Surf Forecasts:
Fortress surf forecast from 28 Aug 2026:
- Best quality surf: Friday 28 Aug, 8PM (local time) - 2ft (0.6m), 8s period, SE swell with offshore winds.
- Most powerful swell: Thursday 3 Sep, 5PM (local time) - 5.5ft (1.7m), 7s period, S swell with 262 kJ wave energy.
- Next surfable swell (1★+): Friday 28 Aug, 8PM (local time) - 2ft (0.6m), 8s period with SE 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 Friday (Aug 28) at 8PM. The primary swell is predicted to be 0.6m and 8s period with a secondary swell of 0.5m and 6s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Fortress in the next 16 days are 1.7m 7s and forecast to arrive on Thursday (Sep 03) 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 1.1m 5s period and expected on Monday (Aug 31) at 2AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Fri 28th Aug) | 2ft (0.6m) 8s |
| Best Surf | 8PM (Fri 28th Aug) | 2ft (0.6m) 8s |
| Most Powerful | 5PM (Thu 3rd Sep) | 5.5ft (1.7m) 7s |
Table - best surf conditions forecast for Fortress over the next 16 days.
The Lowdown
Alright, let’s talk Fortress in feet and miles per hour. It’s been a rough stretch, I won’t lie. From Friday the 28th of August right through to Tuesday the 8th of September, you’re looking at a whole lot of nothing. Tiny waves, most under 2ft, with short periods and weak energy. The combined swell energy is mostly in the double digits, which is feeble. Wind’s all over the shop, but the swell just isn’t there. There’s a little pulse on Wednesday the 2nd of September – a 2ft SE swell with an 11-second period and energy of 121 – but it’s onshore and poor. Not worth the drive.
The tide turns from Wednesday the 9th of September. That morning we get a 3ft SSE groundswell with a very long period of 14 seconds, combined energy of 281 (moderate), and light cross-off wind from the NNW. That’s the one to circle. Clean, long-period groundswell on a reef setup – that’s what we’ve been waiting for. Water temp is about 70°, pretty average for the time of year, so no complaints there.
Thursday the 10th morning has a 3ft SSE swell at 12 seconds, still clean with cross-off wind, and energy at 387 (moderate). Another good window, but the afternoon gets wrecked by strong cross-onshore wind. Friday the 11th has a 5ft SSW swell but the period drops to 7 seconds and the wind is cross, making it marginal. Then Saturday the 12th afternoon looks promising again – a 3ft S swell with a 7-second period but light offshore wind from the WNW, so it’ll be clean, with energy at 206 (moderate). That’s a decent session if it holds.
So the long and short of it: don’t bother for the first week and a half. The real action starts Wednesday the 9th. That’s your best shot for clean, lined-up groundswell. Thursday morning is also solid. After that, it’s a bit of a gamble, but at least there’s something to look forward to.
Rusty.
Short Range ForecastLight rain (total 7mm), mostly falling on Sun night. Warm (max 25°C on Fri afternoon, min 17°C on Sat morning). Winds increasing (light winds from the SW on Sat afternoon, fresh winds from the SSW by Sun afternoon). | Days 5-7 Weather SummaryHeavy rain (total 28mm), heaviest during Thu morning. Warm (max 25°C on Mon afternoon, min 20°C on Wed afternoon). Winds increasing (light winds from the WSW on Mon afternoon, fresh winds from the S by Thu morning). | |||||||||||||||||||
Fri 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | ||||||||||||||
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 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SSW 5 | S 5 | SE 8 | SE 3 | SE 4 | SE 5 | SE 12 | SE 11 | SE 10 | SE 10 | S 6 | S 7 | S 7 |
Wave Graph  | ||||||||||||||||||||
 kJ | 53 | 51 | 31 | 31 | 24 | 18 | 18 | 30 | 13 | 16 | 9 | 14 | 31 | 51 | 75 | 251 | 58 | 185 | 262 | 142 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross | cross-off | cross-off | cross-off | on | on | on | on | on | cross-on | cross-on | cross | cross-off | cross-off |
High Tide | 8:44PM0.89m | 9:07AM0.89m | 9:17PM0.88m | 9:40AM0.92m | 9:54PM0.86m | 10:17AM0.94m | 10:34PM0.82m | 10:59AM0.94m | 11:19PM0.77m | 11:46AM0.94m | 00:10AM0.72m | 12:41PM0.91m | 1:10AM0.68m | |||||||
Low Tide | 2:14PM0.06m | 2:37AM-0.01m | 2:55PM0.05m | 3:11AM-0.02m | 3:38PM0.04m | 3:47AM-0.01m | 4:22PM0.05m | 4:26AM0.01m | 5:11PM0.09m | 5:09AM0.04m | 6:06PM0.13m | 5:59AM0.08m | 7:14PM0.16m | |||||||
 |  |  | | |  |  |  | | | |  | |  | | |  |  | |  | |
 | — | — | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — | 6:13 | — | — | 6:13 | — | — | 6:15 | — | — |
 | 7:27 | — | — | 7:24 | — | — | 7:23 | — | — | 7:22 | — | — | 7:21 | — | — | 7:19 | — | — | 7:16 | — |
mm | 1 | — | — | — | — | — | — | 6 | — | — | — | 1 | — | — | — | 1 | 7 | 19 | 4 | — |
Temp °C | 25 | 25 | 19 | 22 | 22 | 22 | 23 | 23 | 21 | 25 | 23 | 21 | 22 | 21 | 21 | 20 | 22 | 21 | 24 | 22 |
Feels °C | 25 | 26 | 16 | 19 | 18 | 21 | 20 | 21 | 21 | 24 | 23 | 19 | 19 | 17 | 18 | 17 | 18 | 17 | 25 | 20 |
Swell 1 Height (m) Direction Period (s) | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SSW 5 | S 5 | SSW 5 | SSW 5 | SSW 5 | SE 8 | SE 12 | SE 11 | SE 10 | SE 10 | SE 9 | — | S 7 |
| kJ | 53 | 51 | 31 | 31 | 24 | 18 | 18 | 30 | 13 | 7 | 2 | 2 | 3 | 51 | 75 | 79 | 58 | 29 | — | 142 |
Swell 2 Height (m) Direction Period (s) | S 6 | SSW 6 | S 7 | S 6 | S 6 | S 6 | E 5 | SE 8 | SE 8 | SE 8 | SSW 5 | SE 14 | SW 5 | — | — | SW 4 | — | — | — | — |
| kJ | 17 | 10 | 23 | 12 | 6 | 5 | 1 | 18 | 10 | 16 | 4 | 8 | 1 | — | — | 1 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | E 10 | — | E 9 | ENE 4 | E 6 | E 6 | — | — | — | SSE 8 | — | — | SE 13 | — | — | — | — | — | — | — |
| kJ | 2 | — | 2 | 2 | 3 | 1 | — | — | — | 7 | — | — | 7 | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | NNW 3 | NNE 4 | — | SW 3 | SW 3 | SSW 4 | SW 5 | — | — | SE 3 | SE 4 | SE 5 | SE 5 | SE 5 | SE 10 | SSE 4 | S 6 | S 7 | NW 3 |
| kJ | — | 3 | 5 | — | 2 | 2 | 17 | 58 | — | — | 9 | 14 | 31 | 40 | 46 | 251 | 39 | 185 | 262 | 2 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 9 | 65 | 0 | 10 | 15 | 636 | 2519 | 2 | 15 | 803 | 242 | 327 | 2546 | 641 | 54 | 824 | 578 | 365 | 2 | 38 |
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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