
Surf Forecasts:
Road K surf forecast from 3 Sep 2026:
- Best quality surf: Friday 4 Sep, 2AM (local time) - 2ft (0.6m), 8s period, ESE swell with cross-offshore winds.
- Most powerful swell: Thursday 10 Sep, 2AM (local time) - 5ft (1.5m), 6s period, SSW swell with 164 kJ wave energy.
- Next surfable swell (1★+): Friday 4 Sep, 2AM (local time) - 2ft (0.6m), 8s 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 Friday (Sep 04) at 2AM. The primary swell is predicted to be 0.6m and 8s period with a secondary swell of 0.4m and 5s. Another secondary swell of 0.7m 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 1.5m 6s and forecast to arrive on Thursday (Sep 10) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 4s period and expected on Monday (Sep 07) at 11AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Fri 4th Sep) | 2ft (0.6m) 8s |
| Best Surf | 2AM (Fri 4th Sep) | 2ft (0.6m) 8s |
| Most Powerful | 2AM (Thu 10th Sep) | 5ft (1.5m) 6s |
Table - best surf conditions forecast for Road K over the next 16 days.
The Lowdown
G’day, Rusty here. Let’s be straight with you–this 16-day stretch for Road K is a tough one. We’ve got a long, quiet gap right at the start, with nothing worth paddling out for until the second week. The first proper surfable window shows up on the morning of Friday 12 September, but even then it’s small and ordinary. Hang tight, because the pattern finally shifts into something borderline fun by Tuesday 15 September, and that’s your best bet.
The water temp here is about average for the time of year, nothing unusual to report.
Thursday 4 September through to Thursday 11 September is a write-off. The swell is tiny, under 3ft most days, and when it does nudge up on Monday 7 September the combined wave energy climbs to 120 (moderate), but you’re looking at a short-period 11-second E groundswell that’ll be too straight for this sandbar setup – much better suited to a reef or point. Winds are mostly offshore or cross-off, but the waves are just too weak and short to get excited about. No standouts here.
Friday 12 September morning: still poor. Swell drops to 0.7ft from the ESE with a weak combined energy of 17, and onshore SW wind at 12 mph makes it choppy. Not happening.
Then Sunday 14 September afternoon: we get a bit of hope. Swell is only 1ft from the SE, period 9 seconds, combined energy at 60 (weak), but at least it’s clean with NW offshore wind at 16 mph. Surfable but still very ordinary.
Tuesday 15 September is your real standout in this outlook. Morning: 2ft ESE swell, period 8 seconds, combined energy 73 (weak), but clean with N offshore wind at 12 mph. Still small, but the offshore is glassy and the sets might offer a few grovelly runners. Afternoon improves a touch: 2ft E swell, period 9 seconds, combined energy 88 (still weak), with NNW offshore wind at 9 mph and gentle offshore conditions. Clean, tiny, but the best we’ve got in this run. If you’re desperate for a paddle, that Tuesday afternoon is your window.
Wednesday 16 September morning repeats the same small, clean theme: 2ft ESE swell, period 9 seconds, 70 energy, N offshore at 9 mph. Ordinary but rideable.
After that, Thursday 17 September sees a weird spike in period to 13 seconds from the SE, but the swell is only 1ft and combined energy drops to 57 – that long-period groundswell on a sandbar at that size is just not going to break properly. Cross-shore wind kills any hope. Then Friday 18 September morning brings a sudden 4ft E swell at 5-second period (134 energy, moderate), but with onshore SSE wind at 6 mph and rain showers, the quality will be messy and short-period wind chop. Not for paddle surfing – maybe worth a look if you’re kiting.
Summing up: don’t hold your breath. The only half-decent chance is Tuesday 15 September afternoon, with clean offshore winds on ankle-to-knee high swell. It’s a small window, but it’s clean. For the rest of the 16 days, the sandbar stays quiet. Forecasts can shift, but right now, leave the board on the roof until that Tuesday.
Rusty.
