Surf Forecasts:
Road K surf forecast from 10 Aug 2026:
- Best quality surf: Monday 17 Aug, 2PM (local time) - 6ft (1.8m), 7s period, SSW swell with cross-offshore winds.
- Most powerful swell: Monday 17 Aug, 5PM (local time) - 6ft (1.9m), 7s period, SSW swell with 326 kJ wave energy.
- Next surfable swell (1★+): Saturday 15 Aug, 11PM (local time) - 2ft (0.6m), 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 Saturday (Aug 15) at 11PM. The primary swell is predicted to be 0.6m and 7s period with a secondary swell of 0.1m and 9s. 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 Monday (Aug 17) at 5PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Tuesday (Aug 11) at 2AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Sat 15th Aug) | 2ft (0.6m) 7s |
| Best Surf | 2PM (Mon 17th Aug) | 6ft (1.8m) 7s |
| Most Powerful | 5PM (Mon 17th Aug) | 6ft (1.9m) 7s |
Table - best surf conditions forecast for Road K over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s break down Road K.
First up, the next week is a total bust. From Monday the 10th right through to Sunday the 16th, there’s nothin’ worth paddlin’ for. Tiny little 0.5 ft to 2 ft dribble, mostly from the south, with periods barely cracking 5 seconds. That’s not surf, that’s a ripple. Winds are all over the place, mostly cross-onshore and choppy. Don’t even wax your board.
Then Monday the 17th, it’s game on. A solid SSW pulse hits 6 ft with a 7-second period, and the wave energy is moderate to strong (340 in the morning, 603 in the afternoon). The wind is offshore from the NNW, cleanin’ it up real nice. That’s the one to chase. The water’s at 76°F, a touch warmer than normal for this time of year. 6 ft is not for beginners, that’s for folks who know what they’re doin’. The morning is the pick, but the arvo stays clean with a fresh 30 km/h offshore breeze.
Tuesday the 18th drops to 3 ft, still some energy (116) but ordinary, and the wind goes cross-onshore in the arvo. After that, the rest of the run into the second week fades. A tiny 2 ft SE groundswell on Wednesday the 19th with a long 12-second period, but it’s weak and the wind is onshore by the arvo. From the 20th onward, it’s just messy, windy, and small.
So, bottom line: Road K is a sandbar that breaks often, but it’s dead for a week. The only real standout is Monday the 17th – morning session, 6 ft SSW, offshore NNW wind, clean. That’s your best shot in the next 16 days. Don’t miss it.
Rusty.
Short Range ForecastHeavy rain (total 27mm), heaviest during Tue night. Warm (max 27°C on Mon afternoon, min 22°C on Tue night). Winds decreasing (strong winds from the WNW on Mon night, calm by Tue night). | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Thu afternoon. Warm (max 26°C on Fri afternoon, min 19°C on Fri night). Winds decreasing (fresh winds from the NW on Fri morning, light winds from the W by Sun morning). | |||||||||||||||||||
Mon 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | ||||||||||||||
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 5 | S 6 | S 6 | SSW 6 | S 6 | S 6 | S 5 | SSW 4 | SSW 5 | S 5 | SSE 6 | S 5 | S 5 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | SSW 6 |
Wave Graph  | ||||||||||||||||||||
 kJ | 8 | 25 | 23 | 25 | 23 | 15 | 15 | 13 | 20 | 25 | 27 | 19 | 9 | 21 | 21 | 38 | 37 | 23 | 34 | 141 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | cross-off | cross-on | glassy | cross-off | cross-on | cross | cross-off | on | cross-off | cross-off | off | off | off | cross-off | off | cross-off | cross-on | cross |
High Tide | 6:21PM1.20m | 6:51AM0.99m | 7:14PM1.23m | 7:43AM1.05m | 8:05PM1.24m | 8:32AM1.10m | 8:53PM1.22m | 9:20AM1.12m | 9:40PM1.18m | 10:07AM1.12m | 10:26PM1.12m | 10:53AM1.11m | 11:12PM1.04m | |||||||
Low Tide | 00:34AM0.06m | 12:27PM0.04m | 1:27AM0.01m | 1:25PM0.01m | 2:12AM-0.02m | 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 | |||||||
 |  | |  | | | |  |  |  |  | | |  | | | | | | | |
 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — | 6:00 | — | — |
 | 7:54 | — | — | 7:53 | — | — | 7:52 | — | — | 7:51 | — | — | 7:50 | — | — | 7:47 | — | — | 7:46 | — |
mm | — | 2 | — | — | 19 | — | — | — | 6 | 2 | 1 | — | — | — | — | — | — | — | — | 3 |
Temp °C | 27 | 25 | 25 | 27 | 22 | 24 | 26 | 25 | 24 | 24 | 25 | 22 | 26 | 24 | 21 | 24 | 24 | 21 | 23 | 24 |
Feels °C | 27 | 21 | 27 | 28 | 21 | 24 | 25 | 23 | 25 | 24 | 26 | 15 | 22 | 19 | 17 | 20 | 19 | 21 | 20 | 21 |
Swell 1 Height (m) Direction Period (s) | SSE 6 | S 6 | S 6 | ESE 9 | S 6 | S 6 | S 5 | ESE 8 | SSW 5 | SE 3 | SSE 6 | S 5 | S 5 | S 7 | S 7 | S 7 | S 7 | S 7 | SE 9 | SSE 8 |
| kJ | 4 | 25 | 23 | 8 | 23 | 15 | 15 | 7 | 20 | 3 | 27 | 19 | 9 | 21 | 21 | 38 | 37 | 23 | 3 | 7 |
Swell 2 Height (m) Direction Period (s) | SE 10 | SE 10 | SE 9 | — | SE 9 | SE 8 | ENE 4 | SE 14 | SE 8 | SE 10 | SE 10 | SE 10 | SSE 7 | ESE 9 | — | NNW 3 | SE 9 | SE 9 | SE 9 | — |
| kJ | 4 | 4 | 3 | — | 3 | 3 | 2 | 8 | 3 | 4 | 4 | 4 | 4 | 8 | — | 1 | 3 | 3 | 12 | — |
Swell 3 Height (m) Direction Period (s) | E 8 | E 8 | E 8 | E 8 | E 12 | S 15 | ESE 8 | SE 11 | SE 11 | SE 8 | SE 13 | SE 13 | ESE 9 | — | SE 9 | SE 9 | E 12 | — | — | — |
| kJ | 1 | 1 | 1 | 1 | 3 | 4 | 7 | 5 | 4 | 3 | 7 | 7 | 8 | — | 3 | 3 | 3 | — | — | — |
Wind waves Height (m) Direction Period (s) | SSW 5 | WSW 4 | W 4 | SSW 6 | — | NE 3 | — | SSW 4 | — | S 5 | SSW 5 | NW 3 | W 4 | N 3 | NNW 2 | WNW 3 | — | — | S 7 | SSW 6 |
| kJ | 8 | 14 | 2 | 25 | — | 4 | — | 13 | — | 25 | 19 | 5 | 1 | 2 | 1 | 1 | — | — | 34 | 141 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 853 | 2554 | 241 | 36 | 167 | 533 | 853 | 1640 | 125 | 718 | 2548 | 3 | 682 | 682 | 36 | 727 | 67 | 0 | 875 | 1175 |
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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