Surf Forecasts:
Sebastian Inlet-Third Peak surf forecast from 17 Aug 2026:
- Most powerful swell: Saturday 22 Aug, 5PM (local time) - 2.5ft (0.7m), 9s period, ESE swell with 73 kJ wave energy.
Best Forecast Surf Conditions for Sebastian Inlet-Third Peak this week:
The most powerful waves expected at Sebastian Inlet-Third Peak in the next 16 days are 0.7m 9s and forecast to arrive on Saturday (Aug 22) at 5PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Sunday (Aug 23) at 11PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5PM (Sat 22nd Aug) | 2.5ft (0.7m) 9s |
Table - best surf conditions forecast for Sebastian Inlet-Third Peak over the next 16 days.
The Lowdown
Alright, Rusty here, looking at the forecast for the next couple of weeks.
Honestly, I’ve got to be straight with you. For the next week and a half, it’s looking pretty grim. We’re in a real flat spell, and there’s next to nothing on offer. You’ll be looking at a solid 9-day gap where the waves are just too small to paddle for. The swell is a weak little 1 ft to 2 ft from the east or southeast, with combined energies barely cracking 20 or 30 (weak energy). It’s a real bummer, but that’s how it goes sometimes.
The first real glimmer of hope shows up on the morning of Wednesday, August 26th. The swell is still tiny at 1 ft from the ESE, but the wind goes glassy and calm. The combined energy is a weak 42, but it’s the cleanest we’ve seen. It’s still pretty ordinary, but it’s the first day you could actually get wet.
Things start to get a little more interesting towards the very end of the forecast. The mornings of Thursday, August 27th and Friday, August 28th are looking like the best bets. On Thursday morning, we’ll see a 2 ft swell from the east with a solid 13-second period, and combined energy climbing to 131 (moderate). The wind is light and cross-off from the WSW, keeping it clean. That’s a real groundswell pulse, which means better energy but longer gaps between sets. At Sebastian Inlet-Third Peak (Florida), that kind of longer period swell can offer up some nice shape. Friday morning is similar, with a 2 ft E swell, 11-second period, and a cross-off westerly, with energy at 198 (moderate). The water is sitting at a warm 84°, which is about average for this time of year.
If you’re patient, those two mornings late in the month are your best shot. For the rest of it, it’s a waiting game. The forecast is less certain that far out, but it’s looking promising. Don’t hold your breath for the afternoons, though – the seabreezes swing onshore and chop things up.
Stay tuned, and I’ll let you know if anything changes.
Rusty.
Short Range ForecastModerate rain (total 14mm), heaviest on Tue night. Warm (max 33°C on Mon afternoon, min 25°C on Tue night). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Thu night. Warm (max 32°C on Fri afternoon, min 25°C on Sat morning). Wind will be generally light. | ||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | |||||||||||||||
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) | E 8 | E 8 | E 8 | E 8 | E 11 | E 10 | E 9 | E 9 | E 9 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 9 | ESE 9 | E 9 | E 8 | E 12 | E 12 |
Wave Graph | |||||||||||||||||||||
10 | 11 | 12 | 12 | 20 | 17 | 16 | 15 | 14 | 13 | 12 | 12 | 12 | 12 | 13 | 15 | 73 | 14 | 12 | 12 | 12 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross | off | cross-off | cross-on | cross-off | off | cross-off | off | off | cross-off | cross-off | off | cross | cross-off |
High Tide | 12:08PM0.35m | 00:15AM0.23m | 1:01PM0.33m | 1:04AM0.18m | 1:57PM0.32m | 1:56AM0.13m | 2:55PM0.31m | 2:52AM0.11m | 3:52PM0.31m | 3:50AM0.09m | 4:45PM0.31m | 4:45AM0.10m | 5:33PM0.32m | ||||||||
Low Tide | 6:22PM-0.26m | 6:26AM-0.32m | 7:20PM-0.21m | 7:13AM-0.30m | 8:23PM-0.18m | 8:03AM-0.27m | 9:26PM-0.16m | 8:56AM-0.26m | 10:27PM-0.16m | 9:50AM-0.26m | 11:19PM-0.17m | 10:43AM-0.26m | 00:03AM-0.19m | ||||||||
6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — | 6:54 | — | — | 6:54 | — | — | |
— | 7:58 | — | — | 7:57 | — | — | 7:55 | — | — | 7:54 | — | — | 7:53 | — | — | 7:52 | — | — | 7:52 | — | |
mm | — | — | — | — | — | 10 | — | — | 4 | — | — | 1 | — | — | — | — | — | 1 | — | — | — |
Temp °C | 30 | 33 | 32 | 30 | 33 | 26 | 30 | 32 | 31 | 29 | 31 | 29 | 29 | 32 | 29 | 28 | 32 | 29 | 28 | 31 | 29 |
Feels °C | 34 | 36 | 34 | 33 | 37 | 29 | 34 | 36 | 35 | 33 | 34 | 31 | 31 | 34 | 30 | 29 | 32 | 31 | 31 | 33 | 30 |
Swell 1 Height (m) Direction Period (s) | E 8 | E 8 | SSE 3 | E 8 | E 11 | N 4 | E 9 | E 9 | E 9 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 9 | E 9 | E 9 | SE 4 | E 8 | E 8 |
10 | 11 | 1 | 12 | 20 | 5 | 16 | 15 | 14 | 13 | 12 | 12 | 12 | 12 | 13 | 15 | 13 | 14 | 5 | 12 | 12 | |
Swell 2 Height (m) Direction Period (s) | SSE 3 | E 9 | E 8 | SE 4 | NE 6 | E 10 | ENE 6 | ENE 6 | NE 6 | — | NE 5 | NE 8 | — | E 15 | E 14 | E 14 | ENE 10 | E 13 | E 8 | E 12 | E 12 |
1 | 2 | 12 | 1 | 1 | 17 | 4 | 3 | 1 | — | 1 | 2 | — | 4 | 4 | 4 | 9 | 3 | 12 | 3 | 3 | |
Swell 3 Height (m) Direction Period (s) | NE 10 | NE 9 | E 9 | E 11 | — | — | — | — | — | NE 6 | — | — | E 15 | E 15 | E 14 | E 13 | E 13 | E 13 | E 12 | E 12 | E 12 |
4 | 3 | 2 | 2 | — | — | — | — | — | 1 | — | — | 4 | 4 | 4 | 4 | 14 | 13 | 3 | 11 | 11 | |
Wind waves Height (m) Direction Period (s) | — | SSE 4 | — | NW 3 | — | — | — | — | SSE 3 | — | SE 2 | SSE 4 | SSE 4 | SE 2 | SSE 4 | SSE 4 | ESE 9 | SE 4 | — | SE 4 | SE 4 |
— | 1 | — | 1 | — | — | — | — | 1 | — | 1 | 10 | 6 | 2 | 13 | 5 | 73 | 16 | — | 6 | 19 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 352 | 352 | 352 | 129 | 29 | 129 | 218 | 375 | 482 | 482 | 375 | 955 | 464 | 143 | 4 | 352 | 24 | 25 | 218 | 192 | 3 |
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.











