Norfolk Island – Water Temperature Overview

Norfolk Island is surrounded entirely by ocean waters. Water temperatures are influenced by subtropical conditions, affecting swimming and coastal activities throughout the year.

Current Sea Water Temperature

23.5°C

minimum

23.6°C

average

23.6°C

maximum

The average sea water temperature today in Norfolk Island is about 24°C. Water in this range is comfortably warm and widely considered ideal for swimming. Most people can stay in the water for a long time without feeling cold. It works well for families, recreational swimming, and active water sports such as swimming, surfing, and paddleboarding.

It’s important to note that these swimming tips and recommendations apply only in settled weather. When air temperatures drop below 20°C — and sometimes even below 25°C — swimming can feel uncomfortable, even when water temperatures are relatively high.

Sea Temperature Trends

Water Temperature Over the Last 60 Days

The sea water temperature is within the range expected based on historical data for this month.

Water Temperature and Swimming Conditions by Month

Month	Min	Avg	Max
January	21°C	24°C	26°C
February	22°C	24°C	26°C
March	22°C	24°C	26°C
April	21°C	23°C	25°C
May	19°C	22°C	24°C
June	18°C	20°C	22°C
July	17°C	19°C	21°C
August	17°C	19°C	21°C
September	17°C	19°C	21°C
October	17°C	20°C	22°C
November	19°C	21°C	23°C
December	20°C	23°C	25°C

Norfolk Island sits in the South Pacific and enjoys mild, temperate sea water temperatures throughout the year. Sea temperatures typically range from around 19–20 °C in winter to about 23–25 °C in summer. The surrounding ocean warms gradually through spring, reaching its most comfortable levels in late summer and early autumn. Even in the cooler months, the water rarely feels cold, making sea swimming possible for much of the year, particularly for those accustomed to temperate conditions.

Swimming Conditions

Swimming opportunities around Norfolk Island are closely linked to weather and sea conditions rather than temperature alone. In summer, when water temperatures sit above 23 °C, the sea feels comfortable for longer swims and general water activities. During winter, cooler temperatures in the high teens can still suit short swims, especially on calm, sunny days. Sheltered coastal areas tend to feel slightly warmer and more inviting, while exposed sites can feel cooler due to swell and wind. Overall, Norfolk Island offers consistently mild sea temperatures and a relatively long swimming season compared with mainland southern Australia.