Fortress surfForecast / Long Island NY / USA

information circle12 Day Weather and Surf, issued 12 pm Friday 06 Mar 2026 EST
Forecast update in hr  min  s Forecast update imminent
Fortress surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Fortress sea temperature is
1.8° C
(Which is 2.6°C colder than average for this time of year)

Best Forecast Surf Conditions for Fortress this week:

The surf forecast for Fortress over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Mar 07) at 7AM. The primary swell is predicted to be 1.0m and 9s period with a secondary swell of 0.4m and 6s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Fortress in the next 12 days are 1.6m 7s and forecast to arrive on Sunday (Mar 08) at 8PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 6s period and expected on Wednesday (Mar 11) at 5PM.

Wave TypeTime (EST) & Date Wave Height & Period
Next good surf (1 star+) 7AM (Sat 7th Mar)3.5ft (1.0m) 9s
Best Surf 5PM (Sun 8th Mar)4.5ft (1.3m) 7s
Most Powerful 8PM (Sun 8th Mar)5ft (1.6m) 7s

Table - best surf conditions forecast for Fortress over the next 12 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast Light rain (total 9mm), mostly falling on Sun afternoon. Icy conditions (max 10°C on Sun morning, min -1°C on Fri morning). Winds decreasing (fresh winds from the NNE on Fri morning, calm by Fri night).

Days 3-6 Weather Summary Light rain (total 2mm), mostly falling on Wed morning. Very mild (max 15°C on Tue afternoon, min 6°C on Tue night). Winds increasing (light winds from the SSW on Tue night, strong winds from the SW by Wed night).

Friday
06
Saturday
07
Sunday
08
Monday
09
Tuesday
10
Wednesday
11
Thursday
12
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
2
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
1.6
ENE
1.1
E
1.1
E
0.9
ESE
0.9
ESE
1.4
SSW
1.6
SSW
1.3
SSW
1.1
S
0.9
S
1
S
0.9
SSW
1.1
SSW
0.8
S
0.6
S
0.7
S
1.1
S
1.3
S
1.2
S
1
S
0.7
S
Period(s) (?)678996777777776668888
Wave
Graph
(?)Metric surfscale
Energy kJ (?)1651071771401401102331861347810877995729388319119113558
Wind
(km/h)
40
NNE
30
NNE
20
ENE
15
SSW
20
SSW
35
SW
25
SW
10
W
15
WSW
20
S
25
SSW
20
SW
20
SW
20
SSW
15
SE
25
SW
25
SW
30
SW
40
NNW
25
W
35
NNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscrosscross-
on
crosscrosscross-
off
cross-
off
offcross-
off
crosscrosscross-
off
cross-
off
crossoncross-
off
cross-
off
cross-
off
cross-
off
offcross-
off
High Tide
/ height (m)
9:45PM
0.85
9:44AM
0.66
10:17PM
0.80
10:13AM
0.61
10:49PM
0.74
10:48AM
0.56
11:26PM
0.69
11:30AM
0.51
12:10AM
0.64
12:22PM
0.48
1:09AM
0.61
1:32PM
0.47
2:39AM
0.61
Low Tide
/ height (m)
2:53PM
-0.07
3:34AM
-0.01
3:24PM
-0.02
4:12AM
0.05
3:58PM
0.02
4:53AM
0.11
4:36PM
0.08
5:42AM
0.17
5:20PM
0.13
6:44AM
0.20
6:15PM
0.18
8:19AM
0.21
7:25PM
0.21
Friday
06
Saturday
07
Sunday
08
Monday
09
Tuesday
10
Wednesday
11
Thursday
12
Sunrise6:13--6:13--6:11--6:09--6:07--6:05--6:05--
Sunset-5:44--5:45--5:45--5:46--5:47--5:49--5:50-
cloud
cloud
cloud
cloud
cloud
light rain
light rain
light rain
cloud
part cloud
clear
part cloud
part cloud
part cloud
cloud
light rain
cloud
rain showers
rain showers
rain showers
part cloud
Rain (mm)
-----324-------1-121-
Temp. °C-102389101010910121315129101066-1
Feels °C (?)-11-8-1-233686457101211453-3-1-13
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

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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 12 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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