Surf Forecasts:
Road K surf forecast from 30 Aug 2026:
- Best quality surf: Sunday 30 Aug, 11PM (local time) - 3ft (0.9m), 5s period, SSW swell with cross-offshore winds.
- Most powerful swell: Wednesday 2 Sep, 2PM (local time) - 5.5ft (1.7m), 7s period, ESE swell with 261 kJ wave energy.
- Next surfable swell (1★+): Sunday 30 Aug, 11PM (local time) - 3ft (0.9m), 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 0.9m 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 1.7m 7s and forecast to arrive on Wednesday (Sep 02) at 2PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 5s period and expected on Sunday (Aug 30) at 11PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Sun 30th Aug) | 3ft (0.9m) 5s |
| Best Surf | 11PM (Sun 30th Aug) | 3ft (0.9m) 5s |
| Most Powerful | 2PM (Wed 2nd Sep) | 5.5ft (1.7m) 7s |
Table - best surf conditions forecast for Road K over the next 16 days.
The Lowdown
Alright, let's get this out there.
Honestly, looking at the charts for Road K over the next couple of weeks is a bit of a heartbreaker. We’ve got a long stretch of flat, weak, and messy conditions to start with. The good news is the water temp is sitting at 71°F, which is just about average for this time of year, so you won’t need the full rubber just yet, but you will need patience.
The first few days are a total write-off. From Sunday the 30th right through to Tuesday the 1st, we're staring at tiny, junky 1ft SSE windswell with a short 8-second period. The energy is weak, reading between 24 and 36 (weak energy), and there’s no punch to it at all. To make it worse, the wind is all over the shop – cross, cross-on, and choppy. There’s a moment of glass on Tuesday morning but with only 1ft on offer, it’s not worth paddling out for. You’d be floating more than surfing.
Then things get interesting, but not in a good way. On Wednesday the 2nd, a pulse of swell fills in – 5ft to 6ft from the ESE – but the period is a junky 6 to 7 seconds. The combined energy jumps to a strong 303 (strong wave energy) on Wednesday morning, but it's a mess. The morning wind is a fresh 35 km/h cross-onshore, turning the place into lumpy chaos. The afternoon cleans up a bit with a NE cross-off, but the short period means it's still just a crumbly, weak-faced wave. This is more of a washing machine than a point break.
The swell backs down again on Thursday the 3rd, with a drop to 4ft, still from the ESE, but the wind stays onshore and it's just not coming together. This size and energy (around 134 to 152, moderate) with these winds is just pure frustration.
We do get a couple of small windows of clean surf on Friday the 4th and Saturday the 5th. The winds go offshore from the NNW – light to moderate, and the conditions will be clean. But the swell drops right back down to 2ft to 2ft. The Friday morning is your best bet, with 2ft from the ESE, 7-second period, and a NW cross-off. It’s small and gutless, the combined energy is only 67 (weak energy), but it's clean and at least you'll get a few crumbly little walls to yourself. This is a longboard-only morning, and only if you’re desperate. Saturday offers similar 2ft but the period drops to 6 seconds, and it’s just not worth it. After that, it's back to tiny, un-rideable slop for the rest of the weekend.
Now, looking ahead to the more distant horizon, there’s one interesting blip. On Monday the 8th of September, we see a bump in size again to 4ft from the S with a 6-second period. The morning looks promising with a NE cross-off and clean conditions. That’s decent energy at 164 (moderate wave energy). But the afternoon sees it jump to 5ft with a 7-second period, and the wind swings SE cross-on, chopping it all up. The window is tight – just that Monday morning looks to have some push behind it. It’s still short-period, so it will be a bit crumbly on those beach breaks, but it's the most size we'll see in this whole stretch. It’s the only time it might approach a fun, punchy wave.
But then the 9th rolls in with 5ft onshore wind and the whole thing falls apart into a choppy mess. After that, the swell backs off again and we’re back to small, weak, and cross-shore junk for the rest of the window. There's no major swell on the charts, just those two pulses of short-period S/SE energy. The water is average temp for the time of year. It’s one of those stretches where you either get really creative on a longboard, or you find something else to do. The Friday the 4th morning is clean but tiny, so if you’re looking for a wave, that Monday the 8th morning is the only one with any real size and form. It’s not a standout, but it’s the best of a poor lot. Keep the expectations low and you won’t be disappointed.
