Surf Forecasts:
Fortress surf forecast from 12 Aug 2026:
- Best quality surf: Monday 17 Aug, 5AM (local time) - 3.5ft (1.1m), 6s period, S swell with offshore winds.
- Most powerful swell: Wednesday 19 Aug, 2AM (local time) - 2.5ft (0.7m), 13s period, SE swell with 162 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 5AM (local time) - 3.5ft (1.1m), 6s period with S swell.
Best Forecast Surf Conditions for Fortress this week:
The surf forecast for Fortress over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 17) at 5AM. The primary swell is predicted to be 1.1m and 6s period with a secondary swell of 0.2m and 8s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Fortress in the next 16 days are 0.7m 13s and forecast to arrive on Wednesday (Aug 19) at 2AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 6s period and expected on Monday (Aug 17) at 5AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Mon 17th Aug) | 3.5ft (1.1m) 6s |
| Best Surf | 5AM (Mon 17th Aug) | 3.5ft (1.1m) 6s |
| Most Powerful | 2AM (Wed 19th Aug) | 2.5ft (0.7m) 13s |
Table - best surf conditions forecast for Fortress over the next 16 days.
The Lowdown
Alright, this is Rusty. Let's be straight with you: the next couple of weeks are looking pretty bleak for a wave. We've only got one spot on the radar, Fortress, and honestly, it's not offering much for the paddler.
Looking at the whole 16-day window, the first solid recommendation isn't for a good session—it's just the first time the waves are even surfable, and that's not until Monday the 17th. Even then, it's a struggle. Up until that point, we're looking at a real dry spell. From the 12th through to the morning of the 17th, it's all "poor surf conditions" with tiny, weak swell. You'll see a bit of energy bump up around Saturday the 22nd, with the combined swell energy hitting 195 to 196, but that's still in the "poor surf conditions" category, so don't get your hopes up.
Let's talk about Fortress (reef). It's a beginner-friendly reef break that's fairly consistent and picks up swell from the SE. On the morning of Monday the 17th, we see a tiny pulse of 3ft from the south with a short period of 6 seconds and a combined energy of 72. Not great. But by the afternoon, we get a light offshore wind from the west. That's the highlight, if you can call it that. You'll have clean 3ft waves, but the comment is "surfable waves but very ordinary conditions". It’s really only for the patient beginner wanting to practice.
Then we skip forward again. The next tiny flicker of life comes on Tuesday the 25th, with a morning session showing 3ft from the ESE, clean conditions, but again, just "surfable". The following day, Wednesday the 26th, we get an afternoon pulse of 4ft from the east with a combined energy of 233—the biggest energy in the chart. But with a period of 7 seconds, it's short and weak, and still only a "marginal" call.
Honestly, for this stretch, with such weak swell and mostly poor quality, combined with the fact that Fortress is a reef setup, it's not a good look at all for paddle surfing. The conditions are more suited to a kite if you've got the gear and the itch.
Rusty.
Short Range ForecastLight rain (total 5mm), mostly falling on Wed night. Warm (max 28°C on Wed afternoon, min 19°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 8mm), mostly falling on Sun night. Warm (max 28°C on Mon afternoon, min 19°C on Sat morning). Winds increasing (light winds from the NNW on Sat morning, strong winds from the SSW by Sun night). | ||||||||||||||||||||
Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | |||||||||||||||
