Can you swim at Waiheke Onetangi in January? — 18.0°C water
Yes, but expect a fresh dip
Average sea · January
18.0°C
Live water now
…
Recommended wetsuit
3/2mm fullsuit
mild
It depends. Waiheke Onetangi sits around 18.0°C in January; confident swimmers will be fine, casual bathers may prefer short sessions.
Monthly averages set expectations, but the specific beach today depends on wind, swell and recent weather. Check the live value at the top of this page or open the Waiheke Onetangi live page for full conditions.
Frequently asked questions
What is the average sea temperature at Waiheke Onetangi in January?
Waiheke Onetangi averages 18.0°C in January, based on long-run climatology for the Pacific Ocean.
Is the sea warm enough to swim at Waiheke Onetangi in January?
It is swimmable but fresh; confident swimmers will be fine without a wetsuit.
Do I need a wetsuit at Waiheke Onetangi in January?
A 2 mm shorty is comfortable for sessions over 30 minutes.
