Surf Forecasts:
Fortress surf forecast from 25 Aug 2026:
- Best quality surf: Wednesday 26 Aug, 2PM (local time) - 2ft (0.6m), 9s period, ESE swell with cross-offshore winds.
- Most powerful swell: Tuesday 1 Sep, 2AM (local time) - 5.5ft (1.7m), 6s period, SSW swell with 232 kJ wave energy.
- Next surfable swell (1★+): Wednesday 26 Aug, 2PM (local time) - 2ft (0.6m), 9s period with ESE 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 Wednesday (Aug 26) at 2PM. The primary swell is predicted to be 0.6m and 9s period with a secondary swell of 0.3m and 5s. 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 1.7m 6s and forecast to arrive on Tuesday (Sep 01) at 2AM. 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+) | 2PM (Wed 26th Aug) | 2ft (0.6m) 9s |
| Best Surf | 2PM (Wed 26th Aug) | 2ft (0.6m) 9s |
| Most Powerful | 2AM (Tue 1st Sep) | 5.5ft (1.7m) 6s |
Table - best surf conditions forecast for Fortress over the next 16 days.
The Lowdown
Right, let’s have a look at what’s on offer. I’m not gonna lie, the next two weeks are looking pretty quiet around here. We’ve got a long stretch of small, weak swell and the wind is going to be a problem more often than not. This isn’t one of those classic runs where you’re spoilt for choice. It’s more of a waiting game, and honestly, for a lot of it, the conditions are just too messy for a proper paddle session.
The best spot to talk about is Fortress (reef). It’s a beginner-friendly reef break, fairly consistent, and it’s exposed to the swell. The water temp is sitting at 71°, which is pretty normal for this time of year, so no surprises there.
We start off with a real nothing-burger. The first few days are tiny. Tuesday the 25th morning has a 1.0ft swell from the SE with a 16 mph cross-off breeze. The energy is weak (36). It’s clean, but there’s nothing to ride. That theme continues. Wednesday the 26th morning sees a slight bump to 2ft from the SE, with a 6 mph offshore wind, but the energy is still weak (48). It’s surfable but very ordinary. The best we get in that first week is Friday the 28th afternoon. The swell picks up to 3ft from the SE, with a 9 mph offshore wind and the energy climbs to (112). It’s clean, but it’s still a pretty small day. The waves are short and weak.
The weekend is a write-off. Saturday the 29th sees a 2ft S swell with a 7-second period and a slight cross-off, but it’s inconsistent. Sunday the 30th is just crossed up and messy. We then have a long gap of poor conditions. The wind is onshore or cross-shore, the swell is small, and the energy is low. For a stretch from the 31st of August right through to the 7th of September, it’s mostly poor surf with a few mornings of clean but tiny waves.
The one true standout in this whole 16-day window, if you can even call it that, is Wednesday the 9th of September. The morning shows a 4ft swell from the S, with a 12 mph offshore wind from the NW. The energy is moderate (92). It’s clean. The afternoon is even better: a 4ft swell from the SSW, still with a 12 mph offshore wind, and the energy jumps to (106). It’s a moderate offshore, so the waves will be clean. This is the only time in the whole forecast where the swell is over 3ft, the wind is offshore, and the energy is decent. But it’s still a long way out, so keep an eye on it.
