Surf Forecasts:
Fortress surf forecast from 31 Jul 2026:
- Best quality surf: Monday 3 Aug, 11PM (local time) - 6ft (1.9m), 8s period, S swell with offshore winds.
- Most powerful swell: Monday 3 Aug, 8PM (local time) - 6ft (1.9m), 8s period, S swell with 443 kJ wave energy.
- Next surfable swell (1★+): Friday 31 Jul, 11AM (local time) - 3ft (0.9m), 9s 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 Friday (Jul 31) at 11AM. The primary swell is predicted to be 0.9m and 9s period with a secondary swell of 0.2m and 6s. 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 1.9m 8s and forecast to arrive on Monday (Aug 03) at 8PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Friday (Jul 31) at 8PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Fri 31st Jul) | 3ft (0.9m) 9s |
| Best Surf | 11PM (Mon 3rd Aug) | 6ft (1.9m) 8s |
| Most Powerful | 8PM (Mon 3rd Aug) | 6ft (1.9m) 8s |
Table - best surf conditions forecast for Fortress over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s on the cards for Fortress.
Straight up, we’re looking at a pretty drawn-out run of ordinary conditions. The first few days are a write-off, honestly. We’ve got a long gap of nothing really surfable until we get a little window of hope.
Things start to get interesting on Monday, the 10th of August. That morning, the charts are showing a 6ft S swell with a period of 9 seconds, and the combined energy is a solid 499 – that’s a decent pulse of power. The wind is going to be glassy, and that’s a massive positive. Fortress is a reef break, fairly consistent, and it’s exposed to the swell. That Monday morning looks like the standout. It’s a clean, punchy set-up, though the period is a bit short of a classic groundswell, so it’ll be a bit more walled up than a deep-water bomb. The water temp is sitting at 69°, which is a bit colder than normal for this time of year, so don’t forget a warmer suit.
After that Monday morning window, the quality drops off again. The Tuesday morning (11th) has glassy conditions, but the swell is down to 3ft from the SSE, and the energy is only 88. It’s a clean little wave, but nothing to get too excited about.
The rest of the two-week stretch is a real bummer. The wind is all over the place, mostly cross-shore or cross-onshore, and the swell is small, short-period, and weak. The combined energy values are often in double digits or low triple digits, which is just weak. There’s a bit of a spike on Monday afternoon (10th) with a 5ft S swell and 366 energy, but the wind turns cross and the conditions get sloppy. For the most part, this is a waiting game.
So, the pick of the bunch is definitely Monday morning, the 10th of August. If you can get out there for that glassy, 6ft S swell, you’ll be stoked. The rest of the time, it’s a tough call. For the beginners, that 6ft swell might be a bit much, and the 5ft on Monday afternoon is also pushing it. Anything over 8ft we don’t see, so no worries there for the experts.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Sun night. Warm (max 25°C on Sat afternoon, min 19°C on Fri morning). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 14mm), heaviest on Mon night. Warm (max 25°C on Mon afternoon, min 21°C on Tue morning). Winds decreasing (strong winds from the SSW on Mon afternoon, calm by Tue night). | ||||||||||||||||||||
Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | |||||||||||||||
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 9 | SSE 8 | SSE 8 | S 8 | S 8 | S 8 | S 7 | S 7 | S 7 | S 6 | S 8 | S 8 | S 8 | S 7 | S 7 | SSE 7 | SE 7 | S 5 | S 6 | SSW 6 | SSW 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 111 | 92 | 70 | 84 | 98 | 43 | 47 | 44 | 14 | 80 | 368 | 410 | 256 | 156 | 77 | 60 | 22 | 64 | 101 | 97 | 117 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross | cross | cross | cross-on | cross-on | cross | cross | cross | glassy | cross-on | cross-on | cross-off | cross-on | cross-on | cross | cross | cross | cross |
High Tide | 9:42AM0.79m | 9:42PM0.86m | 10:13AM0.82m | 10:15PM0.84m | 10:47AM0.84m | 10:53PM0.80m | 11:24AM0.86m | 11:36PM0.76m | 12:08PM0.87m | 00:24AM0.72m | 12:59PM0.88m | 1:20AM0.68m | 1:59PM0.89m | 2:26AM0.65m | |||||||
Low Tide | 3:12PM0.10m | 3:43AM0.01m | 3:54PM0.10m | 4:17AM0.02m | 4:38PM0.11m | 4:55AM0.03m | 5:27PM0.13m | 5:36AM0.05m | 6:22PM0.15m | 6:22AM0.07m | 7:27PM0.17m | 7:17AM0.09m | 8:46PM0.17m | ||||||||
 | |  | |  |  | | |  |  | |  |  | | | | | | | | | |
 | 5:41 | — | — | 5:43 | — | — | 5:43 | — | — | 5:45 | — | — | 5:46 | — | — | 5:47 | — | — | 5:48 | — | — |
 | — | 8:05 | — | — | 8:04 | — | — | 8:02 | — | — | 8:01 | — | — | 8:00 | — | — | 7:59 | — | — | 7:58 | — |
mm | — | — | — | — | — | — | — | — | 2 | 2 | 1 | 8 | 3 | — | — | — | — | — | — | — | — |
Temp °C | 21 | 24 | 24 | 24 | 25 | 24 | 23 | 23 | 24 | 24 | 25 | 24 | 22 | 22 | 23 | 23 | 23 | 24 | 25 | 26 | 25 |
Feels °C | 22 | 22 | 24 | 24 | 24 | 23 | 24 | 23 | 25 | 24 | 22 | 24 | 25 | 24 | 26 | 26 | 24 | 25 | 25 | 25 | 25 |
Swell 1 Height (m) Direction Period (s) | SSE 9 | SSE 8 | SSE 8 | S 8 | SE 8 | S 8 | SE 7 | SE 6 | S 7 | SSE 8 | E 8 | — | S 8 | S 7 | S 7 | SSE 7 | SE 7 | SE 8 | E 10 | SE 8 | SE 7 |
| kJ | 111 | 92 | 70 | 84 | 11 | 43 | 18 | 11 | 14 | 19 | 1 | — | 256 | 156 | 77 | 60 | 22 | 3 | 2 | 9 | 8 |
Swell 2 Height (m) Direction Period (s) | E 6 | E 6 | E 6 | SE 9 | SE 6 | SE 7 | SSE 9 | S 9 | SE 7 | SE 9 | — | — | ESE 8 | SE 8 | E 11 | — | S 6 | E 11 | E 10 | E 11 | SE 11 |
| kJ | 3 | 3 | 1 | 12 | 6 | 7 | 8 | 6 | 14 | 3 | — | — | 7 | 3 | 2 | — | 20 | 2 | 2 | 2 | 5 |
Swell 3 Height (m) Direction Period (s) | — | ENE 6 | E 6 | E 6 | E 6 | SE 8 | S 9 | SE 9 | SSE 9 | E 8 | — | — | — | — | — | — | E 10 | E 10 | — | — | SE 11 |
| kJ | — | 4 | 1 | 1 | 1 | 11 | 15 | 3 | 8 | 1 | — | — | — | — | — | — | 2 | 2 | — | — | 5 |
Wind waves Height (m) Direction Period (s) | — | SSW 3 | SSW 4 | WSW 4 | S 8 | S 4 | S 7 | S 7 | S 4 | S 6 | S 8 | S 8 | — | — | — | SE 7 | — | S 5 | S 6 | SSW 6 | SSW 6 |
| kJ | — | 3 | 12 | 3 | 98 | 7 | 47 | 44 | 9 | 80 | 368 | 410 | — | — | — | 36 | — | 64 | 101 | 97 | 117 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 9 | 0 | 9 | 801 | 273 | 38 | 1155 | 801 | 1498 | 144 | 0 | 32 | 15 | 0 | 9 | 668 | 55 | 167 | 227 | 38 |
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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