Surf Forecasts:
Road K surf forecast from 7 Sep 2026:
- Best quality surf: Monday 7 Sep, 2PM (local time) - 1.5ft (0.4m), 10s period, E swell with cross-offshore winds.
- Most powerful swell: Thursday 10 Sep, 8AM (local time) - 6.5ft (2.0m), 7s period, SSW swell with 353 kJ wave energy.
- Next surfable swell (1★+): Monday 7 Sep, 2PM (local time) - 1.5ft (0.4m), 10s period with E 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 Monday (Sep 07) at 2PM. The primary swell is predicted to be 0.4m and 10s period with a secondary swell of 0.3m and 9s. 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 2.0m 7s and forecast to arrive on Thursday (Sep 10) at 8AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Friday (Sep 11) at 8AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2PM (Mon 7th Sep) | 1.5ft (0.4m) 10s |
| Best Surf | 2PM (Mon 7th Sep) | 1.5ft (0.4m) 10s |
| Most Powerful | 8AM (Thu 10th Sep) | 6.5ft (2.0m) 7s |
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 on offer at Road K over the next sixteen days.
Right off the bat, I gotta be straight with you – it’s a bleak start. The first ten days or so are a real struggle. We’ve got some tiny, weak swell pushing in, but the wind is just all over the place, mostly onshore or cross-shore, and the energy is pathetic (around 44). The water is a touch warmer than normal at 72°, but that’s the only good news. Honestly, for the first week, you’re looking at flat, blown-out, or just plain messy conditions. There’s a solid gap with no real recommendations until we get past the middle of the month.
Late on Friday the 11th, there’s a flicker of hope. The morning shows a little 3ft swell from the SSW with a moderate offshore breeze from the NNW. It’s clean, but tiny, with only 73 units of combined energy. It’s surfable, but nothing to get excited about.
The first real standout, and honestly the only one worth circling on the calendar, is the morning of Friday the 18th of September. We get a bump in energy to 116, with a 4ft swell from the SW. The wind is a gentle offshore from the NNE, so it should be clean. Now, the swell period is only 5 seconds, so it’s short-period windswell, nothing groundswell about it, but for an exposed sandbar like Road K, that’s what you get and it’s better than flat. Because it’s a sandbar, the short period isn't a deal-breaker. Expect some rippy conditions but the clean wind is a big plus.
After that, it fades back into small, clean but weak surf. The weekend of the 20th and 21st is back to tiny 1ft bumps with onshore or cross-onshore wind. Not great.
So, to sum it up: there’s only one day that has a pulse. If you’re keen, point your board at Road K on the morning of Friday the 18th. It’s not going to be epic, but for clean, rideable waves in a long flat spell, it’s your best bet. The rest is a write-off for a while.
Rusty.
