Surf Forecasts:
Road K surf forecast from 13 Aug 2026:
- Best quality surf: Monday 17 Aug, 11AM (local time) - 4ft (1.2m), 7s period, S swell with offshore winds.
- Most powerful swell: Sunday 16 Aug, 11PM (local time) - 6ft (1.9m), 7s period, SSW swell with 322 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 11AM (local time) - 4ft (1.2m), 7s period with S 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 (Aug 17) at 11AM. The primary swell is predicted to be 1.2m and 7s period. 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 1.9m 7s and forecast to arrive on Sunday (Aug 16) at 11PM. 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 3s period and expected on Monday (Aug 17) at 8PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Mon 17th Aug) | 4ft (1.2m) 7s |
| Best Surf | 11AM (Mon 17th Aug) | 4ft (1.2m) 7s |
| Most Powerful | 11PM (Sun 16th Aug) | 6ft (1.9m) 7s |
Table - best surf conditions forecast for Road K over the next 16 days.
The Lowdown
Alright, let me tell you what I'm seeing for the next couple of weeks. Honestly, straight up, there’s a lot of flat, choppy nothingness to wade through before we get a sniff of anything decent. We’re looking at a long stretch of quiet surf, so if you’re desperate, maybe keep the gear waxed but don’t get your hopes up too high for a while yet.
For the first few days, from now through the early part of next week, it’s pretty grim. We’re looking at tiny, period-poor slop with persistent onshore or cross winds. There’s a little bump late Thursday the 13th with clean conditions at a cross-off wind, but it's only 2 ft of weak, short-period swell – not worth the rigmarole. The weekend and start of next week are basically a write-off with small surf and choppy conditions. The water temp at Road K is a balmy 76°F, which is much warmer than normal for this time of year, so at least you won’t freeze if you’re just floating around.
Now, hang in there. We finally get a pulse of energy on Monday the 17th. The morning brings a clean, offshore wind with the swell bumping up to 5 ft from the south, with a moderate period of 8 seconds. The combined energy jumps right up to (286) – that's decent, real moderate wave energy. That early session looks like the standout of the entire run. It’s still not a huge wave, but with that clean, gentle offshore wind, Road K will have some fun, shapely lines. It's a beginner-friendly sandbar, so it'll be ideal for anyone looking to progress into a bit more size. That’s your pick. Later that day the wind swings and turns it to chop, so be on it early.
After that, we’re back into a frustrating pattern. Tuesday the 18th afternoon gets a bit of glass, but it’s only a weak 1 ft length from the southeast with a long period of 13 seconds. That long period for a sandbar is tricky; it can break straight and close out. Then Thursday the 20th morning has a little bump to 4 ft with clean offshore wind from the north, but the combined energy is only (105) – moderate, but nothing special.
The second week looks pretty similar – small, weak, and often messy. The best of a bad bunch might be Friday the 28th with 4 ft of easterly swell and a light cross-shore wind, but it’s short-period and still has a cross-chop. Not worth the trip on its own.
Look, if it wasn't for that Monday the 17th morning window, this would be a total flat spell. If you’ve got some kites, the afternoons with a bit of wind and lumpy water might be more interesting.
