Flies surfForecast / Long Island NY / USA

information circle16 Day Weather and Surf, issued 1 pm Monday 20 Apr 2026 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
8.5° C
(Which is 1.1°C warmer than normal for this time of year)

Best Forecast Surf Conditions for Flies this week:

The surf forecast for Flies over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Apr 22) at 8PM. The primary swell is predicted to be 1.2m and 6s period. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Flies in the next 16 days are 1.5m 6s and forecast to arrive on Sunday (Apr 26) at 2PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 8s period and expected on Monday (Apr 27) at 8PM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Wed 22nd Apr)4ft (1.2m) 6s
Best Surf 8PM (Wed 22nd Apr)4ft (1.2m) 6s
Most Powerful 2PM (Sun 26th Apr)5ft (1.5m) 6s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast Light rain (total 5mm), mostly falling on Wed morning. Mild temperatures (max 9°C on Mon afternoon, min 3°C on Tue morning). Mainly fresh winds.

Days 3-6 Weather Summary Light rain (total 2mm), mostly falling on Fri morning. Very mild (max 17°C on Thu afternoon, min 6°C on Fri morning). Wind will be generally light.

Mon
20
Tuesday
21
Wednesday
22
Thursday
23
Friday
24
Saturday
25
Sunday
26
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
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
Wave Height (m) & direction (?)
0.4
SSW
0.2
SSW
0.2
S
0.2
SSW
0.5
S
1.1
S
1.3
S
0.7
SSW
0.5
SSW
0.6
SSW
0.6
SSW
0.4
SSW
0.5
SW
0.4
SW
0.7
E
0.7
ESE
0.7
SE
1.4
E
0.4
S
0.1
S
0.2
S
Period(s) (?)766535666666644445789
Wave
Graph
(?)Metric surfscale
Energy kJ (?)1543366410829203232121741413171061616
Wind
(km/h)
10
NW
25
N
10
N
20
SSW
25
SSW
35
S
20
SSE
15
NNE
20
WSW
15
NNW
10
N
15
WNW
25
WSW
20
NNE
20
ENE
15
ESE
10
E
15
ENE
15
SE
10
ENE
15
ENE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offcross-
off
cross-
off
crosscrosscross-
on
oncross-
off
cross-
off
offcross-
off
offcross-
off
cross-
off
cross-
on
oncross-
on
cross-
on
oncrosscross-
on
High Tide
/ height (m)
10:56PM
1.19
11:27AM
0.92
11:51PM
1.13
12:26PM
0.88
12:50AM
1.06
1:30PM
0.85
1:55AM
1.00
2:38PM
0.85
3:02AM
0.97
3:43PM
0.89
4:06AM
0.95
4:42PM
0.94
5:02AM
0.95
Low Tide
/ height (m)
3:57PM
-0.06
4:46AM
-0.03
4:48PM
0.01
5:43AM
0.03
5:45PM
0.08
6:47AM
0.09
6:50PM
0.15
7:59AM
0.13
8:06PM
0.19
9:16AM
0.14
9:32PM
0.20
10:23AM
0.13
10:53PM
0.18
11:16AM
0.12
Mon
20
Tuesday
21
Wednesday
22
Thursday
23
Friday
24
Saturday
25
Sunday
26
Sunrise--6:01--6:01--5:58--5:58--5:56--5:54--5:54
Sunset7:34--7:35--7:36--7:37--7:37--7:38--7:39--
light rain
clear
clear
part cloud
cloud
light rain
light rain
part cloud
clear
part cloud
part cloud
light rain
clear
clear
cloud
part cloud
clear
part cloud
part cloud
part cloud
clear
Rain (mm)
1----22----2---------
Temp. °C9845667891715710117878987
Feels °C (?)4-1-11-1-21741282461323443
  • 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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Quick surf report for Flies:

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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.


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 16 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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