Fortress Surf Break

Lat Long: 41.02° N 71.96° W

Fortress Surf Forecast and Surf Report

Issued: 1 pm 08 Sep 2026 (local time)

Forecast update in  hr  min

Today's Fortress sea temperature is
21.3°C
0.8° 

Fortress surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Fortress surf forecast from 8 Sep 2026:

  • Best quality surf: Thursday 10 Sep, 11PM (local time) - 3.5ft (1.1m), 7s period, SSW swell with offshore winds.
  • Most powerful swell: Thursday 10 Sep, 5AM (local time) - 6ft (1.9m), 7s period, SSW swell with 335 kJ wave energy.
  • Next surfable swell (1★+): Thursday 10 Sep, 11PM (local time) - 3.5ft (1.1m), 7s period with SSW 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 Thursday (Sep 10) at 11PM. The primary swell is predicted to be 1.1m and 7s period with a secondary swell of 0.2m and 10s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Fortress in the next 16 days are 1.9m 7s and forecast to arrive on Thursday (Sep 10) at 5AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Wednesday (Sep 09) at 11PM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+)11PM (Thu 10th Sep)3.5ft (1.1m) 7s
Best Surf11PM (Thu 10th Sep)3.5ft (1.1m) 7s
Most Powerful 5AM (Thu 10th Sep)6ft (1.9m) 7s

Table - best surf conditions forecast for Fortress over the next 16 days.


The Lowdown

Alright, Rusty here, and I’ve got to be honest – this is a tough outlook. The only break on the menu is Fortress, and we’re looking at a long, dry spell before anything gets interesting.

The water is sitting at 70°, which is standard for the season.

The first few days are a total loss. From Tuesday the 8th through the end of the first week, it’s flat and tiny. Swell is barely 0.3ft, and the combined energy is a pathetic 4 (weak) on the 8th. The wind is messy, and the conditions are just poor. No point even thinking about it.

There’s a slight bump on Thursday the 10th, with the swell hitting 5ft from the SSW, but it’s a short-period 7-second wind swell with a combined energy of 277 (moderate). The wind is clean cross-off, so it’ll look okay, but the report says “poor surf conditions.” Not worth the drive.

Friday the 11th afternoon offers a tiny glimmer: a light offshore wind from the W and 2ft of S swell. The energy is 71 (weak), and the comment says “surfable waves but very ordinary conditions.” It’s the best of the first week, but it’s still pretty poor.

Then we hit a huge gap. From the 12th through the 20th of September, it’s flat. The swell is tiny, the wind is mostly onshore or cross, and there’s nothing to get excited about.

Now, the only real pulse comes in the second week. On Sunday the 20th, the swell climbs to 5ft from the ENE, with a combined energy of 197 (moderate). The morning wind is clean cross-off. Then Monday the 21st shows a bigger push: 7ft from the E, with a combined energy of 336 (moderate). The period is a short 6 seconds, and the wind is cross-on, so it’ll be bumpy.

Tuesday the 22nd morning is the standout. The swell is 7ft from the ESE, with a combined energy of 417 (strong). The wind is a gentle cross-shore from the SSW. The report calls it “marginal,” but this is the biggest energy we see, and the swell is over 5ft. For a reef break, that’s expert territory, but for the crew who can handle it, it’s the only window that looks worth a paddle. The direction is close enough to the optimum SE to work.

After that, it drops off into the 23rd with nothing.

So, the first week is a washout. The second week has a bit of life around the 20th to the 22nd. The true standout is the Tuesday the 22nd morning session, with that 7ft SSE swell and a gentle cross-shore wind. It’s the only time the energy hits the strong range. For the rest, it’s a waiting game.

Rusty.

Short Range Forecast

Light rain (total 3mm), mostly falling on Thu morning. Warm (max 26°C on Thu afternoon, min 19°C on Thu night). Winds increasing (light winds from the WSW on Tue night, strong winds from the SW by Wed night).

Days 5-7 Weather Summary

Light rain (total 3mm), mostly falling on Sun afternoon. Warm (max 23°C on Fri afternoon, min 16°C on Sat morning). Wind will be generally light.

Tue
8
Wednesday
9
Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
1
0
1
0
0
0
0
0
0
0
1
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.1
SE
9
0.1
SE
9
0.3
SSW
4
0.3
SE
10
1.9
SSW
6
1.6
SSW
7
1.4
SSW
7
0.9
SSW
7
0.7
S
6
0.7
S
7
0.5
S
7
0.3
SE
9
0.3
SE
9
0.3
SE
10
0.4
SE
10
0.4
SE
9
0.4
SE
9
0.9
SSE
6
0.8
SSE
6
0.7
SE
6
Wave Graph
Metric surfscale
Energy kJ
3
3
4
15
275
263
203
73
40
54
22
14
14
15
33
31
29
63
40
33
Wind (km/h)
25
SW
15
W
15
SSW
35
SSW
45
SW
30
WSW
30
SW
15
NW
20
NNW
15
W
15
NE
10
NE
10
ESE
10
SW
20
S
5
SSW
10
SSW
10
W
20
SSW
20
NE
Wind State
cross-off
cross-off
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross
cross-on
on
cross-off
cross
glassy
cross
cross-off
cross
cross-on
High Tide
6:39PM0.98m
7:03AM0.91m
7:27PM0.99m
7:50AM0.98m
8:11PM0.98m
8:33AM1.02m
8:51PM0.95m
9:14AM1.04m
9:28PM0.91m
9:53AM1.02m
10:02PM0.85m
10:31AM0.98m
10:34PM0.79m
Low Tide
00:44AM-0.01m
12:46PM-0.02m
1:24AM-0.04m
1:34PM-0.05m
2:00AM-0.05m
2:19PM-0.05m
2:34AM-0.05m
3:01PM-0.04m
3:07AM-0.03m
3:41PM0.01m
3:38AM0.01m
4:20PM0.06m
4:11AM0.06m
clear
clear
part cloud
part cloud
part cloud
rain showers
part cloud
light rain
clear
clear
clear
clear
clear
part cloud
cloud
light rain
rain showers
part cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:20
6:22
6:22
6:24
6:24
6:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:08
7:07
7:06
7:04
7:01
7:00
6:59
 mm
1
2
2
1
Temp °C
24
24
23
23
23
23
26
25
20
23
22
16
18
21
21
19
21
21
23
23
Feels °C
22
20
22
21
18
19
24
25
17
19
17
12
16
20
20
18
21
22
22
24
  • Map Icons:
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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