
Surf Forecasts:
15th Street surf forecast from 5 Sep 2026:
- Best quality surf: Tuesday 8 Sep, 2AM (local time) - 5.5ft (1.7m), 12s period, SSW swell with cross-offshore winds.
- Most powerful swell: Monday 7 Sep, 5AM (local time) - 6.5ft (2.0m), 14s period, SSW swell with 1,548 kJ wave energy.
- Next surfable swell (1★+): Tuesday 8 Sep, 2AM (local time) - 5.5ft (1.7m), 12s 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 08) at 2AM. The primary swell is predicted to be 1.7m and 12s period with a secondary swell of 0.3m and 18s. Another secondary swell of 0.6m and 4s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at 15th Street in the next 16 days are 2.0m 14s and forecast to arrive on Monday (Sep 07) at 5AM. 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+) | 2AM (Tue 8th Sep) | 5.5ft (1.7m) 12s |
| Best Surf | 2AM (Tue 8th Sep) | 5.5ft (1.7m) 12s |
| Most Powerful | 5AM (Mon 7th Sep) | 6.5ft (2.0m) 14s |
Table - best surf conditions forecast for 15th Street over the next 16 days.
The Lowdown
Alright, let’s break it down. We’ve got one spot to talk about, and it’s a bit of a slow burn.
The water’s warm, sitting at 73°, which is a lot warmer than usual for this time of year – a nice surprise for the early crew.
The only real chance is Saturday morning, September 5th. We’ve got a 4ft S swell with a 14-second period, and a light 6 mph W wind right onshore. The combined energy is moderate at 1215, so there’s some push. This is the pick of the litter, but it’s not a clean day. The wind is onshore, so expect some chop. Still, it’s the only session that’s even worth a mention.
From Saturday afternoon, it’s all downhill. The wind turns cross-on and picks up, and the swell gets a bit bigger but turns ugly. By Sunday and Monday, we’re looking at 5ft to 6ft of S/SSW swell with cross-on breezes, making it rough and choppy. The energy stays moderate (around 1234 to 1277), but the quality is poor. Not a fun paddle.
After Monday, the swell drops and the energy fades. From Tuesday, September 8th, right through the rest of the forecast, we’re in a long flat spell. Swell heights drop below 3ft, and the combined energy falls into the 200s and 300s – weak. The winds are light, but the surf is just too small and inconsistent. There are a few days with a very long period groundswell (17-22 seconds) in the second week, but the heights are tiny (1ft to 3ft), so it’s barely a ripple. Those long-period swells can be tricky at a beach-and-reef setup like 15th Street, often breaking too straight, but with no size, it doesn’t matter.
There’s a gap of about 11 days with no real surf. A few marginal sessions pop up around September 20th, but it’s still small and weak. You’d be waiting a long time for a wave.
