
Surf Forecasts:
Road K surf forecast from 14 Sep 2026:
- Best quality surf: Friday 18 Sep, 8AM (local time) - 1ft (0.3m), 12s period, SE swell with cross-offshore winds.
- Most powerful swell: Monday 21 Sep, 2PM (local time) - 6ft (1.8m), 7s period, E swell with 277 kJ wave energy.
- Next surfable swell (1★+): Friday 18 Sep, 8AM (local time) - 1ft (0.3m), 12s 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 Friday (Sep 18) at 8AM. The primary swell is predicted to be 0.3m and 12s period with a secondary swell of 0.4m and 6s. Another secondary swell of 0.6m and 4s 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 1.8m 7s and forecast to arrive on Monday (Sep 21) 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 0.8m 5s period and expected on Tuesday (Sep 15) at 5AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Fri 18th Sep) | 1ft (0.3m) 12s |
| Best Surf | 8AM (Fri 18th Sep) | 1ft (0.3m) 12s |
| Most Powerful | 2PM (Mon 21st Sep) | 6ft (1.8m) 7s |
Table - best surf conditions forecast for Road K over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's talk about what's on the menu for the next couple of weeks.
First up, I gotta be straight with you: this is a tough stretch. We've got a long, dry spell on our hands. For a solid five days, from Monday the 14th right through to Friday the 18th of September, you’d be better off waxing your board and staring at it than trying to paddle out. The wave energy is barely registering (50), with tiny 1ft SE windswell and a fresh northerly breeze making things messy. The water is sitting at about 71°, which is a touch warmer than usual for this time of year, but that's the only good news.
Things start to look a little less bleak on Friday the 18th. The morning is still tiny at 1ft from the ESE, but it's clean with a light offshore breeze. The afternoon is the first real tease of the whole outlook: 1.0ft of long-period SE swell (12 seconds) and a glassy surface. It’s small, sure, but that's as good as it gets for a while. This is a true beginner zone (Road K), and for a total rookie, you could get a couple of rides. The combined energy is still weak (42).
Then, we get another big gap. Saturday the 19th and Sunday the 20th are basically write-offs again with messy onshore winds. The swell does show a pulse on Sunday morning with 3ft from the SSW (106), but the winds are all wrong.
The real story here is the middle of the second week. Monday the 21st through to Wednesday the 23rd of September sees a solid swell pulse. We’re looking at 6ft to 7ft of ESE swell. The combined wave energy jumps into the strong category (545 on Wednesday morning). But here's the heartbreaker: it's accompanied by onshore and cross-shore winds, making for choppy, lumpy, poor conditions. At this size, it's too much for beginners anyway, but with the wind, it’s a total mess for everyone. A setup like this, with that much wind and power, starts looking a lot more interesting for kite surfing than paddle surfing, to be honest.
Thursday the 24th offers a brief moment of hope in the afternoon. The swell drops to a more manageable 5ft from the ESE, the wind swings light, and conditions clean up a little. The energy is still strong (326), but it's a marginal window.
The very end of the outlook, on Monday the 28th of September, offers another small window. We get 3ft of SE swell with a light offshore wind in the morning, turning glassy by the afternoon. The energy is moderate (141). It's not a standout by any stretch, but it's clean.
