Surf Forecasts:
Jetty surf forecast from 13 Aug 2026:
- Best quality surf: Thursday 13 Aug, 2PM (local time) - 3ft (0.9m), 5s period, SW swell with cross-offshore winds.
- Most powerful swell: Monday 17 Aug, 2AM (local time) - 6ft (1.9m), 7s period, SSW swell with 348 kJ wave energy.
- Next surfable swell (1★+): Thursday 13 Aug, 2PM (local time) - 3ft (0.9m), 5s period with SW swell.
Best Forecast Surf Conditions for Jetty this week:
The surf forecast for Jetty over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 13) at 2PM. The primary swell is predicted to be 0.9m and 5s period with a secondary swell of 0.5m and 5s. Another secondary swell of 0.1m and 8s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Jetty in the next 16 days are 1.9m 7s and forecast to arrive on Monday (Aug 17) at 2AM. 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 5s period and expected on Saturday (Aug 15) at 2PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2PM (Thu 13th Aug) | 3ft (0.9m) 5s |
| Best Surf | 2PM (Thu 13th Aug) | 3ft (0.9m) 5s |
| Most Powerful | 2AM (Mon 17th Aug) | 6ft (1.9m) 7s |
Table - best surf conditions forecast for Jetty over the next 16 days.
The Lowdown
Alright folks, Rusty here, and I’ve got the goods for the Jetty region. It’s a long-range look, so buckle up, ’cause we’ve got a lot of quiet days before any real noise.
Overall, the pickup is slim. This area is going to see a fair bit of small, choppy, wind-affected junk for the first week or more. We’re in a dry spell and the wait might feel long, but there’s a fleeting chance of a clean-up later on.
We start with Thursday the 13th of August. The swell is tiny, about 2ft to 3ft from the SSW with a short 5-second period. It’s weak, only 35-55 combined energy. The wind is cross or cross-off, but the surf is just poor. Nothing happening yet.
Friday the 14th brings even less - a pathetic 0.7ft from the ESE, even though the wind can go offshore in the morning from the NNW. It’s too small to bother with, with energy barely reaching 19. Saturday is equally flat, with 0.3ft to 0.7ft waves. Sunday the 16th shows a pulse, with 4ft on the afternoon from the S, but the wind is a raw 35 km/h cross-onshore. It’s fresh, lumpy, and ugly (energy 65).
Now here is our first real glimmer. Monday the 17th of August (Jetty) . The morning offers a clean 3ft southerly swell with a 7-second period. The wind is light and off from the north, making for clean conditions. The energy is a solid 91, so you’ll feel the push. It’s very consistent here, so you won’t be waiting around. But it's only for the real keen early birds, as the afternoon comes back onshore. This is your best bet in the first week, but it's just "surfable" – not the standout.
Then we’re back to a long gap of poor surf with cross-onshore winds and no quality until Saturday the 22nd of August. That morning we see a clean 4ft from the south with light NNE winds, cross-off again. Another early window of cleanish waves (energy 101). After that, it’s another flat or messy pattern.
The real potential outlier, and my single standout for the whole run, lands way out on Thursday the 27th of August (Jetty) . We have a 4ft to 4ft swell pumping in from the east with energy hitting 140 to 163 – that’s moderate to strong juice. The period is a weak 6-7 seconds, so the power comes from the size and not the travel. The caveat? Risk of thunderstorms and some lumpy afternoon winds. The morning does offer a light cross-shore, so if the stars align, those 4ft waves could have a bit of shape before it blows out. It’s a long-range call, so don't get too attached yet, but it’s the biggest energy spike on the chart. For experienced surfers only, as anything over 3ft and especially that 4ft under messy wind starts to get a bit heavy for the groms.
Water temp? For the Jetty, it’s sitting right around average for the time of year, so no wild surprises there when you first hit the water.
Bottom line: don't plan a dawn patrol for ’til you see next week. The first week is a write-off. Your best shot is Monday the 17th morning, and if you're feeling optimistic, Thursday the 27th dawn. Otherwise, it’s a lot of glassy flat spells and choppy scraps. Keep your eyes peeled, conditions can flip. This is Rusty, signing off.
