Surf Forecasts:
Jetty surf forecast from 14 Aug 2026:
- Best quality surf: Thursday 20 Aug, 8AM (local time) - 2.5ft (0.8m), 5s period, SSW swell with cross-offshore winds.
- Most powerful swell: Monday 17 Aug, 5AM (local time) - 4.5ft (1.4m), 6s period, S swell with 144 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 8AM (local time) - 2.5ft (0.8m), 5s 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 Thursday (Aug 20) at 8AM. The primary swell is predicted to be 0.8m and 5s period with a secondary swell of 0.5m and 6s. Another secondary swell of 0.3m 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 1.4m 6s and forecast to arrive on Monday (Aug 17) at 5AM. Winds are predicted to be cross-onshore 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 21) at 5AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Thu 20th Aug) | 2.5ft (0.8m) 5s |
| Best Surf | 8AM (Thu 20th Aug) | 2.5ft (0.8m) 5s |
| Most Powerful | 5AM (Mon 17th Aug) | 4.5ft (1.4m) 6s |
Table - best surf conditions forecast for Jetty over the next 16 days.
The Lowdown
Alright, Rusty here. Let's have a look at what's on the table for the next couple of weeks.
Frankly, it’s been a flat, quiet run and it’s going to stay that way for a while. The first real sign of life doesn't show up until Monday, August 17th, and even then it’s nothing to write home about. We’ve got a solid 4 days with pretty much nothing worth paddling out for right off the bat.
The water is sitting at a balmy 76°F, which is much warmer than normal for this time of year, so at least a dip won't be a shock to the system.
The only spot with any chance of a wave is Jetty. It's a breakwater setup, very consistent, and exposed to any south or southeast energy that comes its way. The first whiff of something rideable comes on Monday morning, August 17th. We’ve got a 5ft swell from the SSE, period is short at 7 seconds, so it’ll be a bit soft and bumpy. The energy reading is moderate at 287, but the wind is a clean cross-offshore from the WNW, which will keep the surface tidy. Still, it’s only rated as marginal, so don't expect gems. Later that afternoon it drops to a 4ft swell from the SE with a clean offshore wind from the north, which will be surfable but pretty ordinary.
The rest of that week stays small. Tuesday the 18th has tiny 2ft waves with clean conditions in the morning. Thursday the 20th shows a slight pulse: a 4ft swell from the south in the morning with a glassy offshore NNW wind at only 5 km/h (3 mph). That’s about as clean as it gets, but the wave quality is still just surfable. The combined energy is weak (114). Then repeating again on Friday the 28th of August – a 2ft SE swell with a glassy cross-offshore breeze in the morning giving you a clean surface (energy at 109). That afternoon the wind swings to a strong 30 km/h (19 mph) offshore from the NNW, which would be howling, but the swell is tiny.
Honestly, the whole 16-day window is a struggle. There is no standout period. The bigger swell on the 17th is the "best" wave height, but the quality is poor. The cleanest, most appealing conditions for a patient surfer are probably the glassy Thursday morning of the 20th, or the Friday morning of the 28th. For the long-range calls around the 28th and 29th, there’s some flicker of life but don’t hold your breath – it's a long way out.
Crowds at Jetty are "sometimes", but when the surf is this small and ordinary, it won't be busy.
For anyone with a kite, the afternoon of Sunday the 16th or the 23rd with moderate cross-onshore wind and choppy bumpy surf might look more interesting than a paddle session.
Stay patient.
Rusty.
