
Surf Forecasts:
Road K surf forecast from 17 Jul 2026:
- Best quality surf: Thursday 23 Jul, 2PM (local time) - 4ft (1.2m), 9s period, S swell with offshore winds.
- Most powerful swell: Wednesday 22 Jul, 11AM (local time) - 8ft (2.5m), 8s period, S swell with 1,021 kJ wave energy.
- Next surfable swell (1★+): Sunday 19 Jul, 5PM (local time) - 3.5ft (1.1m), 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 Sunday (Jul 19) at 5PM. The primary swell is predicted to be 1.1m and 7s period with a secondary swell of 0.1m and 13s. 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 2.5m 8s and forecast to arrive on Wednesday (Jul 22) at 11AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Sunday (Jul 19) at 8AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Sun 19th Jul) | 3.5ft (1.1m) 7s |
| Best Surf | 2PM (Thu 23rd Jul) | 4ft (1.2m) 9s |
| Most Powerful | 11AM (Wed 22nd Jul) | 8ft (2.5m) 8s |
Table - best surf conditions forecast for Road K over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s see what’s shakin’ for Road K.
Gotta be honest, the next 16 days are a real mixed bag, and for long stretches, it’s a bust. There’s a big gap of nothing from now until the end of the week. The first real chance to get wet doesn’t show up until Sunday the 19th, and even then, it’s nothing special. The one true standout, the only one worth getting out of bed for, is that big pulse of energy that hits on Wednesday the 22nd.
First, about the water. At Road K, it’s 73°, which is a touch warmer than usual for this time of year.
So, the first little bumps pop up on Sunday the 19th. The morning looks best with a clean 4ft SSW swell, period around 7 seconds, and a fresh offshore wind from the NW. The energy is moderate (146). It’s rideable, but nothing to get excited about. The afternoon stays clean with a 4ft S swell, but it’s still just ordinary.
Then we hit a dry patch. Monday the 20th through Tuesday the 21st is a total write-off – small, onshore, and messy. Forget it.
Now, mark your calendar for Wednesday the 22nd. That’s the day. The morning brings a solid 8ft S swell with a period of 8 seconds, but the wind is a fresh cross-shore from the WSW, making it lumpy. The combined energy is massive at 1578. That’s serious power. By the afternoon, the wind swings to a clean cross-offshore from the W, and the swell holds steady at 8ft, period 9 seconds, with an energy reading of 1787. The conditions clean up nicely. This is a big, powerful swell. At 8ft, this is for experienced surfers only. Beginners, stay on the beach.
Thursday the 23rd is still good, but dropping. The morning has a 5ft S swell, clean with a cross-offshore wind, and energy at 417. The afternoon is the real gem for the day: glassy conditions with a 4ft S swell and energy at 246. That glassy, clean surface is a major positive.
After that, from Friday the 24th, it’s mostly back to small, choppy, and onshore junk through the end of the month and into August. There’s a brief moment on Sunday the 27th afternoon with a tiny 2ft S swell and clean conditions, but it’s barely a ripple. Tuesday the 28th has a fresh offshore wind, but the swell is only 2ft and from the SE, so it’s just not enough.
The last week of the forecast is a total loss. Strong onshore winds and small, weak swell. The combined energy barely cracks 100 on most days. It’s not looking good for a paddle.
To sum it up: your best bet is the afternoon of Wednesday the 22nd and the morning of Thursday the 23rd. That’s the big, powerful, clean swell. The rest of the window is a whole lot of waiting.
Rusty.
