Road K surfForecast / Long Island NY / USA

information circle16 Day Weather and Surf, issued 1 pm Tuesday 24 Mar 2026 EDT
Forecast update in hr  min  s Forecast update imminent
Road K surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Road K sea temperature is
3.7° C
(Which is 1.5°C colder than average for this time of year)

Best Forecast Surf Conditions for Road K this week:

The surf forecast for Road K over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Mar 25) at 11AM. The primary swell is predicted to be 0.4m and 9s period with a secondary swell of 0.2m and 8s. Another secondary swell of 0.5m and 4s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Road K in the next 16 days are 2.5m 7s and forecast to arrive on Monday (Mar 30) at 5PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Friday (Mar 27) at 11AM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+)11AM (Wed 25th Mar)1.5ft (0.4m) 9s
Best Surf 8AM (Fri 27th Mar)7ft (2.2m) 7s
Most Powerful 5PM (Mon 30th Mar)8ft (2.5m) 7s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast Moderate rain (total 10mm), heaviest on Thu night. Mild temperatures (max 9°C on Wed night, min 3°C on Tue night). Winds increasing (calm on Tue afternoon, strong winds from the SW by Thu night).

Days 3-6 Weather Summary Mostly dry. Icy conditions (max 7°C on Fri afternoon, min -2°C on Sat morning). Winds increasing (light winds from the NE on Fri afternoon, fresh winds from the SSW by Mon morning).

Tue
24
Wednesday
25
Thursday
26
Friday
27
Saturday
28
Sunday
29
Monday
30
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
0
1
0
0
0
0
0
1
1
0
1
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.6
E
0.5
E
0.4
E
0.3
E
0.9
SSW
1.7
SSW
2.1
SSW
2.4
SSW
1.5
S
1.2
S
0.9
S
0.6
S
0.5
S
0.3
ESE
0.3
ESE
0.2
ESE
0.9
SW
1.8
SSW
2.5
SSW
2
SSW
1.2
SSW
Period(s) (?)101091046677777788846787
Wave
Graph
(?)Metric surfscale
Energy kJ (?)65452817261683416102381598637231212726197758447151
Wind
(km/h)
25
SSW
35
SW
15
W
25
SSW
25
SSW
40
SSW
35
SW
35
SW
30
NNW
10
NE
20
NE
15
NNW
15
WSW
20
WNW
30
NW
10
W
15
SW
35
SSW
50
SSW
50
SW
35
SW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
crosscross-
off
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
offcross-
off
cross-
off
offcrosscross-
off
cross-
off
cross-
off
crosscross-
on
cross-
on
cross-
on
cross
High Tide
/ height (m)
1:06AM
1.02
1:41PM
0.78
2:13AM
0.98
2:52PM
0.77
3:22AM
0.96
4:02PM
0.80
4:28AM
0.97
5:04PM
0.86
5:27AM
0.99
5:57PM
0.93
6:18AM
1.01
6:43PM
0.99
7:03AM
1.01
Low Tide
/ height (m)
5:58PM
0.02
6:55AM
0.08
6:59PM
0.09
8:07AM
0.12
8:09PM
0.13
9:32AM
0.13
9:29PM
0.15
10:54AM
0.11
10:55PM
0.13
11:53AM
0.07
12:04AM
0.08
12:37PM
0.04
12:54AM
0.04
1:11PM
0.02
Tue
24
Wednesday
25
Thursday
26
Friday
27
Saturday
28
Sunday
29
Monday
30
Sunrise--6:45--6:43--6:41--6:39--6:39--6:37--6:35
Sunset7:05--7:06--7:07--7:08--7:09--7:10--7:12--
clear
part cloud
cloud
cloud
cloud
part cloud
part cloud
light rain
light rain
cloud
cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
cloud
rain showers
light rain
Rain (mm)
-------55----------11
Temp. °C44459999975-1441565689
Feels °C (?)1-3-202111541-7-2-4-9-11-2-4-30
  • 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 Road K Surf forecast

The above surf forecast table for Road K provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Road K can be found by selecting the local surf guide option on the grey menu. Our Road K 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 (Road K) 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 Road K 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.

Road K is 28 km (17 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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