Surf Forecasts:
Fortress surf forecast from 20 Aug 2026:
- Best quality surf: Sunday 23 Aug, 2PM (local time) - 3ft (0.9m), 6s period, SSE swell with cross-offshore winds.
- Most powerful swell: Monday 24 Aug, 2PM (local time) - 4ft (1.2m), 7s period, SSW swell with 117 kJ wave energy.
- Next surfable swell (1★+): Sunday 23 Aug, 2PM (local time) - 3ft (0.9m), 6s 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 Sunday (Aug 23) at 2PM. The primary swell is predicted to be 0.9m and 6s period with a secondary swell of 0.2m and 12s. 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 1.2m 7s and forecast to arrive on Monday (Aug 24) at 2PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Thursday (Aug 20) at 11PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2PM (Sun 23rd Aug) | 3ft (0.9m) 6s |
| Best Surf | 2PM (Sun 23rd Aug) | 3ft (0.9m) 6s |
| Most Powerful | 2PM (Mon 24th Aug) | 4ft (1.2m) 7s |
Table - best surf conditions forecast for Fortress over the next 16 days.
The Lowdown
Alright, Rusty here again. Let’s break it down in feet and miles. The outlook is grim. There’s a big gap with almost nothing worth talking about for nearly two weeks.
The only potential highlight is a late-season pulse for Fortress, a reef setup. On the morning of September 4th, we might see some swell pushing 5ft from the east, but the period is a short, weak 5 seconds. The combined energy hits 226, which is moderate, but it’s worthless with a strong onshore wind from the east-southeast at 15 mph. That’s gonna be a choppy, blown-out mess. The water temp is 73°F, which is about 1°F above normal, so nothing wild. This setup is way more interesting for kite surfers than for paddle surfers. It’s a rare mention for a spot that’s fairly consistent, but the conditions just aren’t there.
Every other day in the forecast is small and poor. Swell heights barely touch 2ft, the energy is weak (mostly in the 30s-40s range), and the wind is always cross or onshore. There’s a glassy moment on the afternoon of August 26th, but with 4ft from the south-southeast at 7 seconds, it’s just ordinary. Don’t bother. It’s a blank run, and while it’s not unusual for this area, it’s still a bummer.
Rusty.
Short Range ForecastHeavy rain (total 50mm), heaviest during Sat night. Warm (max 25°C on Thu afternoon, min 18°C on Thu night). Mainly fresh winds. | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Sun night. Warm (max 23°C on Sun afternoon, min 18°C on Tue morning). Winds decreasing (fresh winds from the W on Mon afternoon, light winds from the SSE by Tue night). | |||||||||||||||||||
Thu 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | ||||||||||||||
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 7 | SE 8 | SE 8 | ENE 5 | ENE 5 | ENE 5 | ESE 8 | SE 7 | SSE 6 | SSE 6 | S 6 | S 6 | SSW 7 | S 6 | SE 11 | SE 10 | SE 11 | S 6 | S 6 | S 7 |
Wave Graph  | ||||||||||||||||||||
 kJ | 13 | 18 | 18 | 38 | 43 | 27 | 13 | 14 | 27 | 97 | 58 | 81 | 77 | 29 | 18 | 17 | 18 | 22 | 23 | 54 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | cross | on | cross-on | cross-on | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross | on | cross | cross-off | cross-off |
High Tide | 2:23PM0.77m | 1:53AM0.57m | 3:43PM0.74m | 3:07AM0.55m | 4:56PM0.75m | 5:09AM0.57m | 5:52PM0.77m | 6:10AM0.62m | 6:36PM0.80m | 6:56AM0.68m | 7:13PM0.84m | 7:34AM0.74m | 7:45PM0.87m | |||||||
Low Tide | 8:51PM0.30m | 7:45AM0.24m | 10:13PM0.29m | 8:54AM0.27m | 11:11PM0.26m | 10:13AM0.26m | 11:56PM0.22m | 11:19AM0.23m | 00:32AM0.16m | 12:09PM0.19m | 1:04AM0.11m | 12:53PM0.14m | 1:34AM0.06m | |||||||
 |  | |  |  |  |  | |  | |  | | |  | | | | | | | |
 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — |
 | 7:38 | — | — | 7:37 | — | — | 7:36 | — | — | 7:35 | — | — | 7:32 | — | — | 7:31 | — | — | 7:30 | — |
mm | — | 11 | — | — | — | 1 | 12 | 21 | 5 | — | 3 | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 23 | 19 | 21 | 21 | 19 | 20 | 23 | 23 | 23 | 23 | 21 | 23 | 23 | 19 | 21 | 22 | 20 | 23 | 23 |
Feels °C | 26 | 22 | 15 | 19 | 19 | 17 | 19 | 23 | 24 | 26 | 22 | 17 | 18 | 19 | 16 | 18 | 22 | 18 | 21 | 21 |
Swell 1 Height (m) Direction Period (s) | SE 7 | SE 8 | SE 8 | S 5 | SE 8 | ENE 5 | ESE 8 | SE 7 | SSE 6 | SSE 6 | S 6 | S 6 | SE 11 | S 6 | SSW 6 | SSW 6 | SSW 6 | S 6 | S 6 | S 7 |
| kJ | 13 | 18 | 18 | 5 | 18 | 27 | 11 | 14 | 27 | 97 | 58 | 81 | 31 | 29 | 12 | 12 | 11 | 22 | 23 | 43 |
Swell 2 Height (m) Direction Period (s) | SE 9 | S 5 | SE 15 | SE 8 | SSW 6 | SSE 5 | SSE 5 | SE 13 | NE 3 | ESE 12 | ESE 12 | SE 12 | — | SE 11 | SE 11 | SE 10 | SE 11 | SE 9 | SE 10 | SE 8 |
| kJ | 12 | 2 | 8 | 18 | 3 | 3 | 2 | 7 | 3 | 14 | 14 | 21 | — | 18 | 18 | 17 | 18 | 14 | 14 | 54 |
Swell 3 Height (m) Direction Period (s) | S 5 | — | — | SE 14 | S 5 | ESE 8 | SE 9 | SE 9 | ESE 12 | SE 12 | SE 8 | E 7 | — | ESE 6 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | E 6 | E 12 |
| kJ | 2 | — | — | 8 | 2 | 6 | 3 | 3 | 15 | 23 | 3 | 4 | — | 3 | 4 | 4 | 4 | 4 | 1 | 3 |
Wind waves Height (m) Direction Period (s) | — | NE 4 | NE 4 | ENE 5 | ENE 5 | — | ENE 4 | ENE 3 | NE 3 | — | SSW 6 | — | SSW 7 | NW 3 | — | — | — | — | — | — |
| kJ | — | 17 | 14 | 38 | 43 | — | 13 | 4 | 1 | — | 50 | — | 77 | 2 | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 193 | 222 | 222 | 668 | 1117 | 227 | 636 | 122 | 148 | 223 | 185 | 187 | 58 | 68 | 2 | 10 | 222 | 157 | 25 | 0 |
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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