Fortress Surf Break

Lat Long: 41.02° N 71.96° W

Fortress Surf Forecast and Surf Report

Issued: 1 am 17 Jul 2026 (local time)

Forecast update in  hr  min

Today's Fortress sea temperature is
20.8° C
0.5° 

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


Fortress surf forecast from 17 Jul 2026:

  • Best quality surf: Wednesday 22 Jul, 11PM (local time) - 6ft (1.8m), 10s period, S swell with offshore winds.
  • Most powerful swell: Wednesday 22 Jul, 11PM (local time) - 6ft (1.8m), 10s period, S swell with 627 kJ wave energy.
  • Next surfable swell (1★+): Sunday 19 Jul, 11AM (local time) - 3.5ft (1.0m), 7s 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 Sunday (Jul 19) at 11AM. The primary swell is predicted to be 1.0m and 7s period with a secondary swell of 0.1m and 13s. 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 10s and forecast to arrive on Wednesday (Jul 22) at 11PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 5s period and expected on Sunday (Jul 19) at 2AM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+)11AM (Sun 19th Jul)3.5ft (1.0m) 7s
Best Surf11PM (Wed 22nd Jul)6ft (1.8m) 10s
Most Powerful11PM (Wed 22nd Jul)6ft (1.8m) 10s

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


The Lowdown

Alright, Rusty here again. Let’s break it down in feet and miles for the old-school crew.

We’re looking at a pretty quiet stretch at Fortress for the next two weeks. Not a lot of fire in the ocean, but a couple of days might just be worth the paddle.

The forecast kicks off on Friday, July 17th, but it’s a total dud. Tiny 1ft swell from the south, period so short it’s barely a bump. Wind is messy. The weekend is no better – Saturday, July 18th is a write-off with strong cross-shore wind and lumpy junk.

Sunday, July 19th brings a little pulse: south swell around 4ft with an 8-second period. The combined energy is moderate at 142, and the wind is clean offshore from the WNW. It’s surfable, but nothing to get excited about. Still, if you’re itching to get wet, the morning and afternoon both have that offshore wind.

Monday, July 20th is the real standout. The morning is glassy – dead calm – with a clean 3ft south swell (8-second period) and moderate energy at 119. That’s a rare, clean, glassy session at Fortress. The waves won’t be big, but they’ll be smooth and ridable. Dawn patrol is your best bet.

Wednesday, July 22nd brings some size. The swell jumps to 7ft in the morning, then 7ft in the afternoon, with the combined energy surging to 418 and 731 – a strong push. The period is 7 to 9 seconds, so it’s a windswell, not a clean groundswell. The wind is cross-off, keeping the surface clean, but that’s expert territory for a reef break. Beginners stay away, and even experienced guys need to be careful. The quality is still marginal, so it’s not a classic.

After that, the swell drops and the wind turns onshore or cross-shore for the rest of the month. There’s a slight window on Sunday, July 26th with a 2ft south swell, clean light cross-off wind, and moderate energy at 123 – surfable, but nothing to call home about. The rest of the outlook is a long stretch of poor conditions with small, weak swell and cross-shore winds.

So, the call: Monday, July 20th is the pick for a clean, glassy session on small waves. Wednesday, July 22nd has the most size, but it’s for experts only. The rest is a waiting game.

Rusty.

Short Range Forecast

Moderate rain (total 13mm), heaviest on Sat night. Warm (max 27°C on Fri afternoon, min 19°C on Sun night). Winds increasing (light winds from the NW on Fri morning, strong winds from the S by Sat night).

Days 4-6 Weather Summary

Heavy rain (total 36mm), heaviest during Tue night. Warm (max 25°C on Wed afternoon, min 19°C on Mon morning). Winds increasing (light winds from the ENE on Mon morning, strong winds from the SW by Tue night).

Friday
17
Saturday
18
Sunday
19
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
AM
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
1
1
0
0
0
0
0
0
0
0
0
2
2
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)
0.4
SSW
5
0.5
S
6
0.3
S
5
0.7
SSW
4
1.1
S
5
0.1
SE
13
1
S
7
0.9
S
7
0.8
S
7
0.8
S
8
0.7
S
8
0.6
S
7
0.6
S
7
0.8
SE
6
1
SSE
6
1.2
SW
7
1.7
SSE
10
1.5
S
9
1.2
SSE
8
0.8
SE
8
0.8
SE
7
Wave Graph
Metric surfscale
Energy kJ
8
15
8
14
50
7
94
83
70
78
57
38
36
49
82
131
497
380
202
82
59
Wind (km/h)
10
NW
15
SW
15
WSW
30
SSW
35
S
30
SW
25
WNW
25
WNW
15
NNE
10
ENE
20
SSE
15
SSE
25
SSE
30
SSE
45
SW
30
SW
30
SW
15
W
10
SW
20
SSW
10
SSE
Wind State
off
cross-off
cross-off
cross
cross
cross-off
off
off
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross-off
cross-off
cross-off
off
cross-off
cross
cross-on
High Tide
10:56AM0.95m
11:08PM0.94m
11:45AM0.94m
11:52PM0.85m
12:33PM0.91m
00:35AM0.76m
1:24PM0.88m
1:18AM0.68m
2:18PM0.84m
2:02AM0.61m
3:18PM0.80m
2:56AM0.57m
4:23PM0.79m
4:16AM0.55m
Low Tide
4:31PM-0.02m
5:04AM-0.05m
5:25PM0.05m
5:44AM0.01m
6:20PM0.11m
6:23AM0.07m
7:21PM0.17m
7:03AM0.12m
8:32PM0.22m
7:48AM0.17m
9:44PM0.24m
8:40AM0.20m
10:46PM0.24m
part cloud
part cloud
clear
part cloud
light rain
rain showers
clear
clear
clear
clear
clear
clear
part cloud
part cloud
heavy rain
thunderstorm
clear
clear
part cloud
cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:28
5:30
5:31
5:31
5:33
5:33
5:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:16
8:15
8:15
8:15
8:14
8:13
8:13
 mm
3
10
32
4
Temp °C
22
27
25
23
23
23
23
27
26
20
22
21
22
22
23
23
25
24
20
22
22
Feels °C
19
23
20
23
20
20
20
22
22
18
19
18
21
20
20
20
21
21
19
22
21
  • 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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