Surf Forecasts:
Fortress surf forecast from 19 Aug 2026:
- Best quality surf: Monday 24 Aug, 2AM (local time) - 2.5ft (0.7m), 6s period, SSE swell with offshore winds.
- Most powerful swell: Saturday 22 Aug, 2AM (local time) - 4.5ft (1.4m), 6s period, SSE swell with 110 kJ wave energy.
- Next surfable swell (1★+): Monday 24 Aug, 2AM (local time) - 2.5ft (0.7m), 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 Monday (Aug 24) at 2AM. The primary swell is predicted to be 0.7m and 6s period with a secondary swell of 0.3m and 12s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Fortress in the next 16 days are 1.4m 6s and forecast to arrive on Saturday (Aug 22) at 2AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 5s period and expected on Saturday (Aug 22) at 5PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Mon 24th Aug) | 2.5ft (0.7m) 6s |
| Best Surf | 2AM (Mon 24th Aug) | 2.5ft (0.7m) 6s |
| Most Powerful | 2AM (Sat 22nd Aug) | 4.5ft (1.4m) 6s |
Table - best surf conditions forecast for Fortress over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s be straight with you – the next couple of weeks at Fortress are looking grim. We’ve got a long, flat spell ahead. Honestly, from now until the end of August, there’s barely a wave worth paddling for. The energy is weak, with the combined swell energy barely cracking 60 (55), and even then the conditions are just ordinary. You’ll see some tiny 2ft swells from the SE, but with a short period of only 7 seconds, it’s just not going to have any push. The water temp is sitting at 72°, which is pretty much bang on average for this time of year, so no surprises there.
Wednesday morning (19th) gives us a little 2ft SE swell with a light cross-offshore breeze, making it clean, but it’s so small and weak it’s barely a ripple. Don’t get excited. Thursday and Friday are even smaller, and the wind starts to mess things up. Saturday (22nd) is a write-off with strong onshore winds and rain. We get a little bump in energy on Monday (24th) – a 2ft S swell with a clean offshore breeze from the NW – but the period is still short at 6 seconds, so it’s going to be weak and fat. Not worth the drive.
The gap in any decent surf is brutal. From Wednesday 19th right through to the end of the month, it’s a wasteland. Nothing is breaking with any quality.
Now, looking into the first week of September, there’s a glimmer, but it’s still not a standout. On Monday, 31st August morning, we see a small 2ft SSE swell with a period of 9 seconds, giving us a bit more push (combined energy of 103). The wind is light and cross-off, so it’ll be clean. It’s still small, but it’s the best of a bad lot. By Tuesday (1st September), the swell drops again and the wind turns nasty, so that Monday morning window is your only real shot.
If you’re an expert, there’s nothing here for you. The swell never gets over 5ft, so it’s not too big for beginners, but the quality is so poor it’s not really a learning wave either. With the persistent cross-shore and onshore winds, and the short period swells, the setup here looks more interesting for a kite surfer than a paddle surfer.
Stay patient. It’s a tough run.
Rusty.
Short Range ForecastLight rain (total 7mm), mostly falling on Fri night. Warm (max 25°C on Wed afternoon, min 21°C on Fri morning). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 42mm), heaviest during Sat morning. Warm (max 25°C on Mon afternoon, min 17°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | |||||||||||||||
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 7 | SSE 6 | SE 9 | SE 6 | SE 7 | SE 8 | SE 8 | SE 8 | SSE 6 | S 6 | SSE 6 | SE 6 | SE 6 | SE 5 | SSE 6 | S 6 | SE 11 | SE 11 | SE 11 | SE 10 | SE 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 33 | 24 | 20 | 18 | 13 | 18 | 18 | 18 | 110 | 96 | 43 | 20 | 15 | 14 | 28 | 25 | 19 | 20 | 18 | 17 | 18 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-off | off | off | off | cross-on | on | on | cross-on | cross-off | cross-off | on | cross-on | off | cross-off | off | cross-off | cross-on | cross-on | cross-on |
High Tide | 1:23PM0.81m | 1:03AM0.61m | 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 | ||||||||
Low Tide | 7:27PM0.26m | 6:51AM0.20m | 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 | ||||||||
 |  |  | |  | | | |  |  |  |  | | |  | | |  | | | | |
 | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | 6:07 | — | — |
 | — | 7:40 | — | — | 7:38 | — | — | 7:37 | — | — | 7:36 | — | — | 7:35 | — | — | 7:32 | — | — | 7:31 | — |
mm | — | — | — | — | — | — | — | — | 7 | 24 | 16 | — | — | — | 2 | — | — | — | — | — | — |
Temp °C | 24 | 25 | 25 | 24 | 25 | 24 | 21 | 23 | 23 | 21 | 21 | 19 | 19 | 21 | 23 | 21 | 25 | 24 | 19 | 20 | 22 |
Feels °C | 25 | 26 | 25 | 25 | 25 | 24 | 19 | 21 | 21 | 22 | 23 | 18 | 20 | 23 | 24 | 19 | 22 | 22 | 17 | 18 | 20 |
Swell 1 Height (m) Direction Period (s) | SE 7 | SSE 6 | SE 9 | SE 6 | SE 7 | SE 8 | SE 8 | SE 8 | SSE 5 | S 6 | SSE 6 | SE 6 | SE 6 | SE 5 | SSE 6 | S 6 | S 6 | S 6 | SSW 6 | SSW 6 | S 6 |
| kJ | 33 | 24 | 20 | 18 | 13 | 18 | 18 | 18 | 51 | 96 | 43 | 20 | 15 | 14 | 28 | 25 | 19 | 20 | 13 | 8 | 7 |
Swell 2 Height (m) Direction Period (s) | S 6 | SE 9 | SSE 6 | SE 9 | S 5 | S 5 | SE 15 | SE 14 | SE 8 | ESE 8 | ESE 8 | SSW 5 | S 5 | S 5 | SE 12 | SE 12 | SE 11 | SE 6 | SE 11 | SE 10 | SE 11 |
| kJ | 12 | 14 | 6 | 12 | 2 | 2 | 8 | 8 | 17 | 6 | 12 | 9 | 4 | 4 | 22 | 21 | 19 | 5 | 18 | 17 | 18 |
Swell 3 Height (m) Direction Period (s) | SSE 10 | SE 8 | — | SE 9 | SE 9 | — | E 7 | S 5 | SE 14 | SE 13 | SE 13 | SE 13 | ESE 12 | ESE 12 | E 6 | E 7 | ESE 6 | SE 11 | ESE 6 | SE 6 | ESE 6 |
| kJ | 10 | 9 | — | 12 | 12 | — | 1 | 1 | 8 | 7 | 7 | 6 | 15 | 14 | 3 | 3 | 4 | 18 | 4 | 5 | 4 |
Wind waves Height (m) Direction Period (s) | SSW 6 | — | SSW 3 | — | — | — | ENE 2 | ESE 3 | SSE 6 | — | SW 5 | — | — | — | — | NNW 3 | — | — | NE 3 | — | — |
| kJ | 12 | — | 3 | — | — | — | 1 | 3 | 110 | — | 29 | — | — | — | — | 2 | — | — | 2 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 222 | 118 | 2 | 222 | 193 | 414 | 2568 | 123 | 36 | 36 | 15 | 178 | 394 | 0 | 2 | 10 | 222 | 51 | 636 | 451 |
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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