Road K Surf Break

Lat Long: 40.83° N 72.51° W

Road K Surf Forecast and Surf Report

Issued: 1 pm 20 Aug 2026 (local time)

Forecast update in  hr  min

Today's Road K sea temperature is
23.6° C
1.6° 

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 20 Aug 2026:

  • Best quality surf: Sunday 23 Aug, 8AM (local time) - 0.5ft (0.2m), 13s period, ESE swell with cross-offshore winds.
  • Most powerful swell: Sunday 23 Aug, 5PM (local time) - 3.5ft (1.1m), 6s period, SSE swell with 97 kJ wave energy.
  • Next surfable swell (1★+): Sunday 23 Aug, 8AM (local time) - 0.5ft (0.2m), 13s period with ESE 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 (Aug 23) at 8AM. The primary swell is predicted to be 0.2m and 13s period with a secondary swell of 0.5m and 5s. Another secondary swell of 0.3m and 7s 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 1.1m 6s and forecast to arrive on Sunday (Aug 23) at 5PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Friday (Aug 21) at 2AM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Sun 23rd Aug)0.5ft (0.2m) 13s
Best Surf 8AM (Sun 23rd Aug)0.5ft (0.2m) 13s
Most Powerful 5PM (Sun 23rd Aug)3.5ft (1.1m) 6s

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 cooking for Road K over the next couple of weeks. I'll be straight with you – this isn't a classic run, but there are a couple of windows if you're patient.

We’re starting off pretty flat and scrappy. From now until around the 23rd of August, the swell is tiny and the wind is mostly junk. You're looking at ankle-to-knee high dribble, mostly onshore or cross-shore, and the water is a touch warmer than usual at 75°. Honestly, it's a write-off for a proper paddle. The combined wave energy is weak, sitting under 100 (27) for the first few days – just not enough oomph. There’s a glimmer on Sunday the 23rd morning with a light offshore from the NNW and a small 2ft SE swell, but it’s barely surfable. The rest of that first week into late August is the same story: small, messy, and frustrating.

The real standout, and the only time I’d genuinely get excited, is the morning of Saturday the 29th of August. The wind goes glassy – dead calm – and we get a 4ft swell from the SSE with a period of 8 seconds. The energy jumps to 165 (moderate), which is the best we’ll see for a while. For a spot that’s very consistent like Road K, a glassy morning with waist-high sets is a golden window. It’ll be clean as a whistle, though expect company – this spot can get crowded when it's good.

After that, it’s back to the doldrums. The end of August and the first couple of days of September are a write-off – tiny, onshore slop.

Then, hold onto your boards, because we’ve got a late-breaking pulse for the experts. On Wednesday the 2nd of September, the swell builds significantly. By the afternoon we’re looking at 5ft from the ESE with an 8-second period, and the energy rockets up to 495 (strong). The problem? The wind is a moderate cross-onshore, making it choppy. The following morning on the 3rd of September sees a cleaner window with a cross-offshore wind from the NNE and 5ft from the ESE (energy 297). By Thursday afternoon and into Friday the 4th of September morning, the stars align briefly: a light offshore NE breeze, clean conditions, and a solid 5-5ft ESE swell. The energy is still strong (322-329). Now, 5ft to 5ft with that period is punchy – this is expert territory. It's going to be powerful and a bit thumping for the average punter.

So, the best on offer? If you just want a clean, fun session, the glassy Saturday the 29th of August is your best bet. For the crew looking for some real power, keep an eye on the 3rd and 4th of September mornings – that’s the real deal, but only if you’ve got the skills.

Stay safe, and I'll catch you down the line.
Rusty.

Short Range Forecast

Heavy rain (total 77mm), heaviest during Thu night. Warm (max 26°C on Thu afternoon, min 17°C on Thu night). Winds decreasing (fresh winds from the NE on Thu night, light winds from the WSW by Sun morning).

Days 5-7 Weather Summary

Light rain (total 3mm), mostly falling on Sun night. Warm (max 24°C on Sun afternoon, min 19°C on Mon night). Wind will be generally light.

Thu
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
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
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)
0.4
SE
7
0.4
SE
8
0.4
SE
8
0.8
E
5
0.9
E
6
0.7
E
5
0.6
E
5
0.2
ESE
13
0.7
SE
6
1.1
SSE
6
0.9
S
6
1
S
6
1.1
SSW
6
0.4
SE
11
0.4
SE
11
0.4
SE
10
0.3
SE
11
0.6
S
5
0.7
SSE
6
0.7
S
7
Wave Graph
Metric surfscale
Energy kJ
12
18
18
32
49
28
18
16
30
97
59
84
96
41
29
28
18
20
33
57
Wind (km/h)
10
SW
25
ENE
25
NE
15
E
20
NE
20
ENE
25
NE
10
WSW
10
NNW
20
SW
20
W
30
W
20
W
15
NW
10
WNW
15
SSW
5
ENE
10
NNE
15
SSW
20
SW
Wind State
cross-on
cross-off
cross-off
cross-on
cross-off
cross
cross-off
cross
off
cross-on
cross-off
cross-off
cross-off
off
cross-off
cross-on
cross
cross-off
cross-on
cross-on
High Tide
2:13PM0.94m
2:38AM0.76m
3:12PM0.92m
3:41AM0.74m
4:11PM0.94m
4:40AM0.76m
5:04PM0.97m
5:32AM0.80m
5:52PM1.01m
6:18AM0.86m
6:36PM1.05m
7:00AM0.91m
7:17PM1.08m
Low Tide
7:48PM0.31m
7:44AM0.26m
8:52PM0.33m
8:39AM0.28m
10:06PM0.32m
9:39AM0.28m
11:16PM0.29m
10:39AM0.26m
00:01AM0.24m
11:35AM0.21m
00:35AM0.18m
12:25PM0.16m
1:08AM0.13m
part cloud
heavy rain
part cloud
clear
part cloud
cloud
heavy rain
heavy rain
thunderstorm
clear
thunderstorm
clear
clear
clear
clear
part cloud
part cloud
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:05
6:05
6:07
6:07
6:09
6:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:40
7:39
7:37
7:37
7:35
7:34
7:31
 mm
24
16
32
5
3
Temp °C
26
22
20
22
22
19
20
22
22
24
23
21
24
23
20
22
22
21
23
23
Feels °C
27
21
17
20
22
18
19
25
25
24
23
17
20
20
18
20
21
19
21
21
  • 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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