Surf Forecasts:
Road K surf forecast from 21 Aug 2026:
- Best quality surf: Monday 24 Aug, 11PM (local time) - 3.5ft (1.0m), 6s period, S swell with cross-offshore winds.
- Most powerful swell: Friday 21 Aug, 11PM (local time) - 4.5ft (1.4m), 6s period, ENE swell with 146 kJ wave energy.
- Next surfable swell (1★+): Monday 24 Aug, 11PM (local time) - 3.5ft (1.0m), 6s 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 24) at 11PM. The primary swell is predicted to be 1.0m and 6s period with a secondary swell of 0.4m and 11s. Another secondary swell of 1.1m and 5s 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 1.4m 6s and forecast to arrive on Friday (Aug 21) at 11PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Saturday (Aug 22) at 2AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Mon 24th Aug) | 3.5ft (1.0m) 6s |
| Best Surf | 11PM (Mon 24th Aug) | 3.5ft (1.0m) 6s |
| Most Powerful | 11PM (Fri 21st Aug) | 4.5ft (1.4m) 6s |
Table - best surf conditions forecast for Road K over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s take a long, hard look at what’s on the menu at Road K over the next couple of weeks.
Truth be told, it’s a grim stretch. The entire 16-day window is a battle against poor surf conditions and messy wind. The water is sitting at 75°, which is a touch warmer than normal for this time of year, but that’s about the only thing that’s slightly out of the ordinary.
The whole run kicks off with next to nothing. We’re looking at a solid week of frustratingly small, short-period, and mostly cross-shore or onshore wind slop. The swell energy is weak, barely cracking 30 to 60 (36-66) on most days. It’s the kind of stuff that has you checking the forecast again just to make sure you didn’t miss a window. You didn’t.
The only glimmer of hope, and I mean a tiny glimmer, shows up on the afternoon of the 24th of August. A modest 3ft S swell creeps in with moderate energy (164 in the morning, 99 in the afternoon), but the wind is still cross or cross-off. It’s not clean, but it’s the best we’ve got for a whole week. After that, it’s back to the doldrums.
If you’re a beginner, stay home. The surf is too small and weak to be fun, and when it tries to push a little over 3ft, the wind ruins it.
The bigger pulse comes on the 1st of September. Swell height jumps to 5ft to 6ft from the SSW, with moderate energy in the 215-279 range. That’s a serious step up, but it’s still only rated as poor surf conditions. The wind is a cross-shore mess with a cross-chop, making it a real battle. For a sandbar that’s exposed, this setup looks more interesting for kite surfing than paddle surfing.
The absolute standout, if you can call it that, is the morning of the 2nd of September. The swell drops to 3ft from the SSW, but the wind goes glassy. Absolutely zero wind. That’s a major positive. For a few hours, the surface will be clean, even if the waves are small and mediocre. It’s the only time the whole forecast that the conditions line up for a truly clean session.
In summary, it’s a 16-day grind with very little payoff. The only real window is the glassy morning of September 2nd for a small, clean paddle. The 1st of September has the size, but it’s a messy, choppy affair. Good luck, you’ll need it.
Rusty.
