Surf Forecasts:
Fortress surf forecast from 9 Aug 2026:
- Best quality surf: Saturday 15 Aug, 5PM (local time) - 2.5ft (0.7m), 8s period, S swell with offshore winds.
- Most powerful swell: Thursday 13 Aug, 8AM (local time) - 3.5ft (1.1m), 5s period, SSW swell with 66 kJ wave energy.
- Next surfable swell (1★+): Saturday 15 Aug, 5PM (local time) - 2.5ft (0.7m), 8s period with S 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 Saturday (Aug 15) at 5PM. The primary swell is predicted to be 0.7m and 8s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Fortress in the next 16 days are 1.1m 5s and forecast to arrive on Thursday (Aug 13) at 8AM. 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 6s period and expected on Sunday (Aug 09) at 11PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Sat 15th Aug) | 2.5ft (0.7m) 8s |
| Best Surf | 5PM (Sat 15th Aug) | 2.5ft (0.7m) 8s |
| Most Powerful | 8AM (Thu 13th Aug) | 3.5ft (1.1m) 5s |
Table - best surf conditions forecast for Fortress over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's take a proper look at what's on the cards for the Fortress reef. I'll be straight with you – it's a lean run, so we've gotta be patient.
The first thing to say is that we're looking at a long, quiet spell. For the first week or so, from now right through until the 17th of August, there's basically nothing doing. The swell is tiny, weak, and confused, with the combined wave energy barely registering, often below 50 (weak energy). You'd be fighting for scraps on a board, and it's just not worth the effort. The water temp is around 73°F, which is pretty much average for this time of year, so no surprises there.
Now, the horizon gets a little more interesting. Early on Tuesday the 18th of August, we've got a bit of life. The swell picks up to about 3ft from the ENE, and it's glassy with barely a breath of wind. The water will be clean as a whistle. The combined energy jumps to 184 (moderate wave energy), so there's actually some push behind it. This is the standout window. Tuesday morning at Fortress is your best bet – small but clean, and with a bit of period on it (6 seconds) it'll at least be rideable. The swell direction from the ENE isn't ideal for this spot which loves a SE swell, but on a glassy day, you take what you can get.
Don't get too excited about the afternoon, though. The wind swings around and it gets messy. Thursday the 20th sees a bigger pulse of S swell, hitting 6ft, but the wind is a moderate cross-shore, chopping it all up. The energy is strong at 244, but the quality just isn't there.
Beyond that, from the 21st, it fades back into weak, onshore slop. It's a long wait, but Tuesday morning is the one to circle on the calendar. Don't hold your breath for anything else.
- Rusty
Short Range ForecastMostly dry. Warm (max 31°C on Sun afternoon, min 22°C on Mon morning). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Wed night. Warm (max 27°C on Thu afternoon, min 18°C on Fri night). Winds increasing (calm on Wed morning, fresh winds from the WNW by Thu night). | ||||||||||||||||||||
Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | |||||||||||||||
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) | S 6 | SSW 6 | S 6 | S 5 | SSW 5 | SSW 6 | S 6 | S 6 | S 6 | SSW 6 | SSW 6 | S 4 | SSW 6 | S 6 | S 5 | ESE 9 | S 5 | S 7 | S 7 | S 8 | S 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 34 | 39 | 24 | 14 | 8 | 52 | 43 | 33 | 26 | 10 | 10 | 18 | 42 | 31 | 14 | 8 | 9 | 8 | 28 | 57 | 42 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | glassy | cross | cross-off | off | cross-off | cross-off | glassy | cross | cross-off | cross-off | off | off | off | cross-off | cross-off | cross-off | off | cross |
High Tide | 5:47PM0.98m | 6:20AM0.77m | 6:49PM1.02m | 7:18AM0.85m | 7:42PM1.05m | 8:09AM0.92m | 8:30PM1.05m | 8:57AM0.98m | 9:15PM1.02m | 9:42AM1.00m | 9:57PM0.97m | 10:26AM1.00m | 10:37PM0.90m | ||||||||
Low Tide | 10:45AM0.05m | 00:15AM0.02m | 11:51AM0.01m | 1:04AM-0.03m | 12:50PM-0.04m | 1:49AM-0.08m | 1:44PM-0.07m | 2:30AM-0.10m | 2:34PM-0.08m | 3:10AM-0.09m | 3:22PM-0.05m | 3:46AM-0.07m | 4:08PM-0.01m | 4:21AM-0.02m | |||||||
 | |  | | |  |  | | |  | |  | | | | | | | | | | |
 | 5:50 | — | — | 5:52 | — | — | 5:52 | — | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — |
 | — | 7:54 | — | — | 7:52 | — | — | 7:52 | — | — | 7:51 | — | — | 7:49 | — | — | 7:47 | — | — | 7:46 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 31 | 28 | 24 | 26 | 28 | 25 | 28 | 28 | 23 | 24 | 25 | 26 | 27 | 25 | 20 | 24 | 24 | 20 | 24 | 24 |
Feels °C | 28 | 29 | 27 | 25 | 26 | 28 | 26 | 27 | 27 | 25 | 23 | 24 | 26 | 24 | 18 | 14 | 19 | 20 | 15 | 19 | 18 |
Swell 1 Height (m) Direction Period (s) | S 6 | SE 7 | S 6 | S 5 | SSE 6 | S 6 | S 6 | S 6 | S 6 | SSW 6 | SE 8 | SE 8 | SSW 6 | S 6 | S 5 | SSW 5 | S 5 | S 7 | S 7 | S 8 | S 8 |
| kJ | 34 | 2 | 24 | 14 | 4 | 36 | 43 | 33 | 26 | 10 | 3 | 3 | 42 | 31 | 14 | 5 | 9 | 8 | 28 | 57 | 42 |
Swell 2 Height (m) Direction Period (s) | E 8 | — | SE 7 | SE 10 | SE 10 | SE 10 | SE 9 | SE 9 | SE 9 | SE 8 | SE 14 | SE 14 | SE 8 | SE 8 | ESE 9 | ESE 9 | ESE 9 | SE 9 | SE 9 | — | SE 9 |
| kJ | 1 | — | 2 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 8 | 8 | 3 | 3 | 8 | 8 | 8 | 3 | 3 | — | 3 |
Swell 3 Height (m) Direction Period (s) | — | E 11 | SE 10 | E 8 | E 8 | E 8 | — | — | — | — | — | SE 11 | SE 14 | SE 13 | SE 13 | SE 13 | E 13 | E 12 | E 12 | — | — |
| kJ | — | 2 | 4 | 1 | 1 | 1 | — | — | — | — | — | 5 | 8 | 7 | 7 | 7 | 3 | 3 | 3 | — | — |
Wind waves Height (m) Direction Period (s) | — | SSW 6 | — | — | SSW 5 | SSW 6 | — | — | NNW 3 | — | SSW 6 | S 4 | WNW 3 | W 3 | NW 3 | NW 3 | W 2 | NNW 4 | NNW 3 | NW 3 | N 3 |
| kJ | — | 39 | — | — | 8 | 52 | — | — | 1 | — | 10 | 18 | 2 | 7 | 4 | 4 | 1 | 16 | 4 | 2 | 5 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2 | 185 | 15 | 803 | 676 | 83 | 15 | 83 | 15 | 803 | 824 | 15 | 675 | 675 | 68 | 815 | 55 | 815 | 815 | 1784 | 668 |
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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