Today's Manitoulin Island sea temperature is 9.4 °C
(2.0°C warmer than normal for this time of year)
| Mean: | 7.4 °C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Range: | 5.4 °C to 10.5 °C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Statistics for 08 Jun (1981–2005) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Today, many surfers would wear a winter wetsuit, a neoprene hood, gloves and boots.
Don't be misled by the pleasant air temperatures because the water temperature at Manitoulin Island is much colder than the air today. Surfers will need a good quality sealed winter wetsuit, a neoprene hood, gloves and boots. Feeling much warmer out of the water than in the sea today.
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Below is a graph of Historical Sea Surface Temperature for Manitoulin Island. 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.

All of the graphs for the surf breaks presented on Surf-Forecast.com are on the same scale to enable comparison between locations around the world.
Manitoulin Island sea water temperatures peak in the range 16 to 22°C (61 to 72°F) on around the 13th of August and are at their coldest on about the 7th of March, in the range 1 to 2°C (34 to 36°F). The highest Manitoulin Island sea water temperatures in the third week of August require something like a 3/2mm fully sealed wetsuit. The coldest sea water temperatures at Manitoulin Island 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 the first part of March.
Actual sea surface water temperatures close to shore at Manitoulin Island 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 Manitoulin Island. Refer to our detailed weather forecasts for this information.


