December Weather in Serravalle, San Marino

Last updated: August 31, 2025

December in Serravalle, San Marino presents a charming winter tableau, where temperatures range from a pleasant 17°C (63°F) during the day to a crisp -1°C (31°F) at night, averaging around 7°C (46°F). The month is characterized by 78 mm (3.1 in) of precipitation over 11 days, creating a unique blend of overcast skies and occasional winter sunshine. With an average humidity level of 83%, the air feels distinctly fresh and invigorating, making it a picturesque time to experience the season's serene beauty in this historic enclave.

December Temperature in Serravalle

In December, temperatures in Serravalle, San Marino begin to dip further into winter, with minimums around -1°C (31°F). The chill in the air brings an average temperature of approximately 7°C (46°F), while highs can reach a mild 17°C (63°F), providing a noticeable contrast to the warmer months that precede it. As the year draws to a close, the temperatures reflect a clear decline from the autumn months, yet remain relatively mild compared to the frigid January and February conditions that follow. This transitional period, with its crisp air and intermittent mild days, makes December an enchanting time to experience the charm of Serravalle, setting the stage for winter festivities amidst beautiful landscapes.

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

The chart illustrates December temperature patterns in Serravalle, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Serravalle, December typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec424649556373777769615345
Data source: Temperature data for Serravalle generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Serravalle

December in Serravalle, San Marino, wraps up the year with a notable precipitation total of 78 mm (3.1 in), spread over 11 days of rainfall. This month reflects a consistent pattern of wet weather, tying closely with November’s heavier total of 95 mm (3.7 in), indicating that late autumn and early winter are marked by significant moisture. While December’s rainfall is slightly lower than the preceding month, it still contributes to the noteworthy trend of increased precipitation during the fall, particularly compared to the drier summer months. The steady rainfall not only enriches the landscape but also highlights a shift from the drier summer to a more moist climate as the region moves into winter.

December Precipitation Trends in Serravalle

The chart displays monthly precipitation patterns in Serravalle, 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 Serravalle, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec418158548639554993789578
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Serravalle

December in Serravalle, San Marino, wraps up the year with a humidity level of 83%, showing a slight dip from November's 84%. This month typically signals a gradual transition as the year progresses, following a trend of decreasing humidity from the peak summer months of July and August, which recorded the lowest figures at 57% and 55% respectively. As autumn unfolds, humidity levels rise again, peaking in late fall. The notable increase from the summer lows illustrates Serravalle's distinctive seasonal shifts, enhancing its cool winter ambiance, while still maintaining a characteristic dampness that contributes to the region's vibrant greenery.

December Average Humidity in Serravalle

This chart illustrates the average monthly humidity levels in Serravalle, 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 Serravalle is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%76%68%70%69%62%57%55%66%79%84%83%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Serravalle

In December, Serravalle, San Marino experiences a low UV Index of 2, resulting in a more forgiving exposure level with a burn time of 45 minutes. This marks a significant drop from the peak summer months, where UV levels reached as high as 9 in June and July, demanding only 15 minutes of safe sun exposure. As the year transitions towards winter, UV Index values steadily decline from 8 in May to a mere 2, suggesting that the sun’s intensity diminishes considerably, allowing for longer outdoor activities without the same risk of sunburn. For more detailed insights on UV levels throughout the year, visit Serravalle UV Index.

Maximum UV Index Levels in Serravalle for December

The chart shows the monthly maximum UV Index (UVI) for Serravalle 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 Serravalle typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec246789987532
Data source: Serravalle 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.

December Sunshine in Serravalle

As the year draws to a close, December in Serravalle, San Marino offers a gentle farewell to daylight, with 222 hours of sunshine. This modest total reflects a nostalgic shift from the height of summer, where July basked in 429 hours, illuminating the vibrant landscapes and lively streets. Conversely, warmer months like June and May also contributed significantly, showing a strong trend of increasing sunshine as spring melted into summer. However, as autumn settled in, sunshine hours gradually dwindled, with November seeing just 231 hours before December's calm conclusion. The patterns woven through the months highlight a rhythm of seasonal change, punctuated by the soft warmth of the sun, making each moment even more cherished as the year gently fades into winter's embrace.

Monthly Sunshine Duration in Serravalle: December Highlighted

The December sunshine duration represents the total number of hours Serravalle experiences direct sunlight during the month of December, excluding cloudy or obstructed periods. This chart compares the sunshine duration of December with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec184h231h316h352h395h422h429h400h339h306h231h222h
Data source: Serravalle December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Serravalle During December

As December arrives in Serravalle, San Marino, the likelihood of sunny weather dips slightly to 42%, reflecting a transition into the winter months. This figure stands in contrast to the more promising sun-filled days earlier in the year, with the chances peaking at 69% in March and remaining higher during the summer. While December experiences a notable decline from the sunnier months, it still offers a better chance of sun than the months of November and October, which see lower probabilities of clear skies. So, while December may not boast the brightest forecasts, it still holds a reasonable promise for those seeking a glimpse of sunshine amidst the winter chill.

