
Surf Forecasts:
Gilgo surf forecast from 16 Sep 2026:
- Best quality surf: Sunday 20 Sep, 8PM (local time) - 3ft (0.9m), 5s period, SSE swell with offshore winds.
- Most powerful swell: Tuesday 22 Sep, 8PM (local time) - 4ft (1.2m), 8s period, E swell with 160 kJ wave energy.
- Next surfable swell (1★+): Sunday 20 Sep, 8PM (local time) - 3ft (0.9m), 5s period with SSE swell.
Best Forecast Surf Conditions for Gilgo this week:
The surf forecast for Gilgo over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Sep 20) at 8PM. The primary swell is predicted to be 0.9m and 5s period with a secondary swell of 0.3m and 10s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Gilgo in the next 16 days are 1.2m 8s and forecast to arrive on Tuesday (Sep 22) at 8PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Monday (Sep 21) at 11AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Sun 20th Sep) | 3ft (0.9m) 5s |
| Best Surf | 8PM (Sun 20th Sep) | 3ft (0.9m) 5s |
| Most Powerful | 8PM (Tue 22nd Sep) | 4ft (1.2m) 8s |
Table - best surf conditions forecast for Gilgo over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s talk about what’s cooking for Gilgo over the next couple weeks. Gotta be straight with you—it’s a tough outlook. There’s a long, quiet stretch ahead before we see anything worthwhile.
We start off on Tuesday the 15th, but don’t get your hopes up. We’ve got a tiny 0.3m SE windswell, but the wind is onshore and messy. Water temp is sitting at 23°, which is much warmer than normal for this time of year—about 5°F above average, so it feels a bit like summer’s hanging on. Still, the surf is poor, and that’s the theme for a while.
From Wednesday the 16th through to Saturday the 27th of September, it’s a real desert. Swell stays small, often around 0.2m to 0.4m, with period below 8 seconds. The winds are mainly cross-on or cross-off, and a lot of the time it’s just choppy or messy. There’s a brief uptick on Saturday the 20th with 1.4m SSE swell, but it comes with onshore winds and moderate rain—combined wave energy is 148 (moderate) but the quality is poor, so it’s not worth paddling out.
Even when we get a little more size, like 1.1m on Tuesday the 22nd and 1.4m on Wednesday the 23rd, the wind is cross-on or onshore, and the east swell is short period. The 1.7m on the afternoon of the 23rd is paired with 40 km/h winds from the east—that’s strong cross-on and messy, likely more of a kite-surfing setup than a paddle session. Energy hits 246 (strong), but the conditions are blown out.
The first real glimmer comes on Sunday the 27th. We finally get offshore winds from the NW, with a small 0.7m ESE swell at 8 seconds. The wave comment says “surfable waves but very ordinary.” It’s not a standout, but after two weeks of nothing, clean small waves feel like a win. Combined energy is 91 (weak). Monday the 28th morning picks up a bit with 0.9m ESE, period 10 seconds, and N winds offshore—energy at 167 (moderate), and the wave state is clean. That’s probably the best you’ll see in this whole window, but it’s still only a 1/10 score.
Honestly, there’s no true standout here. If you’re desperate for a paddle, aim for the morning of Monday the 28th or Sunday the 27th, but keep expectations low. The rest of the first week of October is just small, clean conditions with no real swell.