Short Range ForecastLight rain (total 5mm), mostly falling on Wed night. Warm (max 29°C on Thu afternoon, min 18°C on Fri night). Winds decreasing (fresh winds from the NNE on Fri night, calm by Sat afternoon). | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Sun night. Warm (max 26°C on Mon afternoon, min 22°C on Sat night). Winds decreasing (strong winds from the SW on Sun night, calm by Mon night). | ||||||||||||||||||
Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | ||||||||||||||
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) | S 4 | SSW 5 | SW 5 | SSW 5 | ESE 9 | SE 9 | SSW 4 | S 6 | S 7 | S 6 | S 6 | S 5 | SSW 7 | S 7 | S 7 | S 7 | S 6 | S 6 | SE 12 |
Wave Graph | |||||||||||||||||||
8 | 20 | 33 | 8 | 8 | 14 | 3 | 3 | 3 | 12 | 18 | 62 | 348 | 91 | 85 | 60 | 28 | 19 | 71 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-off | off | off | cross-on | cross-off | cross-off | glassy | cross-on | cross-on | cross-on | cross-off | cross-off | cross-on | glassy | cross | cross-on | cross-on |
High Tide | 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 | 11:39AM1.07m | 11:58PM0.96m | 12:27PM1.02m | 00:46AM0.87m | ||||||
Low Tide | 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 | 5:14PM0.15m | 5:24AM0.12m | 6:01PM0.21m | |||||||
— | 5:58 | — | — | 5:58 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — | |
7:52 | — | 7:52 | — | — | 7:50 | — | — | 7:49 | — | — | 7:47 | — | — | 7:45 | — | — | 7:45 | — | |
mm | 2 | 1 | — | — | — | — | 2 | — | — | — | — | — | 1 | — | — | 1 | — | — | — |
Temp °C | 25 | 25 | 29 | 28 | 24 | 26 | 25 | 20 | 24 | 22 | 23 | 23 | 24 | 25 | 26 | 26 | 25 | 24 | 24 |
Feels °C | 23 | 25 | 28 | 25 | 23 | 26 | 23 | 16 | 23 | 20 | 20 | 18 | 20 | 27 | 28 | 27 | 27 | 25 | 25 |
Swell 1 Height (m) Direction Period (s) | SE 8 | SSW 5 | SSW 5 | SSW 5 | S 5 | S 5 | SSW 4 | SE 9 | S 7 | S 6 | SSE 9 | SE 8 | S 7 | S 7 | S 7 | S 7 | S 6 | S 6 | S 6 |
3 | 20 | 15 | 8 | 4 | 2 | 3 | 3 | 3 | 12 | 7 | 3 | 212 | 91 | 85 | 60 | 28 | 19 | 20 | |
Swell 2 Height (m) Direction Period (s) | SE 11 | SE 8 | SE 8 | ESE 9 | ESE 9 | SE 9 | SE 9 | S 6 | SE 9 | SE 9 | — | — | — | — | — | S 16 | SE 9 | SE 9 | SE 12 |
5 | 3 | 3 | 7 | 8 | 14 | 3 | 2 | 3 | 3 | — | — | — | — | — | 5 | 12 | 13 | 71 | |
Swell 3 Height (m) Direction Period (s) | SE 14 | SE 10 | SE 10 | SE 13 | SE 13 | SE 13 | S 6 | S 6 | ENE 5 | — | — | — | — | — | — | SE 15 | SSE 14 | SSE 13 | E 3 |
8 | 4 | 4 | 7 | 7 | 7 | 1 | 1 | 2 | — | — | — | — | — | — | 9 | 20 | 17 | 1 | |
Wind waves Height (m) Direction Period (s) | S 4 | WSW 5 | SW 5 | — | — | SSW 5 | NE 2 | NE 4 | — | — | S 6 | S 5 | SSW 7 | — | — | — | — | E 3 | — |
6 | 8 | 33 | — | — | 2 | 1 | 7 | — | — | 18 | 62 | 348 | — | — | — | — | 2 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 740 | 865 | 4 | 2348 | 1106 | 3373 | 867 | 1621 | 3368 | 1602 | 626 | 1636 | 118 | 0 | 75 | 0 | 42 | 304 | 117 |
Best forecast wave conditions in Long Island New York | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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Information about the Jetty Surf forecast
The above surf forecast table for Jetty provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Jetty can be found by selecting the local surf guide option on the grey menu. Our Jetty 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 (Jetty) 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 Jetty 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.
Jetty is 15 km (9 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.











