Surf Forecasts:
Jetty surf forecast from 18 Aug 2026:
- Best quality surf: Tuesday 18 Aug, 11AM (local time) - 2.5ft (0.7m), 7s period, SSE swell with glassy winds.
- Most powerful swell: Saturday 22 Aug, 11PM (local time) - 4.5ft (1.3m), 6s period, ESE swell with 130 kJ wave energy.
- Next surfable swell (1★+): Tuesday 18 Aug, 11AM (local time) - 2.5ft (0.7m), 7s period with SSE 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 18) at 11AM. The primary swell is predicted to be 0.7m and 7s period with a secondary swell of 0.2m and 4s. Another secondary swell of 0.3m and 4s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Jetty in the next 16 days are 1.3m 6s and forecast to arrive on Saturday (Aug 22) at 11PM. 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 4s period and expected on Tuesday (Aug 18) at 5AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Tue 18th Aug) | 2.5ft (0.7m) 7s |
| Best Surf | 11AM (Tue 18th Aug) | 2.5ft (0.7m) 7s |
| Most Powerful | 11PM (Sat 22nd Aug) | 4.5ft (1.3m) 6s |
Table - best surf conditions forecast for Jetty over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s take a look at what’s coming up in proper units.
Honestly, the first week is a bit of a washout. From Tuesday the 18th right through to Sunday the 23rd, there’s a long stretch with nothing worth talking about. Tiny swell, messy wind, poor conditions. Leave your board in the car.
We get a flicker of life on Monday the 24th. Jetty shows a small 3 ft S swell with a 7 second period. The morning is clean with a light cross-offshore breeze. The combined energy is moderate (110). Nothing special, but it’s the first decent sign.
Tuesday the 25th morning has a bit more size at 4 ft from the SSW, period still short at 7 seconds. Light cross wind leaves a clean surface. The energy is stronger (257). Marginally surfable.
The real standout is Friday the 28th of August morning at Jetty. Clean conditions, 4 ft S swell at 8 seconds, with a light cross breeze from the WSW. Combined energy is solid (273). This is your best window. Get out there early.
That Friday afternoon, the swell picks up to 5 ft, but the wind cranks to 30 km/h from the WSW, making it lumpy and choppy. Energy spikes (536), but it’s messy. Kite surfers might be interested, but not for paddling.
Monday the 31st morning has 4 ft from the ESE at 7 seconds, with a light cross breeze. Energy is moderate (149). Surfable, but average. The afternoon gets bigger at 6 ft from the east, but that onshore SSW wind kills the quality. Not for beginners.
Tuesday the 1st of September morning is clean-ish with 4 ft SE swell and light cross wind. Energy is strong (235). Marginal, but worth a look.
The second week is pretty thin and uncertain. Nothing major stands out.
So, the pick is Friday 28th August morning at Jetty. Clean, 4 ft S swell, light wind. Crowds are possible, so get in early. Everything else is a waiting game.
