Cesson-Sévigné Temperature by Month

The average annual maximum temperature in Cesson-Sévigné, Brittany, France is 17°C (63°F), with daytime highs ranging from 10°C (50°F) in January to 25°C (77°F) in July. This page covers monthly averages, day-night differences, and how Cesson-Sévigné compares to cities worldwide.

With significant temperature fluctuations, Cesson-Sévigné enjoys distinct seasons year-round. Nighttime lows range from 14°C (57°F) in July to 3°C (37°F) in January.

The chart below illustrates the average maximum day and minimum night temperatures in Cesson-Sévigné by month:

The coldest point of the day usually falls between 4 AM and 6 AM, with temperatures peaking around 3 PM. July, the city's warmest month, gets 212 hours of sunshine.

The chart below shows the average temperature throughout the year:

Cesson-Sévigné'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:

Lisbon, Portugal averages 21°C (70°F) annually, warm summers, mild winters, and rain mainly in the cooler months.

Queenstown, New Zealand averages 10°C (50°F) annually, remember seasons are flipped, so its coldest months fall in June and July.

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.

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 Cesson-Sévigné, January is the coolest month, with average highs of 10°C (50°F) and humidity around 87%, considered very high. In July, the warmest month, temperatures average 25°C (77°F) with 75% 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.

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 Cesson-Sévigné's weather, including monthly rainfall, sunshine hours, and humidity, visit our Cesson-Sévigné climate page.