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December Weather in Illana, Spain

Last updated: August 27, 2025

In December, the average temperature in Illana, Spain hovers around 6°C (44°F). Expect a chill, with minimum lows reaching -5°C (23°F) and highs climbing to 17°C (63°F). Rain may grace the region, delivering about 54 mm (2.1 in) over an average of 8 days. With an average humidity of 90%, prepare for a damp and cozy atmosphere during your stay!

December Temperature in Illana

In December in Illana, the average temperature is 6°C (44°F). The maximum can reach 17°C (63°F), and the minimum can be as low as -5°C (23°F). Travelers should be prepared for a range of temperatures, from chilly to mild, so layering clothing is advisable.

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

The chart illustrates December temperature patterns in Illana, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Illana, December typically has an average temperature of 6°C (44°F), with highs reaching up to 17°C (63°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec404649546372797869594843
Data source: Temperature data for Illana 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 Illana

In Illana in December, the total precipitation amount reaches 54 mm (2.1 in) over a span of 8 days.

December Precipitation Trends in Illana

The chart displays monthly precipitation patterns in Illana, 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 Illana, December typically receives around 54 mm (2.1 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec363565943726112035566954
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Illana

In Illana in December humidity is 90%. With an average temperature of 6°C (44°F), this humidity feels like a damp chill that clings to your skin, making outdoor excursions uncomfortable and requiring extra layers to stay warm and dry while exploring.

December Average Humidity in Illana

This chart illustrates the average monthly humidity levels in Illana, 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 Illana is approximately 90%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%86%79%74%71%63%59%58%66%77%87%90%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Illana

In Illana in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Illana, you can check the information here.

Maximum UV Index Levels in Illana for December

The chart shows the monthly maximum UV Index (UVI) for Illana 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 Illana typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3469101111108643
Data source: Illana 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 Illana Compares to Other Months

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

This table compares monthly weather conditions in Illana, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)36 mm (1.4 inches)90%moderate
February Weather8°C (46°F)35 mm (1.4 inches)86%moderate
March Weather10°C (49°F)65 mm (2.5 inches)79%high
April Weather12°C (54°F)94 mm (3.7 inches)74%very high
May Weather17°C (64°F)37 mm (1.5 inches)71%very high
June Weather22°C (73°F)26 mm (1.0 inches)63%extreme
July Weather26°C (79°F)11 mm (0.4 inches)59%extreme
August Weather26°C (79°F)20 mm (0.8 inches)58%very high
September Weather21°C (70°F)35 mm (1.4 inches)65%very high
October Weather15°C (59°F)56 mm (2.2 inches)77%high
November Weather9°C (48°F)69 mm (2.7 inches)87%moderate
December Weather6°C (44°F)54 mm (2.1 inches)90%moderate

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