Fire Island Surf Break

Lat Long: 40.73° N 72.87° W

Fire Island 48 hour detailed Surf Forecast

Issued: 1 pm 20 Sep 2026 (local time)

Forecast update in  hr  min

Today's Fire Island sea temperature is
22.3°C
2.7° 

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


How big are the waves at Fire Island today (20 Sep):

  • Morning surf: Morning surf (20 Sep, local time) - 1ft (0.3m), 11s period with SE swell.
  • Afternoon surf: Afternoon surf (20 Sep, local time) - 1ft (0.3m), 11s period with SE swell.
  • Evening surf: Evening surf (20 Sep, local time) - 1.5ft (0.4m), 10s period with SE swell.

The current surf forecast for Fire Island at 7PM is: 0.8m 4s primary swell from a Southeast direction and 0.3m 10s secondary swell from a Southeast direction, 0.2m 7s secondary swell from a East-southeast direction (forecast issued at 01:00pm September 20). The wind direction is predicted to be cross-onshore.

Time (EDT) & DateWave HeightWave Period
Morning (20 Sep)1ft (0.3m)11s
Afternoon (20 Sep)1ft (0.3m)11s
Evening (20 Sep)1.5ft (0.4m)10s

Table - waves today at Fire Island. (Swell directed towards the surf break)


Short Range Forecast

Heavy rain (total 25mm), heaviest during Tue afternoon. Warm (max 20°C on Sun afternoon, min 12°C on Tue afternoon). Winds increasing (light winds from the SSW on Sun night, strong winds from the NE by Wed morning).

Sun
20
Monday
21
Tuesday
22
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
Rating
(10 max)
0
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
Height Map
Wave
Height (m)
Direction
Period (s)
0.3
SE
11
0.3
SE
11
0.3
SE
11
0.4
SE
10
0.3
SE
10
0.4
SE
9
0.6
ESE
5
0.6
ESE
6
0.8
ESE
9
0.8
E
5
0.8
E
6
1.1
E
6
1.3
E
7
1.3
E
7
1.4
E
7
1.4
E
7
1.7
E
7
1.9
E
8
1.9
E
8
1.9
E
8
1.9
E
8
Wave Graph
Metric surfscale
Energy kJ
19
19
24
27
16
30
17
26
92
37
41
92
157
144
184
192
287
413
435
432
443
Wind (km/h)
20
SSE
25
S
25
S
15
S
15
SSW
30
N
25
NNE
30
NNE
25
NE
20
NE
20
ENE
25
ENE
25
ENE
25
ENE
30
NE
25
ENE
40
NE
35
NE
35
NE
35
NE
35
NE
Wind State
cross-on
cross-on
cross-on
cross-on
cross
cross-off
cross-off
cross-off
cross-off
cross
cross-on
cross-on
cross-on
cross
cross
cross
cross
cross
cross
cross
cross
High Tide
3:53PM0.88m
4:34AM0.77m
4:49PM0.91m
5:22AM0.82m
5:36PM0.94m
Low Tide
8:21AM0.31m
9:17PM0.30m
9:22AM0.30m
10:12PM0.26m
10:19AM0.26m
light rain
light rain
light rain
light rain
light rain
light rain
part cloud
cloud
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
light rain
mod rain
mod rain
light rain
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:37
6:37
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:52
6:51
6:49
 mm
2
2
1
2
4
1
1
6
7
1
Temp °C
19
20
20
20
20
17
16
15
16
19
19
18
17
17
15
15
14
12
13
14
14
Feels °C
17
17
18
19
21
14
12
10
11
15
15
13
12
12
10
10
7
5
6
7
7
  • 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
How to use the Wavefinder 

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Fire Island surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


Nearest locationNearest