Surf Forecasts:
Road K surf forecast from 12 Jul 2026:
- Best quality surf: Wednesday 15 Jul, 11PM (local time) - 5.5ft (1.7m), 6s period, SW swell with cross-offshore winds.
- Most powerful swell: Wednesday 15 Jul, 11PM (local time) - 5.5ft (1.7m), 6s period, SW swell with 226 kJ wave energy.
- Next surfable swell (1★+): Wednesday 15 Jul, 11PM (local time) - 5.5ft (1.7m), 6s period with SW 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 Wednesday (Jul 15) at 11PM. The primary swell is predicted to be 1.7m and 6s period with a secondary swell of 1.3m and 6s. Another secondary swell of 0.3m and 8s 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 1.7m 6s and forecast to arrive on Wednesday (Jul 15) 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 0.5m 3s period and expected on Thursday (Jul 16) at 11PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Wed 15th Jul) | 5.5ft (1.7m) 6s |
| Best Surf | 11PM (Wed 15th Jul) | 5.5ft (1.7m) 6s |
| Most Powerful | 11PM (Wed 15th Jul) | 5.5ft (1.7m) 6s |
Table - best surf conditions forecast for Road K over the next 16 days.
Right then, let’s have a look at what’s on offer for Road K over the next couple of weeks.
Honestly, it’s a pretty grim stretch for a while. The forecast is showing a long, dry spell with nothing worth paddling out for. The first couple of weeks are filled with tiny, weak swells, mostly under 3 ft, and the wind is nearly always cross or cross-on, keeping things messy and chopped up. The combined wave energy is mostly weak, sitting in the 20s to 50s, with only a few moments climbing into the moderate triple digits, but even then the conditions are poor. You’re looking at a solid 15-day gap with no decent surf. The water temperature is about average for this time of year, nothing unusual.
There is a tiny glimmer at the very end. On Monday morning, 27 July, we finally see a jump in swell. The wind will be glassy, right out of the east at just 3 mph, which is a huge win for clean conditions. The swell will be coming from the south at 5 ft with a period of 8 seconds, moderate energy (284). It’s honestly the only standout in the entire 16-day window, and it’s over a week away, so treat it as promising but not locked in. Road K is a sandbar (Big Island), very consistent, and exposed to the SSE, which works well with this south swell. The offshore wind direction is NNW, so that glassy east wind will be cross-off, keeping it clean. The water is about average for the time of year.
For that one window, it’s a beginner-friendly wave, but the south swell at 5 ft might be a little punchy for absolute beginners. Crowds are often here, so expect company. The 8-second period is short, so waves will be a bit crumbly, but with that glassy surface, it’s the best you’re going to get. If you’re desperate for a surf, that’s your shot.
Outside of that, nothing else is even close to worth a mention. The rest of the time, it’s either flat, too small, or blown out. For a spot that’s very consistent, this is a rare blank run.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Tue afternoon, min 20°C on Sun morning). Winds increasing (light winds from the SSW on Sun night, fresh winds from the SW by Tue afternoon). | Days 5-7 Weather SummaryLight rain (total 7mm), mostly falling on Thu morning. Warm (max 29°C on Wed afternoon, min 19°C on Thu morning). Winds decreasing (strong winds from the SW on Tue night, light winds from the NW by Fri afternoon). | ||||||||||||||||||||
Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Sat 18 | |||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | SE 10 | SE 10 | SE 10 | SE 10 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SW 6 | SW 6 | SSW 6 | SSW 6 | SSW 6 | SW 5 | S 5 | SSW 6 | SSW 6 | ESE 8 | ESE 8 | SSW 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 15 | 15 | 14 | 15 | 14 | 31 | 13 | 13 | 31 | 141 | 80 | 114 | 110 | 33 | 38 | 15 | 10 | 8 | 8 | 7 | 9 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | on | on | cross-on | cross-on | cross | cross | cross-on | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-on | glassy |
High Tide | 6:08AM0.91m | 6:35PM1.23m | 7:04AM0.96m | 7:29PM1.26m | 7:59AM1.00m | 8:22PM1.27m | 8:52AM1.04m | 9:14PM1.25m | 9:45AM1.06m | 10:04PM1.21m | 10:36AM1.06m | 10:54PM1.15m | 11:26AM1.05m | ||||||||
Low Tide | 11:37PM0.07m | 11:32AM0.01m | 00:41AM0.02m | 12:33PM-0.01m | 1:38AM-0.02m | 1:32PM-0.03m | 2:29AM-0.05m | 2:26PM-0.03m | 3:16AM-0.06m | 3:18PM-0.01m | 4:01AM-0.04m | 4:09PM0.03m | 4:45AM-0.01m | 4:59PM0.08m | |||||||
 | | |  | | |  | | | | |  |  |  | | | | | |  | | |
 | — | 5:28 | — | — | 5:28 | — | — | 5:30 | — | — | 5:31 | — | — | 5:31 | — | — | 5:31 | — | — | 5:33 | — |
 | 8:22 | — | 8:22 | — | — | 8:21 | — | — | 8:21 | — | — | 8:20 | — | — | 8:19 | — | — | 8:19 | — | — | 8:17 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 5 | — | — | — | — | — | 1 | 1 |
Temp °C | 23 | 22 | 23 | 22 | 22 | 22 | 22 | 23 | 26 | 25 | 27 | 29 | 29 | 23 | 27 | 27 | 22 | 26 | 25 | 18 | 17 |
Feels °C | 22 | 21 | 20 | 19 | 21 | 20 | 19 | 19 | 22 | 21 | 26 | 28 | 28 | 21 | 24 | 24 | 20 | 24 | 22 | 15 | 16 |
Swell 1 Height (m) Direction Period (s) | SSW 6 | ESE 5 | SSW 6 | SE 5 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SSW 6 | SSW 6 | SSW 5 | S 5 | SSW 6 | SSW 6 | SSW 5 | SSW 5 | SSW 7 |
| kJ | 14 | 8 | 14 | 10 | 14 | 31 | 13 | 13 | 21 | 12 | 20 | 19 | 110 | 33 | 21 | 15 | 10 | 6 | 5 | 4 | 9 |
Swell 2 Height (m) Direction Period (s) | SE 4 | SSW 7 | SE 10 | SSW 7 | SSW 6 | E 7 | SE 4 | E 7 | SE 5 | E 7 | S 17 | SE 16 | SE 8 | SE 8 | SE 8 | SE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 |
| kJ | 3 | 15 | 14 | 15 | 8 | 1 | 1 | 1 | 1 | 1 | 6 | 11 | 10 | 10 | 9 | 9 | 7 | 7 | 7 | 7 | 6 |
Swell 3 Height (m) Direction Period (s) | SE 10 | SE 10 | E 7 | SE 10 | ESE 4 | ESE 5 | E 7 | E 7 | E 8 | — | — | — | SE 16 | SE 15 | SE 15 | SE 15 | NE 4 | SE 14 | SE 14 | S 7 | SE 13 |
| kJ | 15 | 14 | 1 | 15 | 4 | 2 | 1 | 1 | 1 | — | — | — | 11 | 9 | 9 | 9 | 1 | 8 | 8 | 4 | 7 |
Wind waves Height (m) Direction Period (s) | ESE 4 | — | SE 5 | — | S 5 | S 6 | SSW 3 | SSW 3 | SSW 4 | SW 6 | SW 6 | SSW 6 | — | — | SW 5 | NW 3 | NW 3 | — | — | — | SW 3 |
| kJ | 9 | — | 8 | — | 2 | 20 | 3 | 7 | 31 | 141 | 80 | 114 | — | — | 38 | 1 | 2 | — | — | — | 2 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 636 | 682 | 851 | 777 | 775 | 774 | 385 | 230 | 336 | 260 | 329 | 76 | 17 | 839 | 755 | 677 | 245 | 2554 | 718 | 718 | 36 |
Best forecast wave conditions in Long Island New York | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Road K surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
Nearest