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Surf Forecasts:

Flies surfForecast / Long Island NY / USA

information circle12 Day Weather and Surf, issued 1 am Tuesday 16 Sep 2025 EDT
Forecast update in hr  min  s Forecast update imminent
Flies surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Flies sea temperature is
20.6° C
 (Which is slightly warmer than usual)

Best Forecast Surf Conditions for Flies this week:

The surf forecast for Flies over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 18) at 5PM. The primary swell is predicted to be 0.9m and 8s period with a secondary swell of 0.2m and 5s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Flies in the next 12 days are 0.8m 12s and forecast to arrive on Monday (Sep 22) 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 1.6m 8s period and expected on Tuesday (Sep 16) at 8AM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+) 5PM (Thu 18th Sep)3ft (0.9m) 8s
Best Surf 5PM (Thu 18th Sep)3ft (0.9m) 8s
Most Powerful 2AM (Mon 22nd Sep)2.5ft (0.8m) 12s

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

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

Short Range Forecast Some drizzle, heaviest during Tue night. Warm (max 21°C on Thu afternoon, min 18°C on Tue morning). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Warm (max 25°C on Fri afternoon, min 14°C on Sat morning). Mainly fresh winds.

Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
1
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.1
SE
0.1
S
0.2
S
0.3
S
0.3
S
0.3
S
0.2
SSW
0.9
SE
0.4
SW
0.3
SE
0.3
SE
0.9
NE
0.9
ENE
0.3
SE
0.3
SE
0.4
SE
0.6
SE
0.8
SE
0.8
SE
0.8
SE
0.6
SE
Period(s) (?)1287776583101045915141312121211
Wave
Graph
(?)Metric surfscale
Energy (?)614886387621214461234777145214172197142
Wind
(km/h)
25
ENE
25
E
25
E
25
E
20
E
15
ENE
10
NE
5
SW
20
WSW
20
NNW
20
NNW
30
NNE
25
NE
15
ESE
15
SE
15
SE
20
SSE
15
SSW
10
SSW
15
S
5
SW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		crossglasscross-
off		offoffcross-
off		crossonononcross-
on		cross-
on		crosscross-
on		glass
High Tide
/ height (m)
4:00PM
1.04
4:36AM
0.87
5:01PM
1.06
5:33AM
0.93
5:55PM
1.08
6:22AM
0.99
6:41PM
1.09
7:05AM
1.04
7:25PM
1.09
7:46AM
1.08
8:05PM
1.08
8:25AM
1.10
8:44PM
1.05
Low Tide
/ height (m)
8:49AM
0.23
10:34PM
0.21
10:13AM
0.23
11:42PM
0.18
11:32AM
0.20
12:29AM
0.15
12:28PM
0.16
1:05AM
0.12
1:10PM
0.12
1:32AM
0.10
1:44PM
0.10
1:56AM
0.09
2:15PM
0.09
2:22AM
0.08
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Sunrise6:30--6:31--6:31--6:33--6:33--6:35--6:35--
Sunset-6:58--6:55--6:53--6:52--6:51--6:49--6:46-
cloud
part cloud
light rain
part cloud
cloud
cloud
cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
Rain (mm)
--1------------------
Temp. °C181918191919202121222522151616151616171818
Feels °C (?)15141416161720222019211681112121313161617
  • 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 Previously calm conditions have become cross-shore at Flies (light winds from the NE at Westhampton Beach/Francis S. Gabreski Airport 13 km from Flies). 0.3m 10s swell from the SE to make surfable waves.

    2 hours 9 minutes ago Flies
Expand
<
>
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2 h 9 min ago

11 km/h
NE
Cross-Shore
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 Flies 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 Flies at:
surf-forecast.com

Information about the Flies Surf forecast

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

Flies is 32 km (20 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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