October is a popular month to ask about Cobourg Beach because conditions can shift week to week along this coast. Expect the water near 13.0°C, with daily variation from wind, tides and recent storms. We refresh the live value from Open-Meteo Marine every hour, so the headline above always reflects the current state of the Lake Ontario.
Cobourg Beach sea temperature in October — averages 13.0°C
The sea at Cobourg Beach in Canada averages 13.0°C during October, based on long-run climatology for the Lake Ontario. Use the live reading below for today's actual water and the monthly grid to compare with the rest of the year.
Average sea · October
13.0°C
cool · Fair
Live water now
…
Recommended wetsuit
4/3mm fullsuit
At 13.0°C you need a 4/3mm fullsuit, and many surfers add neoprene boots.
Monthly comparison
Cool — short dips or a shorty wetsuit · Cobourg Beach
Can you swim at Cobourg Beach in July? — 21.0°C water21.0°CCan you swim at Cobourg Beach in August? — 22.0°C water22.0°CCan you swim at Cobourg Beach in September? — 19.0°C water19.0°CCan you swim at Cobourg Beach in October? — 13.0°C water13.0°CCan you swim at Cobourg Beach in November? — 7.0°C water7.0°CCan you swim at Cobourg Beach in December? — 3.0°C water3.0°C
Frequently asked questions
What is the average sea temperature at Cobourg Beach in October?
Cobourg Beach averages 13.0°C in October, based on long-run climatology for the Lake Ontario.
Is the sea warm enough to swim at Cobourg Beach in October?
Not without thermal protection — a wetsuit is recommended at 13.0°C.
Do I need a wetsuit at Cobourg Beach in October?
A 3/2 mm wetsuit makes longer swims comfortable.