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Fire Island Surf Forecast
/ Long Island NY (34 breaks) / New York (44 breaks) /
Surf Forecasts:
Fire Island surfForecast / Long Island NY / USA
16 Day Weather and Surf, issued 7 am Monday 18 May 2026 EDTForecast update in hr min s Forecast update imminent
Fire Island surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Fire Island sea temperature is
12.5° C
(Which is slightly warmer than usual)Best Forecast Surf Conditions for Fire Island this week:
The surf forecast for Fire Island over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (May 20) at 8PM. The primary swell is predicted to be 1.5m and 6s period with a secondary swell of 1.2m and 6s. Another secondary swell of 0.4m and 9s is also forecast. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Fire Island in the next 16 days are 2.2m 8s and forecast to arrive on Saturday (May 23) 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 0.3m 3s period and expected on Thursday (May 21) at 8AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Wed 20th May) | 5ft (1.5m) 6s |
| Best Surf | 8PM (Wed 20th May) | 5ft (1.5m) 6s |
| Most Powerful | 11PM (Sat 23rd May) | 7ft (2.2m) 8s |
Table - best surf conditions forecast for Fire Island over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 5mm), mostly falling on Wed night. Warm (max 26°C on Tue night, min 14°C on Wed night). Winds increasing (light winds from the WSW on Mon morning, fresh winds from the SW by Wed afternoon). | Days 4-6 Weather SummaryHeavy rain (total 23mm), heaviest during Sat afternoon. Very mild (max 14°C on Thu morning, min 8°C on Sat afternoon). Wind will be generally light. | ||||||||||||||||||||
Monday 18 | Tuesday 19 | Wednesday 20 | Thursday 21 | Friday 22 | Saturday 23 | Sunday 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 |  |  |  |  |  |  |  | ||||||||||||||
S 7 | S 7 | S 6 | S 6 | S 6 | S 7 | S 7 | SSW 6 | S 6 | S 6 | SE 9 | SE 9 | SE 8 | SE 9 | SSE 6 | SE 6 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | |
70 | 70 | 62 | 52 | 64 | 152 | 107 | 130 | 66 | 38 | 28 | 26 | 36 | 28 | 24 | 223 | 504 | 600 | 533 | 406 | 226 | |
Wind (km/h) | |||||||||||||||||||||
cross | cross-on | cross | cross | cross | cross | cross | cross | cross-off | cross | cross-on | cross | cross-on | cross-on | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | |
High Tide | 9:18AM0.93m | 9:37PM1.18m | 10:17AM0.91m | 10:34PM1.14m | 11:18AM0.90m | 11:33PM1.09m | 12:21PM0.89m | 00:36AM1.03m | 1:26PM0.89m | 1:41AM0.97m | 2:30PM0.90m | 2:47AM0.92m | 3:31PM0.92m | 3:50AM0.89m | |||||||
Low Tide | 2:52PM-0.04m | 3:43AM-0.07m | 3:44PM-0.00m | 4:35AM-0.03m | 4:39PM0.05m | 5:31AM0.01m | 5:38PM0.11m | 6:29AM0.05m | 6:43PM0.16m | 7:28AM0.09m | 7:50PM0.19m | 8:26AM0.12m | 8:57PM0.20m | ||||||||
 | |  | | |  | |  | |  | |  | | | | |  |  | | | | |
 | 5:31 | — | — | 5:31 | — | — | 5:30 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:26 | — | — |
 | — | 8:04 | — | — | 8:05 | — | — | 8:06 | — | — | 8:07 | — | — | 8:07 | — | — | 8:07 | — | — | 8:08 | — |
— | — | 1 | — | — | — | — | — | 4 | — | — | — | — | — | — | — | 9 | 14 | — | — | — | |
Temp °C | 24 | 25 | 21 | 22 | 24 | 26 | 24 | 26 | 20 | 14 | 14 | 11 | 13 | 13 | 12 | 12 | 8 | 10 | 11 | 11 | 12 |
23 | 23 | 19 | 21 | 22 | 23 | 22 | 22 | 22 | 10 | 11 | 8 | 10 | 9 | 8 | 9 | 4 | 5 | 6 | 6 | 9 | |
Swell 1 Height (m) Direction Period (s) | S 7 | S 14 | SE 8 | SE 8 | SE 8 | SE 8 | SE 9 | SE 9 | S 6 | S 6 | S 6 | S 6 | SE 8 | SE 9 | SSE 6 | — | — | — | — | S 6 | ESE 8 |
 kJ | 70 | 4 | 29 | 33 | 34 | 25 | 28 | 29 | 66 | 38 | 28 | 18 | 36 | 28 | 24 | — | — | — | — | 13 | 226 |
Swell 2 Height (m) Direction Period (s) | — | S 18 | SE 13 | SE 13 | SE 13 | SE 16 | SE 15 | SE 15 | SE 9 | SE 9 | SE 9 | SE 9 | S 6 | ESE 4 | SE 9 | — | — | — | S 18 | S 18 | S 7 |
| kJ | — | 6 | 7 | 7 | 7 | 10 | 8 | 8 | 29 | 29 | 27 | 26 | 2 | 2 | 12 | — | — | — | 6 | 6 | 32 |
Swell 3 Height (m) Direction Period (s) | — | — | S 17 | — | S 16 | — | — | — | SE 15 | SE 14 | SE 14 | E 4 | SE 13 | S 7 | SE 13 | — | — | — | — | — | — |
| kJ | — | — | 5 | — | 5 | — | — | — | 8 | 8 | 8 | 3 | 7 | 4 | 7 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSW 6 | S 7 | S 6 | S 6 | S 6 | S 7 | S 7 | SSW 6 | — | NE 3 | E 4 | — | — | SSE 2 | — | SE 6 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | — |
| kJ | 20 | 70 | 62 | 52 | 64 | 152 | 107 | 130 | — | 1 | 1 | — | — | 1 | — | 223 | 504 | 600 | 533 | 406 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 135 | 750 | 299 | 102 | 102 | 287 | 288 | 102 | 18 | 18 | 613 | 68 | 660 | 660 | 15 | 573 | 91 | 276 | 280 | 3368 | 126 |
Best forecast wave conditions in Long Island New York | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Fire Island surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Fire Island Surf forecast
The above surf forecast table for Fire Island provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Fire Island can be found by selecting the local surf guide option on the grey menu. Our Fire Island 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 (Fire Island) 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 Fire Island 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.
Fire Island is 8 km (5 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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