Short Range ForecastModerate rain (total 14mm), heaviest on Sun night. Warm (max 25°C on Fri morning, min 20°C on Fri night). Winds increasing (calm on Sat night, fresh winds from the SE by Sun night). | Days 4-6 Weather SummaryModerate rain (total 13mm), heaviest on Mon morning. Warm (max 27°C on Wed night, min 19°C on Mon night). Winds decreasing (strong winds from the ESE on Mon morning, calm by Tue afternoon). | ||||||||||||||||||||
Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | |||||||||||||||
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) | ESE 9 | SE 9 | S 5 | S 6 | S 6 | SSE 6 | S 6 | S 4 | S 6 | S 6 | SSE 6 | S 6 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SE 9 | S 5 | SSW 5 | S 5 | SE 8 |
Wave Graph | |||||||||||||||||||||
8 | 13 | 3 | 3 | 3 | 4 | 6 | 10 | 108 | 94 | 62 | 35 | 34 | 35 | 41 | 29 | 23 | 49 | 35 | 25 | 18 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | cross-off | cross-off | on | cross | on | cross-on | on | cross | cross-off | cross-off | cross-off | cross-on | cross-on | cross-on | cross-on | cross-on | off | off | cross-off |
High Tide | 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 | 1:17PM0.98m | 1:39AM0.80m | 2:13PM0.94m | 2:38AM0.76m | |||||||
Low Tide | 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 | 6:06AM0.17m | 6:52PM0.27m | 6:53AM0.22m | 7:48PM0.31m | ||||||||
5:58 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | |
— | 7:50 | — | — | 7:49 | — | — | 7:47 | — | — | 7:45 | — | — | 7:45 | — | — | 7:43 | — | — | 7:42 | — | |
mm | — | — | — | — | — | — | — | — | 14 | 8 | — | — | — | — | — | — | — | 5 | 1 | — | — |
Temp °C | 25 | 25 | 25 | 21 | 23 | 23 | 23 | 24 | 24 | 22 | 21 | 20 | 22 | 24 | 24 | 24 | 24 | 27 | 24 | 27 | 25 |
Feels °C | 25 | 24 | 25 | 19 | 22 | 22 | 23 | 22 | 21 | 18 | 18 | 18 | 23 | 24 | 24 | 24 | 22 | 27 | 26 | 24 | 21 |
Swell 1 Height (m) Direction Period (s) | ESE 9 | SE 9 | SE 9 | SE 9 | E 3 | ESE 3 | S 6 | S 6 | — | S 6 | SSE 6 | S 6 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SE 7 | SE 7 | SE 6 | S 5 | S 5 |
8 | 13 | 3 | 3 | 1 | 1 | 6 | 6 | — | 94 | 62 | 35 | 34 | 35 | 41 | 29 | 15 | 11 | 10 | 25 | 11 | |
Swell 2 Height (m) Direction Period (s) | S 5 | SE 13 | S 5 | S 6 | SE 9 | SSE 6 | SE 9 | SSE 8 | — | — | — | SSE 7 | SE 13 | E 4 | SE 11 | SE 10 | SE 9 | SE 9 | SE 9 | SE 6 | SE 8 |
2 | 7 | 2 | 2 | 3 | 4 | 3 | 7 | — | — | — | 21 | 7 | 6 | 31 | 25 | 23 | 13 | 12 | 9 | 18 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | SE 6 | S 6 | SE 9 | SE 6 | SE 6 | — | — | — | — | — | SSE 13 | E 4 | E 4 | E 4 | — | — | SE 9 | — |
— | — | — | 1 | 2 | 3 | 2 | 1 | — | — | — | — | — | 16 | 1 | 1 | 1 | — | — | 12 | — | |
Wind waves Height (m) Direction Period (s) | — | S 5 | — | E 3 | — | — | — | S 4 | S 6 | — | — | — | E 4 | — | — | — | S 3 | S 5 | SSW 5 | — | — |
— | 4 | — | 2 | — | — | — | 10 | 108 | — | — | — | 6 | — | — | — | 5 | 49 | 35 | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2546 | 1164 | 828 | 763 | 3402 | 945 | 1455 | 1179 | 246 | 58 | 57 | 4 | 4 | 75 | 73 | 732 | 872 | 732 | 14 | 114 | 732 |
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.











