Surf Forecasts:
Jetty surf forecast from 11 Aug 2026:
- Best quality surf: Monday 17 Aug, 2PM (local time) - 4.5ft (1.4m), 7s period, S swell with offshore winds.
- Most powerful swell: Monday 17 Aug, 11AM (local time) - 7ft (2.1m), 8s period, SSW swell with 487 kJ wave energy.
- Next surfable swell (1★+): Tuesday 11 Aug, 5AM (local time) - 2.5ft (0.8m), 6s period with SSW 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 Tuesday (Aug 11) at 5AM. The primary swell is predicted to be 0.8m and 6s period with a secondary swell of 0.6m and 6s. Another secondary swell of 0.1m and 9s 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 2.1m 8s and forecast to arrive on Monday (Aug 17) at 11AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Friday (Aug 14) at 11AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Tue 11th Aug) | 2.5ft (0.8m) 6s |
| Best Surf | 2PM (Mon 17th Aug) | 4.5ft (1.4m) 7s |
| Most Powerful | 11AM (Mon 17th Aug) | 7ft (2.1m) 8s |
Table - best surf conditions forecast for Jetty over the next 16 days.
The Lowdown
Alright folks, Rusty here. Gotta be straight with you – this forecast window is lookin’ pretty grim for a paddle. We’ve got a solid two-week stretch of flat to tiny, messy conditions coming up, and only a couple of glimmers way out there that might be worth keeping an eye on.
Right off the bat, from Tuesday the 11th all the way through to Saturday the 22nd of August, it’s a write-off. We’re talking knee-high slop, weak onshore wind, and choppy surfaces. The combined swell energy is pitiful, barely cracking 20 (19 to 23) for most of the first week, and the wind is just junk – cross-shore, cross-on, you name it. You’d be better off waxing your car than your board.
Now, there is one little blip on the radar. On Monday morning, August 17th, the Jetty sees a jump in size. The swell hits 7ft out of the SSW, with a combined energy reading of 730 – that’s a moderate punch. But here’s the catch: that’s 7ft, which is getting into expert-only territory, and the wind is a light cross-off from the NW. The period is only 8 seconds, so it’ll be a bit lumpy and won’t have that groundswell drive. It’s the only day with any real height, but the quality is marked as marginal. Honestly, for a spot like the Jetty, that size with that period could be a bit of a washing machine. It’s a maybe, but a big maybe for experienced guys only.
The water temp is not worth mentioning given the non-existent surf, but we can circle back to it if we ever get a clean wave.
We then hit another flat spell until Tuesday, August 25th. That afternoon looks like our next chance. The swell is 5ft from the SSW, energy hits 188, and the wind goes glassy – dead calm from the NW (3 mph). That’s as good as wind gets. The period is still short at 6 seconds, so it won't be a classic, but with glassy conditions, you might snag a few clean, crumbly 5ft waves. It’s surfable but ordinary, so temper expectations.
Wednesday the 26th morning keeps that hope alive with a clean 3ft wave, but the size is small again.
Bottom line: it’s a long wait. If you’ve got the gear and the skill, Monday August 17th offers the most size, but it’s a beast. For everyone else, the glassy afternoon on Tuesday the 25th of August is the most user-friendly stand-out, but it’s a long way off and the waves are still ordinary. Keep the board waxed, but don’t hold your breath.
- Rusty
Short Range ForecastLight rain (total 5mm), mostly falling on Thu morning. Warm (max 28°C on Tue afternoon, min 21°C on Thu morning). Winds decreasing (fresh winds from the SW on Tue afternoon, calm by Wed afternoon). | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Thu night. Warm (max 26°C on Fri afternoon, min 18°C on Fri night). Winds decreasing (fresh winds from the NNW on Fri night, light winds from the W by Sun morning). | ||||||||||||||||||
Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | ||||||||||||||
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 6 | S 6 | S 6 | S 5 | S 5 | S 15 | S 6 | SSW 5 | S 5 | S 5 | S 5 | S 5 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | S 6 |
Wave Graph  | |||||||||||||||||||
 kJ | 34 | 15 | 16 | 20 | 9 | 5 | 23 | 42 | 13 | 12 | 11 | 12 | 40 | 54 | 38 | 25 | 23 | 22 | 233 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross | off | cross-off | cross-on | cross-on | on | cross-on | cross | off | off | off | off | off | cross-off | cross | cross-on | cross-on |
High Tide | 6:51AM0.99m | 7:14PM1.23m | 7:43AM1.05m | 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 | |||||||
Low Tide | 00:34AM0.06m | 12:27PM0.04m | 1:27AM0.01m | 1:25PM0.01m | 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 | ||||||
 |  |  |  | | |  |  |  | | | |  | | | | | | | |
 | — | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — | 6:00 | — | — | 6:01 | — | — |
 | 7:55 | — | 7:53 | — | — | 7:52 | — | — | 7:52 | — | — | 7:50 | — | — | 7:49 | — | — | 7:47 | — |
mm | — | — | — | 1 | — | — | 1 | 3 | — | 2 | — | — | — | — | — | — | — | — | 2 |
Temp °C | 27 | 26 | 28 | 26 | 24 | 26 | 25 | 22 | 24 | 25 | 23 | 26 | 22 | 20 | 25 | 25 | 24 | 24 | 25 |
Feels °C | 25 | 26 | 29 | 25 | 23 | 26 | 23 | 22 | 23 | 25 | 17 | 21 | 15 | 14 | 21 | 22 | 22 | 20 | 23 |
Swell 1 Height (m) Direction Period (s) | S 6 | S 6 | SE 9 | S 5 | S 5 | S 5 | SE 8 | S 5 | S 5 | S 5 | S 5 | S 5 | S 7 | S 7 | S 7 | S 7 | S 7 | SE 9 | — |
| kJ | 18 | 15 | 3 | 20 | 9 | 5 | 3 | 28 | 13 | 12 | 11 | 12 | 40 | 54 | 38 | 25 | 23 | 3 | — |
Swell 2 Height (m) Direction Period (s) | SE 10 | SE 9 | E 12 | SE 9 | SE 8 | SE 8 | SE 11 | SE 8 | SE 8 | ESE 9 | ESE 9 | SE 9 | — | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | — |
| kJ | 4 | 3 | 3 | 3 | 3 | 3 | 5 | 3 | 3 | 7 | 8 | 3 | — | 3 | 3 | 3 | 3 | 3 | — |
Swell 3 Height (m) Direction Period (s) | E 8 | E 8 | E 8 | — | — | S 15 | SE 14 | SE 10 | SE 10 | SE 13 | SE 13 | ENE 4 | — | S 12 | S 12 | — | — | — | — |
| kJ | 1 | 1 | 1 | — | — | 4 | 8 | 4 | 4 | 7 | 7 | 1 | — | 3 | 3 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | S 6 | — | S 6 | — | — | — | S 6 | SSW 5 | — | SSW 5 | NE 3 | NNW 2 | NNW 3 | — | — | — | — | S 7 | S 6 |
| kJ | 34 | — | 16 | — | — | — | 23 | 42 | — | 9 | 2 | 1 | 1 | — | — | — | — | 22 | 233 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 732 | 828 | 2564 | 763 | 763 | 1164 | 789 | 2538 | 1637 | 787 | 672 | 763 | 4 | 54 | 4 | 14 | 740 | 1179 | 1170 |
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.
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