So, the standout is the Saturday morning session. It’s not clean, but it’s the only one with any life. The rest of the window is a bust unless something changes. A quiet spell for the area.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Sat afternoon. Warm (max 27°C on Sun morning, min 21°C on Sat morning). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Wed afternoon. Warm (max 28°C on Wed morning, min 22°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | |||||||||||||||
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 14 | S 13 | S 14 | S 14 | S 13 | S 12 | SSW 13 | SSW 13 | SSW 12 | SSW 13 | SSW 13 | SSW 11 | SSW 10 | SW 16 | SW 17 | SW 17 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 |
Wave Graph | |||||||||||||||||||||
637 | 796 | 1225 | 1190 | 826 | 679 | 1192 | 1121 | 820 | 865 | 745 | 419 | 245 | 278 | 419 | 553 | 496 | 483 | 465 | 318 | 309 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-off | cross-on | cross-on | glassy | on | cross-on | glassy | on | on | cross | cross | cross-on | cross-on |
High Tide | 4:45PM2.04m | 7:40AM1.51m | 6:00PM2.14m | 8:08AM1.64m | 7:00PM2.24m | 8:36AM1.76m | 7:50PM2.29m | 9:04AM1.87m | 8:37PM2.28m | 9:32AM1.98m | 9:20PM2.20m | 10:00AM2.05m | 10:03PM2.06m | ||||||||
Low Tide | 10:00AM1.32m | 00:39AM0.30m | 11:49AM1.23m | 1:26AM0.18m | 12:55PM1.08m | 2:06AM0.11m | 1:47PM0.90m | 2:42AM0.11m | 2:33PM0.74m | 3:15AM0.17m | 3:17PM0.61m | 3:45AM0.28m | 4:00PM0.53m | 4:13AM0.43m | |||||||
6:24 | — | — | 6:26 | — | — | 6:26 | — | — | 6:26 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | |
— | 7:08 | — | — | 7:07 | — | — | 7:06 | — | — | 7:05 | — | — | 7:02 | — | — | 7:01 | — | — | 7:00 | — | |
mm | — | 1 | — | — | 1 | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — |
Temp °C | 24 | 24 | 24 | 27 | 26 | 24 | 26 | 25 | 25 | 27 | 27 | 25 | 28 | 26 | 24 | 25 | 24 | 23 | 23 | 24 | 22 |
Feels °C | 23 | 23 | 23 | 24 | 26 | 25 | 27 | 24 | 25 | 26 | 25 | 25 | 27 | 27 | 25 | 25 | 24 | 24 | 22 | 23 | 23 |
Swell 1 Height (m) Direction Period (s) | S 14 | S 13 | S 14 | S 14 | S 13 | S 12 | SSW 13 | SSW 13 | SSW 12 | SSW 13 | SSW 13 | SSW 11 | SSW 10 | SW 10 | SW 17 | SW 17 | SW 16 | SW 16 | W 7 | SW 15 | W 6 |
637 | 796 | 1225 | 1190 | 826 | 679 | 1192 | 1121 | 820 | 865 | 745 | 419 | 245 | 229 | 419 | 553 | 496 | 483 | 106 | 318 | 89 | |
Swell 2 Height (m) Direction Period (s) | SSW 16 | SW 16 | W 13 | SW 10 | SSW 15 | SSW 15 | SW 19 | SW 9 | SW 18 | SW 18 | SW 18 | W 5 | SW 16 | SW 16 | SSW 9 | SW 9 | WSW 11 | WSW 8 | SW 15 | SSW 10 | SW 15 |
512 | 628 | 14 | 15 | 439 | 604 | 59 | 3 | 50 | 80 | 81 | 16 | 214 | 278 | 101 | 141 | 200 | 86 | 465 | 20 | 309 | |
Swell 3 Height (m) Direction Period (s) | SW 12 | S 10 | SW 20 | SW 20 | W 12 | WSW 11 | SW 10 | W 11 | SW 18 | SSW 21 | SW 21 | SW 16 | SSW 13 | SSW 12 | SW 10 | S 12 | SSW 12 | SSW 11 | SSW 11 | W 18 | W 16 |
66 | 94 | 15 | 15 | 11 | 11 | 4 | 2 | 50 | 44 | 18 | 165 | 96 | 50 | 85 | 72 | 45 | 39 | 22 | 24 | 45 | |
Wind waves Height (m) Direction Period (s) | — | — | W 10 | NW 4 | W 11 | WNW 4 | WNW 5 | WNW 4 | WNW 4 | WNW 4 | WNW 4 | — | WNW 5 | — | W 3 | — | WNW 4 | WNW 4 | — | W 7 | WNW 6 |
— | — | 56 | 14 | 61 | 15 | 22 | 14 | 15 | 5 | 15 | — | 9 | — | 1 | — | 11 | 15 | — | 104 | 95 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 36 | 37 | 20 | 31 | 37 | 36 | 36 | 37 | 0 | 37 | 37 | 0 | 36 | 14 | 0 | 36 | 36 | 24 | 14 | 37 | 37 |
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.










