Road K Surf Break

Lat Long: 40.83° N 72.51° W

Road K Surf Forecast and Surf Report

Issued: 7 pm 24 Aug 2026 (local time)

Forecast update in  hr  min

Today's Road K sea temperature is
22.9°C
1.2° 

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 25 Aug 2026:

  • Best quality surf: Tuesday 25 Aug, 11PM (local time) - 1.5ft (0.4m), 11s period, SE swell with cross-offshore winds.
  • Most powerful swell: Friday 28 Aug, 2PM (local time) - 2.5ft (0.8m), 8s period, SE swell with 84 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 25 Aug, 11PM (local time) - 1.5ft (0.4m), 11s period with SE 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 25) at 11PM. The primary swell is predicted to be 0.4m and 11s period with a secondary swell of 0.7m and 5s. Another secondary swell of 0.8m and 5s 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 0.8m 8s and forecast to arrive on Friday (Aug 28) at 2PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 3s period and expected on Tuesday (Aug 25) at 11AM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+)11PM (Tue 25th Aug)1.5ft (0.4m) 11s
Best Surf11PM (Tue 25th Aug)1.5ft (0.4m) 11s
Most Powerful 2PM (Fri 28th Aug)2.5ft (0.8m) 8s

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


The Lowdown

Alright, this is Rusty. Let’s talk about the waves at Road K.

Right off the bat, the first week and a half is a bit of a grind. We’re looking at small, weak swell from the southeast and mostly cross or cross-off winds. Honestly, from Tuesday the 25th of August right through to the end of the month, it’s pretty flat and messy. There’s hardly any energy to work with – most days the combined swell energy sits around the 50 to 80 mark (weak). You’ll see tiny 1ft to 2ft waves, short periods, and a lot of chop. Not worth paddling out for.

There is a slight tease on Saturday the 29th of August morning, with a clean offshore wind from the north and some 2ft swell. The afternoon actually goes glassy with zero wind, which is rare – but even then, the waves are just too small to get excited about. That’s about as good as it gets for that first stretch.

Then we hit a real gap. From Sunday the 30th of August all the way through to Wednesday the 2nd of September, the surf stays weak and poor. There’s a small window on Tuesday the 1st and Wednesday the 2nd, where we get moderate offshore winds from the northwest, and the swell period stretches out to 13-15 seconds. That’s proper groundswell potential, but the height is only 1ft to 2ft, so it’s more of a longboard glide than anything punchy. Energy picks up a bit – hitting 132 (moderate) on the Wednesday – but the size just isn’t there.

Now, here’s where it gets interesting. Thursday the 3rd of September is the standout. Morning brings a clean, moderate offshore breeze from the north-northeast, and the swell jumps to 7ft from the east with an 8-second period. Combined swell energy is 623 (strong). That’s proper, solid surf – but with that period, it’s going to be a bit dumpy and better suited for experienced surfers. It’s too big for beginners for sure. The wind is clean, the waves are there, and that morning session looks like the best on offer in the whole 16-day run. The afternoon turns onshore, so don’t sleep on the early.

Friday the 4th of September still has some size – 6ft from the east early, but the wind is light cross-onshore and the energy is huge (878 at one point). However, conditions are questionable, with some rain around and a bit of onshore bump. Not the clean choice, but there’s still power.

After that, from Saturday the 5th of September onward, the swell fades and the wind turns messy again. The energy drops, the period gets shorter, and it’s back to small, choppy leftovers. By the second week, it’s pretty much a write-off – small waves, onshore winds, and not much to chase.

So, for the whole outlook: the best window is the morning of Thursday the 3rd of September. That’s the one to circle. Everything else is either tiny or blown out. Keep an eye on the forecasts, because if that east swell holds and the wind stays, it could be a proper session. But for now, it’s a long wait with one solid day on the horizon.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Thu afternoon. Warm (max 24°C on Mon night, min 19°C on Wed morning). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 9mm), mostly falling on Fri morning. Warm (max 25°C on Fri morning, min 18°C on Sat morning). Winds decreasing (fresh winds from the S on Thu night, calm by Sat afternoon).

Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
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
0
0
0
0
0
0
0
1
1
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)
0.4
SE
11
0.4
SE
11
0.4
SE
10
0.4
SE
11
0.5
SE
9
0.7
SE
8
0.7
SE
8
0.7
SE
8
0.7
SE
9
0.7
SE
8
1
S
6
0.8
SE
8
0.8
S
6
0.6
SE
8
0.6
SE
8
0.6
S
6
0.5
SE
8
0.5
SE
8
0.4
SE
8
Wave Graph
Metric surfscale
Energy kJ
30
29
28
29
40
70
74
72
77
74
72
82
53
46
39
24
34
33
21
Wind (km/h)
20
WNW
20
W
25
WSW
15
NNW
10
WNW
15
SSW
20
SSW
25
S
25
S
25
S
10
SW
15
SW
30
NNW
20
N
0
WNW
10
WSW
15
SSW
25
SSW
30
SSW
Wind State
cross-off
cross-off
cross
off
cross-off
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
off
off
glassy
cross
cross-on
cross-on
cross-on
High Tide
6:18AM0.86m
6:36PM1.05m
7:00AM0.91m
7:17PM1.08m
7:40AM0.97m
7:58PM1.10m
8:20AM1.02m
8:38PM1.10m
9:00AM1.07m
9:18PM1.09m
9:41AM1.10m
9:59PM1.07m
Low Tide
00:01AM0.24m
11:35AM0.21m
00:35AM0.18m
12:25PM0.16m
1:08AM0.13m
1:09PM0.11m
1:42AM0.08m
1:51PM0.06m
2:17AM0.03m
2:33PM0.03m
2:54AM0.00m
3:15PM0.02m
3:32AM-0.01m
clear
clear
part cloud
clear
clear
part cloud
clear
part cloud
light rain
thunderstorm
thunderstorm
light rain
thunderstorm
clear
clear
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:09
6:09
6:11
6:11
6:13
6:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:35
7:34
7:31
7:30
7:29
7:27
7:25
 mm
1
3
3
1
2
Temp °C
24
22
24
23
21
23
23
23
24
24
25
25
25
19
23
23
22
23
23
Feels °C
22
20
21
21
20
22
21
22
22
22
26
26
27
16
22
21
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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