
Surf Forecasts:
Sebastian Inlet-Third Peak surf forecast from 11 Sep 2026:
- Best quality surf: Thursday 17 Sep, 8PM (local time) - 4ft (1.2m), 8s period, ENE swell with glassy winds.
- Most powerful swell: Wednesday 16 Sep, 11PM (local time) - 5.5ft (1.7m), 7s period, ENE swell with 294 kJ wave energy.
- Next surfable swell (1★+): Thursday 17 Sep, 8PM (local time) - 4ft (1.2m), 8s period with ENE swell.
Best Forecast Surf Conditions for Sebastian Inlet-Third Peak this week:
The surf forecast for Sebastian Inlet-Third Peak over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 17) at 8PM. The primary swell is predicted to be 1.2m and 8s period with a secondary swell of 0.1m and 13s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Sebastian Inlet-Third Peak in the next 16 days are 1.7m 7s and forecast to arrive on Wednesday (Sep 16) at 11PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 4s period and expected on Sunday (Sep 13) at 8PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Thu 17th Sep) | 4ft (1.2m) 8s |
| Best Surf | 8PM (Thu 17th Sep) | 4ft (1.2m) 8s |
| Most Powerful | 11PM (Wed 16th Sep) | 5.5ft (1.7m) 7s |
Table - best surf conditions forecast for Sebastian Inlet-Third Peak over the next 16 days.
The Lowdown
Alright, let's get real about the forecast. For the next week and a half, we're in a holding pattern. Honestly, the surf is just not showing up. From the 11th through the 18th, there's nothing on the table that’s worth paddling out for. It's a long stretch of flatness, with ankle to knee-high slop and weak, short-period windswell. The winds are mostly cross or onshore, so even the tiny waves we might see will be lumpy and messy. And there's a lot of storm clouds around, so the vibe is just off.
Then, on the 16th, the swell kicks up to around 5 feet, but it's a junky, short-period windswell with a period of only 7 seconds. The wind is howling onshore from the northeast at 15-18 mph. This is not a surf day. This is a day to stay on the beach. With that much onshore wind and that kind of swell, the setup looks far more interesting for kite surfing than paddle surfing.
That pulse dies off just as fast as it came, leaving us back in a funk of tiny surf and poor conditions through the 20th and 21st. There are a couple of glassy mornings in there on the 19th and 20th, but with waves around 1-2 feet, it’s not enough to get excited about.
Now, here’s the light at the end of the tunnel. It’s a long way off, but the morning of the 22nd brings a shift. The wind turns light offshore from the south-southeast, and the swell builds to a clean 3 feet from the northeast. It’s still a bit short in period, but the energy is starting to build.
But the one I’m really circling on my calendar is the morning of Saturday the 26th. This is the standout of the whole run. The wind goes offshore from the south-southwest at 15 mph, and the swell jumps to around 4 feet from the east-northeast. The period stretches all the way out to 12 seconds, which is a real groundswell with some serious push. The energy reading hits 442, which is a hefty amount of power heading our way. This is the day to be at Sebastian Inlet-Third Peak. That offshore wind will have the faces clean, and that long-period swell will have some real grunt. It might make the waves a little more lined up and faster, so the jetty could be the spot. This is a promising long-range call, so don’t get too attached to it just yet, but it’s definitely the one that’s got me stoked.
The water temp at the start is 83.3°, which is normal for this time of year, so it’s still warm enough for a spring suit or just boardshorts.
So don't sweat the flat spell. It’s a long lull, but it’s not going to last forever. The 26th is looking like the day to clear your schedule.
Stay patient.