Percentage of Sunny Days in December in Serravalle

The chart illustrates the percentage of sunny days in Serravalle throughout the year, with December highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Serravalle experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec36%49%69%50%53%62%59%63%55%39%24%42%
Data source: Serravalle December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Serravalle in December

In Serravalle, San Marino, daylight duration experiences a noticeable ebb and flow throughout the year. Starting with a modest 8 hours in December, the daylight steadily increases as winter gives way to spring, peaking at a vibrant 15 hours in June and July. Following the summer solstice, this illumination gradually tapers off into autumn, settling back to 9 hours by November. The transition highlights the region's seasonal rhythm, with each month bringing subtle changes that invite both reflection and appreciation for the shifting light.

Average Daylight Hours in Serravalle for December

The chart illustrates the variation in daylight duration in Serravalle throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 18m10h 28m11h 57m13h 27m14h 45m15h 24m15h 3m13h 54m12h 27m10h 57m9h 37m8h 56m
Data source: Serravalle daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Serravalle

As December wraps Serravalle, San Marino in a chilly embrace, the average wind speed settles at 2.6 m/s (6 mph), marking a gentle decline as winter approaches. This month usually witnesses the calmest breezes of the year, following a slight uptick in October's winds, which reached 3.3 m/s (7 mph). The trend across the colder months reveals a natural rhythm: from the mild gusts of early fall to the serene stillness of late autumn. While the winds generally whisper through the landscapes of Serravalle in December, the fluctuating patterns create a soothing atmosphere, perfect for cozy gatherings as the year winds down.

Average December Wind Speed in Serravalle

The chart displays monthly wind speed patterns in Serravalle, with values for each month shown alongside December's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how December's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.22.82.92.93.52.72.92.72.13.33.02.6 m/s
Data source: Serravalle December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Serravalle Compares to Other Months

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

In December, temperatures range from a chilly minimum of -1°C (31°F) to a maximum of 17°C (63°F), with an average of 7°C (46°F). The month sees a fair amount of rainfall, totaling 78 mm (3.1 in) over approximately 11 days, and maintains a high humidity level of 83%.

In contrast, January experiences slightly cooler conditions, with minimum temperatures dropping to -3°C (27°F) and a maximum of 15°C (59°F). The average temperature is a bit lower at 6°C (43°F), and precipitation decreases significantly to 41 mm (1.6 in) over 8 days. Humidity remains relatively high at 84%.

For a more detailed look at January weather in Serravalle, you can visit Serravalle weather in January.

In December, temperatures in Serravalle range from a minimum of -1°C (31°F) to a maximum of 17°C (63°F), with an average temperature of 7°C (46°F). The month experiences about 78 mm (3.1 in) of precipitation over 11 days, and humidity levels are relatively high at 83%.

In contrast, February sees slightly cooler temperatures, with a minimum of -5°C (23°F) and a maximum of 18°C (64°F), while maintaining an average temperature of 8°C (46°F). Precipitation increases slightly to 81 mm (3.2 in) but is distributed over just 9 days, creating a less humid atmosphere at 76%. For more detailed information about February weather, you can visit Serravalle weather in February.

December and March exhibit notable differences in weather patterns. In December, temperatures range from a chilly minimum of -1°C (31°F) to a mild maximum of 17°C (63°F), with an average of 7°C (46°F). This month sees a higher humidity level of 83% and experiences 78 mm (3.1 in) of precipitation over 11 days. In contrast, March brings slightly colder conditions, with minimum temperatures plunging to -7°C (19°F) and a maximum reaching 20°C (68°F), while the average temperature is 9°C (49°F). Precipitation decreases to 58 mm (2.3 in) over just 7 days, and humidity is lower at 68%. For more detailed insights about the weather in March, visit Serravalle weather in March.

December and April present contrasting weather patterns, each with its unique characteristics. In December, temperatures range from a chilly -1°C (31°F) at night to a mild 17°C (63°F) during the day, with an average of 7°C (46°F). The month also sees significant precipitation, totaling 78 mm (3.1 in) over about 11 days, accompanied by a high humidity level of 83%. In contrast, April enjoys a more temperate climate, with minimum temperatures of 1°C (35°F) and maximums reaching 24°C (76°F), averaging 13°C (56°F). This month is generally drier, receiving 54 mm (2.1 in) of rain over just 9 days and experiencing lower humidity levels of 70%. For a closer look at the weather specifics in April, you can check Serravalle weather in April.

