Surf Forecasts:
Road K surf forecast from 11 Sep 2026:
- Best quality surf: Sunday 13 Sep, 5PM (local time) - 2.5ft (0.8m), 5s period, SSE swell with offshore winds.
- Most powerful swell: Friday 18 Sep, 8PM (local time) - 4ft (1.2m), 6s period, E swell with 92 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 5PM (local time) - 2.5ft (0.8m), 5s period with SSE 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 13) at 5PM. The primary swell is predicted to be 0.8m and 5s period with a secondary swell of 0.4m and 9s. 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 1.2m 6s and forecast to arrive on Friday (Sep 18) at 8PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 5s period and expected on Tuesday (Sep 15) at 5AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Sun 13th Sep) | 2.5ft (0.8m) 5s |
| Best Surf | 5PM (Sun 13th Sep) | 2.5ft (0.8m) 5s |
| Most Powerful | 8PM (Fri 18th Sep) | 4ft (1.2m) 6s |
Table - best surf conditions forecast for Road K over the next 16 days.
The Lowdown
Alright, Rusty here. Let's look at the only game in town for the next couple of weeks, Road K.
It’s a sandbar, very consistent, which means it tries to catch anything that moves. The water temp is sitting around 71°, which is about a degree and a half warmer than usual for this time of year – nothing crazy, just a little bonus.
Honestly, this is a bleak run. For the first week, from September 11th right through to the 18th, it’s mostly poor. We’ve got tiny, weak stuff and messy cross-shore wind. There’s a bit of a flicker on the 13th, Sunday afternoon. The wind swings offshore from the NNW, cleaning it right up, but the swell is only 3 ft from the SSE with a short 5-second period. It’s surfable, but barely worth paddling out for. The energy is weak (67).
The standout, if you can even call it that, is the afternoon of the 18th, Friday. The swell pushes up to 4 ft from the east, and the combined energy finally cracks three digits at a moderate 104. The wind is offshore from the NE, so it will be clean. It’s still not a great wave, but it’s the best the whole window has to offer.
After that, the 20th (Sunday afternoon) gets glassy but the swell is a pathetic 3 ft. Then the second week gets nasty. From the 21st onward, it's mostly howling onshore trades from the ENE, gusting 25 to 31 mph. The swell on the 23rd (Wednesday) gets a proper kick with energy up to 248, but the wind is a strong, messy cross-shore. For a sandbar with that much wind, you’re looking at a kite session, not a paddle session.
The whole 16-day outlook is pretty grim. There’s no real quality on offer. Even the best day on the 18th is just "a bit less bad." This kind of blank run isn't unusual for an exposed sandbar that needs everything to line up.
Stay tuned, forecasts can change.
Rusty.
Short Range ForecastHeavy rain (total 34mm), heaviest during Sun morning. Warm (max 23°C on Fri afternoon, min 19°C on Fri night). Winds increasing (light winds from the NW on Fri night, fresh winds from the NNW by Mon morning). | Days 5-7 Weather SummaryMostly dry. Warm (max 22°C on Mon afternoon, min 13°C on Tue night). Winds decreasing (fresh winds from the NNE on Mon night, light winds from the E by Wed afternoon). | |||||||||||||||||||
Fri 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | ||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | S 6 | S 6 | SE 9 | SE 10 | SE 10 | SSE 5 | SSE 5 | SE 9 | SE 9 | SE 8 | SE 8 | E 6 | E 6 | E 7 | E 8 | E 8 | E 8 | E 8 | SSW 4 | SW 5 |
Wave Graph  | ||||||||||||||||||||
 kJ | 17 | 19 | 14 | 15 | 34 | 50 | 36 | 29 | 20 | 48 | 18 | 78 | 44 | 66 | 66 | 63 | 48 | 30 | 19 | 51 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | cross-on | on | on | cross | off | cross-on | cross-off | off | cross-off | cross-off | cross | cross-off | cross | cross | cross-on | cross-on | cross-on | cross |
High Tide | 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 | 11:48AM1.03m | 00:11AM0.85m | 12:36PM0.98m | 1:03AM0.79m | |||||||
Low Tide | 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 | 5:21PM0.20m | 5:23AM0.19m | 6:08PM0.26m | |||||||
 |  | |  |  |  |  | |  | | | | | | | | | | | | |
 | — | — | 6:26 | — | — | 6:28 | — | — | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — | 6:31 | — | — |
 | 7:06 | — | — | 7:04 | — | — | 7:02 | — | — | 7:00 | — | — | 6:59 | — | — | 6:58 | — | — | 6:55 | — |
mm | — | — | — | — | 1 | 22 | 4 | 1 | 6 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 22 | 20 | 22 | 22 | 22 | 21 | 23 | 19 | 22 | 22 | 16 | 18 | 17 | 15 | 17 | 17 | 18 | 19 | 22 |
Feels °C | 21 | 20 | 19 | 21 | 21 | 22 | 22 | 25 | 16 | 19 | 20 | 12 | 15 | 13 | 12 | 16 | 16 | 18 | 17 | 21 |
Swell 1 Height (m) Direction Period (s) | S 6 | S 6 | SSW 6 | SE 10 | SE 10 | SSE 5 | SSE 5 | SE 6 | SE 6 | SE 8 | SE 8 | ESE 10 | ESE 9 | E 7 | E 8 | E 8 | E 8 | E 8 | ESE 7 | E 7 |
| kJ | 17 | 19 | 6 | 15 | 34 | 50 | 36 | 24 | 17 | 48 | 18 | 9 | 8 | 66 | 66 | 63 | 48 | 30 | 17 | 8 |
Swell 2 Height (m) Direction Period (s) | SE 10 | ESE 9 | SE 9 | SSW 5 | — | SE 10 | SE 9 | SE 9 | SSW 5 | SSW 5 | SE 6 | S 6 | S 6 | SE 14 | SE 13 | SE 13 | SE 13 | ESE 13 | ESE 12 | ESE 12 |
| kJ | 14 | 8 | 14 | 3 | — | 33 | 31 | 29 | 8 | 6 | 6 | 3 | 1 | 8 | 7 | 7 | 7 | 16 | 15 | 15 |
Swell 3 Height (m) Direction Period (s) | — | SE 11 | SSE 6 | SSE 6 | — | — | — | — | SE 9 | S 6 | S 6 | SE 15 | SE 15 | S 6 | S 5 | — | — | — | ESE 9 | ESE 9 |
| kJ | — | 4 | 4 | 4 | — | — | — | — | 20 | 2 | 3 | 8 | 8 | 1 | 1 | — | — | — | 8 | 8 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | SSE 4 | — | — | SW 3 | NNW 3 | NW 3 | NE 4 | E 6 | E 6 | — | — | — | SSW 2 | SW 3 | SSW 4 | SW 5 |
| kJ | — | — | — | — | 17 | — | — | 6 | 2 | 2 | 29 | 78 | 44 | — | — | — | 1 | 5 | 19 | 51 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 729 | 636 | 1174 | 1175 | 313 | 100 | 0 | 51 | 78 | 0 | 718 | 253 | 1019 | 71 | 71 | 918 | 214 | 291 | 1585 | 336 |
Best forecast wave conditions in Long Island New York | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Road K surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
Nearest