Jouy-en-Josas Temperature by Month
Jouy-en-Josas in Ile de France, France sees significant seasonal temperature differences, with daytime highs between 8°C (46°F) in January and 26°C (79°F) in August, averaging 17°C (63°F) annually. Explore the full monthly breakdown below.
Jouy-en-Josas Monthly Temperatures
The weather in Jouy-en-Josas experiences significant differences between warm and cold seasons, with big shifts in temperature. At night, minimum temperatures range from 14°C (57°F) in August to 2°C (36°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Jouy-en-Josas by month:
The coolest part of the day is typically between 4 AM and 6 AM, while 3 PM is usually the warmest, when solar heating is at its peak. August, the city's warmest month, averages 214 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Jouy-en-Josas 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.
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Jouy-en-Josas vs World: Temperature Compared
Jouy-en-Josas'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:
Barcelona, Spain has an annual average of around 21°C (70°F), with warm summers and mild, fairly short winters.
On the cooler end, Oslo, Norway averages just 10°C (50°F) annually, with pleasant summers but long, cold winters.
Osaka, Japan averages 22°C (72°F) annually, with hot humid summers, mild winters, and pleasant spring and autumn seasons.
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 Jouy-en-Josas?
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 Jouy-en-Josas, January is the coolest month, with average highs of 8°C (46°F) and humidity around 83% — considered very 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.
Seasonal temperature shifts influence more than just how warm it feels — they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.
Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Jouy-en-Josas this rarely lasts long on the ground.
For more on Jouy-en-Josas's weather — including monthly rainfall, sunshine hours, and humidity — visit our Jouy-en-Josas climate page.