December and May display contrasting weather patterns, highlighting the shift from winter to spring. In December, temperatures can drop to a minimum of -1°C (31°F) with an average of 7°C (46°F) and a maximum of 17°C (63°F). This month experiences around 78 mm (3.1 in) of precipitation over 11 days and a relatively high humidity of 83%. In contrast, May brings milder temperatures, with a minimum of 8°C (46°F), an average of 17°C (64°F), and highs reaching up to 28°C (82°F). Although the precipitation slightly increases to 86 mm (3.4 in) over 12 days, the humidity drops to 69%, creating a more comfortable atmosphere. For more details on the pleasant weather conditions in May, check out Serravalle weather in May.

In December, the weather is quite chilly, with temperatures ranging from a minimum of -1°C (31°F) to a maximum of 17°C (63°F) and an average of 7°C (46°F). The month also sees considerable precipitation, totaling 78 mm (3.1 in) over 11 days, contributing to a high humidity level of 83%. In contrast, June brings much warmer conditions, with temperatures soaring from a minimum of 12°C (54°F) to a maximum of 33°C (92°F) and an average temperature of 23°C (73°F). Rainfall is significantly lighter in June, totaling just 39 mm (1.5 in) over 5 days, and humidity levels drop to 62%. The stark difference between these two months highlights a shift from the cold, wet weather of December to the warm, dry days of June. For more specific details, check out Serravalle weather in June.

When comparing the weather in December and July, the differences are striking. December brings cooler temperatures, with averages around 7°C (46°F) and a maximum of 17°C (63°F), while July boasts a much warmer average of 25°C (77°F) and peaks at 33°C (92°F). Precipitation is also more frequent in December, with 78 mm (3.1 in) of rain over 11 days, compared to July’s 55 mm (2.2 in) over just 6 days. Additionally, December's humidity is notably higher at 83%, creating a much chillier atmosphere than July’s more comfortable 57% humidity. For more specific insights into July's weather, you can check out the details here: Serravalle weather in July.

The weather in December is notably cooler compared to August, with temperatures ranging from a chilly -1°C (31°F) at night to a mild 17°C (63°F) during the day. In contrast, August features warm temperatures with a minimum of 15°C (59°F) and a maximum soaring to 36°C (96°F), making it a much hotter month overall. While December sees more rain, totaling 78 mm (3.1 in) across 11 days, August has lighter precipitation, around 49 mm (1.9 in) over just 6 days. Additionally, humidity levels are higher in December at 83%, whereas August enjoys a comfortable 55% humidity. For more detailed information, you can check Serravalle weather in August.

When comparing the weather in December and September, it’s clear that both months present distinct climates. September is typically warmer, with average temperatures ranging from a minimum of 10°C (50°F) to a maximum of 31°C (88°F), and boasts lower humidity levels at 66%. In contrast, December experiences much cooler temperatures, with a minimum of -1°C (31°F) and an average of 7°C (46°F), alongside higher humidity at 83%. Precipitation is similar between the two months, with September slightly ahead at 93 mm (3.7 in) over 10 days, compared to December's 78 mm (3.1 in) over 11 days. For more detailed insights into September's climate, you can visit Serravalle weather in September.

In comparing the weather between December and October, December tends to be significantly cooler, with average temperatures ranging from a minimum of -1°C (31°F) to a maximum of 17°C (63°F), while October enjoys milder temperatures with a range of 8°C (46°F) to 27°C (81°F). Both months experience similar levels of precipitation at 78 mm (3.1 in), but December has a slightly higher number of rainy days at 11 compared to October's 8 days. Additionally, December's humidity is a touch higher at 83%, compared to October's 79%. For more details on October weather, you can check Serravalle weather in October.

In comparing the weather of December and November, December tends to be cooler, with an average temperature of 7°C (46°F) compared to November's 12°C (53°F). The minimum temperatures in December reach -1°C (31°F), while November's minimum is slightly milder at 2°C (36°F). Although December has less total precipitation at 78 mm (3.1 in) over 11 days, compared to November's 95 mm (3.7 in) over 12 days, the humidity levels remain comparable, with December at 83% and November at 84%. For more details on November's conditions, you can refer to this link: Serravalle weather in November.

Compare Serravalle's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Serravalle

As December arrives in Serravalle, the weather undergoes a significant transformation compared to the milder months preceding it. Although the maximum temperatures can still reach a pleasant 17°C, the average dips to a cooler 7°C, while chilly nights can see temperatures plunging to -1°C. This month also brings increased precipitation, with about 11 days of rain and a humidity level that hovers around 83%, creating a distinctly moist atmosphere. The contrast to the drier months highlights the shift toward a more wintry climate, making December a time for cozy gatherings and festive celebrations. For those curious to learn more about the overall climate, you can explore Serravalle Climate.