tidy on the sets that come through. It’s still marginal but definitely the best we’ve seen.
Looking way out into the first week of September, there's a pulse of windswell arriving on Tuesday the 1st, but it’s a short, crumbly 4ft W swell with a period of only 8 seconds. That’s a weak, bumpy mess for a paddle board, but it would be more interesting for a kite surfer. After that, we settle back into smaller, cleaner looking groundswell from the SSW for the first half of the week, with the wind turning favourable and offshore on the 2nd. It’s a long-range call, so don't book the week off yet, but the pattern is finally shifting in our favour.
Overall, hold tight for that last weekend of August. Saturday the 29th and Sunday the 30th are your standout days for this run. It’s not epic, but it’s the best we've got. The rest of the time, keep the board waxed and wait for the charts to firm up.
Rusty.
Short Range ForecastMostly dry. Warm (max 24°C on Thu afternoon, min 21°C on Wed morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Sun morning, min 22°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | |||||||||||||||
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 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SW 17 | SSW 13 | SSW 14 | SSW 15 | SW 19 | SW 18 | SSW 14 | SW 18 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 382 | 387 | 242 | 239 | 236 | 170 | 156 | 137 | 98 | 90 | 239 | 222 | 224 | 194 | 273 | 194 | 177 | 330 | 264 | 208 | 203 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | glassy | cross-on | cross-on | cross-on | cross-on | on | glassy | on | on | glassy | cross-on | on | cross-on | on | on | cross-on | on | cross-on | cross-on |
High Tide | 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 | 9:15AM1.61m | 8:10PM2.17m | |||||||||
Low Tide | 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 | 2:05PM1.04m | 3:11AM0.24m | |||||||||
 | |  | | | | | | | | | | | |  |  | | | | | | |
 | 6:13 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:18 | — | — | 6:18 | — | — |
 | — | 7:30 | — | — | 7:29 | — | — | 7:28 | — | — | 7:25 | — | — | 7:24 | — | — | 7:23 | — | — | 7:22 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 23 | 22 | 23 | 24 | 22 | 24 | 24 | 22 | 25 | 25 | 23 | 26 | 24 | 23 | 25 | 25 | 23 | 25 | 24 | 23 |
Feels °C | 24 | 23 | 24 | 24 | 25 | 24 | 25 | 24 | 24 | 25 | 25 | 24 | 26 | 24 | 25 | 25 | 25 | 25 | 25 | 23 | 24 |
Swell 1 Height (m) Direction Period (s) | 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 | SW 18 | SW 17 | W 6 | SW 16 | SW 16 | SW 16 |
| kJ | 74 | 387 | 242 | 239 | 236 | 170 | 156 | 137 | 98 | 90 | 239 | 222 | 135 | 135 | 273 | 194 | 177 | 54 | 264 | 208 | 203 |
Swell 2 Height (m) Direction Period (s) | SSW 16 | W 7 | W 6 | W 6 | W 6 | WNW 6 | W 6 | WNW 6 | W 6 | W 6 | W 6 | W 10 | W 6 | SW 18 | SW 18 | SSW 12 | SSW 13 | SW 17 | S 13 | S 13 | S 12 |
| kJ | 382 | 59 | 36 | 27 | 18 | 12 | 12 | 12 | 6 | 21 | 19 | 52 | 27 | 194 | 255 | 87 | 93 | 330 | 126 | 125 | 80 |
Swell 3 Height (m) Direction Period (s) | SW 20 | W 14 | SW 18 | SW 19 | WNW 13 | WNW 12 | SW 18 | SSW 16 | SW 17 | SW 18 | SW 19 | SW 19 | SW 19 | W 6 | W 5 | SSW 15 | S 15 | S 13 | S 9 | W 18 | W 16 |
| kJ | 16 | 4 | 50 | 57 | 16 | 27 | 81 | 51 | 77 | 51 | 57 | 58 | 224 | 24 | 19 | 72 | 38 | 126 | 7 | 24 | 20 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 6 | WNW 6 | — | WNW 6 | WNW 6 | W 6 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 23 | 33 | — | 50 | 52 | 73 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 36 | 37 | 0 | 84 | 199 | 14 | 137 | 37 | 0 | 37 | 36 | 0 | 37 | 37 | 36 | 37 | 84 | 2 | 36 | 36 | 36 |
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.
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