Road K Surf Break

Lat Long: 40.83° N 72.51° W

Road K Surf Forecast and Surf Report

Issued: 7 pm 09 Sep 2026 (local time)

Forecast update in  hr  min

Today's Road K sea temperature is
21.6°C
1.0° 

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 10 Sep 2026:

  • Best quality surf: Thursday 10 Sep, 11PM (local time) - 3.5ft (1.0m), 7s period, SSW swell with offshore winds.
  • Most powerful swell: Thursday 10 Sep, 5AM (local time) - 6.5ft (2.0m), 7s period, SSW swell with 372 kJ wave energy.
  • Next surfable swell (1★+): Thursday 10 Sep, 11PM (local time) - 3.5ft (1.0m), 7s period with SSW 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 Thursday (Sep 10) at 11PM. The primary swell is predicted to be 1.0m and 7s period with a secondary swell of 0.3m and 10s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Road K in the next 16 days are 2.0m 7s and forecast to arrive on Thursday (Sep 10) at 5AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Friday (Sep 11) at 8AM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+)11PM (Thu 10th Sep)3.5ft (1.0m) 7s
Best Surf11PM (Thu 10th Sep)3.5ft (1.0m) 7s
Most Powerful 5AM (Thu 10th Sep)6.5ft (2.0m) 7s

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


The Lowdown

Alright folks, Rusty here. Let’s talk about what we’ve got on the cards for Road K.

Straight up, I gotta be honest with you – this is a tough run. We’re looking at a solid 16-day window, but the opening week is pretty grim. The surf just isn't cooperating.

From the start of the period, we’ve got nothing worth paddling out for. Thursday morning through the weekend is a write-off. You’ve got cross-shore and onshore winds mixing with weak, short-period swell, and the wave state is just messy. The first real glimmer of hope doesn’t show up until Friday the 11th in the morning. The wind swings offshore from the NNW at 9 mph, cleaning things right up. We get a tiny bit of swell at 2 ft from the south, but with a period of just 6 seconds, it’s super weak with a combined energy of only 43. It’s surfable, but you’ll be working for tiny lumps. That afternoon, it goes cross-shore and the energy drops again.

The rest of that weekend and into the next week is the same story – brief offshore windows on Sunday the 13th and Monday the 14th giving us clean, tiny waves, but nothing over 1 ft. After that, we’re back into the wind and chop until the 21st.

Now, things start to look a bit more interesting, but not necessarily good. Around Monday the 22nd of September, we see the swell start to build. By Tuesday the 22nd we’ve got 5 ft from the east, but it’s coming straight in with the wind – cross-onshore and choppy. The combined energy jumps to 242, so there’s power, but it’s messy.

The real stand-out in this whole 16-day stretch, and I mean the only one worth circling on the calendar, is Wednesday the 23rd of September morning. The swell is 5 ft from the ESE, period up to 10 seconds, and the combined energy hits a solid 391 (moderate wave energy). The wind is cross-shore from the east at 16 mph, so it won’t be perfect, but it’s the biggest and most energetic push we see. That 5 ft size puts it in the "not for beginners" zone, and with a 10-second period, it’ll have a bit of shape. This setup could get interesting for the stronger surfers here. The afternoon stays similar but gets a cross-onshore hook, so hit the morning.

Thursday the 24th hangs in there with 4 ft from the same direction, but the energy drops back to 240. By Friday the 25th, it’s dropping out again.

So here’s the bottom line: the first 11 days are flat or weak. It’s not a great run for Road K. The only day that has some proper size and energy is Wednesday the 23rd, and even then the wind isn't ideal. If you’re desperate, you might scratch out a tiny clean wave Friday morning the 11th or Monday the 14th, but don’t get your hopes up. This spot can do better; this forecast is a slow one.

Stay patient, keep watching the charts.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 27°C on Thu afternoon, min 19°C on Sat morning). Winds decreasing (strong winds from the SW on Wed night, calm by Fri night).

Days 5-7 Weather Summary

Heavy rain (total 42mm), heaviest during Sun morning. Warm (max 25°C on Mon afternoon, min 20°C on Sat night). Winds decreasing (fresh winds from the S on Sun morning, light winds from the N by Mon afternoon).

Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
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
1
1
0
1
0
0
0
0
1
1
1
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)
2
SSW
6
1.4
SSW
7
1.4
SW
7
0.9
SSW
7
0.6
S
6
0.6
SSW
7
0.6
S
7
0.3
SE
9
0.3
SE
10
0.4
SE
10
0.8
SSW
6
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.6
SE
9
0.4
SE
9
0.4
SE
9
0.4
SE
9
Wave Graph
Metric surfscale
Energy kJ
312
191
194
77
27
34
32
14
15
24
42
31
29
28
20
61
20
21
21
Wind (km/h)
45
SW
25
WSW
20
SW
20
N
15
NNW
15
SW
10
NNE
10
ESE
15
SSE
10
SE
25
SW
20
NW
15
W
20
N
10
N
20
SE
20
S
25
SSW
25
SSW
Wind State
cross-on
cross
cross
off
off
cross
cross-off
cross-on
on
on
cross-on
off
cross-off
off
off
on
on
cross-on
cross-on
High Tide
7:24AM1.11m
7:45PM1.18m
8:09AM1.16m
8:30PM1.16m
8:53AM1.17m
9:14PM1.12m
9:36AM1.16m
9:57PM1.06m
10:20AM1.13m
10:40PM0.99m
11:03AM1.09m
11:24PM0.92m
Low Tide
1:08AM0.04m
1:19PM0.04m
1:47AM0.01m
2:04PM0.02m
2:22AM0.01m
2:44PM0.02m
2:55AM0.02m
3:22PM0.05m
3:29AM0.05m
3:59PM0.09m
4:04AM0.09m
4:38PM0.14m
4:41AM0.14m
part cloud
part cloud
clear
part cloud
part cloud
clear
clear
clear
part cloud
heavy rain
rain showers
rain showers
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:24
6:26
6:26
6:28
6:28
6:30
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:08
7:07
7:06
7:04
7:02
7:00
6:59
 mm
13
27
2
Temp °C
23
24
27
26
21
23
22
20
22
22
23
23
24
22
25
24
22
22
23
Feels °C
18
22
26
26
18
20
21
19
20
20
23
25
25
19
23
23
21
20
23
  • 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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