Guillestre Temperature by Month
The average annual maximum temperature in Guillestre, Provence-Alpes-Côte d'Azur, France is 8°C (46°F), with daytime highs ranging from -3°C (27°F) in January to 19°C (66°F) in August. This page covers monthly averages, day-night differences, and how Guillestre compares to cities worldwide.
Guillestre Monthly Temperatures
Depending on the time of the year, temperatures range from pleasant to very cold in Guillestre. Nighttime lows follow the same pattern, ranging from 7°C (45°F) to -11°C (12°F).
The chart below illustrates the average maximum day and minimum night temperatures in Guillestre by month:
Daily lows are most common between 4 AM and 6 AM. By 3 PM temperatures reach their daily high, driven by peak solar heating.
The chart below shows the average temperature throughout the year:
Temperature: Guillestre vs France
The map below shows the annual temperature across France. You can also select individual months if you want to compare a specific time of year.
very warm
warm
pleasant
moderate
cold
very cold
Guillestre vs World: Temperature Compared
Guillestre's average annual maximum temperature is 8°C (46°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.
Interlaken, Switzerland averages 8°C (46°F) a year, with cold winters and cool summers thanks to its Alpine setting.
Buenos Aires, Argentina averages 23°C (73°F) a year, with hot summers and mild winters — and seasons reversed compared to Europe.
Melbourne, Australia averages 20°C (68°F) annually — known for unpredictable weather, with four seasons sometimes happening in one day.
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 Guillestre's weather — including monthly rainfall, sunshine hours, and humidity — visit our Guillestre climate page.
