Jetty surfForecast / Long Island NY / USA

information circle12 Day Weather and Surf, issued 6 am Sunday 14 Dec 2025 EST
Forecast update in hr  min  s Forecast update imminent
Jetty surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Jetty sea temperature is
8.5° C
(Which is 1.0°C colder than average for this time of year)


Best Forecast Surf Conditions for Jetty this week:

The surf forecast for Jetty over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Dec 18) at 1AM. The primary swell is predicted to be 0.9m and 7s period with a secondary swell of 0.3m and 10s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Jetty in the next 12 days are 3.5m 9s and forecast to arrive on Friday (Dec 19) at 7AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.8m 6s period and expected on Friday (Dec 19) at 10AM.

Wave TypeTime (EST) & Date Wave Height & Period
Next good surf (1 star+) 1AM (Thu 18th Dec)3ft (0.9m) 7s
Best Surf 1AM (Thu 18th Dec)3ft (0.9m) 7s
Most Powerful 7AM (Fri 19th Dec)11ft (3.5m) 9s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast A dusting of new snow. Icy conditions (max 6°C on Tue night, min -8°C on Sun night). Winds decreasing (strong winds from the NNW on Sun night, light winds from the W by Tue morning).

Days 3-6 Weather Summary Moderate rain (total 11mm), heaviest on Fri morning. Icy conditions (max 14°C on Thu night, min -4°C on Fri night). Winds increasing (calm on Wed night, gales from the SSW by Thu night).

Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
1
0
0
1
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.4
S
0.4
SSE
0.4
SE
0.3
S
0.3
SE
0.7
WSW
0.3
SE
0.3
SE
0.3
SE
1.1
SSW
1.3
SSW
0.9
SSW
0.7
S
0.9
S
2.5
S
2.5
S
1.8
S
1.2
S
0.8
SSE
0.8
SSE
1.5
S
Period(s) (?)6799105111110677777999986
Wave
Graph
(?)Metric surfscale
Energy kJ (?)918231616251918178013466487665311485532469976176
Wind
(km/h)
25
N
35
NW
45
NNW
30
NW
30
WNW
30
W
15
WNW
20
WSW
30
WSW
40
SW
40
WSW
15
WNW
15
S
25
SSE
55
S
35
W
55
WNW
30
WNW
10
NNW
15
S
40
SSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offoffoffcross-
off
cross-
off
cross-
off
cross-
off
cross-
off
crosscrosscrosscross-
off
ononcross-
on
cross-
off
cross-
off
cross-
off
offoncross-
on
High Tide
/ height (m)
3:23PM
0.73
3:54AM
0.87
4:13PM
0.72
4:39AM
0.91
4:59PM
0.72
5:21AM
0.94
5:42PM
0.73
6:02AM
0.96
6:25PM
0.73
6:42AM
0.98
7:07PM
0.74
7:23AM
0.99
7:50PM
0.74
Low Tide
/ height (m)
8:52PM
0.11
10:20AM
0.15
9:34PM
0.10
11:06AM
0.12
10:17PM
0.08
11:40AM
0.09
10:59PM
0.06
12:11PM
0.05
11:40PM
0.04
12:42PM
0.02
12:22AM
0.02
1:16PM
-0.01
1:02AM
-0.00
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunrise7:05--7:07--7:07--7:07--7:09--7:09--7:09--
Sunset-4:22--4:22--4:23--4:23--4:23--4:24--4:24-
light snow
part cloud
clear
part cloud
cloud
part cloud
clear
part cloud
part cloud
part cloud
clear
part cloud
clear
part cloud
rain showers
rain showers
clear
part cloud
part cloud
part cloud
part cloud
Rain (mm)
--------------110-----
Temp. °C0-2-5-4-2-2-2-166658111494-2-238
Feels °C (?)-7-12-17-13-10-10-7-8-3-4-313530-9-13-6-5-1
  • 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

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Information about the Jetty Surf forecast

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

Jetty is 15 km (9 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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