Marly-le-Roi Weather in December
What's the weather like in Marly-le-Roi (Île-de-France) in December 2025?
The climate in Marly-le-Roi during December can be summarized as cool and reasonably dry.
December is in the winter in Marly-le-Roi and is typically the 2nd coldest month of the year. Daytime maximum temperatures average around a cold 7°C (44°F), whilst at night 2°C (36°F) is normal.
| Daytime temperature | 6.5°C 43.7°F |
|---|---|
| Nightly temperature | 2.1°C 35.8°F |
| Average temperature | 4.3°C 39.7°F |
| Daily sunshine | 2 hrs |
| Avg rainfall | 55 mm 2.2 ins |
| Rainy days | 16 days |
| Sea temperature | 11.3°C 52.3°F |
| Humidity | 91% |
| Windspeed | 14.4kph 9 mph |
On average December is the 5th wettest month of the year in Marly-le-Roi with around 55mm 2.2 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 16 days, although this may vary considerably.
On the flip side this corresponds to an average of 2 hours of sunshine per day.
December temperatures in Marly-le-Roi
December rainfall
December hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Marly-le-Roi in December 2025.
Other monthly averages
Best places to visit in December
Marly-le-Roi weather stats
| Hottest month: | July | 22.9°C 73.2°F |
|---|---|---|
| Driest month: | February | 44mm 1.7ins |
| Sunniest month: | August | 7.8hrs |
| Coldest month: | January | 5.7°C 42.3°F |
| Wettest month: | May | 62mm 2.4ins |
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