January is a popular month to ask about Greymouth Beach 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 Tasman Sea.
Greymouth Beach sea temperature in January — averages 15.0°C
The sea at Greymouth Beach in New Zealand averages 15.0°C during January, based on long-run climatology for the Tasman Sea. Use the live reading below for today's actual water and the monthly grid to compare with the rest of the year.
Average sea · January
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 · Greymouth Beach
Can you swim at Greymouth Beach in June? — 10.0°C water10.0°CCan you swim at Greymouth Beach in July? — 9.0°C water9.0°CCan you swim at Greymouth Beach in August? — 9.0°C water9.0°CCan you swim at Greymouth Beach in September? — 10.0°C water10.0°CCan you swim at Greymouth Beach in October? — 11.0°C water11.0°CCan you swim at Greymouth Beach in November? — 12.0°C water12.0°C
Frequently asked questions
What is the average sea temperature at Greymouth Beach in January?
Greymouth Beach averages 15.0°C in January, based on long-run climatology for the Tasman Sea.
Is the sea warm enough to swim at Greymouth Beach in January?
Not without thermal protection — a wetsuit is recommended at 15.0°C.
Do I need a wetsuit at Greymouth Beach in January?
A 3/2 mm wetsuit makes longer swims comfortable.