Measurements:
°C
°F
Siena
82°F
SE 4 mph
Feels like: 84°F
Precip: 1%
World Resorts Italy Siena Weather August Weather in Siena

Siena Weather: August

Average Day Temperature: 93.4°F
Average Night Temperature: 66.3°F
Number of Sunny Days: 26 days
Sunshine Hours: 13.2 - 14.5 hours
Number of Rainy Days: 2 days
Precipitation Totals: 1.0 in

Air Temperature in August, °F

Select Year: 2026 2025 2024

The highest day temperature in August 2026 was 106°F. The lowest night temperature was 42°F. The average values for day and night temperatures during August were 98.4°F и 69.4°F respectivly.

Sunny, Cloudy and Gloomy days

Most of the days in August are sunny but you can also expect cloudy and gloomy days.

Precipitation Totals in August, in

Precipitation total in August for Siena is 1.0 in. It makes august one of the least rainy months of the year.

Wind Speed in August, mph

The average wind speed in August is 5.3 mph. This value is relatively stable throughout the year.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Siena in August is 11.8 hours.

Best Time to Visit Siena
The most sunny months:
July 27 days
August 26 days
June 23 days
The most warm months:
August 93.4 °F
July 93.1 °F
June 85.1 °F
The most cold months:
January 47.4 °F
December 49.5 °F
February 50.9 °F
The most rainy months:
May 5 days
March 4 days
November 4 days
The most windy months:
March 6 mph
February 6 mph
April 6 mph

Siena on the Weather Map

Italy Resorts:
NAME
Amalfi +82
Baia Domizia +88
Bari +78
Bibione +78
Florence +82
Genoa +76
Lido di Jesolo +78
Naples +78
Palermo +82
Rimini +84
Rome +88
Scalea +72
Sicily +80
Tropea +78
Venice +78
24 Hours Weather Forecast
Siena
Local time: 12:40
16 sep, wednesday
1500 88°F
SE
7 mph
1800 80°F
E
9 mph
2100 70°F
E
2 mph
17 sep, thursday
0000 68°F
N
2 mph
0300 66°F
N
3 mph
0600 66°F
NW
3 mph
0900 66°F
NW
5 mph
1200 80°F
N
12 mph