January is summertime on Norfolk Island and offers ideal conditions for ocean swimming. Visitors can expect warm, pleasant weather with average daytime temperatures around 24–26°C, cooling slightly in the evenings. The ocean is at its warmest time of year, typically around 23–24°C, making for comfortable swim conditions.

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Light to moderate sea breezes are common, and while brief summer showers can occur, most days feature plenty of sunshine. With high UV levels at this time of year, competitors and supporters are encouraged to plan for sun protection, hydration, and lightweight clothing both in and out of the water.

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Overall, January provides a relaxed summer atmosphere and excellent conditions for the Pier to Pine Ocean Swim.