Surf Forecasts:
Fortress surf forecast from 2 Sep 2026:
- Best quality surf: Thursday 3 Sep, 11PM (local time) - 2.5ft (0.7m), 5s period, SSE swell with cross-offshore winds.
- Most powerful swell: Thursday 3 Sep, 2AM (local time) - 3.5ft (1.1m), 9s period, SE swell with 196 kJ wave energy.
- Next surfable swell (1★+): Thursday 3 Sep, 11PM (local time) - 2.5ft (0.7m), 5s period with SSE 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 Thursday (Sep 03) at 11PM. The primary swell is predicted to be 0.7m and 5s period with a secondary swell of 0.4m and 8s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Fortress in the next 16 days are 1.1m 9s and forecast to arrive on Thursday (Sep 03) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 5s period and expected on Tuesday (Sep 08) at 8AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Thu 3rd Sep) | 2.5ft (0.7m) 5s |
| Best Surf | 11PM (Thu 3rd Sep) | 2.5ft (0.7m) 5s |
| Most Powerful | 2AM (Thu 3rd Sep) | 3.5ft (1.1m) 9s |
Table - best surf conditions forecast for Fortress over the next 16 days.
The Lowdown
Alright, it's Rusty here. Let's talk about what's cookin' for the next couple of weeks.
First off, I gotta be straight with you – it's a rough start. We're looking at a real dry spell here. The first decent opportunity doesn't roll around until Saturday, September 12th. That's a solid ten-day gap from the start of the forecast with nothing worth paddling out for. The early days are all small, weak, and messy, with cross-shore winds and choppy conditions that just aren't doing anyone any favours.
The one spot we've got to work with is Fortress. It's a reef break, exposed to the swell, and it's pretty consistent. The water temp is sitting around 70°, which is pretty normal for this time of year, so the wetsuit choice is business as usual.
Now, for the good stuff. The standout window is the morning of Saturday, September 12th. We've got a clean 5ft swell rolling in from the east, with a moderate wave energy (201). The wind is offshore from the WNW, so the conditions are looking clean. This is the best we're going to see, and it's big enough to be fun but not so big that it's a problem for most intermediate surfers. The afternoon of the 12th bumps up a bit to 6ft from the east, with a solid jump in energy (332), but the wind shifts to a cross-offshore. Still clean, but the morning session is the pick of the bunch.
Following that, Sunday, September 13th morning is also a solid option. It's a smaller 4ft swell from the ESE, but the energy is still strong (308), and it's glassy with an offshore wind from the WNW. That's a real nice window for clean, lined-up waves.
Beyond that, it tails off again. The week after has some small, clean windows, but nothing that really gets the heart racing. The swell drops right back down, and the wind is mostly cross-off or onshore. The 17th of September has a bit of a longer period swell (13 seconds) coming from the ESE, but it's tiny at 0.7ft and the wind is a fresh cross-shore, making it lumpy. Not worth the drive.
So, to wrap it up: the early part is a total write-off. The best chance is the morning of Saturday, September 12th at Fortress, with the morning of Sunday, September 13th being a close second. Get out there for those windows, because the rest of the forecast is pretty quiet.
Rusty, signing off.
