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January Weather in Slanje, Croatia

Last updated: August 23, 2025

In January, the average temperature in Slanje, Croatia hovers around 1°C (34°F), with a minimum dipping as low as -15°C (5°F) and a maximum reaching 15°C (59°F). Expect some precipitation, with an average of 33 mm (1.3 in) spread over 6 days. Additionally, the air is quite moist, boasting an average humidity of 90%.

January Temperature in Slanje

In January in Slanje, the average temperature is 1°C (34°F). Maximums can reach 15°C (59°F), while minimums can drop as low as -15°C (5°F). It's advisable to pack layers and be prepared for varying conditions while traveling during this time.

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

The chart illustrates January temperature patterns in Slanje, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Slanje, January typically has an average temperature of 1°C (34°F), with highs reaching up to 15°C (59°F) and lows dropping to around -15°C (5°F).
JanFebMarAprMayJunJulAugSepOctNovDec343944536170727263544437
Data source: Temperature data for Slanje 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 Slanje

In Slanje, in January, the precipitation amount is 33 mm (1.3 in) over the course of 6 days.

January Precipitation Trends in Slanje

The chart displays monthly precipitation patterns in Slanje, 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 Slanje, January typically receives around 33 mm (1.3 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec336151561289711485107718277
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Slanje

In Slanje in January, humidity is 90%. With an average temperature of 1°C (34°F), this humidity feels like you're wrapped in a cold, damp blanket, making travel uncomfortable and requiring extra layers to combat the chill.

January Average Humidity in Slanje

This chart illustrates the average monthly humidity levels in Slanje, 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 Slanje is approximately 90%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%84%78%73%71%73%70%60%65%84%89%89%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Slanje

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

Maximum UV Index Levels in Slanje for January

The chart shows the monthly maximum UV Index (UVI) for Slanje 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 Slanje typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689986422
Data source: Slanje 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 Slanje Compares to Other Months

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

This table compares monthly weather conditions in Slanje, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)33 mm (1.3 inches)90%low
February Weather4°C (40°F)61 mm (2.4 inches)84%moderate
March Weather7°C (45°F)51 mm (2.0 inches)78%moderate
April Weather12°C (53°F)56 mm (2.2 inches)73%high
May Weather16°C (61°F)128 mm (5.0 inches)71%very high
June Weather21°C (71°F)97 mm (3.8 inches)73%very high
July Weather22°C (72°F)114 mm (4.5 inches)70%very high
August Weather22°C (72°F)85 mm (3.3 inches)60%very high
September Weather17°C (63°F)107 mm (4.2 inches)65%high
October Weather12°C (54°F)71 mm (2.8 inches)84%moderate
November Weather7°C (45°F)82 mm (3.2 inches)89%low
December Weather3°C (38°F)77 mm (3.0 inches)89%low

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