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January Weather in Dej, Romania

Last updated: August 27, 2025

In January, the average temperature in Dej, Romania hovers around -3°C (27°F). Be prepared for a range of temperatures ranging from a chilly -21°C (-5°F) to a mild 10°C (51°F). Expect 46 mm (1.8 in) of precipitation spread over approximately 10 days, and don’t forget to bundle up, as the average humidity peaks at a brisk 93%.

January Temperature in Dej

In January in Dej, the average temperature is -3°C (27°F), with a maximum that can reach 10°C (51°F) and a minimum that can drop as low as -21°C (-5°F). Travelers should be prepared for a wide range of temperatures, from chilly days to potentially frigid nights.

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

The chart illustrates January temperature patterns in Dej, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Dej, January typically has an average temperature of -3°C (27°F), with highs reaching up to 10°C (51°F) and lows dropping to around -21°C (-5°F).
JanFebMarAprMayJunJulAugSepOctNovDec273440495866686960504234
Data source: Temperature data for Dej 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 Dej

In Dej in January, the precipitation amount is 46 mm (1.8 in) over the course of 10 days.

January Precipitation Trends in Dej

The chart displays monthly precipitation patterns in Dej, 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 Dej, January typically receives around 46 mm (1.8 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec46675954117111944963584779
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Dej

In Dej in January humidity is 93%. With an average temperature of -3°C (27°F), this humidity feels like a damp chill that seeps through your clothes, making travel uncomfortable and forcing you to bundle up against the biting cold while navigating the wet conditions.

January Average Humidity in Dej

This chart illustrates the average monthly humidity levels in Dej, 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 Dej is approximately 93%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%88%87%79%71%71%64%55%64%83%91%92%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Dej

In Dej 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 Dej, you can visit Hourly UV Index in Dej.

Maximum UV Index Levels in Dej for January

The chart shows the monthly maximum UV Index (UVI) for Dej 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 Dej typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689987422
Data source: Dej 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 Dej Compares to Other Months

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

This table compares monthly weather conditions in Dej, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)46 mm (1.8 inches)93%low
February Weather1°C (34°F)67 mm (2.6 inches)88%moderate
March Weather4°C (40°F)59 mm (2.3 inches)86%moderate
April Weather10°C (50°F)54 mm (2.1 inches)79%high
May Weather14°C (58°F)117 mm (4.6 inches)71%very high
June Weather19°C (66°F)111 mm (4.4 inches)71%very high
July Weather20°C (68°F)94 mm (3.7 inches)64%very high
August Weather21°C (70°F)49 mm (1.9 inches)55%very high
September Weather16°C (60°F)63 mm (2.5 inches)64%high
October Weather10°C (51°F)58 mm (2.3 inches)83%moderate
November Weather6°C (42°F)47 mm (1.9 inches)91%low
December Weather1°C (34°F)79 mm (3.1 inches)92%low

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