Short Range ForecastHeavy rain (total 23mm), heaviest during Sat afternoon. Warm (max 30°C on Sat afternoon, min 26°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 9mm), mostly falling on Tue night. Warm (max 30°C on Mon afternoon, min 27°C on Mon night). Winds increasing (calm on Tue morning, fresh winds from the NE by Wed afternoon). | |||||||||||||||||||
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) | NE 9 | ENE 6 | SE 4 | E 8 | E 8 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | ENE 4 | NE 6 | NE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 |
Wave Graph | ||||||||||||||||||||
14 | 8 | 5 | 12 | 13 | 14 | 14 | 14 | 24 | 23 | 13 | 26 | 27 | 15 | 223 | 188 | 279 | 238 | 161 | 202 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | cross | cross-off | glassy | cross-off | cross-off | glassy | cross-on | cross-off | on | on | on | on | on | on | on | cross-on | cross |
High Tide | 8:52PM0.39m | 9:21AM0.39m | 9:36PM0.35m | 10:08AM0.39m | 10:18PM0.30m | 10:55AM0.39m | 11:00PM0.25m | 11:42AM0.37m | 11:42PM0.20m | 12:31PM0.35m | 00:26AM0.15m | 1:22PM0.33m | 1:13AM0.12m | |||||||
Low Tide | 2:42PM-0.38m | 3:06AM-0.40m | 3:31PM-0.35m | 3:47AM-0.39m | 4:21PM-0.32m | 4:28AM-0.38m | 5:10PM-0.28m | 5:08AM-0.35m | 6:01PM-0.24m | 5:49AM-0.33m | 6:53PM-0.20m | 6:32AM-0.30m | 7:48PM-0.17m | |||||||
— | — | 7:05 | — | — | 7:05 | — | — | 7:05 | — | — | 7:05 | — | — | 7:07 | — | — | 7:07 | — | — | |
7:30 | — | — | 7:30 | — | — | 7:29 | — | — | 7:28 | — | — | 7:25 | — | — | 7:24 | — | — | 7:23 | — | |
mm | — | 4 | 1 | 5 | 4 | 3 | 5 | 1 | — | — | 3 | 1 | 1 | 3 | 1 | — | — | — | — | 1 |
Temp °C | 29 | 29 | 29 | 30 | 29 | 29 | 29 | 27 | 28 | 30 | 29 | 28 | 29 | 28 | 27 | 28 | 28 | 28 | 26 | 26 |
Feels °C | 30 | 32 | 34 | 33 | 32 | 35 | 34 | 29 | 31 | 33 | 31 | 32 | 31 | 29 | 26 | 25 | 25 | 27 | 25 | 28 |
Swell 1 Height (m) Direction Period (s) | NE 6 | ENE 6 | SE 4 | E 8 | E 8 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | — | E 14 | E 14 | E 14 | E 13 | ENE 8 | E 13 |
10 | 8 | 4 | 12 | 13 | 14 | 14 | 14 | 24 | 23 | 13 | 26 | 27 | — | 4 | 4 | 4 | 3 | 161 | 3 | |
Swell 2 Height (m) Direction Period (s) | NE 10 | E 8 | E 8 | ENE 5 | E 5 | E 4 | E 8 | SSE 4 | — | E 11 | E 11 | — | — | — | — | E 14 | E 14 | E 13 | E 13 | E 8 |
4 | 5 | 5 | 3 | 1 | 2 | 1 | 2 | — | 3 | 2 | — | — | — | — | 4 | 4 | 3 | 3 | 5 | |
Swell 3 Height (m) Direction Period (s) | NE 9 | NE 9 | ENE 6 | NE 8 | E 8 | SSE 4 | SSE 4 | E 4 | — | — | — | N 8 | — | E 15 | — | — | E 13 | — | E 13 | E 13 |
14 | 3 | 4 | 3 | 1 | 1 | 2 | 1 | — | — | — | 1 | — | 4 | — | — | 4 | — | 3 | 3 | |
Wind waves Height (m) Direction Period (s) | ESE 3 | SE 3 | — | SE 4 | SE 4 | — | SE 4 | — | — | — | — | — | — | ENE 4 | NE 6 | NE 7 | ENE 7 | ENE 8 | — | ENE 8 |
6 | 4 | — | 4 | 7 | — | 5 | — | — | — | — | — | — | 15 | 223 | 188 | 279 | 238 | — | 202 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 1817 | 164 | 218 | 1579 | 129 | 3 | 288 | 3 | 3 | 955 | 271 | 622 | 622 | 1329 | 1140 | 622 | 517 | 450 | 20 | 1 |
Best forecast wave conditions in North Florida | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
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Information about the Sebastian Inlet-Third Peak Surf forecast
The above surf forecast table for Sebastian Inlet-Third Peak provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Sebastian Inlet-Third Peak can be found by selecting the local surf guide option on the grey menu. Our Sebastian Inlet-Third Peak 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 (Sebastian Inlet-Third Peak) 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 Sebastian Inlet-Third Peak 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.
Sebastian Inlet-Third Peak is 6 km (4 miles) from the city of Sebastian. If you plan a vacation in North Florida, look for hotels and other accommodation in Sebastian. Sebastian has rooms for a wide range of budgets as well as car hire and transport links.










