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Niagara Rivermouth Surf Forecast
/ Lake Ontario (8 breaks) / New York (44 breaks) /
Surf Forecasts:
Niagara Rivermouth surfForecast / Lake Ontario / USA
48hr Weather and Surf, issued 1 pm Sunday 17 May 2026 EDTForecast update in hr min s Forecast update imminent
Niagara Rivermouth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Niagara Rivermouth sea temperature is
6.2° C
(Which is 1.5°C colder than average for this time of year)Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 12mm), heaviest on Tue night. Warm (max 27°C on Mon afternoon, min 11°C on Wed morning). Winds increasing (light winds from the SW on Sun afternoon, strong winds from the SW by Tue afternoon). | ||||||||||||||||||||||||
Sun 17 | Monday 18 | Tuesday 19 | Wed 20 | |||||||||||||||||||||
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 | 2 AM | 5 AM | 8 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | off | off | cross-off | cross-off | cross-off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | cross-on | cross-off | |
High Tide | ||||||||||||||||||||||||
Low Tide | ||||||||||||||||||||||||
 | |  | |  |  |  | |  |  | | | |  | | | | | |  | | | | | |
 | — | — | — | — | — | — | 5:48 | — | — | — | — | — | — | — | 5:48 | — | — | — | — | — | — | — | 5:47 | — |
 | — | — | — | 8:35 | — | — | — | — | — | — | — | 8:36 | — | — | — | — | — | — | — | 8:37 | — | — | — | 8:37 |
— | — | 1 | 1 | — | 2 | — | — | — | — | — | — | — | 1 | — | — | — | — | — | 1 | 1 | 1 | 3 | 1 | |
Temp °C | 20 | 21 | 23 | 22 | 19 | 18 | 18 | 19 | 23 | 27 | 27 | 25 | 22 | 20 | 19 | 19 | 23 | 24 | 24 | 22 | 20 | 19 | 12 | 11 |
20 | 22 | 25 | 24 | 20 | 19 | 18 | 16 | 21 | 25 | 26 | 24 | 19 | 18 | 16 | 18 | 20 | 21 | 20 | 18 | 16 | 16 | 8 | 7 | |
Swell 1 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
 kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 524 | 581 | 587 | 530 | 524 | 530 | 524 | 524 | 651 | 1146 | 1146 | 1146 | 582 | 582 | 530 | 546 | 584 | 530 | 530 | 525 | 638 | 524 | 524 | 48 |
Best forecast wave conditions in Lake Ontario - United States | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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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 Niagara Rivermouth 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.
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