Surf Forecasts:
Fortress surf forecast from 24 Aug 2026:
- Best quality surf: Sunday 30 Aug, 11PM (local time) - 5.5ft (1.7m), 6s period, SSW swell with cross-offshore winds.
- Most powerful swell: Sunday 30 Aug, 11PM (local time) - 5.5ft (1.7m), 6s period, SSW swell with 230 kJ wave energy.
- Next surfable swell (1★+): Tuesday 25 Aug, 2AM (local time) - 1.5ft (0.4m), 11s 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 Tuesday (Aug 25) at 2AM. The primary swell is predicted to be 0.7m and 6s period with a secondary swell of 0.4m and 11s. 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 6s and forecast to arrive on Sunday (Aug 30) at 11PM. 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 Tuesday (Aug 25) at 8PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Tue 25th Aug) | 1.5ft (0.4m) 11s |
| Best Surf | 11PM (Sun 30th Aug) | 5.5ft (1.7m) 6s |
| Most Powerful | 11PM (Sun 30th Aug) | 5.5ft (1.7m) 6s |
Table - best surf conditions forecast for Fortress over the next 16 days.
The Lowdown
G’day, Rusty here. Mate, let’s be straight up—Fortress has got a pretty grim run ahead of it. Over the next 16 days, there’s nothing that really jumps out as decent surf. You’ll be waiting a long time between anything worth even looking at.
The overall pattern is small, weak, and often windswept. The swell energy is mostly weak, with combined energy values often sitting below 100 (64, 41, 26, 45, 67), which means there’s just no push in the water. The waves are small—mostly 1ft to 3ft—and when a bit more energy shows up, the wind turns ugly. The one and only morning I’d even bother paddling out is Monday August 24th.
Monday August 24th – Morning only
A tiny 2ft swell from the SSE, period a short 6 seconds, so the waves will be weak and crumbly. Combined swell energy is only 64. The wind is cross-off from the SW at 9 mph, keeping things reasonably clean. Conditions are surfable but very ordinary. Water temp sits at 71°, which is about average for this time of year (anomaly of +0.9°), so nothing unusual there.
After that, it’s a long, bleak stretch. From Monday afternoon all the way through to Sunday evening (August 24th afternoon through to August 30th), there’s nothing worth recommending. Then Monday August 31st morning shows a bit more size—5ft from the SSW, period 6 seconds—with offshore wind from the WNW at 16 mph, but the combined energy is 229 (moderate). Still, the score is marginal at best, with questionable tide conditions. Not a standout, just a maybe.
From there, it gets worse. The second week into early September sees persistent strong cross-onshore winds, often fresh to near gale (22 to 31 mph), with lumpy, messy, blown-out conditions. Swells are mostly 2ft to 3ft from the SE, with long periods (12-16 seconds) that would normally be nice, but the wind rips any shape apart. Swell energy builds to moderate and even strong values (596, 341, 354), but it’s wasted.
Honestly, if you’re keen on getting wet, Monday August 24th morning is your only real chance. And even then, keep expectations low. No standouts. The best on offer is that small, clean-ish window early on. After that, the setup looks more interesting for kite surfing than paddle surfing—those strong cross-onshore winds and lumpy seas will keep a kite flyin’.
Stay tuned, forecasts can shift.
Rusty.