Honestly, the best you can hope for are those glassy windows on the 18th afternoon and the 28th. The big swell in the middle of the run is a classic case of "if only the wind was right." Keep an eye on it, but don't hold your breath.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Mon afternoon, min 15°C on Tue morning). Winds decreasing (fresh winds from the NNW on Mon morning, light winds from the S by Tue night). | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Fri night. Warm (max 26°C on Fri afternoon, min 20°C on Thu morning). Winds increasing (calm on Fri afternoon, fresh winds from the SW by Sat night). | ||||||||||||||||||||
Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | |||||||||||||||
AM | 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) | SE 9 | SE 9 | ESE 8 | ENE 5 | E 5 | ESE 5 | ESE 5 | ESE 7 | ESE 8 | E 8 | E 7 | ESE 7 | ESE 6 | SE 12 | SE 12 | SE 12 | SE 9 | SSW 4 | SSW 6 | SSW 6 | ENE 6 |
Wave Graph | |||||||||||||||||||||
28 | 27 | 28 | 37 | 21 | 8 | 8 | 10 | 40 | 29 | 28 | 15 | 14 | 22 | 21 | 21 | 20 | 39 | 60 | 50 | 135 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-off | cross | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross | off | glassy | on | cross-on | on | cross-on | cross-off | cross-off | cross-off |
High Tide | 10:20AM1.13m | 10:40PM0.99m | 11:03AM1.09m | 11:24PM0.92m | 11:48AM1.03m | 00:11AM0.85m | 12:36PM0.98m | 1:03AM0.79m | 1:31PM0.93m | 2:03AM0.75m | 2:31PM0.90m | 3:07AM0.74m | 3:33PM0.90m | 4:08AM0.77m | |||||||
Low Tide | 3:59PM0.09m | 4:04AM0.09m | 4:38PM0.14m | 4:41AM0.14m | 5:21PM0.20m | 5:23AM0.19m | 6:08PM0.26m | 6:10AM0.25m | 7:02PM0.30m | 7:03AM0.29m | 8:03PM0.32m | 8:04AM0.31m | 9:09PM0.31m | ||||||||
6:28 | — | — | 6:30 | — | — | 6:31 | — | — | 6:31 | — | — | 6:33 | — | — | 6:33 | — | — | 6:35 | — | — | |
— | 7:00 | — | — | 6:59 | — | — | 6:58 | — | — | 6:55 | — | — | 6:53 | — | — | 6:52 | — | — | 6:51 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | 2 | 2 | — | — |
Temp °C | 20 | 22 | 21 | 15 | 17 | 16 | 17 | 19 | 21 | 21 | 21 | 22 | 23 | 26 | 25 | 20 | 22 | 22 | 22 | 18 | 18 |
Feels °C | 13 | 16 | 14 | 12 | 15 | 14 | 17 | 17 | 21 | 21 | 19 | 20 | 24 | 27 | 26 | 17 | 20 | 20 | 23 | 16 | 16 |
Swell 1 Height (m) Direction Period (s) | S 6 | SE 9 | ESE 8 | SE 9 | SE 9 | ESE 5 | ESE 5 | ESE 5 | ESE 8 | E 8 | E 7 | ESE 7 | ESE 6 | ESE 6 | ESE 7 | ESE 6 | SE 9 | SE 11 | SSW 6 | SSW 6 | S 6 |
17 | 27 | 28 | 21 | 13 | 7 | 8 | 10 | 40 | 29 | 28 | 15 | 14 | 8 | 9 | 8 | 20 | 19 | 60 | 50 | 18 | |
Swell 2 Height (m) Direction Period (s) | SE 9 | S 6 | S 6 | S 6 | S 6 | ESE 9 | ESE 9 | ESE 7 | SE 13 | SE 13 | ESE 12 | ESE 12 | ESE 12 | SE 12 | SE 12 | SE 9 | ESE 11 | ESE 7 | ESE 11 | SE 11 | SE 10 |
28 | 10 | 7 | 3 | 1 | 8 | 8 | 10 | 7 | 25 | 15 | 15 | 14 | 22 | 21 | 12 | 13 | 10 | 46 | 18 | 17 | |
Swell 3 Height (m) Direction Period (s) | SE 6 | — | SE 15 | S 7 | S 6 | E 7 | SE 13 | SE 10 | — | — | ESE 9 | ESE 9 | ESE 9 | ESE 9 | SE 9 | SE 12 | E 7 | — | — | SE 8 | SE 8 |
5 | — | 8 | 1 | 1 | 1 | 7 | 4 | — | — | 8 | 8 | 8 | 8 | 12 | 21 | 4 | — | — | 3 | 3 | |
Wind waves Height (m) Direction Period (s) | N 3 | NNW 3 | NE 4 | ENE 5 | E 5 | — | — | — | SSW 3 | WSW 3 | SW 3 | SW 3 | SW 4 | SW 4 | — | — | SE 3 | SSW 4 | — | ENE 4 | ENE 6 |
7 | 3 | 14 | 37 | 21 | — | — | — | 1 | 1 | 2 | 5 | 11 | 4 | — | — | 2 | 39 | — | 18 | 135 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 78 | 36 | 258 | 727 | 851 | 851 | 1166 | 1166 | 36 | 134 | 682 | 336 | 0 | 0 | 605 | 642 | 854 | 684 | 14 | 72 | 0 |
Best forecast wave conditions in Long Island New York | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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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.