The blank run is long—more than ten days of poor or no surf. That’s not unheard of for Gilgo, but it’s a tough pill to swallow. Forecasts can change, but for now, I’d say leave the board in the bag.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Thu afternoon, min 17°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 33mm), heaviest during Sun morning. Warm (max 26°C on Fri afternoon, min 15°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Tue 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | ||||||||||||||
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) | SE 9 | SE 9 | SE 9 | ESE 9 | SSW 4 | ESE 7 | S 4 | SSW 4 | ESE 7 | SE 12 | ESE 12 | E 6 | ESE 6 | ESE 7 | SSE 5 | S 5 | SE 10 | ESE 5 | E 6 | E 7 |
Wave Graph | ||||||||||||||||||||
13 | 13 | 13 | 8 | 7 | 11 | 14 | 20 | 10 | 22 | 13 | 59 | 98 | 108 | 95 | 64 | 23 | 11 | 66 | 89 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-off | cross-off | cross-off | cross | cross-on | cross-on | on | cross-on | off | cross-off | cross-off | cross-off |
High Tide | 11:10PM1.19m | 11:37AM1.35m | 11:59PM1.10m | 12:25PM1.29m | 00:51AM1.04m | 1:15PM1.24m | 1:45AM1.00m | 2:08PM1.21m | 2:41AM0.99m | 3:05PM1.22m | 3:41AM1.02m | 4:02PM1.25m | 4:38AM1.09m | |||||||
Low Tide | 4:57PM0.15m | 4:58AM0.19m | 5:42PM0.24m | 5:37AM0.28m | 6:34PM0.32m | 6:25AM0.36m | 7:39PM0.36m | 7:33AM0.41m | 8:45PM0.36m | 8:45AM0.41m | 9:42PM0.32m | 9:45AM0.36m | 10:31PM0.25m | |||||||
— | — | 6:33 | — | — | 6:35 | — | — | 6:35 | — | — | 6:37 | — | — | 6:37 | — | — | 6:39 | — | — | |
7:02 | — | — | 7:00 | — | — | 6:59 | — | — | 6:58 | — | — | 6:55 | — | — | 6:53 | — | — | 6:52 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 13 | 15 | 1 | — | 1 | — |
Temp °C | 18 | 17 | 18 | 21 | 22 | 22 | 23 | 23 | 23 | 26 | 23 | 17 | 17 | 18 | 18 | 20 | 18 | 17 | 16 | 16 |
Feels °C | 17 | 16 | 16 | 19 | 22 | 21 | 21 | 21 | 24 | 24 | 18 | 14 | 14 | 15 | 15 | 21 | 19 | 15 | 14 | 14 |
Swell 1 Height (m) Direction Period (s) | E 5 | ESE 4 | E 5 | E 5 | ESE 7 | ESE 7 | E 7 | E 7 | S 5 | S 4 | ESE 7 | ESE 12 | SE 12 | ESE 11 | ESE 7 | SE 11 | S 5 | ESE 5 | SE 8 | SE 9 |
8 | 4 | 4 | 2 | 5 | 11 | 10 | 9 | 7 | 3 | 9 | 13 | 5 | 12 | 5 | 18 | 18 | 11 | 11 | 12 | |
Swell 2 Height (m) Direction Period (s) | SE 9 | SE 9 | SE 9 | ESE 9 | E 5 | SE 13 | SE 12 | SE 12 | ESE 7 | ESE 7 | ESE 12 | ESE 9 | — | — | SE 11 | ESE 7 | ESE 5 | S 5 | — | — |
13 | 13 | 13 | 8 | 2 | 7 | 6 | 6 | 10 | 10 | 13 | 7 | — | — | 18 | 5 | 10 | 4 | — | — | |
Swell 3 Height (m) Direction Period (s) | S 6 | SE 14 | SE 13 | SE 13 | SE 13 | SE 9 | SE 9 | SE 9 | SE 12 | SE 12 | S 5 | — | — | — | SE 11 | — | SE 10 | SSE 9 | E 8 | — |
1 | 8 | 7 | 7 | 7 | 3 | 3 | 3 | 6 | 22 | 2 | — | — | — | 30 | — | 23 | 8 | 1 | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | S 3 | SSW 4 | SSW 3 | S 4 | SSW 4 | N 2 | — | NE 3 | E 6 | ESE 6 | ESE 7 | SSE 5 | S 5 | N 2 | NE 3 | E 6 | E 7 |
— | — | — | 2 | 5 | 2 | 14 | 20 | 1 | — | 3 | 59 | 98 | 108 | 95 | 64 | 1 | 7 | 66 | 89 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 3349 | 857 | 732 | 1196 | 719 | 321 | 326 | 516 | 78 | 114 | 374 | 281 | 6 | 479 | 465 | 15 | 0 | 87 | 23 | 6 |
Best forecast wave conditions in Long Island New York | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
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Information about the Gilgo Surf forecast
The above surf forecast table for Gilgo provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Gilgo can be found by selecting the local surf guide option on the grey menu. Our Gilgo 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 (Gilgo) 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 Gilgo 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.
Gilgo is 7 km (4 miles) from Copiague. If you plan a vacation in Long Island New York, look for hotels and other accommodation in Copiague. Copiague has rooms for a wide range of budgets as well as car hire and transport links.