- Rusty
Short Range ForecastLight rain (total 2mm), mostly falling on Tue night. Warm (max 27°C on Wed afternoon, min 18°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 14mm), heaviest on Sun afternoon. Warm (max 23°C on Fri afternoon, min 18°C on Fri morning). Wind will be generally light. | ||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||||
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) | SSE 7 | SSE 7 | SE 8 | SSE 6 | SSE 6 | SSE 6 | SE 9 | SE 7 | SE 7 | SE 8 | SE 8 | SE 8 | SE 8 | E 6 | ESE 6 | E 6 | SE 12 | SE 12 | SSE 7 | S 7 | S 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 49 | 61 | 30 | 27 | 25 | 22 | 12 | 14 | 12 | 24 | 18 | 17 | 25 | 91 | 121 | 41 | 25 | 22 | 62 | 59 | 42 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | cross-on | cross-off | cross-on | cross-on | cross | off | cross-off | cross-off | cross-on | on | cross-on | cross-on | cross | cross | cross-on | cross-off | cross-off | cross | cross-off |
High Tide | 12:27PM1.02m | 00:46AM0.87m | 1:17PM0.98m | 1:39AM0.80m | 2:13PM0.94m | 2:38AM0.76m | 3:12PM0.92m | 3:41AM0.74m | 4:11PM0.94m | 4:40AM0.76m | 5:04PM0.97m | 5:32AM0.80m | 5:52PM1.01m | ||||||||
Low Tide | 6:01PM0.21m | 6:06AM0.17m | 6:52PM0.27m | 6:53AM0.22m | 7:48PM0.31m | 7:44AM0.26m | 8:52PM0.33m | 8:39AM0.28m | 10:06PM0.32m | 9:39AM0.28m | 11:16PM0.29m | 10:39AM0.26m | 00:01AM0.24m | ||||||||
 |  |  | | |  |  | | | | |  | | | |  |  |  | | | | |
 | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — |
 | — | 7:45 | — | — | 7:43 | — | — | 7:42 | — | — | 7:39 | — | — | 7:38 | — | — | 7:37 | — | — | 7:36 | — |
mm | — | — | 1 | — | — | — | — | — | 1 | — | — | — | — | — | — | 2 | 10 | 2 | — | — | — |
Temp °C | 24 | 24 | 25 | 25 | 27 | 26 | 26 | 26 | 19 | 21 | 23 | 22 | 21 | 22 | 21 | 21 | 21 | 23 | 21 | 25 | 25 |
Feels °C | 27 | 26 | 26 | 26 | 28 | 25 | 25 | 27 | 17 | 19 | 22 | 21 | 21 | 19 | 18 | 20 | 20 | 24 | 17 | 22 | 22 |
Swell 1 Height (m) Direction Period (s) | SSE 7 | SSE 7 | SE 8 | SSE 6 | SSE 6 | SSE 6 | S 5 | SE 7 | SE 7 | SE 8 | SE 8 | SE 8 | SE 8 | SE 13 | ESE 6 | E 6 | E 5 | S 5 | SSE 7 | S 7 | S 7 |
| kJ | 49 | 61 | 30 | 27 | 25 | 22 | 8 | 14 | 12 | 24 | 18 | 17 | 17 | 7 | 121 | 41 | 15 | 13 | 62 | 59 | 42 |
Swell 2 Height (m) Direction Period (s) | E 4 | E 4 | S 7 | SE 10 | SE 9 | SSW 3 | ESE 7 | S 5 | SE 9 | SE 15 | S 6 | SE 14 | SE 13 | SE 9 | SE 13 | S 6 | SE 12 | E 5 | SE 12 | SE 11 | SE 11 |
| kJ | 1 | 1 | 22 | 16 | 14 | 2 | 10 | 5 | 12 | 8 | 2 | 8 | 7 | 3 | 7 | 9 | 23 | 5 | 21 | 20 | 19 |
Swell 3 Height (m) Direction Period (s) | SE 13 | SE 12 | SSE 11 | — | SSW 6 | — | SE 9 | SE 9 | S 5 | SE 5 | SE 14 | — | SE 9 | S 5 | SE 9 | SE 12 | SE 8 | SE 12 | E 5 | E 7 | E 6 |
| kJ | 7 | 6 | 12 | — | 6 | — | 12 | 3 | 2 | 1 | 8 | — | 3 | 1 | 3 | 24 | 3 | 22 | 2 | 3 | 1 |
Wind waves Height (m) Direction Period (s) | ENE 4 | — | — | — | — | — | — | — | — | — | E 3 | E 3 | E 4 | E 6 | — | — | S 5 | — | — | — | — |
| kJ | 3 | — | — | — | — | — | — | — | — | — | 1 | 2 | 25 | 91 | — | — | 25 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 4 | 65 | 4 | 4 | 258 | 69 | 50 | 2564 | 274 | 160 | 768 | 257 | 256 | 324 | 150 | 18 | 4 | 0 | 0 | 73 |
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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