January Weather in San Siro, Italy

Last updated: March 24, 2025

January in San Siro, Italy is characterized by chilly temperatures and a notably humid atmosphere. With highs reaching 12°C (53°F) and lows plunging to a brisk -11°C (12°F), the month presents a sharp contrast in daily temperatures. On average, the temperature hovers around 1°C (35°F), making it essential for visitors to bundle up. Precipitation is common, with 48 mm (1.9 in) of rainfall spread across approximately 7 days, adding to the wintery feel. The humidity level stands at a significant 88%, contributing to the chill in the air. Overall, January in San Siro is a frosty yet picturesque month, perfect for enjoying the serene winter landscape.

January Temperature in San Siro

In January, San Siro, Italy, experiences a chilly winter, with temperatures typically ranging from a brisk -11°C (12°F) to a milder 12°C (53°F). As the month progresses, the average temperature hovers around 1°C (35°F), marking the heart of winter. This trend of cold weather begins to shift in February, where temperatures dip slightly, with a minimum of -12°C (10°F) but promises warmer afternoons, reaching up to 18°C (65°F). By March, signs of spring are evident, with a noticeable rise in the averages and maximum temperatures, reaching 20°C (68°F). Overall, January serves as a stark reminder of winter's grip, but it paves the way for the gradual thaw that follows in the upcoming months.

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

The chart illustrates January temperature patterns in San Siro, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec343843505665686861534436
Data source: Temperature data for San Siro 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 Siro

In January, San Siro, Italy, experiences a modest precipitation amount of 48 mm (1.9 in), marking a quiet start to the year. Rainfall typically arrives over approximately 7 days, suggesting a relatively dry month compared to its wetter counterparts in the spring and summer. As January transitions into February, precipitation slightly increases to 52 mm (2.0 in), accompanied by an additional day of rainfall. This gradual uptick signals the beginning of a trend where rainfall substantially rises as the months progress, reaching a peak in May with 202 mm (8.0 in). Notably, the frequency of rainy days also escalates, peaking during late spring and summer, which underscores a dynamic climatic shift in San Siro as the year advances. This makes January a tranquil precursor to the wetter months ahead, allowing residents to enjoy typical winter activities before the more prolific rainfall of spring unfolds.

January Precipitation Trends in San Siro

The chart displays monthly precipitation patterns in San Siro, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4852105162202219187222161223177108
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in San Siro

In January, San Siro experiences a notable humidity level of 88%, marking the start of the year with a lush, damp atmosphere. As the months progress, there is a gradual decline in humidity, reaching its lowest point in August at 64%. However, this downward trend is short-lived, as humidity begins to rise again into the fall months, spiking back to 87% in October. This cyclical pattern suggests that while winter and early spring embrace a moist climate, summer brings a refreshing reprieve before a return to a more humid environment as the year draws to a close, with November and December maintaining high levels at 88% and 85%, respectively.

January Average Humidity in San Siro

This chart illustrates the average monthly humidity levels in San Siro, with January's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how January's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec88%81%76%77%74%71%67%64%74%87%88%85%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in San Siro

In January, San Siro, Italy experiences a low UV Index of 2, indicating that sun exposure is relatively safe, with a burn time of about 45 minutes. As the months progress, UV levels rise steadily, peaking at 9 during the summer months of June, July, and August, categorized as very high, where even a brief 15-minute exposure can lead to skin damage. By February, the UV Index increases to 3, indicating a moderate risk, while March and April see a significant jump to a high UV Index of 6, reducing the safe burn time to 25 minutes. However, as autumn approaches, the UV Index gradually declines once again, falling back to 3 in November and returning to 2 in December. This pattern emphasizes the importance of sun protection as the year progresses and the intensity of the sun increases. For more detailed information, visit San Siro UV Index.

Maximum UV Index Levels in San Siro for January

The chart shows the monthly maximum UV Index (UVI) for San Siro 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.
JanFebMarAprMayJunJulAugSepOctNovDec236689997532
Data source: San Siro 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.

