Road K Surf Break

Lat Long: 40.83° N 72.51° W

Road K Surf Forecast and Surf Report

Issued: 1 pm 05 Sep 2026 (local time)

Forecast update in  hr  min

Today's Road K sea temperature is
21.4°C
0.6° 

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 6 Sep 2026:

  • Best quality surf: Sunday 6 Sep, 5PM (local time) - 2.5ft (0.7m), 6s period, E swell with glassy winds.
  • Most powerful swell: Thursday 10 Sep, 5AM (local time) - 7ft (2.1m), 7s period, SSW swell with 452 kJ wave energy.
  • Next surfable swell (1★+): Sunday 6 Sep, 5PM (local time) - 2.5ft (0.7m), 6s period with E 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 Sunday (Sep 06) at 5PM. The primary swell is predicted to be 0.7m and 6s period with a secondary swell of 0.3m and 9s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Road K in the next 16 days are 2.1m 7s and forecast to arrive on Thursday (Sep 10) at 5AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 5s period and expected on Friday (Sep 11) at 8PM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+) 5PM (Sun 6th Sep)2.5ft (0.7m) 6s
Best Surf 5PM (Sun 6th Sep)2.5ft (0.7m) 6s
Most Powerful 5AM (Thu 10th Sep)7ft (2.1m) 7s

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


The Lowdown

Alright folks, Rusty here. Let’s have a look at what’s happening for Road K over the next sixteen days.

The outlook is lean. There’s a long stretch of small, choppy, and wind-affected surf through the first week and a half, with only a few brief windows of half-decent conditions. The standout is a late burst of energy around the 17th, but it comes with a major caveat. For the most part, it’s a waiting game, but there’s a glimmer of something promising if you’re patient.

The water temp is sitting at 71°F, which is about average for this time of year, so nothing special there.

We kick off the period on Saturday the 5th of September with a tiny 1ft SE swell. The wind is offshore from the NNW, but it’s so small it’s hardly worth paddling out. The energy is weak (20). Sunday the 6th brings a bit more size with a 3ft ENE swell in the morning, but the cross-shore wind makes it messy. The afternoon goes glassy, but the swell drops back to 2ft, and the energy is still low (51). Not much to get excited about.

Monday the 7th is clean in the morning with a light offshore and a 1ft E swell, but it’s tiny. This theme of small, clean but weak surf continues through Tuesday the 8th and Wednesday the 9th. Wednesday afternoon sees a jump in wind strength with a fresh cross-onshore, and the swell gets bumpy at 4ft, but the quality is poor.

Thursday the 10th is the first day with some real push. The swell builds to 6ft from the SSW, but a fresh cross-shore wind creates a lumpy cross-chop. The energy is moderate (339), but the wind ruins it. This continues into Friday the 11th with a cleaner 3ft S swell, but it’s still small. A few of these days have surfable waves, but nothing worth calling a session.

From Saturday the 12th right through to Wednesday the 16th, it’s a run of small, weak, and mostly choppy conditions. Swells hover around 1ft to 3ft, energy is low, and the wind is rarely your friend. You’d be fighting the wind more than the wave.

Now, here’s the interesting part. On Thursday the 17th of September, the swell story changes. The forecast shows a 10ft E swell rolling in with a period of 8 seconds. The energy rockets up to 1020 in the morning and 1141 in the afternoon. That’s a strong pulse of energy. The wind is a cross-shore in the morning, turning to a cross-offshore in the afternoon. This is the best window of the entire forecast. For experienced surfers, this is the one to watch. The afternoon session on the 17th looks clean, with a solid 10ft wall of E swell. This is a proper groundswell-sized event, but remember, a period of 8 seconds means it’s windswell, so it’ll be a bit raw and lumpy. Still, it’s the only window with real power.

Friday the 18th sees the swell drop but still holds at 8ft, but the wind shifts back to an onshore direction, making it messy. The tail end of the period from Saturday the 19th into Sunday the 20th fades back to small, weak, and wind-affected surf.

The only real standout in this entire 16-day window is the afternoon of Thursday the 17th. It’s a big, powerful swell with clean conditions, but it’s a short-period windswell and only for the experienced. The rest of the time, it’s small and choppy. If you’re a kite surfer, the strong winds and lumpy conditions on the 9th, 10th, and 18th might be more interesting than paddle surfing.

Stay patient, and keep an eye on that 17th.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Sat night. Warm (max 24°C on Mon afternoon, min 17°C on Sun morning). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 4mm), mostly falling on Thu night. Warm (max 26°C on Thu night, min 20°C on Fri morning). Winds increasing (light winds from the N on Tue afternoon, strong winds from the SSW by Wed night).

Sat
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
Friday
11
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
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
1
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
8
1
E
5
0.8
ENE
5
0.7
E
6
0.4
E
8
0.4
E
10
0.3
E
10
0.3
E
10
0.3
E
9
0.3
SE
9
0.3
SE
9
0.6
SW
4
1.3
SSW
5
2.1
SSW
7
1.8
SSW
7
1.6
SSW
7
1.2
S
7
0.9
S
7
0.9
S
7
0.6
S
7
Wave Graph
Metric surfscale
Energy kJ
10
53
28
35
20
32
17
17
16
12
12
12
95
384
325
251
142
70
86
32
Wind (km/h)
15
NNW
20
ENE
20
ENE
5
ESE
15
NNW
20
NW
10
SW
15
WNW
15
NW
10
S
15
SSW
25
SSW
35
SSW
45
SW
30
SW
30
SSW
15
SW
20
NW
20
NNW
25
NNE
Wind State
off
cross
cross
glassy
off
off
cross
cross-off
off
on
cross-on
cross-on
cross-on
cross-on
cross
cross-on
cross
cross-off
off
cross-off
High Tide
3:04PM1.06m
3:39AM0.85m
4:11PM1.08m
4:45AM0.90m
5:12PM1.12m
5:44AM0.98m
6:07PM1.15m
6:35AM1.05m
6:58PM1.18m
7:24AM1.11m
7:45PM1.18m
8:09AM1.16m
8:30PM1.16m
Low Tide
8:52PM0.20m
8:55AM0.17m
10:10PM0.18m
10:09AM0.16m
11:24PM0.13m
11:22AM0.12m
00:22AM0.08m
12:27PM0.07m
1:08AM0.04m
1:19PM0.04m
1:47AM0.01m
2:04PM0.02m
2:22AM0.01m
part cloud
rain showers
part cloud
clear
clear
clear
clear
part cloud
part cloud
clear
clear
cloud
part cloud
clear
part cloud
part cloud
thunderstorm
clear
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:20
6:22
6:22
6:24
6:24
6:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:15
7:14
7:13
7:10
7:08
7:07
7:06
 mm
1
4
Temp °C
23
21
18
18
20
20
24
24
21
23
23
22
23
23
24
24
26
21
23
21
Feels °C
23
18
15
18
18
16
21
21
19
22
21
21
20
18
21
21
22
18
20
15
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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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