Surf Forecasts:
Road K surf forecast from 14 Sep 2026:
- Best quality surf: Monday 14 Sep, 5AM (local time) - 1.5ft (0.4m), 9s period, SE swell with offshore winds.
- Most powerful swell: Sunday 20 Sep, 2PM (local time) - 5ft (1.5m), 6s period, SSW swell with 144 kJ wave energy.
- Next surfable swell (1★+): Monday 14 Sep, 5AM (local time) - 1.5ft (0.4m), 9s 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 Monday (Sep 14) at 5AM. The primary swell is predicted to be 0.4m and 9s period with a secondary swell of 0.6m and 6s. Another secondary swell of 0.5m and 6s is also forecast. 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 1.5m 6s and forecast to arrive on Sunday (Sep 20) at 2PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Monday (Sep 21) at 2AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Mon 14th Sep) | 1.5ft (0.4m) 9s |
| Best Surf | 5AM (Mon 14th Sep) | 1.5ft (0.4m) 9s |
| Most Powerful | 2PM (Sun 20th Sep) | 5ft (1.5m) 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 at Road K for the next couple of weeks.
Straight up, it’s a tough stretch of surf for the next several days. We’ve got a real dry spell on the cards. From now (14 September) right through to the morning of 20 September, there’s hardly anything worth paddling out for. We're seeing tiny, weak swell with a combined energy barely cracking 50 (units), and the wind is all over the place – cross-shore, cross-onshore, onshore. It's just messy. You could have a mosey on a longboard Monday afternoon (14th) when the wind goes moderate offshore and you’ve got 2ft from the SE, but it's ordinary at best.
The first real glimmer comes on the Sunday, 20th of September. The morning sees a bit of a bump in energy – 5ft from the SSW with 173 (units) of energy – but that’s paired with a moderate cross-offshore wind from the NW, so it'll be pretty clean. The afternoon gets even better: a gentle offshore from the N, with the swell dropping to a still-rideable 4ft. It’s not going to be epic, but it’s the first session that actually looks like a session.
The standout window, and it's a big one, arrives on Thursday, 24 September. We’ve got a serious pulse of long-period groundswell hitting – 10ft from the E with a period of 10 seconds. The combined energy is massive at 2972 (units) in the afternoon. The wind is a fresh cross-offshore from the NE, keeping things clean. This is big, powerful stuff – it’s going to be a heavy day. At 10ft, this is expert territory, and the long 10-second period means those sets will have plenty of pop and heft. The water temp is about average for this time of year. If you’re an experienced charger, this is the day to have circled. The Friday (25th) still has size, dropping to 6ft, but the wind swings cross-onshore, so Thursday is the real jewel in this forecast.
After that, the swell tapers off quickly into smaller, wind-affected conditions for the last few days of the outlook.
So, keep the board waxed for the 20th for a gentle reintroduction, but lock in the 24th for the real power show. It’s a long-range call, so fingers crossed it holds.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Sun night, min 15°C on Tue morning). Mainly fresh winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 21°C on Thu morning, min 18°C on Fri morning). Wind will be generally light. | ||||||||||||||||||
Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | ||||||||||||||
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) | SSE 6 | SE 9 | SE 9 | SE 8 | SE 9 | E 5 | ESE 5 | ESE 5 | ESE 7 | E 8 | E 8 | E 7 | ESE 7 | SE 7 | SE 12 | SE 12 | SE 12 | ESE 7 | ESE 11 |
Wave Graph  | |||||||||||||||||||
 kJ | 41 | 28 | 38 | 18 | 29 | 20 | 8 | 8 | 11 | 29 | 29 | 27 | 15 | 14 | 22 | 21 | 21 | 18 | 47 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | off | off | cross-off | cross | cross-on | on | cross-on | cross-on | cross | cross-on | cross-on | off | cross-off | on | cross-on | on | on | cross-on |
High Tide | 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 | 1:31PM0.93m | 2:03AM0.75m | 2:31PM0.90m | 3:07AM0.74m | ||||||
Low Tide | 3:29AM0.05m | 3:59PM0.09m | 4:04AM0.09m | 4:38PM0.14m | 4:41AM0.14m | 5:21PM0.20m | 5:23AM0.19m | 6:08PM0.26m | 6:10AM0.25m | 7:02PM0.30m | 7:03AM0.29m | 8:03PM0.32m | |||||||
 |  |  | | | | | | | | | |  | | | | | |  | |
 | — | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — | 6:31 | — | — | 6:33 | — | — | 6:33 | — | — |
 | 7:02 | — | 7:00 | — | — | 6:59 | — | — | 6:58 | — | — | 6:55 | — | — | 6:53 | — | — | 6:52 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 |
Temp °C | 23 | 19 | 23 | 21 | 16 | 17 | 17 | 17 | 19 | 20 | 21 | 21 | 21 | 18 | 20 | 20 | 20 | 20 | 22 |
Feels °C | 24 | 13 | 18 | 15 | 13 | 15 | 15 | 17 | 18 | 19 | 19 | 18 | 19 | 15 | 19 | 18 | 20 | 18 | 19 |
Swell 1 Height (m) Direction Period (s) | SSE 6 | S 6 | SE 9 | SE 8 | SE 9 | E 5 | ESE 5 | ESE 5 | ESE 5 | E 8 | E 8 | E 7 | ESE 7 | SE 7 | ESE 7 | ESE 7 | ESE 6 | ESE 7 | ESE 11 |
| kJ | 36 | 16 | 38 | 18 | 21 | 20 | 7 | 8 | 5 | 29 | 29 | 27 | 15 | 12 | 9 | 15 | 13 | 18 | 47 |
Swell 2 Height (m) Direction Period (s) | SE 9 | SE 9 | S 6 | S 6 | SSE 7 | ESE 9 | ESE 9 | ESE 9 | ESE 7 | SE 13 | SE 13 | ESE 12 | ESE 12 | SW 4 | SE 12 | SE 12 | SE 12 | SE 9 | ESE 7 |
| kJ | 29 | 28 | 10 | 7 | 5 | 8 | 8 | 8 | 11 | 7 | 25 | 15 | 15 | 2 | 22 | 21 | 21 | 12 | 10 |
Swell 3 Height (m) Direction Period (s) | SE 9 | SE 5 | — | SE 15 | S 6 | SSE 7 | S 6 | SE 13 | SE 10 | — | — | SE 9 | SE 9 | ESE 12 | ESE 9 | ESE 9 | SE 8 | ESE 11 | — |
| kJ | 41 | 5 | — | 8 | 3 | 4 | 3 | 7 | 4 | — | — | 3 | 3 | 14 | 8 | 7 | 11 | 13 | — |
Wind waves Height (m) Direction Period (s) | SSW 6 | N 3 | NNW 3 | NE 4 | ENE 5 | — | — | — | — | SSW 3 | SW 3 | SSW 3 | SW 4 | NE 6 | ENE 4 | ESE 3 | — | SE 3 | S 4 |
| kJ | 17 | 7 | 4 | 20 | 29 | — | — | — | — | 1 | 2 | 4 | 3 | 9 | 4 | 2 | — | 1 | 12 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 31 | 78 | 0 | 313 | 859 | 851 | 774 | 854 | 1166 | 136 | 136 | 245 | 36 | 682 | 853 | 636 | 642 | 1175 | 1167 |
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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