
Surf Forecasts:
Sebastian Inlet-Third Peak surf forecast from 16 Sep 2026:
- Best quality surf: Saturday 19 Sep, 5AM (local time) - 3ft (0.9m), 7s period, ENE swell with cross-offshore winds.
- Most powerful swell: Thursday 17 Sep, 11AM (local time) - 5ft (1.6m), 8s period, ENE swell with 277 kJ wave energy.
- Next surfable swell (1★+): Saturday 19 Sep, 5AM (local time) - 3ft (0.9m), 7s 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 Saturday (Sep 19) at 5AM. The primary swell is predicted to be 0.9m and 7s period with a secondary swell of 0.1m and 12s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Sebastian Inlet-Third Peak in the next 16 days are 1.6m 8s and forecast to arrive on Thursday (Sep 17) at 11AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 4s period and expected on Saturday (Sep 19) at 5AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Sat 19th Sep) | 3ft (0.9m) 7s |
| Best Surf | 5AM (Sat 19th Sep) | 3ft (0.9m) 7s |
| Most Powerful | 11AM (Thu 17th Sep) | 5ft (1.6m) 8s |
Table - best surf conditions forecast for Sebastian Inlet-Third Peak over the next 16 days.
The Lowdown
Alright, let’s get into it. We’ve got a bit of a rough stretch here at Sebastian Inlet-Third Peak to start, and honestly, there’s nothing really worth paddling out for in the next week. We’re looking at a lot of junky, short-period wind swell out of the east-northeast, and the wind isn’t doing us any favors. It’s mostly onshore or cross-onshore, and the wave heights are just too inconsistent and weak to get excited about. There’s some serious energy coming later on, but we’ve gotta pay our dues first.
Starting off from Wednesday the 16th through to about Monday the 21st, it’s grim. Swell heights are mostly under a metre and a half, the period’s sitting down around 6 to 8 seconds, and the energy is weak—you’re looking at values like 112, 231, or even down to 20 and 29 (all in the weak range). Wind is onshore or cross-onshore, and there’s even a risk of thunderstorms. Surf quality is just poor. It’s not even worth looking at, to be honest.
Then we go into a bit of a dead zone from Tuesday the 22nd through Saturday the 26th. The swell tries to pick up a little—heights nudge up to 1.6m or 1.7m—but the period is still short, 6 to 7 seconds, and the wind stays cross-onshore. That’s just chop. There’s a bit more energy on the 24th (267 on the morning, 275 on the afternoon) but it’s still poor-quality surf. You’d be fighting it the whole time.
Now, here’s where it gets interesting. Sunday the 27th through Monday the 28th, we get a solid pulse of swell. The energy jumps way up—605 on Sunday morning, then 2251 on Monday morning and 3055 on Monday afternoon. That’s strong, powerful stuff, but it’s mostly cross-onshore and choppy. Wave heights are pushing 3.5m to 4.0m on Monday. That’s way too big for this break, and the wind is going to mess it up. This is definitely not beginner territory—over 2.5m and you need to be an expert. Even then, with the chop, it’s not going to be clean.
Tuesday the 29th, the swell is still big—3.0m to 3.5m—but the period has stretched out to 11 seconds, so there’s more power behind it. Still, it’s cross-onshore and choppy, and the forecast is saying it’s too big for this break. Not the one.
Then we roll into Wednesday the 30th and Thursday the 1st of October. The swell drops back to 2.0m to 2.1m, still with that 11-second period, but the wind is still cross-onshore or light cross-onshore. Early Thursday morning, though, the wind goes glassy. That’s our window. The energy is still solid—1049 on Wednesday morning, 921 on Wednesday afternoon, and 457 on Thursday morning—but it’s not crazy. Swell direction is east-northeast, which is what we want. It’s a long-period groundswell, which can be a bit tricky at a beach/jetty setup like this—might break a bit straight—but with the glass, it’ll at least be clean. This is the standout of the whole run. Still, it’s not perfect, and it’s a long way out, so treat it as promising but not a lock.
All in all, if you really want to surf, wait for Thursday the 1st. It’s the only time the wind and the swell line up. Everything before that is a grind.
Alright, that’s the look. Stay patient.
Rusty.