Short Range ForecastHeavy rain (total 35mm), heaviest during Sat afternoon. Warm (max 26°C on Fri afternoon, min 20°C on Sun night). Winds increasing (light winds from the NNW on Fri afternoon, strong winds from the WSW by Sat night). | Days 4-6 Weather SummaryHeavy rain (total 48mm), heaviest during Tue night. Warm (max 26°C on Wed afternoon, min 19°C on Wed night). Winds increasing (light winds from the ENE on Mon morning, fresh winds from the SW by Wed morning). | ||||||||||||||||||||
Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | |||||||||||||||
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 5 | S 5 | S 5 | S 4 | SSE 5 | SSW 6 | SSW 7 | S 7 | SSW 7 | S 8 | S 8 | S 7 | S 7 | SE 6 | S 5 | S 8 | S 9 | S 9 | S 9 | S 8 | S 8 |
Wave Graph | |||||||||||||||||||||
9 | 14 | 12 | 15 | 12 | 146 | 139 | 131 | 63 | 93 | 72 | 51 | 34 | 38 | 55 | 1021 | 1018 | 614 | 348 | 169 | 77 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-on | cross | cross-on | cross-on | cross | off | off | cross-off | cross | on | on | on | on | cross-off | cross | cross-off | cross-off | cross-off | glassy | cross |
High Tide | 10:36AM1.06m | 10:54PM1.15m | 11:26AM1.05m | 11:43PM1.07m | 12:15PM1.03m | 00:32AM0.98m | 1:06PM1.00m | 1:23AM0.90m | 2:00PM0.97m | 2:18AM0.83m | 2:55PM0.95m | 3:16AM0.78m | 3:51PM0.95m | 4:14AM0.76m | |||||||
Low Tide | 4:09PM0.03m | 4:45AM-0.01m | 4:59PM0.08m | 5:28AM0.04m | 5:51PM0.15m | 6:12AM0.09m | 6:45PM0.20m | 6:56AM0.14m | 7:43PM0.25m | 7:42AM0.19m | 8:45PM0.29m | 8:30AM0.22m | 9:55PM0.30m | ||||||||
5:31 | — | — | 5:33 | — | — | 5:33 | — | — | 5:35 | — | — | 5:35 | — | — | 5:35 | — | — | 5:37 | — | — | |
— | 8:19 | — | — | 8:17 | — | — | 8:16 | — | — | 8:16 | — | — | 8:15 | — | — | 8:15 | — | — | 8:14 | — | |
mm | — | — | — | — | 28 | 7 | — | — | — | — | — | — | — | 9 | 34 | 5 | — | — | — | — | — |
Temp °C | 24 | 26 | 24 | 25 | 22 | 23 | 22 | 26 | 26 | 21 | 22 | 22 | 22 | 23 | 24 | 24 | 26 | 24 | 19 | 22 | 23 |
Feels °C | 21 | 24 | 20 | 24 | 20 | 21 | 20 | 21 | 22 | 19 | 20 | 20 | 21 | 25 | 23 | 22 | 23 | 22 | 15 | 21 | 21 |
Swell 1 Height (m) Direction Period (s) | SSW 5 | ESE 8 | SE 8 | SE 8 | SSE 5 | SE 13 | SSW 7 | S 7 | SSW 7 | S 8 | S 8 | S 7 | S 7 | S 7 | ESE 5 | S 8 | S 9 | S 9 | S 9 | S 8 | S 8 |
9 | 7 | 3 | 3 | 12 | 7 | 139 | 131 | 63 | 93 | 72 | 51 | 34 | 24 | 18 | 555 | 769 | 614 | 348 | 169 | 76 | |
Swell 2 Height (m) Direction Period (s) | SE 8 | SE 14 | SE 14 | SE 14 | SW 5 | E 8 | SE 13 | SE 13 | SE 8 | SE 12 | E 3 | SE 8 | SE 8 | SE 12 | SE 8 | E 5 | — | — | SE 8 | SE 7 | SE 7 |
3 | 8 | 8 | 7 | 10 | 1 | 7 | 6 | 2 | 6 | 1 | 3 | 2 | 6 | 3 | 2 | — | — | 69 | 77 | 77 | |
Swell 3 Height (m) Direction Period (s) | SE 15 | — | E 9 | E 9 | SE 8 | — | — | — | SE 12 | — | SE 12 | SE 12 | SE 12 | SE 12 | SE 11 | — | — | — | — | — | — |
8 | — | 2 | 1 | 3 | — | — | — | 6 | — | 6 | 6 | 6 | 5 | 5 | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | S 5 | S 5 | S 4 | — | SSW 6 | NW 3 | NW 3 | — | ENE 3 | — | SE 3 | SE 5 | SE 6 | S 5 | S 8 | S 9 | NW 3 | — | — | — |
— | 14 | 12 | 15 | — | 146 | 4 | 1 | — | 1 | — | 1 | 10 | 38 | 55 | 1021 | 1018 | 2 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2554 | 718 | 727 | 1167 | 142 | 317 | 56 | 0 | 75 | 26 | 59 | 273 | 2503 | 104 | 3 | 221 | 193 | 32 | 17 | 0 | 36 |
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.










