Magnetic Island – current water temperature and swimming conditions

Water Temperature in Magnetic Island: Daily Trends, Historical Records, and Forecast

✅ 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.

Water Temperature Over the Last 30 Days

Water temperatures in Magnetic Island have been gradually cooling over the past month, with a further drop recorded during the last week.

According to our forecast, Sea water temperature in Magnetic Island will be 25.3°C in the next 7 days. See the table below for daily data for the upcoming week.

Table of Daily Sea Temperature Data

Annual Water Temperature Overview by Month

Monthly Water Temp Ranges

30°C

25°C

20°C

15°C

10°c

5°C

0°C

Annual Water Temperature Trend

Magnetic Island sits just offshore from Townsville on Queensland’s North Coast, with the Coral Sea keeping water temperatures warm for most of the year. In summer, from around December to March, sea temperatures are usually between 27 and 29 °C, making the water feel properly tropical. During winter, typically June to August, temperatures ease back to about 22–24 °C, which is still comfortable for swimming, especially on calm, sunny days. Spring and autumn often deliver the most balanced conditions, with water temperatures commonly in the 24–26 °C range and less humidity than mid-summer.