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Surf Forecasts:

Fire Island surf break

Fire Island surfForecast / Long Island NY / USA

information circle12 Day Weather and Surf, issued 7 pm Thursday 18 Sep 2025 EDT
Forecast update in hr  min  s Forecast update imminent
Fire Island surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Fire Island sea temperature is
21.1° C
 (Which is 1.3°C warmer than normal for this time of year)

Best Forecast Surf Conditions for Fire Island this week:

The surf forecast for Fire Island over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Sep 19) at 2AM. The primary swell is predicted to be 0.7m and 8s period with a secondary swell of 0.4m and 4s. Another secondary swell of 0.4m and 4s is also forecast. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Fire Island in the next 12 days are 1.2m 11s and forecast to arrive on Monday (Sep 22) at 2PM. Winds are predicted to be onshore at the time the swell arrives.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Fri 19th Sep)2.5ft (0.7m) 8s
Best Surf11AM (Mon 22nd Sep)2.5ft (0.7m) 11s
Most Powerful 2PM (Mon 22nd Sep)4ft (1.2m) 11s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Mostly dry. Warm (max 26°C on Fri afternoon, min 16°C on Sat morning). Wind will be generally light.

Days 3-6 Weather Summary Some drizzle, heaviest during Tue afternoon. Warm (max 24°C on Tue afternoon, min 15°C on Sun night). Wind will be generally light.

Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thu
25
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
1
0
0
0
0
0
0
0
0
0
2
0
0
1
2
2
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.7
SE
0.5
ESE
0.3
SE
0.3
SE
1
E
1
E
1
ESE
1.1
ESE
0.6
SE
0.6
SE
0.7
SE
1.1
SE
1.1
SE
1.1
SE
1.1
SE
1.1
SE
0.9
SE
0.8
SE
0.6
SE
0.5
SE
0.9
ESE
Period(s) (?)87109666612121111101010111010995
Wave
Graph
(?)Metric surfscale
Energy kJ (?)573019135966677496108112282241251277298163110654039
Wind
(km/h)
10
NW
10
WNW
5
NW
20
NNE
20
ENE
20
ESE
15
ESE
25
E
20
E
5
ENE
5
E
10
S
15
SW
20
WSW
15
WNW
10
NNW
20
NNE
20
ESE
15
E
15
ESE
15
SE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offoffglasscross-
off		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		crossglasscross-
on		crosscross-
off		cross-
off		offcross-
off		cross-
on		cross-
on		onon
High Tide
/ height (m)
6:35AM
0.98
6:53PM
1.07
7:18AM
1.01
7:36PM
1.06
7:57AM
1.04
8:15PM
1.04
8:34AM
1.05
8:52PM
1.00
9:09AM
1.04
9:26PM
0.96
9:42AM
1.02
10:00PM
0.91
10:14AM
1.00
Low Tide
/ height (m)
11:54PM
0.16
12:02PM
0.16
12:37AM
0.13
12:50PM
0.13
1:14AM
0.12
1:32PM
0.11
1:49AM
0.10
2:10PM
0.10
2:22AM
0.10
2:46PM
0.10
2:56AM
0.11
3:23PM
0.12
3:30AM
0.13
4:01PM
0.15
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thu
25
Sunrise-6:35--6:35--6:37--6:37--6:39--6:39--6:41-
Sunset--6:53--6:52--6:51--6:49--6:46--6:45--6:44
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
light rain
clear
clear
part cloud
part cloud
clear
clear
Rain (mm)
--------------1------
Temp. °C222426241819181717161717192124222022191818
Feels °C (?)222326231415151412131715171924221821171616
  • 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

Eyeball surf reportRecent Eyeball Surf Reports for Long Island NY

  1. weather stationWind Update Continuing clean conditions at Fire Island (light winds from the SW at Shirley Airport 10 km from Fire Island). 0.7m 7s swell from the ESE with a 0.3m 4s local chop from the SSW. 2 swells combining to make bigger set waves.

    1 hour 45 minutes ago Fire Island
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1 h 45 min ago

7 km/h
SW
Clean
Please reload the page to see if there are any updates.

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.

View detailed surf forecast for Fire Island at:
surf-forecast.com

Information about the Fire Island Surf forecast

The above surf forecast table for Fire Island provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Fire Island can be found by selecting the local surf guide option on the grey menu. Our Fire Island 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 (Fire Island) 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 Fire Island 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.

Fire Island is 8 km (5 miles) from Mastic. If you plan a vacation in Long Island New York, look for hotels and other accommodation in Mastic. Mastic has rooms for a wide range of budgets as well as car hire and transport links.

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