Stay patient.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Thu morning. Warm (max 28°C on Thu afternoon, min 19°C on Sat morning). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Sun night. Warm (max 27°C on Mon afternoon, min 20°C on Sun afternoon). Winds decreasing (strong winds from the S on Sun night, light winds from the S by Tue night). | ||||||||||||||||||||
Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | |||||||||||||||
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) | SSW 4 | SSW 5 | SE 9 | ESE 9 | SE 9 | ESE 9 | S 6 | S 6 | S 6 | SSW 6 | S 5 | SSW 7 | S 7 | S 7 | S 7 | S 6 | SE 13 | SE 12 | SE 11 | SE 10 | SE 9 |
Wave Graph | |||||||||||||||||||||
11 | 15 | 12 | 8 | 14 | 8 | 3 | 3 | 11 | 18 | 87 | 308 | 147 | 102 | 61 | 28 | 44 | 69 | 58 | 35 | 30 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | on | cross-on | cross-on | on | cross-off | off | cross-off | cross-off | cross-off | on | cross-on | on | cross-on | cross-on |
High Tide | 8:32AM1.10m | 8:53PM1.22m | 9:20AM1.12m | 9:40PM1.18m | 10:07AM1.12m | 10:26PM1.12m | 10:53AM1.11m | 11:12PM1.04m | 11:39AM1.07m | 11:58PM0.96m | 12:27PM1.02m | 00:46AM0.87m | 1:17PM0.98m | 1:39AM0.80m | |||||||
Low Tide | 2:16PM-0.01m | 2:53AM-0.03m | 3:03PM0.00m | 3:31AM-0.02m | 3:47PM0.03m | 4:08AM0.02m | 4:30PM0.08m | 4:45AM0.06m | 5:14PM0.15m | 5:24AM0.12m | 6:01PM0.21m | 6:06AM0.17m | 6:52PM0.27m | ||||||||
5:56 | — | — | 5:58 | — | — | 5:58 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — | |
— | 7:51 | — | — | 7:50 | — | — | 7:47 | — | — | 7:46 | — | — | 7:45 | — | — | 7:44 | — | — | 7:43 | — | |
mm | 2 | — | — | — | — | — | — | — | — | — | — | 5 | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 28 | 28 | 24 | 25 | 25 | 20 | 23 | 22 | 23 | 22 | 24 | 23 | 27 | 26 | 21 | 22 | 23 | 24 | 25 | 24 |
Feels °C | 23 | 27 | 26 | 24 | 24 | 24 | 17 | 21 | 19 | 19 | 18 | 21 | 22 | 25 | 25 | 20 | 22 | 24 | 24 | 24 | 23 |
Swell 1 Height (m) Direction Period (s) | SSW 4 | SSW 5 | SSW 5 | SSW 5 | SSW 5 | ESE 9 | SE 9 | S 6 | S 6 | ESE 9 | SE 8 | — | S 7 | S 7 | S 7 | S 6 | S 6 | SE 12 | SE 11 | SE 10 | SE 9 |
11 | 15 | 9 | 5 | 4 | 8 | 3 | 3 | 11 | 8 | 3 | — | 147 | 102 | 61 | 28 | 20 | 69 | 58 | 35 | 30 | |
Swell 2 Height (m) Direction Period (s) | SE 8 | SE 10 | SE 9 | ESE 9 | SE 9 | S 5 | S 6 | SE 9 | SE 9 | SE 6 | — | — | — | — | S 16 | SE 8 | SE 9 | S 6 | SSE 6 | — | — |
3 | 4 | 12 | 8 | 14 | 2 | 2 | 3 | 3 | 2 | — | — | — | — | 5 | 18 | 19 | 19 | 11 | — | — | |
Swell 3 Height (m) Direction Period (s) | SE 11 | SE 8 | SE 13 | SE 13 | SE 13 | S 6 | SE 6 | ENE 4 | — | — | — | — | — | — | SE 16 | SSE 14 | SE 13 | — | — | — | — |
4 | 3 | 7 | 7 | 7 | 1 | 1 | 1 | — | — | — | — | — | — | 10 | 18 | 44 | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | WSW 4 | — | — | — | SW 4 | NE 3 | NE 4 | — | SSW 2 | SSW 6 | S 5 | SSW 7 | NW 3 | NW 3 | N 3 | NE 4 | — | — | — | S 6 | S 4 |
6 | — | — | — | 3 | 2 | 3 | — | 1 | 18 | 87 | 308 | 2 | 3 | 1 | 4 | — | — | — | 17 | 11 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 3379 | 2551 | 727 | 851 | 3405 | 775 | 2503 | 2515 | 1610 | 1630 | 1644 | 107 | 0 | 14 | 71 | 0 | 718 | 36 | 529 | 892 | 260 |
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.











