Surf Forecasts:
15th Street surf forecast from 1 Sep 2026:
- Best quality surf: Monday 7 Sep, 5AM (local time) - 10ft (3.0m), 15s period, S swell with cross-offshore winds.
- Most powerful swell: Monday 7 Sep, 8AM (local time) - 10ft (3.0m), 15s period, S swell with 3,766 kJ wave energy.
- Next surfable swell (1★+): Thursday 3 Sep, 2AM (local time) - 2.5ft (0.7m), 17s period with SW 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 Thursday (Sep 03) at 2AM. The primary swell is predicted to be 0.7m and 17s period with a secondary swell of 1.0m and 6s. Another secondary swell of 0.9m and 12s is also forecast. Another secondary swell of 1.0m and 6s 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 3.0m 15s and forecast to arrive on Monday (Sep 07) at 8AM. Winds are predicted to be cross-offshore at the time the swell arrives.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Thu 3rd Sep) | 2.5ft (0.7m) 17s |
| Best Surf | 5AM (Mon 7th Sep) | 10ft (3.0m) 15s |
| Most Powerful | 8AM (Mon 7th Sep) | 10ft (3.0m) 15s |
Table - best surf conditions forecast for 15th Street over the next 16 days.
The Lowdown
Alright, Rusty here. Let's get into it.
The next few days are looking pretty flat and weak, but there's a big pulse of swell coming our way later in the period that could be something special. We've got a gap of no real surf from now until the weekend, so hang tight.
Water temp is sitting at a balmy 77°, which is a whopping 9° warmer than usual for this time of year. That's really unusual, we're talking tropical-feeling water.
The first real glimmer of hope is on Thursday, September 4th afternoon. The wind will be light and offshore from the west-southwest, and we'll see a 4ft SW groundswell (16 sec period). With moderate combined wave energy (995), it's a marginal call but the cleanest option we've had in days.
Friday, September 5th morning sees a similar 3ft SSW groundswell (16 sec) and light offshore winds. The energy is still moderate (965). By the afternoon, the swell starts to build: 5ft from the south (14 sec) with light offshore wind, and the energy jumps to 1446. This is getting more interesting.
Now, the real standout is Sunday, September 6th afternoon. We're looking at a 8ft south groundswell (15 sec) with a light cross-offshore breeze from the north-northeast at 9 mph. The combined energy is very strong (2268) and the conditions are clean. This is excellent surf for experienced surfers. The long period (15 sec) means it's a proper groundswell, which will work best at point breaks and reefs, but here at 15th Street (a beach and reef setup) it could still be firing.
Monday, September 7th, is worth mentioning but with a big caveat. The swell is predicted to be 10ft from the south-southeast, with a very long period (14-15 sec) and very strong energy (3445 in the morning). The wind is offshore, but the size is only for experts. This is big, powerful, and heavy. It's breaking too big for the break, so only the most experienced crew should even think about it. The south-east wind on Monday afternoon is a strong 28 mph, so that's a no-go for paddling, but that setup could be more interesting for kite surfing.
By Tuesday, September 8th, the swell is still 10ft but the wind is onshore and messy, so it's a write-off. The rest of the period from Wednesday, September 9th, onward drops off quickly into small, weak, and often choppy conditions. Not worth getting excited about.
So, your best bet is Sunday, September 6th afternoon. That's the call. Clean, solid, and powerful. Don't be late.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Mon morning, min 20°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 23°C on Fri morning, min 20°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | |||||||||||||||
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) | S 13 | S 12 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SW 16 | SSW 13 | SW 17 | SSW 11 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | S 14 | S 14 | S 14 | S 15 | S 15 |
Wave Graph | |||||||||||||||||||||
257 | 228 | 156 | 116 | 114 | 92 | 211 | 242 | 302 | 196 | 547 | 651 | 587 | 717 | 620 | 512 | 931 | 1315 | 1772 | 2211 | 3093 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | on | on | cross-on | on | on | glassy | on | cross-on | cross-on | cross | on | glassy | on | on | cross-on | on | cross-off | cross-off |
High Tide | 11:31AM2.01m | 11:56PM1.60m | 12:05PM2.03m | 00:56AM1.39m | 12:47PM2.02m | 2:38AM1.23m | 1:47PM1.99m | 6:09AM1.25m | 3:12PM1.98m | 7:12AM1.38m | 4:45PM2.04m | 7:40AM1.51m | 6:00PM2.14m | ||||||||
Low Tide | 6:01PM0.64m | 5:33AM0.79m | 7:02PM0.65m | 5:57AM0.95m | 8:22PM0.65m | 6:23AM1.10m | 10:06PM0.60m | 6:57AM1.24m | 11:36PM0.46m | 10:00AM1.32m | 00:39AM0.30m | 11:49AM1.23m | 1:26AM0.18m | ||||||||
6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:26 | — | — | |
— | 7:15 | — | — | 7:14 | — | — | 7:13 | — | — | 7:10 | — | — | 7:09 | — | — | 7:08 | — | — | 7:07 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 9 | 5 |
Temp °C | 23 | 23 | 21 | 23 | 23 | 21 | 22 | 22 | 21 | 22 | 22 | 21 | 23 | 23 | 21 | 23 | 23 | 23 | 24 | 23 | 24 |
Feels °C | 23 | 22 | 21 | 23 | 21 | 20 | 21 | 20 | 20 | 21 | 20 | 23 | 22 | 22 | 22 | 24 | 23 | 24 | 24 | 25 | 25 |
Swell 1 Height (m) Direction Period (s) | S 13 | S 12 | S 11 | S 11 | S 10 | W 5 | W 6 | SSW 13 | W 6 | WNW 7 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | S 13 | S 14 | S 14 | S 14 | S 15 | S 15 |
255 | 228 | 151 | 114 | 106 | 29 | 33 | 242 | 76 | 73 | 547 | 651 | 587 | 717 | 620 | 440 | 931 | 1315 | 1772 | 2211 | 3093 | |
Swell 2 Height (m) Direction Period (s) | W 7 | SSW 14 | SSW 13 | W 6 | SSW 13 | SSW 13 | SW 16 | SW 16 | SSW 12 | SSW 11 | W 7 | W 6 | W 7 | W 6 | S 14 | SSW 16 | SSW 16 | SSW 15 | SW 14 | W 10 | WNW 10 |
56 | 161 | 156 | 23 | 114 | 92 | 211 | 129 | 196 | 176 | 70 | 47 | 74 | 47 | 405 | 512 | 506 | 367 | 251 | 31 | 34 | |
Swell 3 Height (m) Direction Period (s) | SSW 14 | SW 19 | W 5 | SSW 13 | SW 18 | S 9 | SSW 12 | SSW 20 | SW 17 | SW 16 | SSW 10 | SSW 11 | SW 10 | SSE 15 | W 5 | W 5 | WNW 5 | W 10 | — | WNW 12 | — |
257 | 56 | 19 | 116 | 80 | 41 | 107 | 41 | 302 | 196 | 55 | 76 | 54 | 231 | 18 | 13 | 9 | 50 | — | 14 | — | |
Wind waves Height (m) Direction Period (s) | — | W 6 | — | — | W 6 | WNW 5 | — | W 6 | WNW 6 | — | — | — | — | — | — | — | — | — | — | WNW 6 | — |
— | 36 | — | — | 32 | 42 | — | 32 | 82 | — | — | — | — | — | — | — | — | — | — | 12 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 37 | 37 | 14 | 36 | 37 | 18 | 36 | 37 | 0 | 36 | 284 | 4 | 85 | 37 | 0 | 36 | 36 | 18 | 20 | 0 | 18 |
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.











