Surf Forecasts:
Road K surf forecast from 29 Aug 2026:
- Best quality surf: Saturday 29 Aug, 2PM (local time) - 1.5ft (0.5m), 8s period, SE swell with offshore winds.
- Most powerful swell: Thursday 3 Sep, 2PM (local time) - 5.5ft (1.7m), 7s period, SSE swell with 285 kJ wave energy.
- Next surfable swell (1★+): Saturday 29 Aug, 2PM (local time) - 1.5ft (0.5m), 8s 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 Saturday (Aug 29) at 2PM. The primary swell is predicted to be 0.5m and 8s period with a secondary swell of 0.5m and 6s. 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 1.7m 7s and forecast to arrive on Thursday (Sep 03) at 2PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 4s period and expected on Saturday (Aug 29) at 11AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2PM (Sat 29th Aug) | 1.5ft (0.5m) 8s |
| Best Surf | 2PM (Sat 29th Aug) | 1.5ft (0.5m) 8s |
| Most Powerful | 2PM (Thu 3rd Sep) | 5.5ft (1.7m) 7s |
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 run is looking pretty flat and quiet. The whole 16-day window is a struggle, with only a couple of brief moments that might get you wet, and even then it's nothing to write home about.
The first surf worth mentioning doesn't show up until Thursday, September 3rd, and even that's marginal. The week before that? Barely a ripple. Saturday the 29th through Wednesday the 2nd is all tiny, weak swell with poor conditions — we're talking 1 ft to 3 ft, short period, and mostly onshore or cross-shore winds. Not worth paddling out for.
Now, Thursday September 3rd morning at Road K (sandbar) sees a bump up to 6 ft from the SSE, with a period of 7 seconds and clean conditions thanks to a WSW cross-off breeze. The combined swell energy is moderate at 271. But the surf quality is still poor. Thursday afternoon stays at 6 ft, but the wind swings cross-shore, and the energy picks up a bit to 355. Still, it's only a marginal call — the tide might be a factor.
The next real standout is Wednesday September 9th afternoon. This is the best of a pretty average bunch. Swell hits 7 ft from the S, period 9 seconds, and the combined energy is strong at 1065 — that's proper energy. The wind is NW cross-off and clean. But this is a big swell for a sandbar, and with that kind of size, it's really only for experienced surfers. The direction is a bit off the optimum SSE, but it's still surfable. The morning of the 9th also has a clean 3 ft SSE swell with a 12-second period and 394 energy, but it's on the smaller side.
For the rest of the run, it's all under 4 ft and mostly poor. The 10th has some marginal SSE swell with clean conditions in the morning and afternoon, but it's nothing special. After that, from the 11th onward, it's back to tiny, weak swells — 1 ft to 2 ft — with not enough push to get excited about.
Water temperature sits at 71°F, which is 1°F above normal — just about average for this time of year.
So, bottom line: if you're keen, aim for the 9th of September afternoon. That's the only window with real size and clean conditions, but it's a big one, so be ready. Otherwise, it's a long wait until something decent shows up. Keep an eye on the forecasts — things can change.
Rusty.
