September is a popular month to ask about Argyle Shore because conditions can shift week to week along this coast. Expect the water near 15.0°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 Gulf of St Lawrence.
Argyle Shore sea temperature in September — averages 15.0°C
The sea at Argyle Shore in Canada averages 15.0°C during September, based on long-run climatology for the Gulf of St Lawrence. Use the live reading below for today's actual water and the monthly grid to compare with the rest of the year.
Average sea · September
15.0°C
mild · Fair
Live water now
…
Recommended wetsuit
4/3mm fullsuit
At 15.0°C you need a 4/3mm fullsuit, and many surfers add neoprene boots.
Monthly comparison
Cool — short dips or a shorty wetsuit · Argyle Shore
Can you swim at Argyle Shore in July? — 16.0°C water16.0°CCan you swim at Argyle Shore in August? — 17.0°C water17.0°CCan you swim at Argyle Shore in September? — 15.0°C water15.0°CCan you swim at Argyle Shore in October? — 11.0°C water11.0°CCan you swim at Argyle Shore in November? — 8.0°C water8.0°CCan you swim at Argyle Shore in December? — 5.0°C water5.0°C
Frequently asked questions
What is the average sea temperature at Argyle Shore in September?
Argyle Shore averages 15.0°C in September, based on long-run climatology for the Gulf of St Lawrence.
Is the sea warm enough to swim at Argyle Shore in September?
Not without thermal protection — a wetsuit is recommended at 15.0°C.
Do I need a wetsuit at Argyle Shore in September?
A 3/2 mm wetsuit makes longer swims comfortable.