Short Range ForecastSome drizzle, heaviest during Mon afternoon. Warm (max 25°C on Mon afternoon, min 19°C on Tue night). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 7mm), mostly falling on Thu night. Warm (max 26°C on Fri night, min 21°C on Sat morning). Wind will be generally light. | ||||||||||||||||||||
Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | |||||||||||||||
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) | SSE 6 | S 6 | SE 11 | SE 11 | SE 10 | SE 10 | SE 9 | SE 9 | ESE 8 | ESE 8 | ESE 9 | ESE 9 | S 7 | S 7 | S 8 | S 7 | S 6 | SE 8 | S 6 | S 5 | S 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 40 | 48 | 35 | 18 | 17 | 17 | 40 | 67 | 61 | 47 | 54 | 52 | 107 | 89 | 110 | 43 | 27 | 23 | 16 | 47 | 91 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | off | cross-off | cross-off | cross-off | off | cross-off | cross | cross | cross-on | cross | cross-off | cross-off | cross-off | cross-on | on | cross-off | cross-off | cross-off | cross |
High Tide | 6:36PM0.80m | 6:56AM0.68m | 7:13PM0.84m | 7:34AM0.74m | 7:45PM0.87m | 8:07AM0.80m | 8:14PM0.88m | 8:37AM0.85m | 8:44PM0.89m | 9:07AM0.89m | 9:17PM0.88m | 9:40AM0.92m | 9:54PM0.86m | ||||||||
Low Tide | 11:19AM0.23m | 00:32AM0.16m | 12:09PM0.19m | 1:04AM0.11m | 12:53PM0.14m | 1:34AM0.06m | 1:34PM0.10m | 2:05AM0.02m | 2:14PM0.06m | 2:37AM-0.01m | 2:55PM0.05m | 3:11AM-0.02m | 3:38PM0.04m | 3:47AM-0.01m | |||||||
 |  |  | | | | | |  |  |  |  |  | | | | | | | | | |
 | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — |
 | — | 7:32 | — | — | 7:31 | — | — | 7:30 | — | — | 7:29 | — | — | 7:27 | — | — | 7:24 | — | — | 7:23 | — |
mm | — | 1 | — | — | — | — | — | — | — | — | — | 4 | 1 | 2 | — | — | — | — | — | 2 | 6 |
Temp °C | 24 | 25 | 24 | 21 | 23 | 23 | 20 | 23 | 24 | 23 | 23 | 24 | 25 | 25 | 26 | 21 | 22 | 24 | 25 | 25 | 25 |
Feels °C | 22 | 23 | 21 | 18 | 19 | 20 | 18 | 21 | 22 | 21 | 22 | 25 | 25 | 25 | 26 | 19 | 22 | 23 | 26 | 25 | 25 |
Swell 1 Height (m) Direction Period (s) | SSE 6 | SE 11 | S 6 | S 6 | ESE 6 | SSW 5 | SE 9 | SE 9 | ESE 8 | ESE 8 | ESE 9 | ESE 9 | SE 8 | SE 8 | S 8 | S 7 | S 6 | S 6 | S 6 | SE 8 | S 6 |
| kJ | 40 | 19 | 35 | 15 | 8 | 9 | 40 | 67 | 61 | 47 | 54 | 52 | 55 | 34 | 110 | 43 | 27 | 18 | 16 | 18 | 91 |
Swell 2 Height (m) Direction Period (s) | SE 12 | SE 8 | SE 11 | SE 11 | SE 10 | SE 10 | SSW 5 | — | — | — | — | E 11 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | — | — |
| kJ | 21 | 2 | 30 | 18 | 17 | 17 | 4 | — | — | — | — | 2 | 55 | 57 | 32 | 24 | 16 | 23 | 11 | — | — |
Swell 3 Height (m) Direction Period (s) | E 6 | E 6 | E 7 | ESE 6 | E 6 | ESE 6 | SE 5 | — | — | — | — | — | — | E 10 | E 10 | E 10 | E 9 | — | SE 7 | — | — |
| kJ | 3 | 1 | 4 | 8 | 1 | 3 | 1 | — | — | — | — | — | — | 2 | 2 | 2 | 2 | — | 7 | — | — |
Wind waves Height (m) Direction Period (s) | — | S 6 | WNW 3 | WSW 3 | SSW 4 | NW 2 | NW 3 | SSW 3 | SSW 4 | S 3 | S 4 | S 5 | S 7 | S 7 | NNW 2 | — | SW 2 | SSW 6 | — | S 5 | — |
| kJ | — | 48 | 1 | 3 | 20 | 1 | 2 | 6 | 8 | 7 | 15 | 47 | 107 | 89 | 1 | — | 1 | 32 | — | 47 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 222 | 0 | 193 | 222 | 15 | 2 | 9 | 163 | 163 | 575 | 55 | 9 | 38 | 15 | 54 | 668 | 10 | 187 | 0 | 9 |
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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