January Sunshine in San Siro

As the calendar turns to January in San Siro, Italy, residents and visitors can expect around 187 hours of sunshine, marking the beginning of the year with a modest glow. However, the days gradually brighten with each passing month, peaking at a glorious 422 hours in July, when the summer sun reigns supreme. The transition from winter to spring is notable, with February and March showcasing a leap to 236 and 311 hours respectively, inviting the hopeful allure of warmer days. April and May continue this uplifting trend, reaching 338 and 379 hours, as nature bursts into vibrant life. However, as summer gives way to autumn, the daylight hours begin to wane, culminating in 285 hours in October before settling at 207 and 209 hours for November and December. This rhythmic pattern of sunshine highlights San Siro's enchanting seasonal shifts, making each month a unique experience bathed in light.

Monthly Sunshine Duration in San Siro: January Highlighted

The January sunshine duration represents the total number of hours San Siro experiences direct sunlight during the month of January, excluding cloudy or obstructed periods. This chart compares the sunshine duration of January with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec187h236h311h338h379h403h422h381h326h285h207h209h
Data source: San Siro January Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in San Siro During January

In San Siro, Italy, January presents a 34% chance of sunny weather, marking it as one of the month's least promising for sun seekers. As winter wanes, there's a notable uptick in sunshine, with February seeing a slight increase to 42%. This upward trend continues into spring, where March enjoys a significant leap to 62% and April retains a healthy 43% of sunny potential. As the year progresses, the likelihood of bright days fluctuates, peaking in the warmer months of July and August at 43% and 53%, respectively. By the time winter returns in December, the sunny days rise again to 49%, illustrating a seasonal cycle in San Siro that beckons brighter skies as spring approaches.

Percentage of Sunny Days in January in San Siro

The chart illustrates the percentage of sunny days in San Siro throughout the year, with January 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 San Siro experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec34%42%62%43%42%40%44%53%37%42%41%49%
Data source: San Siro January chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in San Siro in January

In San Siro, Italy, January ushers in roughly 9 hours of daylight, marking the beginning of a gradual increase as the year progresses. This uplifting trend continues into February, where daylight extends to 10 hours, and further blossoms in March with 11 hours of sunlight. By April, the days lengthen to an inviting 13 hours, as the promise of spring brightens the landscape. The crescendo of daylight reaches its peak in summer months, with both June and July basking in 15 hours of sun, before subtly retreating in August to 14 hours. As autumn arrives, daylight dwindles, descending to 12 hours in September and tapering back to 9 hours in November, before plunging to a mere 8 hours in December. This rhythm of light beautifully encapsulates the cyclical nature of seasons in this charming Italian locale.

Average Daylight Hours in San Siro for January

The chart illustrates the variation in daylight duration in San Siro throughout the year, with January highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 6m10h 21m11h 56m13h 33m14h 57m15h 39m15h 17m14h 3m12h 29m10h 52m9h 27m8h 42m
Data source: San Siro daylight hours, calculated by summing the hours between sunrise and sunset for each day.

January Winds in San Siro

In January, the winds in San Siro, Italy, start with an average speed of 1.6 m/s (4 mph), heralding a new year that feels refreshingly breezy. This marks the month with the highest wind speed in the early months, setting a tone that gradually calms in February with 1.2 m/s (3 mph). Throughout the spring, the winds maintain a consistent whisper at 1.4 m/s across March, April, and May, providing a gentle backdrop to the blooming landscape. As summer approaches, winds linger around 1.2 m/s to 1.4 m/s, offering mild relief from the growing warmth. Moving into autumn, the trend dips further, with September recording a gentle 1.1 m/s (2 mph), before rising slightly again in November and December. This yearly cadence showcases San Siro's transition from crisp winter winds to the light gusts of summer, weaving a tranquil yet dynamic atmosphere throughout the seasons.

