Latest for Rottnest Island: European (ECMWF): 17° Clear · American (NOAA GFS): 17° Clear · German (DWD ICON): 18° Clear.
CheckWeather.io on iPhoneFree. No ads, no account.Rottnest Island weather in numbers
from 30 years of measured normalsRottnest Island swings 10°C across the year, from 24°C highs in February to 14°C lows in July, and July is usually the wettest month in a year that brings about 733 mm of precipitation.
The weather map: all three models at once
European, American, German side by side around Rottnest Island and nearby towns.Live rain radar →Rottnest Island hourly forecast: next 14 hours
consensus of the three modelsRain in the next 24 hours, model by model
each model's own hourly precipitation, side by sideLoading the three models…
Rottnest Island 10-day forecast, out to 14 days
where the models agree, and where they splitRottnest Island, Western Australia is at its warmest in Feb (average highs near 24°C) and coldest in Jul (lows around 14°C), with roughly 733 mm of precipitation across the year. Below, compare what European, American, German forecast for Rottnest Island right now, and see exactly where they disagree.
We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in Australia before you trust any single number.
Rottnest Island climate by month
average daytime high and overnight low across a typical year (1991-2020)Source: 1991-2020 averages, ERA5 for this place adjusted with NASA POWER.
How the weather around Rottnest Island has changed since 1995
Rottnest Island sits in the same roughly 50 km square of NASA's reanalysis as Perth. That square shows no clear change in temperature between 1995-2004 and 2015-2024. See the full 30-year picture on the Perth page.
Which forecast is most accurate in Rottnest Island?
CheckWeather Score, graded against the weather that actually happened
The CheckWeather Score blends temperature, wind and rain accuracy, each measured against ERA5 (the recorded weather) over the last 30 days across 1558 cities. Lower error means a higher score. See which forecast model is most accurate in Australia, how we measure forecast accuracy, or which model each weather app uses.
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