Short Range ForecastLight rain (total 7mm), mostly falling on Sat night. Warm (max 25°C on Sun afternoon, min 19°C on Fri morning). Winds decreasing (fresh winds from the NNE on Fri morning, light winds from the SE by Sat afternoon). | Days 4-6 Weather SummaryMostly dry. Warm (max 25°C on Mon afternoon, min 20°C on Tue morning). Wind will be generally light. | ||||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | |||||||||||||||
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 9 | ENE 6 | E 6 | E 6 | E 5 | ESE 13 | S 4 | S 5 | SSE 6 | SSW 6 | S 6 | S 6 | SE 11 | SE 10 | SE 11 | SE 10 | SE 9 | SE 8 | SSE 5 | S 5 | SSW 5 |
Wave Graph  | |||||||||||||||||||||
 kJ | 19 | 137 | 92 | 32 | 14 | 16 | 20 | 27 | 119 | 64 | 78 | 43 | 29 | 28 | 18 | 15 | 30 | 30 | 42 | 53 | 48 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross | cross-on | on | cross-on | cross | cross-off | cross-off | cross | cross-off | cross-off | cross-on | cross-on | cross | cross-on | on | on | on | cross |
High Tide | 3:12PM0.92m | 3:41AM0.74m | 4:11PM0.94m | 4:40AM0.76m | 5:04PM0.97m | 5:32AM0.80m | 5:52PM1.01m | 6:18AM0.86m | 6:36PM1.05m | 7:00AM0.91m | 7:17PM1.08m | 7:40AM0.97m | 7:58PM1.10m | ||||||||
Low Tide | 8:52PM0.33m | 8:39AM0.28m | 10:06PM0.32m | 9:39AM0.28m | 11:16PM0.29m | 10:39AM0.26m | 00:01AM0.24m | 11:35AM0.21m | 00:35AM0.18m | 12:25PM0.16m | 1:08AM0.13m | 1:09PM0.11m | 1:42AM0.08m | ||||||||
 | |  | |  |  |  | |  |  |  | | | | | | | | | |  | |
 | 6:05 | — | — | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — |
 | — | 7:39 | — | — | 7:37 | — | — | 7:37 | — | — | 7:35 | — | — | 7:34 | — | — | 7:31 | — | — | 7:30 | — |
mm | — | — | — | — | 1 | 3 | 2 | 1 | — | — | — | — | — | — | — | — | — | — | 4 | 5 | 20 |
Temp °C | 20 | 21 | 21 | 20 | 21 | 21 | 23 | 25 | 25 | 23 | 25 | 24 | 22 | 24 | 24 | 24 | 25 | 24 | 24 | 24 | 25 |
Feels °C | 17 | 18 | 20 | 21 | 23 | 23 | 25 | 25 | 25 | 19 | 21 | 22 | 19 | 21 | 22 | 24 | 24 | 23 | 24 | 24 | 25 |
Swell 1 Height (m) Direction Period (s) | SSW 5 | SSE 6 | E 6 | E 6 | E 5 | ESE 8 | E 4 | ESE 5 | SSE 6 | SSW 6 | SE 11 | S 6 | SSW 6 | SE 10 | SE 11 | SSW 6 | SE 9 | SE 8 | SE 10 | ESE 7 | SSW 5 |
| kJ | 9 | 3 | 92 | 32 | 14 | 11 | 3 | 9 | 119 | 43 | 20 | 43 | 20 | 28 | 18 | 6 | 30 | 30 | 15 | 18 | 48 |
Swell 2 Height (m) Direction Period (s) | SE 9 | SSW 5 | SW 5 | ESE 8 | ESE 8 | SE 9 | ESE 7 | SE 12 | SE 12 | SE 7 | E 6 | SE 11 | SE 6 | ESE 6 | ESE 6 | SE 10 | E 6 | E 12 | E 12 | SE 10 | SE 6 |
| kJ | 19 | 3 | 1 | 12 | 12 | 3 | 11 | 23 | 22 | 36 | 1 | 30 | 9 | 7 | 4 | 15 | 3 | 3 | 3 | 24 | 37 |
Swell 3 Height (m) Direction Period (s) | SE 15 | SE 14 | SE 14 | SE 13 | SE 13 | ESE 13 | ESE 12 | ESE 8 | SE 12 | SE 12 | — | E 6 | SE 11 | E 6 | S 6 | E 6 | E 6 | E 8 | E 8 | E 11 | SE 10 |
| kJ | 8 | 8 | 8 | 7 | 7 | 16 | 15 | 7 | 22 | 21 | — | 3 | 29 | 3 | 3 | 3 | 1 | 1 | 1 | 2 | 32 |
Wind waves Height (m) Direction Period (s) | NE 5 | ENE 6 | NE 6 | — | — | ESE 5 | S 4 | S 5 | SSW 6 | SSW 6 | S 6 | — | — | SSW 6 | SW 4 | SW 3 | SSW 3 | S 4 | SSE 5 | S 5 | — |
| kJ | 53 | 137 | 152 | — | — | 5 | 20 | 27 | 77 | 64 | 78 | — | — | 20 | 8 | 2 | 5 | 16 | 42 | 53 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 718 | 1151 | 32 | 26 | 238 | 221 | 101 | 136 | 32 | 134 | 134 | 0 | 17 | 136 | 594 | 36 | 1166 | 260 | 59 | 142 | 259 |
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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