Fortress Surf Break

Lat Long: 41.02° N 71.96° W

Fortress Surf Forecast and Surf Report

Issued: 1 pm 06 Sep 2026 (local time)

Forecast update in  hr  min

Today's Fortress sea temperature is
21.2°C
0.7° 

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


Fortress surf forecast from 7 Sep 2026:

  • Best quality surf: Friday 11 Sep, 2PM (local time) - 2.5ft (0.7m), 6s period, S swell with offshore winds.
  • Most powerful swell: Thursday 10 Sep, 11AM (local time) - 6ft (1.8m), 7s period, SSW swell with 299 kJ wave energy.
  • Next surfable swell (1★+): Friday 11 Sep, 2PM (local time) - 2.5ft (0.7m), 6s 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 Friday (Sep 11) at 2PM. The primary swell is predicted to be 0.7m and 6s period with a secondary swell of 0.3m 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 1.8m 7s and forecast to arrive on Thursday (Sep 10) at 11AM. 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 Thursday (Sep 10) at 2AM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+) 2PM (Fri 11th Sep)2.5ft (0.7m) 6s
Best Surf 2PM (Fri 11th Sep)2.5ft (0.7m) 6s
Most Powerful11AM (Thu 10th Sep)6ft (1.8m) 7s

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


The Lowdown

Alright folks, Rusty here. Let’s be straight with you – this outlook for Fortress is a bit of a tough one. The whole 16-day window is looking pretty bleak for a proper surf session. We’ve got a long stretch of days with barely a ripple, and the one day that shows some size comes with a nasty wind that’ll ruin it.

The water temperature is sitting at 70°F, which is about normal for this time of year, so at least you won’t be freezing your toes off while you’re staring at flat water.

The first few days from Sunday the 6th through to Wednesday the 9th are a total write-off. We’re talking tiny 0.3ft to 1.0ft slop, mostly from the east, with almost no energy (combined energy in the teens and low twenties). It’s just not worth paddling out for.

The only real event in the whole 16 days is on Thursday the 10th. We’ve got a pulse of swell from the SSW pushing 6ft in the morning, and the wave energy jumps up to 313 (moderate energy). But here’s the kicker – the wind is howling from the SW at 22-25 mph. That’s a cross-offshore wind, which can clean it up, but it’s so strong it’ll be a battle to get out and the wave quality will be blown out. This is a short-period swell (7 seconds) so the waves will be crumbly and weak. At 6ft, it’s getting into the “too big for beginners” territory, but honestly, with that wind, it’s not a fun size for anyone. This setup looks more interesting for kite surfing than paddle surfing.

After that, we slide back into a long, flat spell. From Friday the 11th right through to Monday the 21st, the swell barely nudges above 2ft, and most days it’s smaller. The energy stays in the low teens to fifties, which is weak. The wind is a mixed bag of cross-off, onshore, and cross-shore, but it doesn’t matter because there’s no swell to work with.

The best of a bad lot might be Friday the 11th afternoon, with a 2ft S swell (6 seconds) and a clean offshore wind from the west. But it’s tiny. Or perhaps Monday the 21st, with a 2ft S swell and a 19 mph cross-offshore wind, but again, it’s just not enough.

Bottom line: There’s no standout session here. The only day with size (Thursday the 10th) is ruined by a screaming wind. The rest is a flat, disappointing stretch. If you’re desperate, the 11th and 21st offer the cleanest conditions, but you’ll be on a foamie living for the knee-high set. Sorry, folks, but this one’s a miss.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 26°C on Tue afternoon, min 18°C on Sun afternoon). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 8mm), mostly falling on Thu night. Warm (max 23°C on Wed night, min 17°C on Fri morning). Winds decreasing (strong winds from the SW on Wed night, light winds from the SE by Sat morning).

Sun
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
Friday
11
Saturday
12
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
0
0
0
0
0
0
0
0
0
0
0
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)
0.3
E
7
0.4
E
8
0.3
E
10
0.3
E
10
0.2
E
9
0.2
E
9
0.1
SE
9
0.1
SE
9
0.3
SSW
4
0.2
ESE
10
0.3
SE
9
1.8
SSW
7
1.4
SSW
7
1.1
S
7
0.7
S
6
0.6
S
6
0.3
SE
9
0.5
SSE
6
0.4
S
6
0.3
SE
10
Wave Graph
Metric surfscale
Energy kJ
10
23
18
17
7
6
3
3
4
9
13
299
197
107
36
25
14
23
12
15
Wind (km/h)
5
SSE
20
NW
25
NNW
15
W
15
NNW
15
NW
15
WSW
10
W
15
SSW
30
SW
45
SSW
35
SW
40
SW
25
W
30
NW
20
W
15
NE
15
SE
15
SSE
15
WSW
Wind State
glassy
cross-off
cross-off
cross-off
cross-off
off
cross-off
cross-off
cross
cross-off
cross
cross-off
cross-off
off
cross-off
off
cross-on
on
cross-on
cross-off
High Tide
4:36PM0.91m
5:11AM0.75m
5:44PM0.94m
6:12AM0.83m
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
Low Tide
11:08PM0.10m
10:47AM0.09m
11:59PM0.04m
11:51AM0.04m
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
part cloud
clear
clear
clear
clear
part cloud
part cloud
part cloud
cloud
part cloud
cloud
light rain
cloud
rain showers
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:18
6:20
6:20
6:22
6:22
6:24
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:12
7:10
7:08
7:07
7:06
7:04
7:01
 mm
1
7
Temp °C
18
20
20
24
25
22
26
25
23
22
23
23
23
23
18
22
22
19
20
20
Feels °C
18
18
15
20
22
19
23
23
22
19
21
20
19
19
12
18
19
18
19
19
  • 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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