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December Weather in Slano, Croatia

Last updated: August 23, 2025

In Slano, Croatia, the average temperature in December hovers around 9°C (48°F). Expect minimums to drop to 0°C (32°F) and maximums to reach 17°C (63°F). Be prepared for wet weather, as 249 mm (9.8 in) of precipitation can be expected over 16 days. With an average humidity of 86%, it’s advisable to pack those cozy clothes and an umbrella!

December Temperature in Slano

In December in Slano, the average temperature is 9°C (48°F). Maximum temperatures can reach 17°C (63°F), while minimums can drop to as low as 0°C (32°F). Make sure to pack layers to stay comfortable while exploring the diverse weather conditions.

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

The chart illustrates December temperature patterns in Slano, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Slano, December typically has an average temperature of 9°C (48°F), with highs reaching up to 17°C (63°F) and lows dropping to around 0°C (32°F).
JanFebMarAprMayJunJulAugSepOctNovDec434750556371767770615547
Data source: Temperature data for Slano 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 Slano

In Slano in December, the precipitation amount is 249 mm (9.8 in) spread over 16 days.

December Precipitation Trends in Slano

The chart displays monthly precipitation patterns in Slano, 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 Slano, December typically receives around 249 mm (9.8 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec116162143118108533446111149293249
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Slano

In Slano in December, humidity is 86%. With an average temperature of 9°C (48°F), this humidity feels like a damp chill that wraps around you, making outdoor activities uncomfortable and travel less enjoyable.

December Average Humidity in Slano

This chart illustrates the average monthly humidity levels in Slano, 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 Slano is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%82%79%75%74%66%59%53%65%78%85%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Slano

In Slano in December, 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 Slano, you can visit Hourly UV Index in Slano.

Maximum UV Index Levels in Slano for December

The chart shows the monthly maximum UV Index (UVI) for Slano 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 Slano typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24679101097532
Data source: Slano 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 Slano Compares to Other Months

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

This table compares monthly weather conditions in Slano, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (43°F)116 mm (4.6 inches)88%low
February Weather8°C (47°F)162 mm (6.4 inches)82%moderate
March Weather10°C (50°F)143 mm (5.6 inches)79%high
April Weather13°C (56°F)118 mm (4.6 inches)75%high
May Weather17°C (63°F)108 mm (4.2 inches)74%very high
June Weather22°C (71°F)53 mm (2.1 inches)66%very high
July Weather24°C (76°F)34 mm (1.3 inches)59%very high
August Weather25°C (78°F)46 mm (1.8 inches)53%very high
September Weather21°C (70°F)111 mm (4.4 inches)65%high
October Weather16°C (61°F)149 mm (5.9 inches)78%moderate
November Weather13°C (55°F)293 mm (11.6 inches)85%moderate
December Weather9°C (48°F)249 mm (9.8 inches)86%low

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