Short Range ForecastMostly dry. Warm (max 25°C on Mon afternoon, min 19°C on Mon morning). Winds increasing (calm on Tue night, strong winds from the SW by Wed night). | Days 4-6 Weather SummarySome drizzle, heaviest during Thu night. Warm (max 25°C on Thu night, min 17°C on Sat morning). Winds decreasing (fresh winds from the WSW on Thu morning, light winds from the NW by Fri night). | ||||||||||||||||||||
Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | |||||||||||||||
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) | E 10 | E 10 | E 9 | SE 9 | SE 9 | SE 9 | SW 4 | SSW 4 | SSW 6 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | S 6 | SSW 6 | SE 9 | SE 10 | SE 10 | SE 10 | SE 10 | SE 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 31 | 17 | 15 | 12 | 12 | 12 | 4 | 42 | 254 | 306 | 243 | 118 | 58 | 40 | 15 | 14 | 14 | 15 | 34 | 44 | 52 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross-off | off | cross | cross-off | cross-on | cross-on | cross-on | cross | cross | off | off | cross-off | cross-off | cross | on | on | cross-on | cross-on | cross |
High Tide | 5:12PM1.12m | 5:44AM0.98m | 6:07PM1.15m | 6:35AM1.05m | 6:58PM1.18m | 7:24AM1.11m | 7:45PM1.18m | 8:09AM1.16m | 8:30PM1.16m | 8:53AM1.17m | 9:14PM1.12m | 9:36AM1.16m | 9:57PM1.06m | ||||||||
Low Tide | 10:09AM0.16m | 11:24PM0.13m | 11:22AM0.12m | 00:22AM0.08m | 12:27PM0.07m | 1:08AM0.04m | 1:19PM0.04m | 1:47AM0.01m | 2:04PM0.02m | 2:22AM0.01m | 2:44PM0.02m | 2:55AM0.02m | 3:22PM0.05m | 3:29AM0.05m | |||||||
 | |  |  | |  | | | | | |  | | | | | | | | | | |
 | 6:22 | — | — | 6:22 | — | — | 6:24 | — | — | 6:24 | — | — | 6:26 | — | — | 6:26 | — | — | 6:28 | — | — |
 | — | 7:13 | — | — | 7:10 | — | — | 7:08 | — | — | 7:07 | — | — | 7:06 | — | — | 7:04 | — | — | 7:02 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 25 | 25 | 21 | 24 | 25 | 23 | 23 | 23 | 23 | 24 | 25 | 19 | 23 | 22 | 19 | 20 | 21 | 22 | 22 | 22 |
Feels °C | 16 | 21 | 22 | 19 | 23 | 21 | 24 | 21 | 19 | 20 | 22 | 23 | 15 | 20 | 21 | 18 | 18 | 19 | 20 | 20 | 21 |
Swell 1 Height (m) Direction Period (s) | E 10 | E 10 | E 9 | SSW 4 | SE 9 | SE 9 | SE 8 | SE 10 | SE 9 | SE 9 | SSW 7 | SSW 7 | SSW 7 | S 6 | SSW 6 | SSW 6 | SE 10 | SE 10 | SE 10 | SE 10 | SE 9 |
| kJ | 31 | 17 | 15 | 2 | 12 | 12 | 3 | 14 | 12 | 12 | 176 | 118 | 58 | 40 | 15 | 6 | 14 | 15 | 34 | 44 | 52 |
Swell 2 Height (m) Direction Period (s) | SE 9 | SE 8 | SE 8 | E 9 | E 8 | E 9 | E 9 | E 9 | E 9 | E 8 | SE 9 | SE 10 | SE 10 | SE 9 | SSE 6 | SE 9 | SSE 5 | SSE 6 | SSE 6 | — | — |
| kJ | 12 | 11 | 11 | 6 | 6 | 6 | 2 | 2 | 2 | 1 | 13 | 15 | 15 | 14 | 7 | 14 | 3 | 3 | 3 | — | — |
Swell 3 Height (m) Direction Period (s) | S 5 | S 5 | S 5 | SE 9 | — | S 5 | SE 10 | — | — | — | — | E 8 | — | — | ESE 9 | SSE 6 | SSW 5 | — | — | — | — |
| kJ | 1 | 1 | 1 | 12 | — | 1 | 4 | — | — | — | — | 1 | — | — | 8 | 4 | 3 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NW 2 | — | SW 4 | — | SW 4 | SW 3 | SW 4 | SSW 4 | SSW 6 | SSW 7 | SSW 7 | — | N 3 | — | — | — | — | — | — | S 3 | SSW 3 |
| kJ | 1 | — | 3 | — | 4 | 3 | 4 | 42 | 254 | 306 | 243 | — | 3 | — | — | — | — | — | — | 1 | 3 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 36 | 136 | 348 | 405 | 854 | 594 | 774 | 1019 | 1019 | 134 | 84 | 0 | 0 | 0 | 727 | 853 | 853 | 313 | 774 | 260 | 136 |
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.
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