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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Climate and monthly weather forecast
Weather in January
January, like December, in Siano, Italy, is a cool winter month, with temperature in the range of an average high of 11.7°C (53.1°F) and an average low of 6.8°C (44.2°F). January, known for its average high temperature of 11.7°C (53.1°F) and an average low temperature of 6.8°C (44.2°F), is the coldest month. Weather in January »
Weather in February
February, the last month of the winter in Siano, is also a fresh month, with an average temperature ranging between max 12.1°C (53.8°F) and min 6.8°C (44.2°F). The arrival of February denotes a barely perceptible change in the average high-temperatures to a still fresh 12.1°C (53.8°F) from January's 11.7°C (53.1°F). Weather in February »
Weather in March
March, the first month of the spring in Siano, is a refreshing month, with temperature in the range of an average low of 8.3°C (46.9°F) and an average high of 14.4°C (57.9°F). The advent of March brings an average high-temperature of a refreshing 14.4°C (57.9°F), almost identical to the preceding month. Weather in March »
Weather in April
April is a refreshing spring month in Siano, Italy, with an average temperature fluctuating between 17.9°C (64.2°F) and 10.9°C (51.6°F). Siano's April weather indicates a minor increase in high-temperatures, edging from March's mild 14.4°C (57.9°F) to an enjoyable 17.9°C (64.2°F). Weather in April »
Weather in May
May, the last month of the spring in Siano, is a pleasant month, with temperature in the range of an average high of 21.3°C (70.3°F) and an average low of 13.6°C (56.5°F). May showcases a minor temperature ascent, adjusting from April's refreshing 17.9°C (64.2°F) to an agreeable 21.3°C (70.3°F). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Siano, Italy, with temperature in the range of an average high of 25.8°C (78.4°F) and an average low of 17.6°C (63.7°F). The commencement of June sees a minor shift in the average high-temperature, moving from an agreeable 21.3°C (70.3°F) in May to a moderately hot 25.8°C (78.4°F). Weather in June »
Weather in July
July, like June, in Siano, Italy, is another warm summer month, with an average temperature varying between 29.1°C (84.4°F) and 20.5°C (68.9°F). July introduces a marginal temperature uplift, with average high-temperatures adjusting from June's warm 25.8°C (78.4°F) to a still moderately hot 29.1°C (84.4°F). Weather in July »
Weather in August
August, the last month of the summer in Siano, is a tropical month, with an average temperature ranging between min 21.6°C (70.9°F) and max 30.2°C (86.4°F). August, recognised by an average high temperature of 30.2°C (86.4°F) and a low of 21.6°C (70.9°F), is Siano's warmest month. For August, the heat index is appraised at a hot 33°C (91.4°F). Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Siano, Italy, with an average temperature fluctuating between 25.5°C (77.9°F) and 18.6°C (65.5°F). With the onset of September, the average high-temperature subtly recedes from August's hot 30.2°C (86.4°F) to a warm 25.5°C (77.9°F). Weather in September »
Weather in October
October, like September, is an agreeable autumn month in Siano, Italy, with an average temperature fluctuating between 21.7°C (71.1°F) and 15.4°C (59.7°F). The start of October comes with a small reduction in the average high-temperature, subtly receding from a warm 25.5°C (77.9°F) in September to a pleasant 21.7°C (71.1°F). Weather in October »
Weather in November
November, the last month of the autumn in Siano, is another comfortable month, with an average temperature varying between 11.9°C (53.4°F) and 16.9°C (62.4°F). The start of November involves a subtle temperature drop, shifting from an agreeable 21.7°C (71.1°F) in October to an enjoyable 16.9°C (62.4°F). Weather in November »
Weather in December
The first month of the winter, December, is still a refreshing month in Siano, Italy, with an average temperature ranging between min 8°C (46.4°F) and max 13°C (55.4°F). With the onset of December, the average high-temperature subtly recedes from November's comfortable 16.9°C (62.4°F) to a mild 13°C (55.4°F). Weather in December »
Updated: Aug 11, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year?
January, noted for its average high-temperature of 11.7°C (53.1°F) and an average low-temperature of 6.8°C (44.2°F), is considered the coldest month.
What are the most humid months in Siano?
The months with the highest humidity are January and November, with an average relative humidity of 75%.
How many days does it rain?
In Siano, during the entire year, the rain falls for 149.6 days and collects up to 614mm (24.17") of precipitation.
When does it snow?
Months with snowfall in Siano are January and February.
When does it snow the most?
The months with the most snowfall are January and February, with an average 3mm (0.12") of accumulated snow.
How much does it snow in Siano?
In Siano, Italy, during the entire year, snow falls for 1.4 days and aggregates up to 6mm (0.24") of snow.
What is the month with the least sunshine in Siano?
The month with the least sunshine is January, with an average of 5.6h of sunshine.
What are the months with the lowest UV index?
January, February and December, with an average maximum UV index of 3, are months with the lowest UV index.
When it does not snow?
March through December are months without snowfall.
When are the longest days in Siano?
With an average of 15h and 6min of daylight, June has the longest days of the year.
What is the month with the most sunshine?
July and August, with an average of 12h of sunshine, are months with the most sunshine.
When is the highest UV index?
July and August, with an average maximum UV index of 7, are months with the highest UV index.
