Can you swim at Mona Vale Beach in September? — 17.0°C water
Yes, but expect a fresh dip
Average sea · September
17.0°C
Live water now
…
Recommended wetsuit
3/2mm fullsuit
mild
It depends. Mona Vale Beach sits around 17.0°C in September; 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 Mona Vale Beach live page for full conditions.
Best months to swim
January · February · March · December
Frequently asked questions
What is the average sea temperature at Mona Vale Beach in September?
Mona Vale Beach averages 17.0°C in September, based on long-run climatology for the Tasman Sea.
Is the sea warm enough to swim at Mona Vale Beach in September?
It is swimmable but fresh; confident swimmers will be fine without a wetsuit.
Do I need a wetsuit at Mona Vale Beach in September?
A 2 mm shorty is comfortable for sessions over 30 minutes.
