Surf Forecasts:
Fortress surf forecast from 1 Sep 2026:
- Best quality surf: Thursday 3 Sep, 11AM (local time) - 3ft (0.9m), 6s period, SE swell with cross-offshore winds.
- Most powerful swell: Tuesday 1 Sep, 11PM (local time) - 5ft (1.5m), 6s period, ESE swell with 161 kJ wave energy.
- Next surfable swell (1★+): Thursday 3 Sep, 11AM (local time) - 3ft (0.9m), 6s 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 Thursday (Sep 03) at 11AM. The primary swell is predicted to be 0.9m and 6s period with a secondary swell of 0.4m and 9s. 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 1.5m 6s and forecast to arrive on Tuesday (Sep 01) at 11PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 5s period and expected on Thursday (Sep 03) at 11PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Thu 3rd Sep) | 3ft (0.9m) 6s |
| Best Surf | 11AM (Thu 3rd Sep) | 3ft (0.9m) 6s |
| Most Powerful | 11PM (Tue 1st Sep) | 5ft (1.5m) 6s |
Table - best surf conditions forecast for Fortress over the next 16 days.
The Lowdown
Alright, surfers, Rusty here. Let’s talk about the outlook for Fortress (reef). Honestly, it’s a rough stretch ahead. The next couple of weeks are looking pretty grim for decent waves. There’s a long gap of poor conditions right at the start, so don’t bother waxing up just yet.
From Monday the 31st of August, right through to the end of the first week of September, we’re looking at a string of flat, weak, and messy days. The water’s sitting at 71°, which is about average for this time of year. The first bit of energy that could be worth a look doesn’t show until Sunday the 13th of September. A new SSW swell pushes in with some size, around 6 ft to 7 ft, but it’s short-period stuff at 7 seconds, making it pretty lumpy. The combined wave energy will be moderate, hitting around 352 to 382, but the wind is cross-shore, so it’s going to be a bit of a battle. It’s a marginal call, best for those who are comfortable in bumpy conditions.
Monday the 14th of September looks a little cleaner. The swell drops to 4 ft from the S, and the wind shifts offshore from the WNW, giving us clean, glassy faces. The wave energy is still moderate at 187, but it’s a real improvement. This is the standout session of the whole forecast. The S direction is not ideal for the optimum SE swell direction, but the offshore wind makes it workable. For a reef break, that clean surface is gold.
After that, it fades fast. Tuesday the 15th of September sees the wind turning onshore again, and the swell drops away to almost nothing, so don’t expect much.
All in all, if you’re itching to get wet, circle Monday the 14th of September on your calendar. The rest of the window is a write-off, but that one morning could offer a few clean, albeit small, waves for the dedicated surfer.
Rusty.
Short Range ForecastHeavy rain (total 27mm), heaviest during Tue morning. Warm (max 23°C on Thu morning, min 19°C on Tue night). Mainly strong winds. | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Thu afternoon. Warm (max 27°C on Fri afternoon, min 16°C on Sun morning). Winds increasing (light winds from the S on Sat afternoon, fresh winds from the NNE by Sun morning). | |||||||||||||||||||
Mon 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | ||||||||||||||
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 7 | SE 7 | ESE 5 | ESE 6 | ESE 6 | ESE 7 | SE 7 | SE 6 | SE 9 | SE 8 | ESE 7 | ESE 7 | S 6 | ESE 7 | SE 7 | SSE 9 | NE 4 | ENE 5 | E 10 |
Wave Graph  | ||||||||||||||||||||
 kJ | 10 | 14 | 12 | 44 | 142 | 127 | 134 | 103 | 64 | 38 | 64 | 26 | 15 | 19 | 21 | 14 | 8 | 6 | 7 | 16 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-off | on | cross-on | on | cross-on | on | cross-off | cross-off | off | off | off | cross-off | cross | cross-on | cross-off | cross | cross | cross |
High Tide | 10:34PM0.82m | 10:59AM0.94m | 11:19PM0.77m | 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 | ||||||||
Low Tide | 4:22PM0.05m | 4:26AM0.01m | 5:11PM0.09m | 5:09AM0.04m | 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 | |||||||
 |  |  |  |  |  | |  | |  | | | |  | |  | | | | | |
 | — | — | 6:13 | — | — | 6:13 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — | 6:18 | — | — |
 | 7:22 | — | — | 7:21 | — | — | 7:19 | — | — | 7:16 | — | — | 7:15 | — | — | 7:14 | — | — | 7:12 | — |
mm | — | 7 | 11 | 2 | 2 | — | — | — | 5 | 2 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 21 | 21 | 22 | 19 | 20 | 20 | 22 | 23 | 24 | 25 | 23 | 27 | 26 | 20 | 22 | 20 | 18 | 19 | 16 |
Feels °C | 20 | 20 | 20 | 25 | 14 | 17 | 17 | 24 | 25 | 25 | 27 | 23 | 26 | 23 | 18 | 21 | 15 | 12 | 12 | 9 |
Swell 1 Height (m) Direction Period (s) | SE 8 | SE 7 | SE 7 | SE 13 | SE 12 | SE 11 | SE 10 | SE 9 | SE 6 | SE 6 | SE 8 | ESE 7 | ESE 7 | S 6 | ESE 7 | SE 7 | ENE 4 | SE 9 | ENE 5 | E 10 |
| kJ | 10 | 14 | 12 | 7 | 51 | 75 | 49 | 54 | 64 | 29 | 64 | 26 | 15 | 19 | 21 | 14 | 4 | 3 | 7 | 16 |
Swell 2 Height (m) Direction Period (s) | SSW 5 | ESE 3 | SE 14 | SE 10 | — | SSW 5 | SSW 5 | SW 5 | SE 9 | SE 9 | SSW 5 | SE 8 | SE 8 | ESE 6 | SSW 6 | SSW 6 | E 7 | E 9 | E 9 | WSW 3 |
| kJ | 4 | 2 | 8 | 4 | — | 2 | 2 | 1 | 28 | 38 | 8 | 11 | 10 | 8 | 7 | 3 | 4 | 6 | 6 | 1 |
Swell 3 Height (m) Direction Period (s) | ENE 3 | — | S 10 | SE 13 | — | — | — | SW 5 | — | — | — | SSW 4 | S 5 | SE 8 | — | E 8 | SSE 9 | E 7 | SE 9 | SE 9 |
| kJ | 2 | — | 2 | 7 | — | — | — | 1 | — | — | — | 4 | 5 | 10 | — | 5 | 8 | 4 | 3 | 3 |
Wind waves Height (m) Direction Period (s) | E 3 | SSE 3 | SSE 3 | ESE 5 | ESE 6 | ESE 6 | ESE 7 | SE 7 | SSW 5 | SSW 4 | — | NNW 3 | W 2 | NNW 2 | NNE 3 | E 4 | — | NE 4 | — | WSW 3 |
| kJ | 2 | 3 | 2 | 44 | 142 | 127 | 134 | 103 | 3 | 13 | — | 2 | 1 | 1 | 2 | 1 | — | 6 | — | 4 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 1163 | 273 | 675 | 414 | 236 | 575 | 342 | 54 | 0 | 9 | 0 | 2 | 15 | 51 | 2383 | 2580 | 832 | 1678 | 273 | 160 |
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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