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St Catharines Surf Forecast
/ Lake Ontario (9 breaks) / New York (1 breaks) /
Surf Forecasts:
St Catharines surfForecast / Lake Ontario / Canada
16 Day Weather and Surf, issued 1 pm Tuesday 05 May 2026 EDTForecast update in hr min s Forecast update imminent
St Catharines surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's St Catharines sea temperature is
5.5° C
(Which is normal for this time of year)Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 18mm), heaviest on Tue night. Very mild (max 12°C on Tue afternoon, min 6°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 20mm), heaviest during Fri night. Very mild (max 15°C on Sat afternoon, min 6°C on Sun night). Winds decreasing (fresh winds from the SSW on Sat night, light winds from the W by Sun night). | ||||||||||||||||||||
Tue 5 | Wednesday 6 | Thursday 7 | Friday 8 | Saturday 9 | Sunday 10 | Monday 11 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | 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 | |
Wind (km/h) | |||||||||||||||||||||
cross-off | cross-off | cross | cross | off | cross-off | off | off | cross-off | off | cross-on | cross-off | off | off | cross | cross-on | cross | cross-off | cross-on | cross-off | cross-off | |
High Tide | |||||||||||||||||||||
Low Tide | |||||||||||||||||||||
 |  | |  |  |  | | | |  | | | | | | | |  | |  | | |
 | — | — | 6:03 | — | — | 6:01 | — | — | 6:01 | — | — | 5:58 | — | — | 5:58 | — | — | 5:56 | — | — | 5:56 |
 | 8:22 | — | — | 8:22 | — | — | 8:23 | — | — | 8:24 | — | — | 8:25 | — | — | 8:27 | — | — | 8:28 | — | 8:30 |
1 | 14 | 3 | — | — | — | — | — | — | 1 | 17 | — | — | — | — | 2 | — | — | — | — | — | |
Temp °C | 12 | 9 | 9 | 8 | 8 | 7 | 11 | 10 | 9 | 12 | 10 | 10 | 15 | 14 | 12 | 8 | 8 | 9 | 12 | 11 | 9 |
8 | 7 | 8 | 3 | 6 | 4 | 7 | 5 | 6 | 7 | 7 | 8 | 11 | 7 | 5 | 4 | 6 | 6 | 8 | 5 | 4 | |
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) | 1992 | 1459 | 1520 | 1752 | 529 | 529 | 528 | 529 | 529 | 534 | 643 | 847 | 542 | 529 | 677 | 646 | 538 | 529 | 543 | 542 | 529 |
Best forecast wave conditions in Lake Ontario - Canada | |||||||||||||||||||||
Best forecast wave conditions in Canada | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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 St Catharines 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 St Catharines Surf forecast
The above surf forecast table for St Catharines provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at St Catharines can be found by selecting the local surf guide option on the grey menu. Our St Catharines 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 (St Catharines) 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 St Catharines 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.
Are you planning a holiday in Lake Ontario - Canada? If you are looking for accommodation near St Catharines, camping, hotels and holiday cottages in Lake Ontario - Canada, consider staying in Saint Catharines which is 13 km (8 miles) away. Other places in and around Lake Ontario - Canada where you can find information about places to rent, and car hire include Thorold which is 18 km (11 miles) away, Niagara Falls, Niagara Falls and Welland.
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