Short Range ForecastModerate rain (total 13mm), heaviest on Sun night. Warm (max 24°C on Sun night, min 18°C on Sat morning). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 12mm), heaviest on Tue morning. Warm (max 29°C on Thu afternoon, min 20°C on Tue night). Winds decreasing (fresh winds from the E on Tue night, light winds from the WNW by Thu night). | ||||||||||||||||||||
Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | |||||||||||||||
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 8 | SE 8 | SE 8 | SE 8 | SE 8 | S 5 | SE 8 | SE 8 | SE 7 | SE 7 | S 4 | SE 12 | SSE 6 | ESE 6 | SE 6 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SE 7 |
Wave Graph | |||||||||||||||||||||
38 | 31 | 33 | 24 | 18 | 37 | 17 | 23 | 19 | 23 | 19 | 71 | 96 | 96 | 164 | 268 | 279 | 134 | 37 | 26 | 23 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | cross | cross | cross-on | cross-off | off | cross-on | on | cross-on | cross-on | cross-on | cross | cross | on | cross-off | cross | cross-off | cross | on | cross-on |
High Tide | 9:00AM1.07m | 9:18PM1.09m | 9:41AM1.10m | 9:59PM1.07m | 10:23AM1.12m | 10:42PM1.02m | 11:08AM1.12m | 11:28PM0.97m | 11:57AM1.10m | 00:19AM0.91m | 12:52PM1.08m | 1:19AM0.86m | 1:55PM1.06m | 2:28AM0.83m | |||||||
Low Tide | 2:33PM0.03m | 2:54AM0.00m | 3:15PM0.02m | 3:32AM-0.01m | 3:59PM0.02m | 4:13AM-0.00m | 4:46PM0.05m | 4:58AM0.02m | 5:38PM0.10m | 5:47AM0.06m | 6:36PM0.15m | 6:43AM0.11m | 7:40PM0.19m | ||||||||
6:13 | — | — | 6:13 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — | 6:18 | — | — | 6:18 | — | — | |
— | 7:27 | — | — | 7:25 | — | — | 7:23 | — | — | 7:22 | — | — | 7:21 | — | — | 7:19 | — | — | 7:17 | — | |
mm | — | — | — | — | — | 13 | — | — | — | 3 | 2 | 5 | 2 | — | — | — | — | — | — | — | 4 |
Temp °C | 19 | 23 | 22 | 23 | 23 | 24 | 21 | 23 | 23 | 23 | 23 | 23 | 20 | 20 | 23 | 24 | 29 | 29 | 19 | 21 | 22 |
Feels °C | 16 | 21 | 19 | 21 | 20 | 23 | 22 | 24 | 23 | 24 | 24 | 25 | 16 | 16 | 24 | 24 | 31 | 31 | 19 | 22 | 22 |
Swell 1 Height (m) Direction Period (s) | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | S 5 | S 5 | SSW 5 | SE 7 | SSW 5 | SE 13 | SE 12 | SE 11 | S 6 | SE 10 | SE 9 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SE 7 |
38 | 31 | 33 | 24 | 18 | 37 | 12 | 7 | 19 | 2 | 7 | 71 | 96 | 44 | 58 | 3 | 279 | 134 | 35 | 26 | 23 | |
Swell 2 Height (m) Direction Period (s) | SSE 7 | S 6 | S 6 | S 6 | — | WSW 6 | SE 8 | SE 8 | — | SE 8 | SE 10 | — | — | SE 10 | — | — | — | — | ESE 8 | ESE 7 | SSW 5 |
15 | 12 | 6 | 6 | — | 21 | 17 | 23 | — | 3 | 4 | — | — | 63 | — | — | — | — | 37 | 15 | 8 | |
Swell 3 Height (m) Direction Period (s) | E 9 | ENE 5 | E 6 | — | E 9 | SE 8 | — | — | — | SE 10 | — | — | — | — | — | — | — | — | N 3 | SE 8 | E 6 |
2 | 2 | 3 | — | 2 | 17 | — | — | — | 4 | — | — | — | — | — | — | — | — | 1 | 11 | 7 | |
Wind waves Height (m) Direction Period (s) | NE 4 | — | — | SW 3 | SSW 4 | NNE 2 | — | — | S 4 | SE 7 | S 4 | SSE 5 | SSE 6 | ESE 6 | SE 6 | SSE 7 | SSW 7 | — | NNW 2 | — | — |
7 | — | — | 2 | 17 | 1 | — | — | 3 | 23 | 19 | 42 | 87 | 96 | 164 | 268 | 76 | — | 1 | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 31 | 636 | 36 | 594 | 1761 | 0 | 31 | 1174 | 1174 | 1174 | 1174 | 71 | 210 | 2554 | 145 | 61 | 3 | 14 | 71 | 253 | 732 |
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.