Average January Wind Speed in San Siro

The chart displays monthly wind speed patterns in San Siro, with values for each month shown alongside January's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how January's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec1.6 m/s1.21.41.41.41.21.41.21.11.21.41.7
Data source: San Siro January wind data, generated using information from the Copernicus Climate Change Service.

How January Weather in San Siro Compares to Other Months

The weather in San Siro changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of January's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in San Siro and find detailed weather information for every month.

In January, temperatures range from a chilly minimum of -11°C (12°F) to a maximum of 12°C (53°F), with an average of around 1°C (35°F). The month sees about 48 mm (1.9 in) of precipitation, occurring on 7 days, alongside relatively high humidity at 88%. In contrast, February experiences slightly warmer conditions, with temperatures dipping to a minimum of -12°C (10°F) and reaching up to 18°C (65°F), averaging 3°C (39°F). This month also sees a bit more precipitation, totaling 52 mm (2.0 in) over 8 days, but humidity is lower at 81%. For more detailed weather information, you can view San Siro weather in February.

January weather features colder conditions, with temperatures ranging from a minimum of -11°C (12°F) to a maximum of 12°C (53°F) and an average of around 1°C (35°F). The month experiences high humidity at 88%, with precipitation totaling 48 mm (1.9 in) across 7 days. In contrast, March sees a noticeable warming trend, with temperatures ranging from -8°C (17°F) to a maximum of 20°C (68°F) and an average of 6°C (43°F). Precipitation increases significantly in March to 105 mm (4.1 in), occurring over 11 days, while humidity decreases to 76%. For more detailed information, visit San Siro weather in March.

In January, the weather is quite cold, with temperatures ranging from a frigid -11°C (12°F) at night to a mild maximum of 12°C (53°F) during the day. The month sees an average temperature of around 1°C (35°F) and experiences 48 mm (1.9 in) of precipitation over approximately 7 days, along with relatively high humidity at 88%.

In contrast, April brings a significant shift in weather, featuring milder temperatures, where lows are around -2°C (28°F) and highs soar to 23°C (74°F), resulting in an average of 10°C (50°F). This month also sees increased rainfall, totaling 162 mm (6.4 in) spread over about 13 days, although humidity decreases to 77%.

For more detailed insights on the weather during April, you can check San Siro weather in April.

January and May present strikingly different weather patterns. In January, temperatures range from a chilling minimum of -11°C (12°F) to a mild maximum of 12°C (53°F), with an average temperature around 1°C (35°F). The month experiences a high level of humidity at 88% and sees about 48 mm (1.9 in) of precipitation spread across 7 days.

In contrast, May offers a much warmer climate, with temperatures ranging from a minimum of 1°C (33°F) to a pleasant maximum of 26°C (80°F) and an average temperature of 14°C (57°F). The month is wetter, with a total precipitation of 202 mm (8.0 in) over 19 days, but the humidity is lower at 74%. For more details on the specific weather conditions, you can check San Siro weather in May.

The weather in January is characterized by cold temperatures, with minimums plunging to -11°C (12°F) and average highs reaching just 12°C (53°F). The month experiences about 48 mm (1.9 in) of precipitation over approximately 7 days, accompanied by high humidity at 88%. In stark contrast, June brings significantly warmer weather, with temperatures ranging from a minimum of 8°C (46°F) to a maximum of 33°C (92°F) and an average of 18°C (65°F). Rainfall is more frequent in June, totaling 219 mm (8.6 in) across 17 days, but the humidity drops to a more comfortable 71%. For a detailed overview of June weather, you can visit San Siro weather in June.

January and July present stark contrasts in weather patterns. In January, temperatures can drop as low as -11°C (12°F) and typically hover around an average of 1°C (35°F), with maximums reaching 12°C (53°F). The month sees around 48 mm (1.9 in) of precipitation spread over 7 days, accompanied by high humidity at 88%. In contrast, July offers a much warmer climate, with minimum temperatures around 10°C (50°F) and average highs of 20°C (68°F), peaking at 30°C (86°F). This summer month experiences significantly more rainfall, totaling 187 mm (7.4 in) over 17 days, but with lower humidity at 67%. For more details on July weather in this region, check out San Siro weather in July.