For the rest of it, the swell is too small and the wind is too strong. If you’re a beginner, the small days are fine, but you’ll be fighting the wind. Honestly, for a lot of the stronger wind days, the setup at Fortress looks more interesting for a kite surfer than a paddle surfer. The waves are just too weak and short to get excited about.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Thu night. Warm (max 24°C on Wed afternoon, min 19°C on Tue night). Winds increasing (light winds from the W on Wed afternoon, fresh winds from the SSW by Thu afternoon). | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Fri afternoon. Warm (max 23°C on Fri morning, min 18°C on Sat morning). Wind will be generally light. | ||||||||||||||||||||
Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | |||||||||||||||
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) | SE 11 | SE 10 | SE 10 | SE 9 | ESE 8 | ESE 8 | ESE 9 | ESE 9 | ESE 8 | SE 8 | SE 8 | S 7 | S 7 | S 6 | SE 8 | SE 7 | SE 8 | SE 8 | SE 7 | SSW 5 | SSW 6 |
Wave Graph | |||||||||||||||||||||
18 | 17 | 17 | 39 | 47 | 62 | 49 | 50 | 48 | 35 | 78 | 82 | 43 | 27 | 28 | 11 | 18 | 17 | 19 | 50 | 232 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross | cross | cross | cross | off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-off | cross-off | cross-off | cross-off |
High Tide | 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 | 10:17AM0.94m | 10:34PM0.82m | ||||||||
Low Tide | 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 | 4:22PM0.05m | 4:26AM0.01m | |||||||
6:07 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — | |
— | 7:31 | — | — | 7:30 | — | — | 7:29 | — | — | 7:27 | — | — | 7:24 | — | — | 7:23 | — | — | 7:22 | — | |
mm | — | — | — | — | — | — | — | — | 2 | — | 6 | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 21 | 23 | 23 | 20 | 24 | 24 | 24 | 24 | 24 | 23 | 23 | 22 | 18 | 22 | 23 | 22 | 23 | 23 | 25 | 29 | 27 |
Feels °C | 18 | 20 | 20 | 19 | 22 | 23 | 23 | 22 | 24 | 24 | 22 | 23 | 16 | 21 | 20 | 22 | 21 | 22 | 25 | 29 | 28 |
Swell 1 Height (m) Direction Period (s) | S 6 | ESE 6 | SSW 5 | SE 9 | ESE 8 | ESE 8 | ESE 9 | ESE 9 | ESE 8 | SE 6 | SE 8 | S 7 | S 7 | S 6 | SE 8 | S 6 | S 6 | SE 8 | SE 7 | SE 6 | SSW 6 |
10 | 8 | 13 | 39 | 47 | 62 | 49 | 50 | 48 | 29 | 78 | 82 | 43 | 27 | 28 | 10 | 10 | 17 | 13 | 6 | 149 | |
Swell 2 Height (m) Direction Period (s) | SE 11 | SE 10 | SE 10 | SW 5 | S 6 | S 6 | — | — | E 11 | S 5 | S 6 | SE 8 | SE 8 | SE 8 | S 6 | SE 7 | SE 8 | SE 4 | — | SE 8 | SE 16 |
18 | 17 | 17 | 6 | 3 | 3 | — | — | 2 | 14 | 32 | 55 | 32 | 22 | 18 | 11 | 18 | 5 | — | 10 | 10 | |
Swell 3 Height (m) Direction Period (s) | ESE 6 | E 6 | ESE 6 | ESE 6 | — | — | — | — | — | SE 8 | E 10 | E 10 | E 10 | — | S 6 | SE 8 | SE 4 | — | — | SE 17 | — |
8 | 1 | 3 | 3 | — | — | — | — | — | 35 | 2 | 2 | 2 | — | 1 | 11 | 4 | — | — | 11 | — | |
Wind waves Height (m) Direction Period (s) | W 3 | SW 4 | NW 2 | — | SSW 5 | SSW 4 | SSW 4 | S 5 | S 5 | — | — | — | — | — | E 3 | E 3 | — | S 5 | SSW 4 | SSW 5 | SSW 6 |
2 | 14 | 1 | — | 4 | 5 | 7 | 43 | 41 | — | — | — | — | — | 1 | 2 | — | 14 | 19 | 50 | 232 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 193 | 231 | 15 | 2 | 0 | 163 | 178 | 1155 | 219 | 9 | 0 | 2 | 0 | 10 | 2 | 10 | 2568 | 2359 | 2580 | 47 | 10 |
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.











