Chilly-Mazarin Temperature by Month
Chilly-Mazarin in Ile de France, France sees significant seasonal temperature differences, with daytime highs between 8°C (46°F) in February and 26°C (79°F) in August, averaging 17°C (63°F) annually. Explore the full monthly breakdown below.
Chilly-Mazarin Monthly Temperatures
In Chilly-Mazarin, temperatures can shift dramatically between warm in summer and cold in winter. Nights follow the same pattern, with lows ranging from 14°C (57°F) in August to 2°C (36°F) in February.
The chart below illustrates the average maximum day and minimum night temperatures in Chilly-Mazarin by month:
Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM. August, the city's warmest month, sees 214 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Chilly-Mazarin 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
Chilly-Mazarin vs World: Temperature Compared
Chilly-Mazarin's average annual maximum temperature is 17°C (63°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.
Zermatt, Switzerland averages just 4°C (39°F) annually due to its altitude, with very cold winters and cool summers even at its warmest.
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 Chilly-Mazarin?
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 the cooler months, when temperatures drop below 10°C, high humidity makes the cold feel more cutting than it would in dry conditions.
In Chilly-Mazarin, February is the coolest month, with average highs of 9°C (48°F) and humidity around 78% — considered high. In August, the warmest month, temperatures average 26°C (79°F) with 71% humidity — conditions that feel high. 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 Chilly-Mazarin's weather — including monthly rainfall, sunshine hours, and humidity — visit our Chilly-Mazarin climate page.