Until next time, keep the wetsuit handy and the wax dry.
Rusty.
Short Range ForecastLight rain (total 6mm), mostly falling on Tue night. Warm (max 26°C on Sun night, min 21°C on Mon morning). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 18mm), heaviest on Wed morning. Warm (max 25°C on Thu night, min 19°C on Fri night). Mainly fresh winds. | ||||||||||||||||||||
Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | |||||||||||||||
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 | SSW 5 | SE 8 | SE 8 | SE 7 | SE 7 | SE 8 | SE 12 | ESE 6 | ESE 7 | ESE 7 | ESE 7 | SE 8 | ESE 7 | ESE 7 | ESE 7 | S 6 | E 8 | E 8 | E 8 |
Wave Graph | |||||||||||||||||||||
24 | 18 | 30 | 17 | 23 | 19 | 7 | 17 | 72 | 205 | 247 | 117 | 131 | 101 | 74 | 43 | 26 | 22 | 20 | 20 | 18 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | off | cross | on | glassy | glassy | cross-on | on | cross-on | cross-off | cross-on | cross-on | cross | off | cross-off | off | off | off | cross-off | cross-off |
High Tide | 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 | 3:04PM1.06m | 3:39AM0.85m | |||||||
Low Tide | 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 | 7:46AM0.15m | 8:52PM0.20m | ||||||||
6:13 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — | 6:18 | — | — | 6:18 | — | — | 6:20 | — | — | |
— | 7:25 | — | — | 7:23 | — | — | 7:22 | — | — | 7:21 | — | — | 7:19 | — | — | 7:17 | — | — | 7:15 | — | |
mm | — | — | 1 | — | — | — | — | — | 5 | 8 | 2 | 2 | 4 | — | 2 | — | — | — | — | — | — |
Temp °C | 23 | 23 | 26 | 21 | 22 | 22 | 23 | 24 | 23 | 22 | 22 | 21 | 23 | 23 | 25 | 22 | 25 | 23 | 20 | 23 | 22 |
Feels °C | 20 | 19 | 23 | 21 | 23 | 22 | 26 | 26 | 24 | 23 | 24 | 20 | 23 | 23 | 28 | 21 | 23 | 20 | 16 | 20 | 19 |
Swell 1 Height (m) Direction Period (s) | SE 8 | SE 8 | SSW 5 | SSW 5 | S 4 | SE 7 | SE 7 | SSW 5 | SE 12 | SE 11 | SE 10 | ESE 7 | ESE 7 | SE 8 | ESE 7 | ESE 7 | ESE 7 | S 6 | S 6 | SSW 6 | E 8 |
24 | 18 | 30 | 7 | 6 | 19 | 7 | 7 | 72 | 96 | 50 | 117 | 131 | 101 | 74 | 43 | 26 | 22 | 20 | 12 | 18 | |
Swell 2 Height (m) Direction Period (s) | S 6 | — | SE 8 | SE 8 | SE 8 | S 4 | S 4 | SE 8 | SSW 5 | SSW 5 | SSW 5 | SE 9 | SSW 5 | E 6 | SE 8 | SSW 5 | S 5 | ESE 7 | E 8 | E 8 | SSW 7 |
6 | — | 17 | 17 | 23 | 3 | 1 | 17 | 4 | 2 | 2 | 74 | 3 | 19 | 25 | 13 | 14 | 15 | 18 | 20 | 15 | |
Swell 3 Height (m) Direction Period (s) | — | E 9 | — | — | — | — | SE 8 | SE 13 | — | — | — | SSW 5 | — | SE 9 | — | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 |
— | 2 | — | — | — | — | 3 | 7 | — | — | — | 3 | — | 29 | — | 11 | 11 | 10 | 10 | 9 | 9 | |
Wind waves Height (m) Direction Period (s) | SW 3 | SSW 4 | — | — | — | — | — | — | E 5 | ESE 6 | ESE 7 | — | — | SSW 5 | SSW 4 | — | NW 3 | NW 3 | NW 3 | — | — |
2 | 16 | — | — | — | — | — | — | 37 | 205 | 247 | — | — | 3 | 15 | — | 1 | 2 | 2 | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 594 | 2548 | 0 | 636 | 727 | 313 | 636 | 263 | 222 | 131 | 72 | 103 | 59 | 59 | 0 | 0 | 0 | 0 | 0 | 753 | 225 |
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.