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) | SSW 5 | SSW 5 | SE 14 | SE 14 | S 5 | SSW 5 | ESE 9 | S 5 | SSW 5 | S 6 | S 6 | S 6 | S 6 | S 4 | S 5 | S 6 | S 7 | S 7 | SSE 7 | SSE 6 | SE 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 9 | 9 | 8 | 8 | 13 | 9 | 9 | 15 | 5 | 6 | 6 | 7 | 18 | 28 | 71 | 62 | 71 | 61 | 45 | 32 | 162 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | cross | cross-off | cross | cross-off | cross | cross | cross-off | cross-off | off | cross-on | cross-on | cross-on | cross |
High Tide | 8:09AM0.92m | 8:30PM1.05m | 8:57AM0.98m | 9:15PM1.02m | 9:42AM1.00m | 9:57PM0.97m | 10:26AM1.00m | 10:37PM0.90m | 11:09AM0.98m | 11:13PM0.82m | 11:52AM0.93m | 11:48PM0.74m | 12:35PM0.87m | 00:23AM0.67m | |||||||
Low Tide | 1:44PM-0.07m | 2:30AM-0.10m | 2:34PM-0.08m | 3:10AM-0.09m | 3:22PM-0.05m | 3:46AM-0.07m | 4:08PM-0.01m | 4:21AM-0.02m | 4:53PM0.05m | 4:55AM0.03m | 5:39PM0.12m | 5:30AM0.09m | 6:28PM0.20m | ||||||||
 | |  |  | |  | | | | |  | | |  | | | | | | | | |
 | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — | 6:00 | — | — |
 | — | 7:51 | — | — | 7:49 | — | — | 7:47 | — | — | 7:46 | — | — | 7:45 | — | — | 7:44 | — | — | 7:42 | — |
mm | — | — | 2 | 2 | — | — | — | — | 1 | — | — | — | — | — | 8 | — | — | — | — | — | — |
Temp °C | 23 | 28 | 26 | 22 | 27 | 27 | 23 | 26 | 26 | 20 | 22 | 22 | 23 | 24 | 24 | 25 | 28 | 27 | 21 | 23 | 23 |
Feels °C | 22 | 25 | 24 | 22 | 24 | 24 | 21 | 22 | 25 | 19 | 20 | 19 | 20 | 20 | 20 | 25 | 26 | 24 | 21 | 22 | 22 |
Swell 1 Height (m) Direction Period (s) | SSW 5 | ESE 8 | SE 8 | SE 8 | S 5 | SSW 5 | S 5 | ESE 9 | SSW 5 | S 6 | S 6 | S 6 | SE 9 | SE 8 | SSE 8 | S 6 | S 7 | S 7 | SSE 7 | SSE 6 | SE 13 |
| kJ | 9 | 7 | 3 | 3 | 13 | 9 | 5 | 8 | 5 | 6 | 6 | 7 | 3 | 3 | 7 | 62 | 71 | 61 | 45 | 32 | 162 |
Swell 2 Height (m) Direction Period (s) | SE 8 | E 14 | SE 11 | SE 14 | SE 8 | ESE 9 | ESE 9 | E 13 | SE 9 | SE 9 | SE 9 | SE 9 | — | — | — | SE 8 | — | SE 8 | ENE 4 | E 4 | SE 10 |
| kJ | 3 | 4 | 5 | 8 | 3 | 8 | 9 | 3 | 3 | 3 | 3 | 3 | — | — | — | 10 | — | 18 | 3 | 1 | 16 |
Swell 3 Height (m) Direction Period (s) | E 15 | — | SE 14 | SE 10 | SE 13 | SE 13 | SSW 5 | SE 13 | E 12 | E 12 | — | — | — | — | — | — | — | — | SE 15 | SE 14 | SE 13 |
| kJ | 4 | — | 8 | 4 | 7 | 7 | 3 | 7 | 3 | 3 | — | — | — | — | — | — | — | — | 8 | 7 | 25 |
Wind waves Height (m) Direction Period (s) | — | SSW 5 | SSW 4 | SSW 5 | W 2 | NW 3 | — | S 5 | N 3 | NNE 3 | — | SW 2 | S 6 | S 4 | S 5 | — | WSW 2 | NE 3 | N 3 | — | SSW 3 |
| kJ | — | 9 | 16 | 21 | 1 | 6 | — | 15 | 7 | 5 | — | 1 | 18 | 28 | 71 | — | 1 | 6 | 1 | — | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2383 | 1100 | 676 | 68 | 2367 | 2363 | 675 | 3406 | 722 | 815 | 803 | 1466 | 1511 | 1675 | 183 | 2 | 0 | 32 | 51 | 668 | 9 |
Best forecast wave conditions in Long Island New York | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Fortress surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Fortress Surf forecast
The above surf forecast table for Fortress provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Fortress can be found by selecting the local surf guide option on the grey menu. Our Fortress 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 (Fortress) 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 Fortress 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.
Fortress is 39 km (24 miles) from New London. If you plan a vacation in Long Island New York, look for hotels and other accommodation in New London. New London has rooms for a wide range of budgets as well as car hire and transport links.
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