Surf Forecasts:
Road K surf forecast from 29 Aug 2026:
- Best quality surf: Sunday 30 Aug, 11PM (local time) - 2.5ft (0.8m), 5s period, SSW swell with cross-offshore winds.
- Most powerful swell: Wednesday 2 Sep, 8PM (local time) - 4.5ft (1.3m), 6s period, ESE swell with 140 kJ wave energy.
- Next surfable swell (1★+): Sunday 30 Aug, 11PM (local time) - 2.5ft (0.8m), 5s period with SSW 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 Sunday (Aug 30) at 11PM. The primary swell is predicted to be 0.8m and 5s period with a secondary swell of 0.4m and 8s. 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 1.3m 6s and forecast to arrive on Wednesday (Sep 02) at 8PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 2s period and expected on Tuesday (Sep 01) at 11PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Sun 30th Aug) | 2.5ft (0.8m) 5s |
| Best Surf | 11PM (Sun 30th Aug) | 2.5ft (0.8m) 5s |
| Most Powerful | 8PM (Wed 2nd Sep) | 4.5ft (1.3m) 6s |
Table - best surf conditions forecast for Road K over the next 16 days.
The Lowdown
Alright, folks, Rusty here. Let’s get straight into it. We’re looking at the Road K sandbar, and I gotta be honest with you, it’s a bit of a tough stretch ahead. The next week and a half is mostly a write-off. We’ve got a long gap of poor conditions from now until the end of the first week of September. The swell is tiny, the wind is usually messy, and the wave energy is pathetic, reading at just 47 in the combined energy department. It’s the kind of stuff that’ll have you checking your watch more than the horizon.
That first glimmer of hope doesn’t show up until Wednesday morning, September 9th. That’s the one standout. We’ve got a 3ft swell rolling in from the SSE with a solid 12-second period. The combined energy jumps to 348, which is proper moderate wave energy, and the wind is glassy with a slight air, making it clean. That’s a long-period groundswell, so it’ll have better shape and more push, but at a beach-sandbar setup like Road K, it might wall up a bit. Still, that’s the best wave we’re going to see. The water temperature is about 71°F, which is pretty normal for the time of year, nothing weird there.
After that, it’s back to the doldrums. Thursday morning the 10th has a bit of energy at 100, but the wind is onshore. Friday the 11th brings strong, clean offshore winds, but the swell is short period and weak, just 3ft from the SSW at 5 seconds, and the energy is only 139. It’s messy. The following Saturday and Sunday, the 12th and 13th, stay clean with offshore winds, but the swell is small and weak, barely registering above 70 on the energy scale. The waves are surfable but very ordinary.
Honestly, if you’re desperate, aim for the morning of the 9th. That’s your best shot. For the rest of it, you’re better off waiting for the next system. The forecast can always change, but right now, it’s a lean run.
Rusty out.
Short Range ForecastLight rain (total 4mm), mostly falling on Tue morning. Warm (max 25°C on Sun night, min 21°C on Sat afternoon). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 31mm), heaviest during Wed night. Warm (max 24°C on Tue afternoon, min 18°C on Fri morning). Winds increasing (light winds from the SSW on Tue afternoon, fresh winds from the NNE by Fri morning). | |||||||||||||||||||
Sat 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | ||||||||||||||
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 | SSW 5 | SE 8 | SE 8 | SE 7 | SE 7 | SE 8 | SE 12 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | SE 6 | SE 7 | SE 6 | SE 8 | S 7 |
Wave Graph  | ||||||||||||||||||||
 kJ | 31 | 33 | 24 | 18 | 26 | 17 | 23 | 19 | 12 | 17 | 118 | 115 | 129 | 106 | 74 | 61 | 52 | 19 | 17 | 32 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross | cross-on | glassy | cross-off | cross-on | cross-on | cross | cross-on | cross | cross | cross-on | on | cross | cross-on | off | cross-off | off | glassy |
High Tide | 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 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — | 6:18 | — | — | 6:18 | — | — |
 | 7:27 | — | — | 7:25 | — | — | 7:23 | — | — | 7:22 | — | — | 7:21 | — | — | 7:19 | — | — | 7:17 | — |
mm | — | — | — | — | 2 | — | — | — | 2 | 2 | 8 | — | 1 | 13 | 2 | 1 | 4 | — | — | — |
Temp °C | 23 | 22 | 23 | 23 | 25 | 21 | 23 | 23 | 22 | 24 | 23 | 20 | 20 | 22 | 22 | 23 | 23 | 18 | 23 | 23 |
Feels °C | 22 | 20 | 21 | 20 | 24 | 21 | 23 | 23 | 22 | 27 | 25 | 17 | 18 | 23 | 24 | 23 | 24 | 13 | 23 | 24 |
Swell 1 Height (m) Direction Period (s) | SE 8 | SE 8 | SE 8 | SE 8 | SSW 5 | S 5 | SSW 5 | SE 7 | SE 7 | SE 8 | SE 12 | SE 11 | SE 10 | ESE 6 | ESE 6 | SE 6 | SE 7 | SE 6 | SSW 5 | S 7 |
| kJ | 31 | 33 | 24 | 18 | 26 | 11 | 7 | 19 | 12 | 17 | 118 | 96 | 80 | 106 | 74 | 61 | 52 | 19 | 9 | 32 |
Swell 2 Height (m) Direction Period (s) | S 6 | S 6 | SSE 5 | — | SE 8 | SE 8 | SE 8 | SSW 5 | SSW 4 | SSW 4 | SSW 4 | SSW 4 | SSW 5 | SE 10 | SE 9 | SE 9 | SSW 5 | SSW 5 | ESE 6 | SE 8 |
| kJ | 12 | 6 | 3 | — | 17 | 17 | 23 | 4 | 2 | 3 | 2 | 2 | 2 | 57 | 39 | 29 | 13 | 8 | 14 | 10 |
Swell 3 Height (m) Direction Period (s) | ENE 5 | E 6 | — | E 9 | — | — | — | — | SE 8 | SE 14 | — | — | — | SSW 6 | — | — | SE 9 | SE 8 | SE 8 | E 9 |
| kJ | 4 | 3 | — | 2 | — | — | — | — | 3 | 7 | — | — | — | 6 | — | — | 12 | 11 | 17 | 14 |
Wind waves Height (m) Direction Period (s) | — | — | SSW 6 | SSW 4 | — | — | — | — | SW 3 | — | ENE 3 | ESE 6 | ESE 6 | — | SSW 5 | SSW 4 | — | NW 3 | WNW 2 | — |
| kJ | — | — | 12 | 16 | — | — | — | — | 3 | — | 8 | 115 | 129 | — | 16 | 23 | — | 2 | 1 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 612 | 36 | 594 | 136 | 0 | 636 | 718 | 313 | 671 | 142 | 203 | 529 | 573 | 187 | 26 | 105 | 0 | 636 | 0 | 0 |
Best forecast wave conditions in Long Island New York | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Road K surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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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