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December Weather in Osny, France

Last updated: August 23, 2025

In Osny, France, the average temperature in December hovers around 6°C (43°F). Temperatures can dip as low as -3°C (27°F) and rise to a maximum of 15°C (59°F). This month sees significant precipitation, totaling 101 mm (4.0 in) over approximately 18 days. The air is quite humid, with an average humidity level of 93%, creating a distinct chill in the atmosphere.

December Temperature in Osny

In December in Osny, the average temperature is 6°C (43°F). The maximum can reach 15°C (59°F), and the minimum can be as low as -3°C (27°F). Be prepared for a chilly yet refreshing atmosphere, making it ideal for outdoor activities and cozy experiences.

December Weather in Osny: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Osny, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Osny, December typically has an average temperature of 6°C (43°F), with highs reaching up to 15°C (59°F) and lows dropping to around -3°C (27°F).
JanFebMarAprMayJunJulAugSepOctNovDec404346525765686761554643
Data source: Temperature data for Osny generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Osny

In Osny in December, the total precipitation amount is 101 mm (4.0 in) spread over 18 days.

December Precipitation Trends in Osny

The chart displays monthly precipitation patterns in Osny, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Osny, December typically receives around 101 mm (4.0 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec5467763673794758417765101
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Osny

In Osny in December, humidity is 93%. With an average temperature of 6°C (43°F), this humidity feels like a damp chill that seeps into your bones, making travel particularly uncomfortable and the air feel heavy, as though every step is met with resistance.

December Average Humidity in Osny

This chart illustrates the average monthly humidity levels in Osny, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Osny is approximately 93%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%85%84%82%80%73%68%76%88%92%93%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Osny

In Osny in December, the maximum UV index is 1, which corresponds to a low Exposure Category. This means you have a time to burn of 45 minutes. For more details, you can check the Hourly UV Index in Osny.

Maximum UV Index Levels in Osny for December

The chart shows the monthly maximum UV Index (UVI) for Osny in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In December, the maximum UV index in Osny typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec234689886421
Data source: Osny December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How December Weather in Osny Compares to Other Months

Weather in Osny varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Osny, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Osny, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (40°F)54 mm (2.1 inches)91%low
February Weather6°C (43°F)67 mm (2.6 inches)89%moderate
March Weather8°C (47°F)76 mm (3.0 inches)85%moderate
April Weather11°C (52°F)36 mm (1.4 inches)84%high
May Weather14°C (57°F)73 mm (2.9 inches)82%very high
June Weather18°C (65°F)79 mm (3.1 inches)80%very high
July Weather20°C (68°F)47 mm (1.8 inches)73%very high
August Weather19°C (67°F)58 mm (2.3 inches)68%very high
September Weather16°C (62°F)41 mm (1.6 inches)76%high
October Weather13°C (55°F)77 mm (3.0 inches)88%moderate
November Weather8°C (46°F)65 mm (2.6 inches)92%low
December Weather6°C (43°F)101 mm (4.0 inches)93%low

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