Niagara Rivermouth surfForecast / Lake Ontario / USA

information circle12 Day Weather and Surf, issued 1 pm Thursday 10 Jul 2025 EDT
Forecast 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
21.9° C
(Which is 2.3°C warmer than normal for this time of year)
Updates in  hr  min  s Forecast update imminent
Thu
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Tue
22
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
Period(s) (?)------------------------------------
Wave
Graph
(?)Metric surfscale
Energy (?)000000000000000000000000000000000000
Wind
(km/h)
5
NE
10
SSW
10
WNW
5
SE
10
SSW
15
SW
20
SW
15
S
15
WSW
15
WSW
5
NW
5
NW
5
SSW
10
W
10
WSW
20
SSW
15
SSW
15
SW
25
SW
15
SW
10
WSW
5
WNW
15
NNW
10
NW
5
WSW
10
NNE
10
NNW
5
NNE
10
S
10
WSW
10
SW
15
SSW
20
SW
30
SSW
15
SSW
20
SW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
glassoffcross-
off
crossoffoffoffcross-
off
cross-
off
cross-
off
crosscrossoffcross-
off
cross-
off
offcross-
off
offoffoffoffcross-
off
crosscrosscross-
off
cross-
on
cross-
on
oncross-
off
cross-
off
offoffoffoffoffoff
High Tide
/ height (m)
n/a
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Low Tide
/ height (m)
n/a
n/a
n/a
n/a
n/a
n/a
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Thu
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Tue
22
Sunrise--5:46--5:46--5:47--5:48--5:48--5:50--5:50--5:52--5:52--5:52--5:54--5:54
Sunset8:57--8:55--8:55--8:54--8:54--8:53--8:52--8:52--8:52--8:51--8:50--8:49--
clearpart cloudpart cloudclearpart cloudpart cloudclearrain showersthunderstorm thunderstorm thunderstorm clearclearclearclearpart cloudclearclearclearrain showersthunderstorm thunderstorm mod rainpart cloudclearclearclearclearclearclearcloudclearclearthunderstorm thunderstorm thunderstorm
Rain (mm)
-------2121--------72116----------151
Temp. °C272624282729312926282724282626302729312824252120252520242424292828312930
Feels °C (?)292925292830323128292926292527292629302728282020252520232323262828313032

Short Range Forecast: Light rain (total 3mm), mostly falling on Sat night. Warm (max 31°C on Sat afternoon, min 21°C on Thu night). Wind will be generally light.

Days 3-6 Weather Summary Light rain (total 3mm), mostly falling on Sun afternoon. Warm (max 30°C on Tue afternoon, min 22°C on Sun night). Wind will be generally light.

Days 6-9 Weather Summary Heavy rain (total 26mm), heaviest during Thu afternoon. Warm (max 31°C on Wed afternoon, min 18°C on Thu night). Wind will be generally light.

Long Range Forecast: Light rain (total 7mm), mostly falling on Mon night. Warm (max 32°C on Tue afternoon, min 20°C on Sat night). Winds increasing (light winds from the ENE on Sat night, fresh winds from the SSW by Mon afternoon).

  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
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Information about the Niagara Rivermouth Surf forecast

The above surf forecast table for Niagara Rivermouth provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Niagara Rivermouth can be found by selecting the local surf guide option on the grey menu. Our Niagara Rivermouth 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 (Niagara Rivermouth) 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 Niagara Rivermouth 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.

Niagara Rivermouth is 18 km (11 miles) from the city of Saint Catharines. If you plan a vacation in Lake Ontario - United States, look for hotels and other accommodation in Saint Catharines. Saint Catharines has rooms for a wide range of budgets as well as car hire and transport links.

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