Rottnest Island Sea Temperature
Australia · Updated hourly from satellite and marine data
Current Sea Temperature
19.4°C
Cool — wetsuit recommended
Sea Surface Temperature Over the Year
Sea surface temperature in Rottnest Island ranges from about 20.4°C in June to 20.4°C in June. The water is warmest in late summer and coolest in winter.
Over the past 30 days, the average sea temperature in Rottnest Island has been 20.4°C.
Monthly Water Temperature Averages
| Month | Min | Average | Max |
|---|---|---|---|
| Jun | — | — | — |
Based on recent forecast data collected for Rottnest Island.
Rottnest Island Water Temperature — Common Questions
What is the sea temperature in Rottnest Island today?
The current sea surface temperature in Rottnest Island is 19.4°C. Over the last 30 days, the average has been 20.4°C.
When is the water warmest in Rottnest Island?
The warmest sea temperatures in Rottnest Island occur in June, averaging around 20.4°C. Late summer typically brings the warmest water, ideal for snorkeling without a wetsuit.
When is the water coldest in Rottnest Island?
The coldest sea temperatures are in June, averaging around 20.4°C.
Can you swim in Rottnest Island today?
The water is 19.4°C — cool but manageable with a wetsuit or for short dips.
Full Snorkeling Forecast
See how today's sea temperature, wave height, wind, and tides combine into a detailed snorkeling score for Rottnest Island.
View Snorkel Forecast →