Flies surfForecast / Long Island NY / USA

information circle16 Day Weather and Surf, issued 7 pm Saturday 16 May 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
10.9° C
(Which is slightly cooler than normal)

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 Sunday (May 17) at 11AM. The primary swell is predicted to be 0.9m and 8s period with a secondary swell of 0.9m and 7s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Flies in the next 16 days are 1.7m 6s and forecast to arrive on Wednesday (May 20) at 2AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.0m 7s period and expected on Saturday (May 23) at 2PM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+)11AM (Sun 17th May)3ft (0.9m) 8s
Best Surf 2AM (Mon 18th May)3ft (0.9m) 8s
Most Powerful 2AM (Wed 20th May)5.5ft (1.7m) 6s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Warm (max 25°C on Sun afternoon, min 15°C on Sat night). Winds decreasing (fresh winds from the SSW on Sat night, calm by Sun night).

Days 5-7 Weather Summary

Light rain (total 4mm), mostly falling on Wed night. Warm (max 22°C on Wed afternoon, min 11°C on Wed night). Winds decreasing (fresh winds from the SSW on Wed afternoon, light winds from the E by Thu night).

Sunday
17
Monday
18
Tuesday
19
Wednesday
20
Thursday
21
Friday
22
Sat
23
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Rating
(10 max)
0
1
0
2
0
0
0
0
0
0
0
0
0
1
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)
1.5
SSW
6
0.9
SSE
8
1
SSW
7
0.9
SSE
8
0.6
SSE
8
0.6
SSE
7
0.6
SSE
8
0.6
SE
9
1
SSW
5
1.7
SSW
6
1.4
SSW
7
1.5
SSW
6
1.1
SSW
6
0.7
S
6
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.7
SE
6
1.2
SE
6
0.1
SE
13
0.1
SE
13
Wave Graph
Metric surfscale
Energy kJ
169
113
85
91
39
37
40
46
53
220
166
172
101
36
27
27
28
31
102
7
7
Wind (km/h)
30
SW
10
WSW
25
SW
5
W
20
E
10
ESE
15
SSW
15
SW
30
SSW
30
SW
25
SW
35
SSW
25
NNW
15
NNE
15
SE
10
E
15
E
15
S
20
E
30
E
25
E
cross
cross-off
cross
glassy
cross-on
on
cross
cross
cross
cross
cross
cross
cross-off
cross-off
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
8:03PM1.28m
8:31AM1.01m
8:54PM1.29m
9:24AM1.00m
9:46PM1.27m
10:19AM0.98m
10:40PM1.22m
11:15AM0.96m
11:36PM1.16m
12:13PM0.94m
00:33AM1.09m
1:13PM0.92m
1:33AM1.01m
2:15PM0.92m
Low Tide
2:01AM-0.09m
2:00PM-0.09m
2:52AM-0.09m
2:50PM-0.07m
3:43AM-0.07m
3:42PM-0.02m
4:36AM-0.03m
4:36PM0.04m
5:33AM0.02m
5:35PM0.11m
6:33AM0.07m
6:41PM0.17m
7:37AM0.11m
7:56PM0.20m
clear
clear
clear
part cloud
part cloud
clear
clear
part cloud
part cloud
clear
part cloud
part cloud
rain showers
clear
clear
part cloud
cloud
cloud
mod rain
light rain
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:31
5:30
5:28
5:28
5:26
5:26
5:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:00
8:01
8:01
8:02
8:04
8:05
8:06
8:07
4
10
5
4
Temp °C
16
21
25
25
16
16
20
22
23
21
20
22
19
14
15
12
13
12
9
9
10
9
20
21
22
12
15
19
22
22
17
17
19
20
11
12
8
9
8
5
3
5
Swell 1
Height (m)
Direction
Period (s)
0.6
SSE
8
0.9
SSE
8
0.8
SSE
8
0.9
SSE
8
0.6
SSE
8
0.6
SSE
7
0.6
SSE
8
0.6
SE
9
0.6
SE
8
0.6
SE
8
0.6
SE
9
0.4
SE
9
1.1
SSW
6
0.7
S
6
0.6
S
6
0.5
S
6
0.4
SE
9
0.6
SE
6
0.3
SE
10
0.1
SE
13
0.1
SE
13
Energy kJ
51
113
80
83
39
37
40
46
45
44
50
29
101
36
27
16
28
19
15
7
7
Swell 2
Height (m)
Direction
Period (s)
0.5
ESE
9
0.9
SSW
7
0.8
SSW
7
0.6
SSW
7
0.4
SSW
6
0.2
E
4
0.1
SE
13
0.1
SE
16
0.1
SE
16
0.1
SE
15
0.1
SE
15
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.2
SSW
6
0.4
SE
9
0.1
SE
13
Energy kJ
44
68
56
34
12
1
7
10
10
9
8
29
28
27
27
3
20
7
Swell 3
Height (m)
Direction
Period (s)
0.3
ESE
8
0.1
S
15
0.4
ENE
4
0.1
SE
13
0.1
SE
15
0.1
SE
14
0.1
SE
14
0.1
SE
14
0.1
SE
14
0.2
SSE
6
0.2
S
5
Energy kJ
14
4
5
7
9
8
8
8
8
3
2
Wind waves
Height (m)
Direction
Period (s)
1.5
SSW
6
1
SSW
7
1.1
SW
6
0.4
E
3
0.4
SSW
6
0.6
S
6
0.8
SSW
5
1
SSW
5
1.7
SSW
6
1.4
SSW
7
1.5
SSW
6
0.3
NNW
2
0.3
NNE
3
0.4
ESE
3
0.4
E
4
0.5
E
4
0.7
SE
6
1.2
SE
6
1.9
ESE
7
1.9
ESE
7
Energy kJ
169
85
91
3
12
22
35
53
220
166
172
1
1
3
6
8
31
102
328
390
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
136
0
80
0
76
715
270
138
310
270
80
138
2
0
715
27
1022
611
310
371
1164
Best forecast wave conditions in Long Island New York
Rating
(10 max)
2
2
1
1
1
1
Best forecast wave conditions in United States
Rating
(10 max)
2
2
2
4
3
1
2
4
2
2
2
3
1
2
1
1
2
2
2
2
2
Header Global
Rating
(10 max)
5
6
7
4
5
4
5
4
4
4
5
8
9
9
9
5
4
4
5
5
4
  • 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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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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