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January Weather in Sully, France

Last updated: August 23, 2025

In Sully, France, the average temperature in January hovers around 3°C (37°F). Be prepared for chilly conditions, as temperatures can dip to a minimum of -11°C (13°F) and reach a maximum of 14°C (57°F). Expect about 73 mm (2.9 in) of precipitation, typically spread across 11 days of the month, with humidity levels averaging a crisp 91%. Stay warm and dry as you explore this wintery wonderland!

January Temperature in Sully

In January in Sully, the average temperature is 3°C (37°F). Maximums can reach 14°C (57°F), and minimums can be as low as -11°C (13°F). Travelers should be prepared for chilly conditions, so it's best to pack warm clothing for this time of year.

January Weather in Sully: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Sully, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sully, January typically has an average temperature of 3°C (37°F), with highs reaching up to 14°C (57°F) and lows dropping to around -11°C (13°F).
JanFebMarAprMayJunJulAugSepOctNovDec374145515766706962534340
Data source: Temperature data for Sully 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.

January Precipitation in Sully

In Sully in January, the precipitation amount is 73 mm (2.9 in), spread over 11 days.

January Precipitation Trends in Sully

The chart displays monthly precipitation patterns in Sully, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Sully, January typically receives around 73 mm (2.9 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec7360814689786146517974124
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Sully

In Sully in January, humidity is 91%. With an average temperature of 3°C (37°F), this humidity feels like a damp chill that seeps into your bones, making travel quite uncomfortable and requiring you to dress in layers to stay warm while battling the oppressive mugginess.

January Average Humidity in Sully

This chart illustrates the average monthly humidity levels in Sully, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Sully is approximately 91%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%86%84%82%82%79%72%78%88%91%93%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Sully

In Sully in January, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Sully, you can visit Hourly UV Index in Sully.

Maximum UV Index Levels in Sully for January

The chart shows the monthly maximum UV Index (UVI) for Sully in January, 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 January, the maximum UV index in Sully typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689986421
Data source: Sully January 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 January Weather in Sully Compares to Other Months

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

This table compares monthly weather conditions in Sully, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)73 mm (2.9 inches)91%low
February Weather5°C (41°F)60 mm (2.3 inches)89%moderate
March Weather7°C (46°F)81 mm (3.2 inches)86%moderate
April Weather11°C (52°F)46 mm (1.8 inches)84%high
May Weather14°C (58°F)89 mm (3.5 inches)82%very high
June Weather19°C (67°F)78 mm (3.1 inches)82%very high
July Weather21°C (70°F)61 mm (2.4 inches)79%very high
August Weather21°C (69°F)46 mm (1.8 inches)72%very high
September Weather17°C (62°F)51 mm (2.0 inches)78%high
October Weather12°C (54°F)79 mm (3.1 inches)88%moderate
November Weather6°C (44°F)74 mm (2.9 inches)91%low
December Weather5°C (40°F)124 mm (4.9 inches)93%low

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