Road K Surf Break

Lat Long: 40.83° N 72.51° W

Road K Surf Forecast and Surf Report

Issued: 7 pm 10 Aug 2026 (local time)

Forecast update in  hr  min

Today's Road K sea temperature is
24.3° C
1.8° 

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 11 Aug 2026:

  • Best quality surf: Monday 17 Aug, 2PM (local time) - 5ft (1.6m), 8s period, S swell with offshore winds.
  • Most powerful swell: Monday 17 Aug, 11AM (local time) - 7ft (2.1m), 8s period, SSW swell with 487 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 11 Aug, 11PM (local time) - 3ft (0.9m), 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 Tuesday (Aug 11) at 11PM. The primary swell is predicted to be 0.9m and 5s period with a secondary swell of 0.6m and 5s. Another secondary swell of 0.2m and 9s 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 2.1m 8s and forecast to arrive on Monday (Aug 17) at 11AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Tuesday (Aug 11) at 2PM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+)11PM (Tue 11th Aug)3ft (0.9m) 5s
Best Surf 2PM (Mon 17th Aug)5ft (1.6m) 8s
Most Powerful11AM (Mon 17th Aug)7ft (2.1m) 8s

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


The Lowdown

Alright, I’m gonna give you the same rundown in feet for those who think in old-school numbers.

Right now, through the early part of the period, there’s not much to get excited about. The first recommendation doesn’t pop up until Monday, 17th August. Before that, we’re looking at a long stretch of days with tiny, weak swell and messy wind. From Tuesday the 11th right through to Sunday the 16th, you’ve got a gap of nearly a week with no real surf on offer. The swell is small – mostly around 1ft to 3ft – and the period is short, so it’s all windswell with barely any energy. Winds are mostly cross or onshore, so it’s choppy and poor. Not worth paddling out.

Now here’s where things get interesting. Monday, 17th August morning is the first standout. The swell jumps to 7ft from the SSW with an 8-second period. Combine that with a cross-offshore wind from the NW, and you’ve got clean conditions. The combined energy is solid at 852 (moderate-to-strong). That’s a bit punchy – over 5ft, so it’s getting into intermediate territory, and at 7ft it’s bordering on expert-only. Still, for those who can handle it, there’ll be some fun, punchy waves. That afternoon, it backs off to 5ft from the S, with a clean offshore wind from the NNW. It’s still good, but the morning session looks like the pick.

After that, it goes quiet again. The 18th and 19th have some long-period swell (12-15 seconds) but the direction is SE, which isn’t ideal for this spot, and the swell height is tiny (1ft to 3ft). Not much to work with.

The next real highlight is Saturday, 22nd August afternoon. A 6ft SSW swell with a 6-second period rolls in, and the wind goes near-calm from the NNE – glassy conditions. The combined energy is 237 (moderate). That’s going to be clean and fun. A little on the small side for experts, but perfect for a wider range of surfers. Crowds are likely here, so get there early.

Then there’s Tuesday, 25th August afternoon – another good one. A 6ft SSW swell with a 6-second period, and the wind is glassy from the WNW. The energy is 272 (moderate). That’s a similar setup to the 22nd: clean, glassy, and fun. If I had to pick the single best session across the whole outlook, it’s this one – that glassy wind on a 6ft swell is a rare treat.

Overall, the best bets are the morning of Monday the 17th for bigger, punchier waves (expert/confident intermediate) and the afternoons of Saturday the 22nd and Tuesday the 25th for clean, glassy conditions that suit a broader crew. The rest of the window is mostly small and unremarkable.

Rusty.

Short Range Forecast

Light rain (total 4mm), mostly falling on Thu morning. Warm (max 27°C on Mon night, min 22°C on Wed morning). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 2mm), mostly falling on Thu night. Warm (max 26°C on Fri afternoon, min 18°C on Sat morning). Winds decreasing (fresh winds from the NNW on Fri night, light winds from the W by Sun morning).

Tuesday
11
Wednesday
12
Thursday
13
Friday
14
Saturday
15
Sunday
16
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
0
0
0
0
1
0
1
1
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)
0.5
S
6
0.6
S
6
0.5
SSW
6
0.7
SSW
5
0.5
S
5
0.4
SSW
5
0.8
SSW
6
0.9
SSW
5
0.6
SSW
5
0.3
SE
9
0.6
S
5
0.5
S
5
0.7
S
8
0.7
S
7
0.7
S
7
0.6
S
7
0.5
S
7
0.5
S
7
2
S
6
Wave Graph
Metric surfscale
Energy kJ
18
23
18
28
15
9
36
42
20
12
16
12
55
53
53
37
23
23
328
Wind (km/h)
20
W
20
WSW
25
SW
20
NNW
10
N
15
SSW
20
SSW
15
S
20
SSW
25
WSW
35
NW
30
NNW
25
NNW
30
NNW
15
NW
15
NW
15
WSW
35
SSW
50
SSW
Wind State
cross-off
cross
cross
off
off
cross-on
cross-on
on
cross-on
cross
off
off
off
off
off
cross-off
cross
cross-on
cross-on
High Tide
6:51AM0.99m
7:14PM1.23m
7:43AM1.05m
8:05PM1.24m
8:32AM1.10m
8:53PM1.22m
9:20AM1.12m
9:40PM1.18m
10:07AM1.12m
10:26PM1.12m
10:53AM1.11m
11:12PM1.04m
Low Tide
00:34AM0.06m
12:27PM0.04m
1:27AM0.01m
1:25PM0.01m
2:12AM-0.02m
2:16PM-0.01m
2:53AM-0.03m
3:03PM0.00m
3:31AM-0.02m
3:47PM0.03m
4:08AM0.02m
4:30PM0.08m
4:45AM0.06m
part cloud
clear
part cloud
thunderstorm
part cloud
clear
part cloud
light rain
cloud
rain showers
clear
clear
clear
clear
part cloud
clear
clear
clear
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:54
5:56
5:56
5:58
5:58
6:00
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:54
7:53
7:52
7:51
7:50
7:47
7:46
 mm
1
3
2
2
Temp °C
27
25
27
26
23
26
25
22
24
25
23
26
23
20
24
25
23
24
25
Feels °C
26
25
28
26
22
24
23
20
24
24
17
20
16
14
21
22
21
21
22
  • 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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