Mantes-la-Jolie Sunshine Hours by Month

Sunshine is key to understanding how a place experiences its seasons. This page shows the total number of hours of direct sunlight per month and the average hours per day in Mantes-la-Jolie, Ile de France, France. The numbers reflect climate data gathered over a 30-year period, from 1990 to 2020.

Monthly hours of sunshine

If you're visiting Mantes-la-Jolie, timing is key. In July, you can enjoy up to 224 hours of sunshine, while the shorter days of December provide just 58 hours. The total annual amount of sun is 1725 hours.

Daily hours of sunshine

For those who appreciate different seasons, Mantes-la-Jolie serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 7.5 hours of sunshine daily, and embrace the darker days in December, offering only 1.9 hours of daily sunlight.

Average percent of sunshine

On average the sun shines 49% of the time during the day in August, the highest percentage of any month. January has the lowest percentage at 22%.

Mantes-la-Jolie enjoys an average of 1725 hours of sunshine annually. Let’s compare this with some popular tourist destinations:

In Barcelona, Spain, there are 2530 hours of sunshine annually and is a city that can be visited year-round.

In contrast, Reykjavík, Iceland, receives only about 1330 hours of sunshine per year, known for its frequently overcast and rainy skies.

Boston, USA, enjoys 2629 hours of sunshine annually, with distinct seasons and many bright, sunny days.

In Tokyo, Japan, the average annual sunshine is 1930 hours, with sunny periods between rainy seasons.

December, Mantes-la-Jolie’s wettest month, receives 61 mm (2.4 in) of rainfall and has a maximum daytime temperature of 9°C (48°F). During the driest month September you can expect a temperature of 22°C (72°F).

For more detailed insights into the city’s temperatures, check out our Temperature page. To explore more about precipitation patterns, visit our Mantes-la-Jolie Precipitation page.