April weather forecastSiena, Italy
April
Weather in April
April in Siena, Italy, presents an increase in temperature and rainfall, marking the arrival of spring in full bloom. With the complete dissipation of snow, the city flourishes under the mild warmth of the spring sun. Residents and tourists revel in the extended daylight hours of 13.4 hours per day, ushering in a period of outdoor festivities and cultural events. The month presents an excellent opportunity for visitors to explore the cityscape without the hindrance of snow or extreme heat. Despite a slight increase in rainfall of 29mm (1.14"), the weather remains largely sunny, paving the way for clear skies and picturesque sunsets.Temperature
As April sets, the average high-temperature shows a slight increase, moving up from a moderate 13.3°C (55.9°F) in March to a still refreshing 17.5°C (63.5°F). April's average low-temperature reading settles at a frosty 6.8°C (44.2°F).Humidity
In April, the average relative humidity is 76%.Rainfall
In Siena, in April, it is raining for 12.2 days, with typically 29mm (1.14") of accumulated precipitation. In Siena, Italy, during the entire year, the rain falls for 123.6 days and collects up to 363mm (14.29") of precipitation.Snowfall
April through November are months without snowfall.Daylight
The average length of the day in April in Siena is 13h and 26min.On the first day of the month, sunrise is at 06:55 and sunset at 19:41. On the last day of April, sunrise is at 06:08 and sunset at 20:15 CEST.
Sunshine
In April, the average sunshine is 9.9h.UV index
In Siena, the average daily maximum UV index in April is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In April, a daily UV index of 4 turns into the following recommendations:
Act with care - The suggestion to avoid sunburn is emphasized. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Siena, Italy
- Average high temperature in April: 17.5°C
The warmest month (with the highest average high temperature) is August (30.3°C).
The month with the lowest average high temperature is January (8.5°C).
- Average low temperature in April: 6.8°C
The month with the highest average low temperature is August (16.3°C).
The coldest month (with the lowest average low temperature) is January (1.9°C).
Average pressure in April
Siena, Italy
- Average pressure in April: 1014mbar
The month with the highest atmospheric pressure is December (1018.4mbar).
The month with the lowest atmospheric pressure is July (1013.5mbar).
Average wind speed in April
Siena, Italy
- Average wind speed in April: 8.7km/h
The windiest months (with the highest average wind speed) are February and March (10.8km/h).
The calmest month (with the lowest average wind speed) is June (7.1km/h).
Average humidity in April
Siena, Italy
- Average humidity in April: 76%
The month with the highest relative humidity is November (85%).
The month with the lowest relative humidity is August (63%).
Average rainfall in April
Siena, Italy
- Average rainfall in April: 29mm
The wettest month (with the highest rainfall) is November (50mm).
The driest month (with the least rainfall) is August (14mm).
Average rainfall days in April
Siena, Italy
- Average rainfall days in April: 12.2 days
The month with the highest number of rainy days is May (13.5 days).
The month with the least rainy days is August (5.8 days).
Average snowfall in April
Siena, Italy
- Average snowfall in April: 0mm
The month with the highest snowfall is February (20mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in April
Siena, Italy
- Average snowfall days in April: 0 days
The month with the highest number of snowfall days is February (1.4 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in April /
Average sunshine in April
Siena, Italy
- Average daylight in April: 13h and 24min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in April: 9h and 54min
The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).
Average sunshine days in April
Siena, Italy
- Average sunshine days in April: 16.4 days
The month with the most sunshine days is August (23.9 days).
The month with the least sunshine days is February (14.6 days).
Average UV index in April
Siena, Italy
- Average UV index in April: 4
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in April
Siena, Italy
- Average cloud cover in April: 34
The months with the most cloud cover are January, February and November (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in April
Siena, Italy
- Average visibility in April: 9km
The months with the highest visibility are February, March, April, May, June, July, August, September and December (9km).
The months with the lowest visibility are January, October and November (8km).
