Surf Forecasts:
15th Street surf forecast from 13 Sep 2026:
- Best quality surf: Wednesday 16 Sep, 8AM (local time) - 3ft (0.9m), 17s period, SSW swell with glassy winds.
- Most powerful swell: Wednesday 16 Sep, 8AM (local time) - 3ft (0.9m), 17s period, SSW swell with 475 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 2AM (local time) - 2ft (0.6m), 14s 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 Sunday (Sep 13) at 2AM. The primary swell is predicted to be 0.6m and 14s period with a secondary swell of 0.6m and 5s. 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 8AM. 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 (Sun 13th Sep) | 2ft (0.6m) 14s |
| Best Surf | 8AM (Wed 16th Sep) | 3ft (0.9m) 17s |
| Most Powerful | 8AM (Wed 16th Sep) | 3ft (0.9m) 17s |
Table - best surf conditions forecast for 15th Street over the next 16 days.
The Lowdown
Alright, Rusty here again. Let’s break down 15th Street over the next couple of weeks.
To be honest, it’s a slow start. The first several days are small, weak, and choppy with cross-onshore winds making a mess of things. There’s a lot of nothing happening until we get to Wednesday 16th September.
That Wednesday morning is your best bet. The wind is light offshore from the WSW at 6 mph, which is clean, and there’s a small 0.9ft SSW groundswell with a 17-second period. That long period gives the waves some shape and energy (combined energy of 522), but with the beach and reef setup, that long period can make things a bit straight. Still, it’s the cleanest you’ll see.
The mornings following that stay offshore, but the swell just doesn’t get any size. The combined energy climbs into the 500–600 range around Friday 18th September and into the next week, which means there’s moderate energy, but the wave height barely breaks 3ft and the period stays long. Afternoons are mostly cross-onshore, so the window is small.
From Monday 21st September, the swell holds around 3ft to 3ft from the SW with some energy behind it (combined energy over 600 on the 21st), but the wind is mostly cross-onshore or light offshore. It’s rideable but nothing special.
The water is running at 74°F, which is about 6° warmer than usual—very unusual for this time of year.
There’s a long gap of poor surf from the start until the 16th, and even then it’s marginal. After the 23rd, things drop back into poor conditions with very little to work with. Not a total washout, but you’ll need to pick your moments carefully.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Sat afternoon, min 20°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 23°C on Fri morning, min 19°C on Tue night). Wind will be generally light. | |||||||||||||||||||
Sat 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | ||||||||||||||
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 14 | SW 14 | SW 13 | SW 19 | W 9 | W 8 | SW 18 | SW 17 | SW 16 | S 20 | SW 16 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SW 19 | SW 19 | SW 19 |
Wave Graph  | ||||||||||||||||||||
 kJ | 208 | 158 | 144 | 130 | 246 | 190 | 192 | 188 | 163 | 194 | 157 | 475 | 302 | 366 | 196 | 246 | 242 | 303 | 303 | 234 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | glassy | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | glassy | on | on | cross-on | on | cross-on | cross-on | on | cross-on | glassy |
High Tide | 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 | 2:34PM1.72m | |||||||||
Low Tide | 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 | 11:35PM0.67m | ||||||||
 |  |  | |  | | | | | | | | | | | | | | | | |
 | — | — | 6:31 | — | — | 6:31 | — | — | 6:31 | — | — | 6:33 | — | — | 6:33 | — | — | 6:33 | — | — |
 | 6:59 | — | — | 6:58 | — | — | 6:57 | — | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — | — | 6:51 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 22 | 23 | 23 | 21 | 23 | 23 | 21 | 22 | 22 | 20 | 21 | 22 | 20 | 22 | 22 | 21 | 23 | 23 | 22 |
Feels °C | 23 | 24 | 23 | 23 | 23 | 22 | 22 | 22 | 22 | 21 | 21 | 21 | 22 | 21 | 22 | 21 | 22 | 23 | 22 | 23 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 14 | W 7 | W 7 | W 9 | W 8 | W 10 | W 9 | W 9 | W 9 | W 8 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SW 19 | SW 19 | W 6 |
| kJ | 208 | 158 | 72 | 77 | 246 | 190 | 183 | 99 | 99 | 74 | 51 | 475 | 302 | 366 | 196 | 246 | 242 | 303 | 303 | 44 |
Swell 2 Height (m) Direction Period (s) | W 6 | W 5 | SW 13 | SW 13 | SW 13 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | W 6 | W 6 | SSW 12 | S 12 | S 12 | S 11 | SSW 14 | SSW 13 | SSW 13 |
| kJ | 24 | 20 | 144 | 87 | 85 | 108 | 192 | 188 | 163 | 157 | 157 | 19 | 10 | 50 | 71 | 95 | 56 | 160 | 141 | 139 |
Swell 3 Height (m) Direction Period (s) | S 9 | S 9 | S 8 | SW 19 | SW 19 | SW 13 | SW 12 | SW 12 | SW 12 | S 20 | SSW 18 | S 9 | S 9 | S 9 | SW 21 | SW 21 | SW 21 | S 11 | S 10 | SW 19 |
| kJ | 28 | 23 | 12 | 130 | 127 | 84 | 38 | 38 | 37 | 194 | 110 | 28 | 27 | 27 | 160 | 160 | 212 | 58 | 33 | 234 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 6 | W 3 | W 4 | W 5 | W 5 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 10 | 5 | 9 | 11 | 24 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 37 | 0 | 37 | 37 | 14 | 119 | 137 | 14 | 16 | 37 | 0 | 37 | 36 | 9 | 36 | 37 | 20 | 36 | 37 | 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.
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