Fortress Surf Break

Lat Long: 41.02° N 71.96° W

Fortress Surf Forecast and Surf Report

Issued: 7 pm 11 Sep 2026 (local time)

Forecast update in  hr  min

Today's Fortress sea temperature is
20.9°C
0.6° 

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


Fortress surf forecast from 12 Sep 2026:

  • Best quality surf: Sunday 13 Sep, 8PM (local time) - 1.5ft (0.4m), 9s period, SE swell with offshore winds.
  • Most powerful swell: Sunday 13 Sep, 2AM (local time) - 2.5ft (0.7m), 10s period, SSE swell with 85 kJ wave energy.
  • Next surfable swell (1★+): Sunday 13 Sep, 8PM (local time) - 1.5ft (0.4m), 9s period with SE 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 Sunday (Sep 13) at 8PM. The primary swell is predicted to be 0.4m and 9s period with a secondary swell of 0.7m and 5s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Fortress in the next 16 days are 0.7m 10s and forecast to arrive on Sunday (Sep 13) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Thursday (Sep 17) at 8PM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Sun 13th Sep)1.5ft (0.4m) 9s
Best Surf 8PM (Sun 13th Sep)1.5ft (0.4m) 9s
Most Powerful 2AM (Sun 13th Sep)2.5ft (0.7m) 10s

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


The Lowdown

Alright, grab a seat. Rusty here, and I'm looking straight at the Fortress forecast. Honestly, it’s a tough one. We’ve got a 16-day window, and for a good chunk of it, there’s just nothing worth paddling out for.

Right now, we're in a flat spell that runs almost the whole first week and a half. From Saturday the 12th all the way through to Thursday the 24th, it’s mostly tiny, weak, and junky. Swell heights are barely scraping 2 ft, with combined energy reading in the paltry 20s and 30s – you'd be fighting for a ride. Winds are all over the place, mostly onshore or cross, and the water temp feels about average for this time of year.

There is a little bit of light at the end of the tunnel, though. Keep your eyes on Friday the 25th. We see a jump in size, but it’s still a bit raw. By Saturday the 26th morning, things almost come together. A 4 ft SE swell, period around 7 seconds, and crucially, glassy conditions with a light southerly breeze out of the south. The combined energy climbs to 209 (moderate). That’s the best we see. It won't be perfect, the short period means it might be a bit bumpy, but for this run, that Saturday morning glass-off is the standout – clean conditions for small waves. If you're an experienced surfer, you might get a couple of fun ones, but the 4 ft swell isn't anything too serious.

After that, it gets messy again, with strong winds. Don't hold your breath for this one.

Rusty.

Short Range Forecast

Heavy rain (total 41mm), heaviest during Sun morning. Warm (max 22°C on Fri night, min 17°C on Mon morning). Mainly fresh winds.

Days 5-7 Weather Summary

Mostly dry. Warm (max 21°C on Mon night, min 15°C on Mon night). Winds decreasing (fresh winds from the NE on Mon night, calm by Wed afternoon).

Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
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
1
0
0
0
0
0
0
0
1
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)
0.5
S
6
0.3
SE
9
0.3
SE
9
0.7
SSE
10
0.4
SE
10
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.5
SE
8
0.4
SE
8
1.1
ENE
6
0.7
E
5
0.8
ESE
7
0.7
ESE
8
0.7
ESE
8
0.7
ESE
8
0.6
ESE
8
0.5
E
7
0.4
ESE
7
Wave Graph
Metric surfscale
Energy kJ
19
14
14
85
33
31
29
20
35
19
83
25
67
70
73
68
48
28
16
Wind (km/h)
10
N
15
E
15
SSE
20
SSE
25
SSW
15
NW
10
WSW
30
NNW
20
N
25
NNE
20
ENE
15
E
10
NE
10
E
5
SSE
15
SSW
20
SW
30
SW
30
SW
Wind State
cross-off
cross-on
cross-on
cross-on
cross
cross-off
cross-off
cross-off
cross-off
cross
cross-on
on
cross
cross-on
glassy
cross
cross-off
cross-off
cross-off
High Tide
8:51PM0.95m
9:14AM1.04m
9:28PM0.91m
9:53AM1.02m
10:02PM0.85m
10:31AM0.98m
10:34PM0.79m
11:08AM0.92m
11:06PM0.73m
11:46AM0.85m
11:40PM0.67m
12:26PM0.79m
00:22AM0.62m
Low Tide
2:34AM-0.05m
3:01PM-0.04m
3:07AM-0.03m
3:41PM0.01m
3:38AM0.01m
4:20PM0.06m
4:11AM0.06m
4:59PM0.13m
4:46AM0.11m
5:42PM0.20m
5:24AM0.17m
6:31PM0.27m
clear
clear
part cloud
part cloud
heavy rain
rain showers
clear
rain showers
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:24
6:24
6:26
6:26
6:28
6:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:04
7:01
7:00
6:59
6:57
6:55
6:53
 mm
22
8
11
Temp °C
22
18
20
22
22
22
21
18
22
21
16
17
17
15
17
18
19
20
21
Feels °C
19
15
19
21
21
23
22
13
17
14
13
14
13
13
17
16
17
17
19
  • Map Icons:
  • Break
  • 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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