August weather forecastSiena, Italy
August
Weather in August
The month of August represents the climax of the Siena summer, Italy, maintaining the heat of July but with slightly more humid conditions. The weather, swaying between balmy and hot, ushers in a festive summer spirit, making historic city exploration an absolute delight. August presents an average high temperature of 30.3°C (86.5°F), the peak value for the year. Although rainfall increases slightly to 14mm (0.55"), it hardly dampens the prevailing summer spirit. The Mediterranean winds provide a gentle reprieve from the relatively high temperatures, making boating excursions a popular pastime.Temperature
Temperature readings reach their annual highs in August, averaging 30.3°C (86.5°F) and a minimum average of 16.3°C (61.3°F).Heat index
August's heat index is calculated to be a hot 34°C (93.2°F). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.The metrics for the heat index are tailored for both shady environments and light winds. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'feels like' or 'apparent temperature', comes about by integrating the temperature readings with the humidity levels. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
Humidity
The least humid month in Siena is August, with an average relative humidity of 63%.Rainfall
August is the month with the least rainfall. Rain falls for 5.8 days and accumulates 14mm (0.55") of precipitation.Snowfall
In Siena, Italy, snow does not fall in April through November.Daylight
The average length of the day in August is 13h and 55min.On the first day of the month, sunrise is at 06:05 and sunset at 20:36. On the last day of August, in Siena, sunrise is at 06:38 and sunset at 19:51 CEST.
Sunshine
July and August, with an average of 11.9h of sunshine, are months with the most sunshine in Siena.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index in Siena. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 6 in August converts into the following recommendations:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Siena, Italy
- Average high temperature in August: 30.3°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 August: 16.3°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 August
Siena, Italy
- Average pressure in August: 1014.3mbar
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 August
Siena, Italy
- Average wind speed in August: 7.2km/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 August
Siena, Italy
- Average humidity in August: 63%
The month with the highest relative humidity is November (85%).
The month with the lowest relative humidity is August (63%).
Average rainfall in August
Siena, Italy
- Average rainfall in August: 14mm
The wettest month (with the highest rainfall) is November (50mm).
The driest month (with the least rainfall) is August (14mm).
Average rainfall days in August
Siena, Italy
- Average rainfall days in August: 5.8 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 August
Siena, Italy
- Average snowfall in August: 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 August
Siena, Italy
- Average snowfall days in August: 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 August /
Average sunshine in August
Siena, Italy
- Average daylight in August: 13h and 54min
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 August: 11h 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 August
Siena, Italy
- Average sunshine days in August: 23.9 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 August
Siena, Italy
- Average UV index in August: 6
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 August
Siena, Italy
- Average cloud cover in August: 13
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 August
Siena, Italy
- Average visibility in August: 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).
