Port Arthur Temperature by Month
Port Arthur, Tasmania, Australia has a consistently moderate climate year-round, with daytime highs averaging 16°C (61°F). Below you'll find a full monthly breakdown and a comparison with cities worldwide.
Port Arthur Monthly Temperatures
The climate in Port Arthur remains fairly constant, offering moderate temperatures throughout the year. Maximum daytime temperatures reach a pleasant 19°C (66°F) in February, dropping to a moderate 13°C (55°F) in August. Nighttime lows stay between 14°C (57°F) and 9°C (48°F).
The chart below illustrates the average maximum day and minimum night temperatures in Port Arthur by month:
Temperatures tend to bottom out between 4 AM and 6 AM, then climb to their daily peak around 3 PM. February, the warmest month, sees 218 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Port Arthur 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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Port Arthur vs World: Temperature Compared
Port Arthur's average annual maximum temperature is 16°C (61°F). To put that in context, here's how it compares to a few well-known destinations:
Barcelona, Spain has an annual average of around 21°C (70°F), with warm summers and mild, fairly short winters.
Toronto, Canada averages 13°C (55°F) annually, with cold snowy winters balanced by genuinely warm summers.
Osaka, Japan averages 22°C (72°F) annually, with hot humid summers, mild winters, and pleasant spring and autumn seasons.
Perth, Australia averages 25°C (77°F) annually, with a classic Mediterranean climate — hot dry summers and mild wet winters.
What Does the Temperature Feel Like in Port Arthur?
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 Port Arthur, August is the coolest month, with average highs of 13°C (55°F) and humidity around 56% — considered moderate. 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 Port Arthur's weather — including monthly rainfall, sunshine hours, and humidity — visit our Port Arthur climate page.
