Road K Surf Break

Lat Long: 40.83° N 72.51° W

Road K Surf Forecast and Surf Report

Issued: 1 pm 15 Sep 2026 (local time)

Forecast update in  hr  min

Today's Road K sea temperature is
21.4°C
1.3° 

Road K surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Road K surf forecast from 15 Sep 2026:

  • Best quality surf: Friday 18 Sep, 8AM (local time) - 2.5ft (0.7m), 5s period, SW swell with cross-offshore winds.
  • Most powerful swell: Tuesday 22 Sep, 8PM (local time) - 5ft (1.6m), 7s period, E swell with 267 kJ wave energy.
  • Next surfable swell (1★+): Friday 18 Sep, 8AM (local time) - 2.5ft (0.7m), 5s period with SW swell.

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 Friday (Sep 18) at 8AM. The primary swell is predicted to be 0.7m and 5s period with a secondary swell of 0.3m and 7s. 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 1.6m 7s and forecast to arrive on Tuesday (Sep 22) at 8PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Monday (Sep 21) at 2PM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Fri 18th Sep)2.5ft (0.7m) 5s
Best Surf 8AM (Fri 18th Sep)2.5ft (0.7m) 5s
Most Powerful 8PM (Tue 22nd Sep)5ft (1.6m) 7s

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


The Lowdown

Alright, Rusty here, and we’ve got a long look at Road K. The next 16 days are a tough watch, to be honest. There are a couple of windows where the ocean tries to offer something, but you're going to need to be patient. Let's break it down.

Right out of the gate, the water is 71°, which feels a touch warmer than normal for this time of year, so that’s a plus.

The first week is a real struggle. From the 15th through the 17th, we’ve got tiny waves, all under 2 ft, with onshore or cross-shore winds messing them up. Forget the board, it’s not worth the drive.

The 18th sees a slight shift. Early Friday morning, a bit of clean, offshore wind from the NNW kicks in, and we get a swell of 2 ft. It’s short period at 5 seconds, so it’s bumpy and weak, with combined energy at 45. It’s surfable, but only just. You’ll be scratching for something to ride.

Saturday the 19th picks up a little more height, hitting 4 ft on the morning, but the wind swings cross-shore and it gets messy quick. Combined energy is moderate though, hitting 120, so there’s a push there, but the conditions are poor.

From the 20th through the 26th, it’s a long stretch of onshore, rainy, and often windy days. Swell sizes bounce from 3 ft to nearly 7 ft, and for a few days there’s some moderate to strong wave energy (146 to 397), but with the wind howling out of the SE and SSE, it’s choppy, lumpy, and ugly. Thursday the 24th has the highest energy at 6 ft and 397, but with onshore winds and rain, this is seriously rough. If you’re into kite surfing, this window might get you excited, but for paddle surfing, it’s a hard pass.

The best bet in the whole forecast lands on the 27th and 28th. Sunday the 27th starts with a light offshore breeze from the NW, clean conditions, and a 3 ft swell from the ESE at 8 seconds. Combined energy is 149, so there’s some life. It’s not pumping, but with the wind offshore, you’ll get some clean, rideable lines. If I had to pick one standout, it’s Sunday morning the 27th—small but clean is better than big and blown out.

Monday the 28th holds similar promise: clean offshore winds from the N, a bit more size at 3 ft, and a longer period of 10 to 11 seconds, which actually gives the waves some shape and power. Combined energy hits 201 and 214. This is the best combination of size, wind, and period in the whole run. A long-period swell like that means longer waits between sets, but when they come, they’ll have some push. For this spot, that’s a solid, fun session.

After that, the 29th has a brief window of cross-offshore wind and a 5 ft ENE swell with 441 combined energy on the afternoon, but the period drops to 7 seconds, so it’s less organized. Then the final days of the forecast drop right back off into tiny, high-wind junk.

So, bottom line: the first week is a dud. The 27th and 28th are your real windows, with Monday the 28th morning being the best overall—clean offshore wind, about 3 ft of swell with good period. Don’t expect it to be epic, but for Road K, it’s the most fun you’re gonna get in this run.

Rusty

Short Range Forecast

Mostly dry. Warm (max 22°C on Thu morning, min 16°C on Tue afternoon). Winds increasing (light winds from the WSW on Tue night, fresh winds from the SW by Thu night).

Days 5-7 Weather Summary

Heavy rain (total 43mm), heaviest during Sun morning. Warm (max 25°C on Fri afternoon, min 15°C on Fri night). Winds decreasing (fresh winds from the SSE on Sun afternoon, calm by Sun night).

Tue
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.3
SE
9
0.3
SE
9
0.3
SE
9
0.2
ESE
9
0.4
ESE
7
0.4
ESE
7
0.4
E
7
0.9
SW
5
0.7
SSW
5
0.3
SE
12
0.3
SE
12
1.2
E
6
1
E
6
0.8
ESE
7
0.3
SE
11
1.4
S
5
0.4
SE
9
1.3
ENE
5
1.6
ENE
6
1.3
ENE
7
Wave Graph
Metric surfscale
Energy kJ
13
13
13
8
18
18
17
31
21
22
21
92
81
61
19
113
27
75
210
152
Wind (km/h)
10
SE
10
S
15
SW
15
SW
15
WSW
15
SW
25
SSW
30
SW
25
NNW
20
NNW
30
NE
20
ENE
15
ESE
20
SE
30
SE
30
SSE
10
SW
25
NNE
30
N
25
NNE
Wind State
cross-on
cross-on
cross-on
cross
cross
cross-on
cross-on
cross
off
off
cross-off
cross
cross-on
cross-on
on
on
cross-on
cross-off
cross-off
cross-off
High Tide
11:24PM0.92m
11:48AM1.03m
00:11AM0.85m
12:36PM0.98m
1:03AM0.79m
1:31PM0.93m
2:03AM0.75m
2:31PM0.90m
3:07AM0.74m
3:33PM0.90m
4:08AM0.77m
4:30PM0.93m
Low Tide
4:38PM0.14m
4:41AM0.14m
5:21PM0.20m
5:23AM0.19m
6:08PM0.26m
6:10AM0.25m
7:02PM0.30m
7:03AM0.29m
8:03PM0.32m
8:04AM0.31m
9:09PM0.31m
9:07AM0.30m
10:11PM0.28m
clear
clear
part cloud
part cloud
clear
clear
clear
part cloud
part cloud
clear
part cloud
part cloud
cloud
light rain
heavy rain
heavy rain
heavy rain
light rain
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:31
6:31
6:33
6:33
6:35
6:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:59
6:58
6:55
6:53
6:52
6:51
6:49
 mm
1
18
11
12
1
Temp °C
17
17
18
20
21
22
22
22
22
25
22
15
16
17
17
19
21
19
17
16
Feels °C
16
16
17
18
20
22
20
20
23
23
17
11
13
14
14
16
23
19
14
13
  • Map Icons:
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  • 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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