Short Range ForecastModerate rain (total 19mm), heaviest on Fri afternoon. Warm (max 26°C on Thu night, min 20°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 5mm), mostly falling on Sat night. Warm (max 23°C on Tue afternoon, min 17°C on Sat night). Wind will be generally light. | ||||||||||||||||||
Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | ||||||||||||||
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 10 | SE 9 | SE 9 | ESE 8 | SE 8 | SE 8 | SE 8 | SSW 6 | SSW 6 | E 6 | ENE 6 | E 6 | E 7 | E 11 | E 10 | E 10 | E 10 | E 9 | SW 6 |
Wave Graph | |||||||||||||||||||
57 | 50 | 38 | 47 | 24 | 23 | 16 | 11 | 12 | 76 | 56 | 52 | 44 | 116 | 56 | 71 | 28 | 26 | 107 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-on | cross-off | cross-off | off | off | off | off | cross | cross-off | glassy | cross-off | cross-off | on | cross | cross-off | cross-on | cross |
High Tide | 00:19AM0.91m | 12:52PM1.08m | 1:19AM0.86m | 1:55PM1.06m | 2:28AM0.83m | 3:04PM1.06m | 3:39AM0.85m | 4:11PM1.08m | 4:45AM0.90m | 5:12PM1.12m | 5:44AM0.98m | 6:07PM1.15m | |||||||
Low Tide | 5:47AM0.06m | 6:36PM0.15m | 6:43AM0.11m | 7:40PM0.19m | 7:46AM0.15m | 8:52PM0.20m | 8:55AM0.17m | 10:10PM0.18m | 10:09AM0.16m | 11:24PM0.13m | 11:22AM0.12m | 00:22AM0.08m | |||||||
— | 6:18 | — | — | 6:18 | — | — | 6:20 | — | — | 6:20 | — | — | 6:22 | — | — | 6:22 | — | — | |
7:21 | — | 7:19 | — | — | 7:17 | — | — | 7:15 | — | — | 7:14 | — | — | 7:13 | — | — | 7:10 | — | |
mm | 3 | 2 | — | 3 | 1 | 9 | 1 | — | — | 4 | — | — | 1 | — | — | — | — | — | — |
Temp °C | 22 | 23 | 25 | 26 | 24 | 24 | 22 | 22 | 23 | 22 | 17 | 19 | 20 | 19 | 21 | 21 | 22 | 23 | 23 |
Feels °C | 22 | 24 | 26 | 28 | 27 | 27 | 23 | 19 | 22 | 21 | 13 | 19 | 19 | 15 | 19 | 18 | 21 | 20 | 20 |
Swell 1 Height (m) Direction Period (s) | ESE 6 | SE 6 | ESE 6 | ESE 8 | S 4 | SSW 4 | SSW 6 | SSW 6 | SSW 6 | S 7 | SSW 6 | E 6 | E 7 | E 11 | E 10 | E 10 | E 10 | E 9 | E 9 |
57 | 40 | 22 | 47 | 9 | 8 | 10 | 11 | 12 | 23 | 7 | 52 | 44 | 116 | 56 | 71 | 28 | 26 | 14 | |
Swell 2 Height (m) Direction Period (s) | SE 10 | SE 9 | SE 9 | S 5 | SE 8 | ESE 7 | ESE 7 | E 6 | E 7 | — | SE 9 | SSW 6 | SE 9 | SE 9 | ENE 4 | SE 8 | SE 9 | SE 9 | SE 9 |
57 | 50 | 38 | 7 | 24 | 15 | 15 | 7 | 8 | — | 3 | 7 | 3 | 3 | 4 | 3 | 3 | 3 | 3 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | SW 4 | E 6 | SE 8 | SE 8 | SE 8 | S 7 | — | — | SE 9 | S 6 | S 5 | SE 8 | S 6 | S 5 | — | — |
— | — | — | 3 | 7 | 23 | 16 | 9 | 9 | — | — | 3 | 2 | 1 | 3 | 1 | 1 | — | — | |
Wind waves Height (m) Direction Period (s) | — | SW 3 | SSW 4 | SSW 4 | SW 4 | — | — | N 3 | NE 4 | E 6 | ENE 6 | — | — | NE 4 | — | WSW 2 | SW 4 | SW 4 | SW 6 |
— | 2 | 19 | 17 | 14 | — | — | 1 | 1 | 76 | 56 | — | — | 8 | — | 1 | 3 | 19 | 107 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 134 | 59 | 134 | 0 | 0 | 263 | 0 | 636 | 732 | 71 | 238 | 0 | 0 | 26 | 59 | 61 | 36 | 209 | 214 |
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.










