The best times to visit San Siro for ideal weather are

April 30th to October 14th

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.



Other San Siro Travel Info

Weather in San Siro


Average temperatures in San Siro vary greatly. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a fair chance of precipitation about half of the year. The area is less temperate than some — in the 36th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit San Siro, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally mid July where highs are regularly around 86.1°F (30.1°C) with temperatures rarely dropping below 62.3°F (16.8°C) at night.

San Siro Temperatures (Fahrenheit)


San Siro Temperatures (Celsius)


“Feels-Like” Temperatures

The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.

San Siro Perceived Temperature (F)


San Siro Perceived Temperature (C)



Average San Siro Temperatures by Month

Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 44 35.4 30
Feb 45.4 36.3 30
Mar 55.9 44.6 36.1
Apr 65.5 53.5 42.7
May 69 57.5 47.5
Jun 78.3 65.4 55.4
Jul 83 70.1 59.9
Aug 79.2 67.3 58.6
Sep 71.9 59.9 51.7
Oct 62.5 53.5 47.5
Nov 53.6 44.2 38.3
Dec 44.8 35.4 30

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 6.7 1.9 -1.1
Feb 7.4 2.4 -1.1
Mar 13.3 7 2.3
Apr 18.6 11.9 5.9
May 20.6 14.2 8.6
Jun 25.7 18.6 13
Jul 28.3 21.2 15.5
Aug 26.2 19.6 14.8
Sep 22.2 15.5 10.9
Oct 16.9 11.9 8.6
Nov 12 6.8 3.5
Dec 7.1 1.9 -1.1



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in San Siro are December, January, and then July. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early December. For example, on the week of December 3rd there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in early to mid October with an average of 4 days of significant precipitation the week of October 8th.

When can you find snow in San Siro? Weather stations report a bit of annual snow likely to be deepest around December, especially close to early to mid December. The best time to ski (if at all) in San Siro is often around around December 10th when fresh powder is deepest. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.

Chance of Precipitation

The graph below shows the % chance of rainy and snowy days in San Siro.

Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in San Siro (in).

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 20% 0 4.2
Feb 24% 0 4
Mar 24% 0 2.7
Apr 24% 0 4.8
May 31% 0 7.2
Jun 27% 0 4.3
Jul 23% 0 5
Aug 27% 0 5.4
Sep 28% 0 3.8
Oct 26% 0 5.7
Nov 26% 0 6.2
Dec 12% 1.6 2.6

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 20 0 10.7
Feb 24 0 10.2
Mar 24 0 6.9
Apr 24 0 12.2
May 31 0 18.3
Jun 27 0 10.9
Jul 23 0 12.7
Aug 27 0 13.7
Sep 28 0 9.7
Oct 26 0 14.5
Nov 26 0 15.7
Dec 12 4.1 6.6


Humidity and Wind

San Siro has some extremely humid months, with other comfortably humid months. The least humid month is April (56.6% relative humidity), and the most humid month is October (85.5%).

Wind in San Siro is usually extremely calm. The windiest month is April, followed by March and June. April’s average wind speed of around 3.6 knots (4.1 MPH or 6.6 KPH) is considered “light air.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early to mid April where average top sustained speeds reach 10.5 knots, which is considered a gentle breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in San Siro.

Avg. Relative Humidity


The graph below shows wind speed (max and average) in knots.

Max Sustained Wind
Average Daily Wind

Average Wind Speeds

Show Wind Speeds

All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

Month Avg. Wind Avg. Wind Feel Sustained High Wind High Wind Feel
Jan 2.5 Barely noticeable 6.6 Light breeze
Feb 2.6 Barely noticeable 6.2 Light breeze
Mar 3.3 Barely noticeable 8.2 Light breeze
Apr 3.6 Barely noticeable 9.4 Gentle breeze
May 3.2 Barely noticeable 9 Light breeze
Jun 3.2 Barely noticeable 8.7 Gentle breeze
Jul 3 Barely noticeable 7.8 Light breeze
Aug 3 Barely noticeable 7.5 Gentle breeze
Sep 2.6 Barely noticeable 6.9 Light breeze
Oct 2.1 Barely noticeable 5.6 Light breeze
Nov 2.3 Barely noticeable 5.4 Light breeze
Dec 2.4 Barely noticeable 6 Light breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 74.5%
Feb 70.9%
Mar 62.3%
Apr 56.6%
May 66.5%
Jun 67%
Jul 69.3%
Aug 73.4%
Sep 75.8%
Oct 85.5%
Nov 80.2%
Dec 78%


Is it Safe to Travel to San Siro?

Our best data indicates this area is generally safe. As of Dec 04, 2023 there are no travel advisories or warnings for Italy; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Nov 22, 2023.


The Busiest and Least Crowded Months

The busiest month for tourism in San Siro, Italy is May, followed by June and March. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit San Siro in December. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month


Most Popular Months to Visit

Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is somewhat extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 58.3 in December means 58.3% of the tourists vs. May.



Overall San Siro Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 73.2°F (22.9°C) and 50.8°F (10.4°C) with warmer temperatures in the later months. Rain is somewhat common with 7 to 10 days of significant precipitation per month. Spring is the busiest for tourism, which makes it a good time for those looking for things to do.

Summer (June through August)

The middle-year months have very comfortable weather with high temperatures that are comfortable. These months see moderate precipitation with 7 to 8 days of precipitation per month. June – August is the second busiest season for tourism in San Siro, so lodging and other accommodations may cost slightly more.

Fall (September through November)

Fall daily highs range from 76.3°F (24.6°C) and 47.7°F (8.7°C), which will feel chilly given the humidity and wind. It rains or snows a significant amount: approximately 8 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.

Winter (December through February)

Weather is too cold this time of year in San Siro to be enjoyable for warm weather travelers. The average high during this season is between 50.8°F (10.4°C) and 39.7°F (4.3°C). On average, it rains or snows a fair amount: 4 to 7 times per month. These times of year are fairly slow with tourists.


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