Hillarys Temperature by Month
The average annual maximum temperature in Hillarys, Western Australia, Australia is 24°C (75°F), with daytime highs ranging from 19°C (66°F) in July to 30°C (86°F) in February. This page covers monthly averages, day-night differences, and how Hillarys compares to cities worldwide.
Hillarys Monthly Temperatures
Visitors to Hillarys will encounter a climate influenced by big temperature differences across the year. Nighttime temperatures range from 20°C (68°F) in February to 11°C (52°F) in July.
The chart below illustrates the average maximum day and minimum night temperatures in Hillarys by month:
The coolest part of the day is typically between 4 AM and 6 AM, while 3 PM is usually the warmest, when solar heating is at its peak. February, the city's warmest month, averages 320 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Hillarys vs Australia
The map below shows the annual temperature across Australia. You can also select individual months if you want to compare a specific time of year.
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Hillarys vs World: Temperature Compared
Hillarys's average annual maximum temperature is 24°C (75°F). To put that in context, here's how it compares to a few well-known destinations:
Rome, Italy averages 20°C (68°F) annually, with reliably warm summers and comfortable winters.
Reykjavík, Iceland averages 9°C (48°F) a year — mild summers by Icelandic standards, but cold winters and frequent wind.
Seoul, South Korea averages 18°C (64°F) a year, with four clear seasons, cold winters, and hot humid summers.
Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.
What Does the Temperature Feel Like in Hillarys?
Temperature alone doesn't tell the whole story — humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In Hillarys, July is the coolest month, with average highs of 19°C (66°F) and humidity around 57% — considered moderate. In February, the warmest month, temperatures average 30°C (86°F) with 38% humidity — conditions that feel low. For a full picture, see our humidity page.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Whether a city sits on the coast or deep inland makes a significant difference to its climate. Coastal areas tend to have more stable temperatures year-round — large bodies of water absorb heat slowly in summer and release it gradually in winter, keeping extremes in check. Cities far from the sea don't benefit from that buffer, which is why continental climates tend to have hotter summers and colder winters than their coastal counterparts at the same latitude.
For more on Hillarys's weather — including monthly rainfall, sunshine hours, and humidity — visit our Hillarys climate page.