Short Range ForecastHeavy rain (total 23mm), heaviest during Fri morning. Warm (max 28°C on Tue night, min 27°C on Tue night). Mainly fresh winds. | Days 5-7 Weather SummaryLight rain (total 8mm), mostly falling on Sat night. Warm (max 29°C on Sat afternoon, min 27°C on Fri night). Wind will be generally light. | ||||||||||||||||||
Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | ||||||||||||||
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) | E 9 | ENE 6 | ENE 7 | ENE 6 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | E 6 | E 7 | ENE 7 | E 4 | E 8 | E 7 | ENE 8 |
Wave Graph | |||||||||||||||||||
27 | 104 | 202 | 145 | 277 | 204 | 183 | 142 | 88 | 72 | 41 | 35 | 28 | 51 | 20 | 9 | 10 | 10 | 24 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | cross-on | on | on | cross-on | cross | cross | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross | cross | cross-on | cross |
High Tide | 11:42PM0.20m | 12:31PM0.35m | 00:26AM0.15m | 1:22PM0.33m | 1:13AM0.12m | 2:14PM0.31m | 2:06AM0.10m | 3:08PM0.30m | 3:04AM0.09m | 4:00PM0.29m | 4:02AM0.11m | 4:49PM0.29m | 4:58AM0.14m | ||||||
Low Tide | 5:49AM-0.33m | 6:53PM-0.20m | 6:32AM-0.30m | 7:48PM-0.17m | 7:18AM-0.27m | 8:45PM-0.15m | 8:10AM-0.26m | 9:41PM-0.15m | 9:06AM-0.24m | 10:32PM-0.16m | 10:03AM-0.24m | 11:17PM-0.19m | |||||||
— | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:09 | — | — | 7:09 | — | — | |
7:25 | — | 7:24 | — | — | 7:23 | — | — | 7:22 | — | — | 7:22 | — | — | 7:21 | — | — | 7:19 | — | |
mm | 6 | 4 | 3 | 1 | — | — | 2 | 5 | 2 | 1 | — | 1 | 3 | 2 | — | — | — | 1 | 9 |
Temp °C | 28 | 28 | 28 | 28 | 27 | 28 | 27 | 28 | 28 | 28 | 28 | 29 | 28 | 28 | 29 | 28 | 28 | 29 | 28 |
Feels °C | 29 | 28 | 27 | 27 | 26 | 27 | 27 | 30 | 29 | 30 | 31 | 31 | 29 | 30 | 31 | 30 | 31 | 32 | 30 |
Swell 1 Height (m) Direction Period (s) | E 9 | E 14 | E 9 | E 14 | E 13 | E 13 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | — | ENE 7 | ENE 7 | E 8 | E 7 | ENE 8 |
27 | 4 | 25 | 4 | 3 | 3 | 183 | 142 | 88 | 72 | 41 | 35 | 11 | — | 20 | 4 | 10 | 10 | 24 | |
Swell 2 Height (m) Direction Period (s) | E 15 | E 14 | E 14 | — | — | — | E 13 | E 12 | E 12 | E 12 | SSE 4 | E 12 | E 11 | E 6 | E 4 | E 8 | NE 6 | NE 6 | E 9 |
4 | 4 | 4 | — | — | — | 3 | 3 | 3 | 3 | 1 | 3 | 2 | 3 | 3 | 5 | 2 | 2 | 2 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | E 9 | — | E 8 | E 12 | ESE 7 | E 9 | ESE 9 | SSE 4 | E 7 | NE 7 | SSE 4 | E 9 |
— | — | — | — | — | — | — | 2 | — | 1 | 3 | 5 | 2 | 7 | 1 | 1 | 7 | 1 | 6 | |
Wind waves Height (m) Direction Period (s) | ENE 4 | ENE 6 | ENE 7 | ENE 6 | ENE 8 | ENE 8 | — | — | — | — | SE 4 | SSE 4 | E 6 | E 7 | ENE 4 | E 4 | E 4 | E 4 | E 4 |
24 | 104 | 202 | 145 | 277 | 204 | — | — | — | — | 4 | 1 | 28 | 51 | 6 | 9 | 7 | 8 | 11 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 702 | 841 | 1583 | 709 | 709 | 1583 | 450 | 1167 | 352 | 955 | 38 | 1344 | 218 | 464 | 464 | 192 | 218 | 942 | 288 |
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.










