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Niagara Rivermouth water temperature
Niagara Rivermouth ratings
Quality on a good day: 3.0
Consistency of Surf: 3.0
Crowds: 3.0

Overall: 3.2

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Niagara Rivermouth Water Temperature and Wetsuit Guide

(Lake Ontario – United States)

Today's Niagara Rivermouth sea temperature is -0.9 °C.

Statistics for 30 May (1981–2005) – mean: 10.5 °C, range: 7.7 °C to 15.5 °C

Don't be misled by the pleasant air temperatures because the water temperature at Niagara Rivermouth will be close to freezing today. Surfers will need a thick steamer wetsuit, a neoprene hood, gloves and boots. Feeling much nicer out of the water than in the sea today.

United States Sea Water Temperature

Map of current United States
Surface Water Temperatures
based on measurements from oceanographic satellites
United States Water Temperature Anomaly

Map of current United States
Sea Water Temperature Anomalies

(compared with long term averages
at this time of year)

(click thumbnails to expand)

Below is a graph of Historical Sea Surface Temperature for Niagara Rivermouth. This has been derived from analysis of two decades of oceanographic satellite measurements of nearby open water. We have calculated the average water temperature variation around the year as well as the extremes that have been observed on each date.

Niagara Rivermouth Water Temperature Graph

All of the graphs for the surf breaks presented on are on the same scale to enable comparison between locations around the world.

Niagara Rivermouth sea temperatures peak in the range 18 to 24°C (64 to 75°F) on around the 9th of August and are at their lowest on about the 8th of February, in the range 1 to 3°C (34 to 37°F). Niagara Rivermouth sea temperatures are highest in early to mid August. Surfers should use a 2mm long sleeve shorty or a 3/2mm spring wetsuit if the wind is up. The lowest sea temperatures at Niagara Rivermouth mean that you will need a flexible 6/5/4mm wetsuit or a well fitting 5/4mm wetsuit with gloves and 5mm neoprene booties and a hood to surf here in early to mid February.

Actual sea surface water temperatures close to shore at Niagara Rivermouth can vary by several degrees compared with these open water averages. This is especially true after heavy rain, close to river mouths or after long periods of strong offshore winds. Offshore winds cause colder deep water to replace surface water that has been warmed by the sun. Air temperature, wind-chill and sunshine should also be considered before deciding on the kind of wetsuit needed to stay warm when surfing at Niagara Rivermouth. Refer to our detailed weather forecasts for this information.


Do you have old images of surf? Simply upload them to the photo gallery and we will search our vast archive of forecasts and display the open water swell sizes, directions and periods, as well as wind and tide at the time of the image. It's a really useful way of knowing what to look for in the forecast tables.