In comparing the weather between January and August, notable contrasts emerge. January sees much cooler temperatures, with lows plummeting to -11°C (12°F) and an average around 1°C (35°F), while August enjoys a much milder climate with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 30°C (86°F) and an average of 20°C (68°F). Precipitation also varies significantly; January has about 48 mm (1.9 in) over 7 days, whereas August experiences a substantial increase in rainfall, totaling 222 mm (8.7 in) across 17 days. Additionally, humidity levels are higher in January at 88% compared to a more comfortable 64% in August. For more details on August weather in the area, you can visit San Siro weather in August.

In January, temperatures are much colder, with averages hovering around 1°C (35°F) and a maximum reach of 12°C (53°F), while the minimum can drop as low as -11°C (12°F). The month sees some precipitation, totaling 48 mm (1.9 in) over about 7 days, accompanied by high humidity levels at 88%.

In contrast, September offers a more temperate climate, with average temperatures around 16°C (61°F) and highs peaking at 25°C (78°F). This month is also wetter, featuring 161 mm (6.3 in) of precipitation spread across 14 days, and the humidity is notably lower at 74%. For a detailed look at the weather in San Siro during September, check this link: San Siro weather in September.

In January, the weather is marked by significantly colder temperatures, ranging from a minimum of -11°C (12°F) to a maximum of 12°C (53°F), with an average of around 1°C (35°F). The month sees about 48 mm (1.9 in) of precipitation over 7 days, coupled with high humidity at 88%. In contrast, October offers much milder conditions, with temperatures varying from a minimum of 1°C (35°F) to a comfortable maximum of 23°C (73°F), and an average temperature of 11°C (53°F). However, October experiences heavier rainfall, accumulating 223 mm (8.8 in) over approximately 11 days, while the humidity remains slightly lower at 87%. For a detailed look at the weather in October, you can visit San Siro weather in October.

In January, temperatures experience a more pronounced chill, with a minimum of -11°C (12°F) and an average of just 1°C (35°F), while November is milder, featuring a minimum of -3°C (27°F) and an average of 7°C (44°F). Precipitation is also notably higher in November, totaling 177 mm (7.0 in) over 13 days of rain compared to January's 48 mm (1.9 in) spread across 7 days. Despite the similar humidity levels of 88% in both months, January's colder temperatures make for a much crisper and drier feeling day, whereas November tends to be wetter and more temperate. For a detailed look at November weather patterns, check out San Siro weather in November.

In comparison to December, January exhibits slightly colder temperatures, with a minimum of -11°C (12°F) and an average of 1°C (35°F), compared to December's minimum of -9°C (17°F) and average of 2°C (37°F). While January's maximum temperature reaches 12°C (53°F), December is marginally warmer with a maximum of 13°C (55°F). Precipitation is notably less in January, totaling 48 mm (1.9 in) over 7 days, compared to December's 108 mm (4.2 in) over 9 days, indicating a drier start to the year. Humidity levels remain relatively high in both months, with January at 88% and December at 85%. For a detailed look at December's weather specifics, you can visit San Siro weather in December.

Compare San Siro's Climate with Cities Worldwide

Conclusion: What to Expect From January Weather in San Siro

January in San Siro presents a stark contrast to the milder seasons, characterized by its chilly temperatures and notably high humidity. With maximums reaching just 12°C (53°F) and the average dipping to 1°C (35°F), this month often feels like a brisk interlude to the more temperate days ahead. Encounters with precipitation are frequent, as January typically sees about seven rainy days, accumulating approximately 48 mm. As the cold settles in, January serves as a reminder of winter's embrace, making it a unique chapter in San Siro's climate narrative. To explore more about the seasonal weather patterns, visit San Siro Climate.