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December Weather in San Pier d'Isonzo, Italy

Last updated: August 23, 2025

In December, the average temperature in San Pier d'Isonzo, Italy hovers around 8°C (47°F), with lows dipping to 2°C (36°F) and highs reaching up to 15°C (60°F). Be prepared for some rain, as the area experiences an average precipitation of 164 mm (6.5 in) over approximately 13 days. You'll also notice the air feels quite humid, with an average humidity level of 88%.

December Temperature in San Pier d'Isonzo

In December in San Pier d'Isonzo, the average temperature is 8°C (47°F). The maximum can reach 15°C (60°F) and the minimum can be as low as 2°C (36°F). This mild climate makes San Pier d'Isonzo a comfortable destination for travelers seeking a pleasant escape.

December Weather in San Pier d'Isonzo: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in San Pier d'Isonzo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Pier d'Isonzo, December typically has an average temperature of 8°C (47°F), with highs reaching up to 15°C (60°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec434548556373767769615446
Data source: Temperature data for San Pier d'Isonzo 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 San Pier d'Isonzo

In San Pier d'Isonzo in December, the precipitation amount is 164 mm (6.5 in) spread over 13 days, indicating a relatively wet period for the region.

December Precipitation Trends in San Pier d'Isonzo

The chart displays monthly precipitation patterns in San Pier d'Isonzo, 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 San Pier d'Isonzo, December typically receives around 164 mm (6.5 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec6212275111144916267183135214164
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in San Pier d'Isonzo

In San Pier d'Isonzo in December, humidity is 88%. With an average temperature of 8°C (47°F), this humidity feels like a thick, damp blanket wrapping around you, making even short walks feel heavy and uninviting for travel.

December Average Humidity in San Pier d'Isonzo

This chart illustrates the average monthly humidity levels in San Pier d'Isonzo, 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 San Pier d'Isonzo is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%82%73%73%70%69%63%51%64%83%89%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in San Pier d'Isonzo

In San Pier d'Isonzo 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 San Pier d'Isonzo, you can visit Hourly UV Index in San Pier d'Isonzo.

Maximum UV Index Levels in San Pier d'Isonzo for December

The chart shows the monthly maximum UV Index (UVI) for San Pier d'Isonzo 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 San Pier d'Isonzo typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689987532
Data source: San Pier d'Isonzo 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 San Pier d'Isonzo Compares to Other Months

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

This table compares monthly weather conditions in San Pier d'Isonzo, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (43°F)61 mm (2.4 inches)88%low
February Weather7°C (46°F)122 mm (4.8 inches)82%moderate
March Weather9°C (49°F)75 mm (2.9 inches)73%moderate
April Weather13°C (56°F)111 mm (4.4 inches)73%high
May Weather17°C (63°F)144 mm (5.7 inches)70%very high
June Weather23°C (73°F)91 mm (3.6 inches)69%very high
July Weather24°C (76°F)62 mm (2.5 inches)63%very high
August Weather25°C (78°F)67 mm (2.6 inches)51%very high
September Weather21°C (70°F)183 mm (7.2 inches)64%high
October Weather16°C (62°F)135 mm (5.3 inches)83%moderate
November Weather12°C (54°F)214 mm (8.4 inches)89%moderate
December Weather8°C (47°F)164 mm (6.5 inches)88%low

Compare San Pier d'Isonzo's Climate with Cities Worldwide