Aosta Temperature by Month
The average annual maximum temperature in Aosta, Valle d'Aosta, Italy is 6°C (43°F), with daytime highs ranging from -5°C (23°F) in January to 17°C (63°F) in July. This page covers monthly averages, day-night differences, and how Aosta compares to cities worldwide.
Aosta Monthly Temperatures
In Aosta, temperatures differ significantly between summer and winter months. Nighttime lows reflect this range, dropping from 7°C (45°F) in July to -12°C (10°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Aosta by month:
Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM. July, the city's warmest month, sees 275 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Aosta vs Italy
The map below shows the annual temperature across Italy. You can also select individual months if you want to compare a specific time of year.
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Aosta vs World: Temperature Compared
Aosta's average annual maximum temperature is 6°C (43°F). To put that in context, here's how it compares to a few well-known destinations:
Athens, Greece sits at 23°C (73°F) on average, with hot dry summers and mild winters characteristic of the Mediterranean.
Zermatt, Switzerland averages just 4°C (39°F) annually due to its altitude, with very cold winters and cool summers even at its warmest.
Beijing, China averages 20°C (68°F) annually, but with big seasonal swings — very cold winters and hot summers.
Brisbane, Australia averages 26°C (79°F) a year, with warm winters and hot, humid summers.
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.
For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained — so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.
For more on Aosta's weather — including monthly rainfall, sunshine hours, and humidity — visit our Aosta climate page.
