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January Weather in San Giacomo, Italy

Last updated: August 23, 2025

In San Giacomo, Italy, the average temperature in January hovers around 4°C (40°F). However, be prepared for a wide range, as temperatures can dip to a chilly -11°C (13°F) or rise to a pleasant 18°C (64°F). Expect about 75 mm (2.9 in) of precipitation over 10 days, contributing to the locale’s average humidity of 78%. 🌧️

January Temperature in San Giacomo

In January in San Giacomo, the average temperature is 4°C (40°F), with maximums that can reach 18°C (64°F) and minimums that can dip as low as -11°C (13°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for both cool and chilly days.

January Weather in San Giacomo: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in San Giacomo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Giacomo, January typically has an average temperature of 4°C (40°F), with highs reaching up to 18°C (64°F) and lows dropping to around -11°C (13°F).
JanFebMarAprMayJunJulAugSepOctNovDec404345525968737466585244
Data source: Temperature data for San Giacomo 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 San Giacomo

In San Giacomo in January, the precipitation amount is 75 mm (2.9 in) spread over a period of 10 days.

January Precipitation Trends in San Giacomo

The chart displays monthly precipitation patterns in San Giacomo, 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 San Giacomo, January typically receives around 75 mm (2.9 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec759210373533919308411217180
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in San Giacomo

In San Giacomo in January, humidity is 78%. With an average temperature of 4°C (40°F), this humidity feels like a chilly dampness that clings to your skin, making outdoor activities quite uncomfortable and travel less enjoyable as you navigate through the cold, damp air.

January Average Humidity in San Giacomo

This chart illustrates the average monthly humidity levels in San Giacomo, 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 San Giacomo is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%72%70%73%72%67%64%61%68%73%77%78%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in San Giacomo

In San Giacomo in January, 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 San Giacomo, you can check the information here.

Maximum UV Index Levels in San Giacomo for January

The chart shows the monthly maximum UV Index (UVI) for San Giacomo 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 San Giacomo typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec346891010108642
Data source: San Giacomo 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 San Giacomo Compares to Other Months

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

This table compares monthly weather conditions in San Giacomo, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)75 mm (2.9 inches)78%moderate
February Weather6°C (44°F)92 mm (3.6 inches)71%moderate
March Weather7°C (46°F)103 mm (4.1 inches)70%high
April Weather11°C (52°F)73 mm (2.9 inches)73%very high
May Weather15°C (60°F)53 mm (2.1 inches)72%very high
June Weather20°C (68°F)39 mm (1.5 inches)67%very high
July Weather23°C (73°F)19 mm (0.7 inches)64%very high
August Weather24°C (75°F)30 mm (1.2 inches)61%very high
September Weather19°C (67°F)84 mm (3.3 inches)68%very high
October Weather14°C (58°F)112 mm (4.4 inches)73%high
November Weather11°C (52°F)171 mm (6.7 inches)77%moderate
December Weather7°C (44°F)80 mm (3.1 inches)78%low

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