Short Range ForecastModerate rain (total 13mm), heaviest on Fri afternoon. Warm (max 26°C on Thu night, min 19°C on Wed morning). Winds increasing (calm on Fri morning, fresh winds from the NNW by Fri night). | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Sat afternoon. Warm (max 23°C on Mon afternoon, min 17°C on Sun morning). Winds decreasing (fresh winds from the NNW on Sat morning, light winds from the SSW by Sun afternoon). | ||||||||||||||||||||
Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | |||||||||||||||
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) | SE 11 | SE 10 | SE 9 | SE 9 | S 5 | SE 8 | ESE 8 | SE 8 | ESE 8 | SE 8 | SE 7 | E 6 | ENE 8 | E 9 | E 10 | E 10 | E 10 | E 10 | E 9 | SSW 6 | SSW 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 75 | 61 | 196 | 50 | 29 | 20 | 26 | 17 | 23 | 14 | 14 | 26 | 20 | 14 | 7 | 7 | 7 | 7 | 6 | 60 | 44 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | cross-off | cross | cross-off | glassy | cross-off | cross-off | cross | cross-on | cross | cross-off | cross-on | cross-on | cross-off | cross | off | off | cross-off | cross-off |
High Tide | 11:46AM0.94m | 00:10AM0.72m | 12:41PM0.91m | 1:10AM0.68m | 1:47PM0.89m | 2:24AM0.66m | 3:10PM0.89m | 3:53AM0.69m | 4:36PM0.91m | 5:11AM0.75m | 5:44PM0.94m | 6:12AM0.83m | 6:39PM0.98m | ||||||||
Low Tide | 6:06PM0.13m | 5:59AM0.08m | 7:14PM0.16m | 6:57AM0.12m | 8:42PM0.18m | 8:08AM0.14m | 10:06PM0.15m | 9:29AM0.13m | 11:08PM0.10m | 10:47AM0.09m | 11:59PM0.04m | 11:51AM0.04m | 00:44AM-0.01m | ||||||||
 |  |  |  | |  | |  | | | |  | | |  | | | | |  | | |
 | 6:13 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — | 6:18 | — | — | 6:18 | — | — | 6:20 | — | — |
 | — | 7:19 | — | — | 7:16 | — | — | 7:15 | — | — | 7:14 | — | — | 7:12 | — | — | 7:10 | — | — | 7:08 | — |
mm | — | — | — | 5 | — | 1 | — | 4 | 3 | — | 2 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 20 | 23 | 23 | 24 | 26 | 22 | 24 | 22 | 20 | 21 | 19 | 18 | 20 | 21 | 20 | 23 | 22 | 22 | 23 | 22 |
Feels °C | 17 | 18 | 23 | 24 | 24 | 27 | 21 | 24 | 23 | 17 | 18 | 15 | 17 | 19 | 18 | 18 | 20 | 18 | 19 | 21 | 19 |
Swell 1 Height (m) Direction Period (s) | SE 11 | SE 10 | SE 9 | SE 9 | SE 9 | SSE 5 | S 5 | SE 8 | SSW 6 | SE 8 | SE 7 | E 6 | ENE 8 | E 9 | SW 4 | E 10 | E 10 | E 10 | E 9 | SSW 6 | SSW 6 |
| kJ | 75 | 61 | 54 | 39 | 27 | 20 | 13 | 17 | 12 | 14 | 14 | 26 | 20 | 14 | 2 | 7 | 7 | 7 | 6 | 60 | 44 |
Swell 2 Height (m) Direction Period (s) | — | SW 4 | — | SE 9 | ESE 6 | SE 8 | ESE 8 | ESE 7 | ESE 8 | SSW 6 | SSW 6 | SSW 7 | SSW 6 | SSW 6 | E 10 | SSW 5 | SE 8 | SE 8 | SE 9 | SE 9 | SE 9 |
| kJ | — | 1 | — | 50 | 14 | 18 | 26 | 9 | 23 | 6 | 6 | 15 | 7 | 3 | 7 | 3 | 3 | 3 | 3 | 3 | 3 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | SSE 5 | E 6 | SW 5 | SSE 5 | ESE 6 | — | E 7 | ESE 8 | SE 9 | SE 9 | SE 9 | SE 9 | — | — | — | E 9 | E 8 |
| kJ | — | — | — | — | 10 | 3 | 6 | 3 | 8 | — | 4 | 6 | 3 | 3 | 3 | 3 | — | — | — | 1 | 1 |
Wind waves Height (m) Direction Period (s) | ESE 6 | ESE 5 | SE 9 | SSE 5 | S 5 | — | — | S 5 | NNW 3 | NNE 3 | ENE 5 | — | — | — | — | — | — | SW 4 | SW 5 | NW 3 | NE 3 |
| kJ | 47 | 36 | 196 | 48 | 29 | — | — | 14 | 3 | 5 | 12 | — | — | — | — | — | — | 15 | 43 | 2 | 6 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 616 | 1065 | 222 | 9 | 83 | 2 | 2 | 118 | 4 | 668 | 51 | 2 | 195 | 160 | 160 | 801 | 192 | 241 | 193 | 187 | 574 |
Best forecast wave conditions in Long Island New York | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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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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