
Surf Forecasts:
15th Street surf forecast from 12 Sep 2026:
- Best quality surf: Thursday 17 Sep, 8AM (local time) - 3ft (0.9m), 16s period, SSW swell with glassy winds.
- Most powerful swell: Wednesday 16 Sep, 11AM (local time) - 3ft (0.9m), 17s period, SSW swell with 475 kJ wave energy.
- Next surfable swell (1★+): Tuesday 15 Sep, 11PM (local time) - 1.5ft (0.4m), 19s 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 (Sep 15) at 11PM. The primary swell is predicted to be 0.4m and 19s period with a secondary swell of 0.6m and 8s. Another secondary swell of 0.4m and 16s is also forecast. 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 17s and forecast to arrive on Wednesday (Sep 16) at 11AM. 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 15th Sep) | 1.5ft (0.4m) 19s |
| Best Surf | 8AM (Thu 17th Sep) | 3ft (0.9m) 16s |
| Most Powerful | 11AM (Wed 16th Sep) | 3ft (0.9m) 17s |
Table - best surf conditions forecast for 15th Street over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get stuck into the next 16 days for our little stretch of coast. I won’t sugar-coat it – this is a long, flat, and frustrating outlook. For a spot that’s usually consistent, we’re looking at a whole lot of nothing for the best part of the first week. The water temperature is sitting at 72° which is much warmer than normal for this time of year, but you won’t be feeling it while you’re sitting on your board staring at a flat ocean.
The next surf window of any kind doesn’t appear until around Wednesday the 16th of September, and even then, it’s purely marginal. The wind is mostly cross-on or onshore for the first week, with a light breeze here and there, but it’s paired with poor surf conditions across the board. The only break on offer here is 15th Street, a beach-and-reef setup that’s exposed to a WSW swell. That optimum direction matches up with the SW swells we're seeing, but the quality just isn’t there.
For the start of the period – Friday the 11th through to Tuesday the 15th – it’s a write-off. Swells are tiny, weak, and messy. On Friday afternoon, we’ve got a 3ft SW groundswell with a period of 15 seconds and weak energy (402), but it’s cross-shore wind that’s chopping it up. Saturday and Sunday are even smaller.
The first glimmer of anything halfway worth paddling out for comes on Wednesday the 16th of September. The early morning shows a 3ft SSW swell with a period of 17 seconds, combined energy climbing to moderate (526), and a light onshore wind that might just keep it rideable. It’s still only a marginal call – scores a 1 – so don’t get too excited. Thursday the 17th afternoon sees a 3ft SSW swell, period 15 seconds, energy strong (547), but the wind is onshore and it’s only a 1 out of 10. This same pattern repeats through Friday the 18th (2ft SW, 19 second period, 544 energy) – it’s long-period groundswell with decent energy, but the shape will be tough on a beachy setup. Point breaks would love this, but here it’s a constant battle.
Finally, the standout, if you can call it that, lands on Saturday the 19th of September for the morning session. The swell is 3ft from the SW with an 18-second period. The combined energy is a solid 548. The wind is a light cross-shore breeze from the WSW, which is about as good as it’s going to get for 15th Street. It’s the only session that scores a 2, and with light wind ripples and a bit of energy in the water, there might be the odd clean, workable wave for an experienced surfer who knows the bank. Crowds are likely here, and this setup is inconsistent at best, so getting a nugget will take patience. After that, Sunday the 20th morning offers similar energy (708) but the same marginal verdict, then it fades back into poor through the end of the window.
So, the honest truth? If you’ve got a kite, the moderate energy in the second week (400-700 range) with consistent onshore wind might actually make for a better session than a paddle. For the surfers, Saturday the 19th morning is your best bet, but keep expectations in the gutter. We’re in a slow, sleepy pattern, and it might take a storm somewhere out there to wake things up.
Rusty.
Short Range ForecastMostly dry. Warm (max 25°C on Fri afternoon, min 21°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 23°C on Mon afternoon, min 19°C on Tue night). Wind will be generally light. | |||||||||||||||||||
Fri 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | ||||||||||||||
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 15 | SW 15 | SW 14 | SW 14 | SW 14 | SSW 13 | SW 19 | W 10 | W 8 | SW 18 | SW 17 | SW 16 | SSW 20 | SW 16 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 |
Wave Graph | ||||||||||||||||||||
360 | 309 | 248 | 208 | 158 | 120 | 130 | 216 | 153 | 192 | 188 | 163 | 127 | 157 | 475 | 339 | 402 | 280 | 305 | 242 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | glassy | on | on | glassy | on | on | cross |
High Tide | 10:03PM2.06m | 10:28AM2.09m | 10:45PM1.88m | 10:55AM2.09m | 11:29PM1.68m | 11:23AM2.06m | 00:17AM1.49m | 11:52AM1.99m | 1:21AM1.32m | 12:26PM1.89m | 3:50AM1.22m | 1:12PM1.79m | ||||||||
Low Tide | 4:00PM0.53m | 4:13AM0.43m | 4:42PM0.49m | 4:39AM0.61m | 5:26PM0.51m | 5:03AM0.79m | 6:13PM0.56m | 5:23AM0.96m | 7:07PM0.64m | 5:35AM1.11m | 8:21PM0.72m | 5:02AM1.22m | 10:05PM0.74m | |||||||
— | — | 6:30 | — | — | 6:31 | — | — | 6:31 | — | — | 6:31 | — | — | 6:33 | — | — | 6:33 | — | — | |
7:00 | — | — | 6:59 | — | — | 6:58 | — | — | 6:57 | — | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 23 | 24 | 24 | 22 | 24 | 23 | 21 | 23 | 23 | 21 | 22 | 22 | 20 | 21 | 22 | 20 | 22 | 21 | 20 |
Feels °C | 25 | 25 | 25 | 24 | 24 | 24 | 22 | 23 | 22 | 22 | 22 | 22 | 21 | 21 | 21 | 22 | 21 | 22 | 20 | 21 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 15 | SW 14 | W 6 | W 6 | W 7 | W 7 | W 10 | W 8 | W 8 | W 9 | W 8 | W 9 | W 8 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 |
360 | 309 | 248 | 35 | 45 | 103 | 97 | 216 | 153 | 114 | 99 | 66 | 81 | 49 | 475 | 339 | 402 | 280 | 305 | 242 | |
Swell 2 Height (m) Direction Period (s) | W 6 | W 6 | W 6 | SW 14 | SW 14 | SSW 13 | SW 13 | SW 13 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | W 6 | W 6 | S 11 | S 10 | S 11 | S 11 |
25 | 24 | 38 | 208 | 158 | 120 | 87 | 85 | 108 | 192 | 188 | 163 | 122 | 157 | 21 | 16 | 57 | 49 | 79 | 121 | |
Swell 3 Height (m) Direction Period (s) | S 10 | S 9 | S 10 | S 9 | S 9 | S 8 | SW 19 | SW 19 | SW 13 | SW 12 | SW 12 | SW 12 | SSW 20 | SSW 18 | S 10 | S 10 | W 5 | S 12 | SW 21 | W 5 |
17 | 16 | 29 | 28 | 23 | 12 | 130 | 127 | 84 | 38 | 38 | 37 | 127 | 109 | 30 | 29 | 9 | 69 | 160 | 10 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | WNW 3 | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 84 | 14 | 119 | 37 | 9 | 14 | 37 | 14 | 16 | 137 | 14 | 119 | 137 | 0 | 37 | 37 | 0 | 36 | 36 | 18 |
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)
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.