What is the hottest time of year in Siano?
August, recording an average high temperature of 30.2°C (86.4°F) and a low temperature of 21.6°C (70.9°F), is Siano's warmest month.
What is the least humid month?
August is the least humid month, with an average relative humidity of 61%.
What is the driest month?
The month with the least rainfall is August, when the rain falls for 6.3 days and typically collects 11mm (0.43") of precipitation.
When is Daylight Saving Time (DST)?
On Sunday, 27. October 2024, at 03:00, Daylight Saving Time ends, and the time zone changes from CEST to CET. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 02:00, and the time zone reverts from CET to CEST.
What is the rainiest month?
The month with the most rainfall in Siano is November, when the rain falls for 14.6 days and typically aggregates up to 122mm (4.8") of precipitation.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 18min of daylight.
Average temperature
Siano, Italy
The warmest month (with the highest average high temperature) is August (30.2°C).
The month with the lowest average high temperature is January (11.7°C).
The month with the highest average low temperature is August (21.6°C).
The coldest months (with the lowest average low temperature) are January and February (6.8°C).
Average pressure
Siano, Italy
- Average pressure in January:
1016.1mbar - Average pressure in February:
1014.3mbar - Average pressure in March:
1014.4mbar - Average pressure in April:
1014mbar - Average pressure in May:
1014.1mbar - Average pressure in June:
1014.2mbar
- Average pressure in July:
1013.9mbar - Average pressure in August:
1014.5mbar - Average pressure in September:
1015.5mbar - Average pressure in October:
1016.3mbar - Average pressure in November:
1014.9mbar - Average pressure in December:
1018.4mbar
The month with the highest atmospheric pressure is December (1018.4mbar).
The month with the lowest atmospheric pressure is July (1013.9mbar).
Average wind speed
Siano, Italy
- Average wind speed in January:
12.7km/h - Average wind speed in February:
13.1km/h - Average wind speed in March:
12.4km/h - Average wind speed in April:
10km/h - Average wind speed in May:
9.3km/h - Average wind speed in June:
8.3km/h
- Average wind speed in July:
8.1km/h - Average wind speed in August:
7.7km/h - Average wind speed in September:
9.3km/h - Average wind speed in October:
9.9km/h - Average wind speed in November:
11.4km/h - Average wind speed in December:
11.9km/h
The windiest month (with the highest average wind speed) is February (13.1km/h).
The calmest month (with the lowest average wind speed) is August (7.7km/h).
Average humidity
Siano, Italy
The months with the highest relative humidity are January and November (75%).
The month with the lowest relative humidity is August (61%).
Average rainfall
Siano, Italy
The wettest month (with the highest rainfall) is November (122mm).
The driest month (with the least rainfall) is August (11mm).
Average rainfall days
Siano, Italy
- Average rainfall days in January:
15.6 days - Average rainfall days in February:
14.9 days - Average rainfall days in March:
15.1 days - Average rainfall days in April:
13.9 days - Average rainfall days in May:
14.3 days - Average rainfall days in June:
9.5 days
- Average rainfall days in July:
6.5 days - Average rainfall days in August:
6.3 days - Average rainfall days in September:
12.5 days - Average rainfall days in October:
13.1 days - Average rainfall days in November:
14.6 days - Average rainfall days in December:
13.3 days
The month with the highest number of rainy days is January (15.6 days).
The month with the least rainy days is August (6.3 days).
Average snowfall
Siano, Italy
The months with the highest snowfall are January and February (3mm).
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days
Siano, Italy
- Average snowfall days in January:
0.6 days - Average snowfall days in February:
0.4 days - Average snowfall days in March:
0.1 days - Average snowfall days in April:
0 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0 days - Average snowfall days in December:
0.3 days
The month with the highest number of snowfall days is January (0.6 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight / Average sunshine
Siano, Italy
- Average daylight in January:
9h and 4min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 3min - Average daylight in June:
15h and 1min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
5h and 4min - Average sunshine in February:
5h and 5min - Average sunshine in March:
8h and 1min - Average sunshine in April:
10h and 2min - Average sunshine in May:
10h and 5min - Average sunshine in June:
11h and 5min
- Average sunshine in July:
12h and 0min - Average sunshine in August:
12h and 0min - Average sunshine in September:
10h and 5min - Average sunshine in October:
7h and 0min - Average sunshine in November:
6h and 0min - Average sunshine in December:
6h and 1min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).
Average sunshine days
Siano, Italy
- Average sunshine days in January:
12.4 days - Average sunshine days in February:
10.8 days - Average sunshine days in March:
13.8 days - Average sunshine days in April:
13.8 days - Average sunshine days in May:
13.7 days - Average sunshine days in June:
17.3 days
- Average sunshine days in July:
22.4 days - Average sunshine days in August:
21.3 days - Average sunshine days in September:
14.4 days - Average sunshine days in October:
15.7 days - Average sunshine days in November:
13.5 days - Average sunshine days in December:
15.3 days
The month with the most sunshine days is July (22.4 days).
The month with the least sunshine days is February (10.8 days).
Average UV index
Siano, Italy
The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover
Siano, Italy
The month with the most cloud cover is January (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 10).
Average visibility
Siano, Italy
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
