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Coastguards surfForecast / Long Island NY / USA
48hr Weather and Surf, issued 1 am Monday 18 May 2026 EDTForecast update in hr min s Forecast update imminent
Coastguards surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Coastguards sea temperature is
13.3° C
(Which is 1.7°C warmer than normal for this time of year)How big are the waves at Coastguards today?
The current surf forecast for Coastguards at 9AM is: 0.6m 8s primary swell from a South-southeast direction and 0.7m 6s secondary swell from a South direction (forecast issued at 01:00am May 18). The wind direction is predicted to be glassy.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | 2ft (0.6m) | 8s |
| Afternoon (18 May) | 2.5ft (0.8m) | 8s |
| Evening (18 May) | 3.5ft (1.1m) | 5s |
Table - waves today at Coastguards. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 2mm), mostly falling on Wed night. Warm (max 29°C on Wed afternoon, min 14°C on Wed night). Wind will be generally light. | ||||||||||||||||||||||||
Monday 18 | Tuesday 19 | Wednesday 20 | ||||||||||||||||||||||
2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
S 7 | SSW 6 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | S 5 | SSW 5 | SSW 5 | S 6 | S 6 | S 6 | S 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 7 | SSW 6 | SSW 6 | SSW 6 | S 6 | SSW 6 | S 6 | |
155 | 60 | 39 | 75 | 75 | 94 | 42 | 78 | 78 | 91 | 66 | 66 | 66 | 109 | 223 | 237 | 225 | 206 | 149 | 123 | 134 | 165 | 175 | 92 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | glassy | on | on | on | on | on | on | on | on | on | on | on | cross-on | on | on | cross-on | cross-on | cross-on | on | cross-on | cross-off | cross | |
High Tide | 9:07AM1.36m | 9:19PM1.69m | 10:04AM1.33m | 10:17PM1.62m | 11:05AM1.30m | |||||||||||||||||||
Low Tide | 3:07AM-0.18m | 3:04PM-0.07m | 3:58AM-0.16m | 3:56PM-0.02m | 4:50AM-0.11m | 4:50PM0.05m | ||||||||||||||||||
 | |  |  | | | |  | | | | | | |  | | | | | | | |  |  | |
 | — | 5:33 | — | — | — | — | — | — | — | 5:33 | — | — | — | — | — | — | — | 5:31 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 8:05 | — | — | — | — | — | — | — | 8:06 | — | — | — | — | — | — | — | 8:07 | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | |
Temp °C | 24 | 23 | 23 | 23 | 25 | 24 | 22 | 23 | 24 | 22 | 22 | 25 | 26 | 25 | 24 | 23 | 21 | 23 | 24 | 27 | 29 | 28 | 23 | 19 |
24 | 23 | 25 | 23 | 24 | 22 | 20 | 20 | 23 | 21 | 22 | 24 | 24 | 22 | 25 | 21 | 19 | 21 | 22 | 25 | 26 | 26 | 21 | 17 | |
Swell 1 Height (m) Direction Period (s) | S 7 | SSW 5 | S 6 | SSE 8 | E 14 | SE 14 | SE 8 | SE 8 | SE 7 | SE 9 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | S 6 | S 6 |
 kJ | 155 | 37 | 31 | 75 | 4 | 7 | 28 | 21 | 26 | 14 | 30 | 44 | 43 | 43 | 25 | 42 | 44 | 37 | 38 | 26 | 27 | 29 | 130 | 92 |
Swell 2 Height (m) Direction Period (s) | E 15 | SSE 8 | SSE 8 | E 14 | — | — | SE 14 | SE 13 | SE 13 | SE 13 | SE 13 | SE 13 | SE 13 | SE 13 | SE 14 | E 16 | SE 16 | SE 16 | SE 15 | SE 15 | SE 12 | SE 12 | SE 9 | SE 9 |
| kJ | 4 | 40 | 39 | 4 | — | — | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 5 | 10 | 10 | 9 | 9 | 6 | 6 | 29 | 29 |
Swell 3 Height (m) Direction Period (s) | — | E 15 | E 15 | — | — | E 14 | — | S 17 | — | — | — | — | — | — | — | — | — | — | SE 12 | SE 16 | SE 15 | SE 15 | SE 12 | SE 12 |
| kJ | — | 4 | 4 | — | — | 4 | — | 6 | — | — | — | — | — | — | — | — | — | — | 6 | 9 | 9 | 9 | 6 | 6 |
Wind waves Height (m) Direction Period (s) | — | SSW 6 | — | SW 6 | SSE 8 | SSE 8 | S 5 | SSW 5 | SSW 5 | S 6 | S 6 | S 6 | S 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 7 | SSW 6 | SSW 6 | SSW 6 | S 6 | SSW 6 | WNW 4 |
| kJ | — | 60 | — | 17 | 75 | 94 | 42 | 78 | 78 | 91 | 66 | 66 | 66 | 109 | 223 | 237 | 225 | 206 | 149 | 123 | 134 | 165 | 175 | 2 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 21 | 21 | 0 | 310 | 174 | 789 | 789 | 321 | 255 | 60 | 62 | 62 | 62 | 62 | 825 | 59 | 59 | 59 | 59 | 255 | 62 | 75 | 6 | 2 |
Best forecast wave conditions in Long Island New York | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
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