Jetty Surf Break

Lat Long: 40.79° N 72.66° W

Jetty Surf Forecast and Surf Report

Issued: 1 am 21 Aug 2026 (local time)

Forecast update in  hr  min

Today's Jetty sea temperature is
23.9° C
1.9° 

Jetty surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Jetty surf forecast from 21 Aug 2026:

  • Best quality surf: Friday 21 Aug, 11PM (local time) - 4ft (1.2m), 6s period, ENE swell with cross-offshore winds.
  • Most powerful swell: Friday 21 Aug, 8PM (local time) - 4ft (1.2m), 6s period, ENE swell with 119 kJ wave energy.
  • Next surfable swell (1★+): Friday 21 Aug, 11PM (local time) - 4ft (1.2m), 6s period with ENE 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 Friday (Aug 21) at 11PM. The primary swell is predicted to be 1.2m and 6s period with a secondary swell of 1.0m and 6s. Another secondary swell of 0.2m and 6s 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 1.2m 6s and forecast to arrive on Friday (Aug 21) at 8PM. 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 4s period and expected on Friday (Aug 21) at 8AM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+)11PM (Fri 21st Aug)4ft (1.2m) 6s
Best Surf11PM (Fri 21st Aug)4ft (1.2m) 6s
Most Powerful 8PM (Fri 21st Aug)4ft (1.2m) 6s

Table - best surf conditions forecast for Jetty over the next 16 days.


The Lowdown

Alright folks, Rusty here. Let’s get into it.

Look, I’ll be straight with you – the next two weeks are a real struggle. We’ve got a near-empty forecast for the Jetty, so if you’re desperate for a paddle, you’re going to be waiting a long time for anything worthwhile. The Jetty itself is a breakwater setup, and it’s very consistent, but that doesn’t mean a thing when the swell just isn’t showing up. The water is sitting at 75°, a touch warmer than normal for this time of year, which is nice for a swim, but not much else.

We start on Friday, the 21st of August, with tiny, weak windswell. The NNE wind is blowing 19 mph, cross-off, but the swell is a pathetic 3 ft from the ENE with a period of only 5 seconds. The combined energy is a measly 57 – that’s dead. It’s clean, but it’s junk. Saturday and Sunday are even smaller, with onshore winds and rain or thunderstorms. The swell drops to 1 ft on Sunday morning, even with a 12-second period from the SE, the energy is only 41. It’s not surfable.

The whole first week is dead. We get a slight bump on Friday the 28th of August, with swell reaching 4 ft from the S, period 7 seconds, and the energy jumps to 160. But the wind is a messy cross-shore at 12 mph, creating a cross-chop. It’s still poor. The next day, the 29th, has a touch of clean, cross-off wind from the WNW, but the swell is back down to 2 ft.

The only real window, and I mean the only one that might raise an eyebrow, is on Tuesday the 1st of September. We get a 5 ft swell from the S, period 7 seconds, and the energy hits 195. The wind is light and cross from the E at 9 mph. It’s still a “poor surf conditions” call, but it’s the most size we’ll see. Still, with that short period and a cross-shore, it’s not going to be a gem.

Then we get a tease on Wednesday the 2nd of September. The morning is glassy – zero wind from the SSW. The swell is a tiny 2 ft, period 6 seconds, energy 48. It’s clean, but there’s no power. Thursday the 3rd is also glassy in the morning with a 1 ft, 9-second period SE swell, but again, it’s just a dribble.

The rest of the run into the 5th of September is more of the same: tiny, weak, and onshore. The Jetty is not offering a single standout session. This is a blank run, and for a break that’s meant to be very consistent, it’s a real bummer.

Rusty.

Short Range Forecast

Light rain (total 8mm), mostly falling on Sat night. Warm (max 26°C on Sun night, min 19°C on Fri morning). Winds decreasing (fresh winds from the NNE on Fri morning, light winds from the SSE by Sat night).

Days 4-6 Weather Summary

Mostly dry. Warm (max 25°C on Mon afternoon, min 20°C on Tue morning). Wind will be generally light.

Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
ENE
5
1
E
6
0.9
E
6
0.6
E
6
0.5
E
5
0.2
SSE
9
0.3
SE
12
0.8
SSE
5
1.1
SSE
6
0.6
SE
7
0.8
S
6
0.7
S
6
0.6
SSW
6
0.3
SE
11
0.3
SE
11
0.3
SE
9
0.3
SE
9
0.5
SE
8
0.8
S
5
0.9
SSE
5
1
SSW
5
Wave Graph
Metric surfscale
Energy kJ
33
71
64
24
14
8
24
29
93
35
48
35
25
18
18
13
14
31
31
36
58
Wind (km/h)
30
NNE
25
NE
15
NNE
10
ENE
10
SE
10
SE
10
SE
20
SW
20
W
25
WSW
25
WSW
10
WNW
15
W
15
SW
20
SW
10
SW
15
SSW
15
S
15
SSE
20
SSE
25
SW
Wind State
cross-off
cross-off
cross-off
cross
on
on
on
cross
cross-off
cross
cross
cross-off
cross-off
cross
cross-on
cross-on
cross-on
on
on
on
cross
High Tide
3:12PM0.92m
3:41AM0.74m
4:11PM0.94m
4:40AM0.76m
5:04PM0.97m
5:32AM0.80m
5:52PM1.01m
6:18AM0.86m
6:36PM1.05m
7:00AM0.91m
7:17PM1.08m
7:40AM0.97m
7:58PM1.10m
Low Tide
8:52PM0.33m
8:39AM0.28m
10:06PM0.32m
9:39AM0.28m
11:16PM0.29m
10:39AM0.26m
00:01AM0.24m
11:35AM0.21m
00:35AM0.18m
12:25PM0.16m
1:08AM0.13m
1:09PM0.11m
1:42AM0.08m
cloud
part cloud
part cloud
cloud
light rain
rain showers
thunderstorm
thunderstorm
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
part cloud
thunderstorm
mod rain
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:05
6:07
6:07
6:09
6:09
6:11
6:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:39
7:38
7:37
7:36
7:34
7:32
7:30
 mm
2
4
1
1
4
6
18
Temp °C
20
22
21
20
21
21
23
25
26
23
25
24
22
25
24
24
25
24
24
25
25
Feels °C
17
20
20
22
22
23
25
24
25
19
21
22
19
22
21
23
24
24
24
25
24
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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