Siena in august: average Weather, Temperature and Climate
Weather in Siena in august 2025
The weather in Siena in august comes from statistical datas on the last years. You can view the weather statistics for all the month, but also by using the tabs for the beginning, the middle and the end of the month.
Average weather throughout august
perfect weather UV index: 7
Weather at 6am
72°F
Clear/Sunny
74% of time
17%
6%
2%
Weather at 12pm
90°F
Clear/Sunny
71% of time
21%
5%
3%
Weather at 6pm
77°F
Clear/Sunny
75% of time
18%
6%
2%
Weather at 3am
65°F
63%
15%
15%
8%
Evolution of daily average temperature and precipitation in Siena in august
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Siena in august.
The climate of Siena in august is perfect
The climate in august in Siena is rather dry (with 1.5in of rainfall over 2 days). It should be noted an improvement from the previous month since in july it receives an average of 1.7in of precipitation over 3 days.
The climate quite good here august. The high seasonal norm is 90°F. The minimum is 72°F. Thus, the mean temperature average on this month of august in Siena is 81°F. These temperatures are far removed from those records observed in Siena in the month of august with a maximum record of 104°F in 2017 and a minimum record of 50°F in 2021. You can plan to have about 22 days with temperatures over 86°F, or 71 of the month.
Day length in Siena in august is 13:58. The sun rises at 05:20 and sets at 19:18.
With a perfect weather, the month of august is recommended to go there.
Seasonal average climate and temperature of Siena in august
Check below seasonal norms These statistics are compiled from the weather statements earlier years of the month of august.
| August | |||||
| Outside temperature | |||||
| Average temperature | 81°F | ||||
| Highest temperature | 90°F | ||||
| Lowest temperature | 72°F | ||||
| Highest record temperature | 104°F (2017) | ||||
| Lowest record temperature | 50°F (2021) | ||||
| Number of days at +86°F | 22 day(s) (71%) | ||||
| Number of days at +65°F | 31 day(s) (100%) | ||||
| Wind | |||||
| Wind speed | 14km/h | ||||
| Wind temperature | 72°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 1.5in | ||||
| Number of days with rainfall | 2 day(s) (7%) | ||||
| Record daily rainfall | 1.1in (2015) | ||||
| Other climate data | |||||
| Humidity | 72% | ||||
| Visibility | 9.52km | ||||
| Cloud cover | 13% | ||||
| UV index | 7 | ||||
| Daily sunshine hours | 14 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 05:20 | ||||
| Time of sunset | 19:18 | ||||
| Length of day | 13:58 | ||||
| Our opinion about the weather in august | |||||
| Our opinion at whereandwhen.net | perfect | ||||
How was the weather last august?
Here is the day by day recorded weather in Siena in august 2024:
70°F to 99°F
68°F to 99°F
68°F to 97°F
67°F to 95°F
70°F to 97°F
70°F to 95°F
68°F to 97°F
68°F to 97°F
70°F to 101°F
72°F to 103°F
74°F to 103°F
74°F to 103°F
72°F to 101°F
67°F to 99°F
68°F to 97°F
70°F to 94°F
68°F to 95°F
67°F to 81°F
63°F to 86°F
63°F to 83°F
65°F to 94°F
67°F to 95°F
68°F to 95°F
65°F to 95°F
63°F to 94°F
67°F to 97°F
65°F to 95°F
65°F to 92°F
67°F to 94°F
68°F to 95°F
68°F to 95°F
Map: other cities in Italy in august
Cities near Siena:
| San Gimignano in august | perfect weather |
| Chianciano Terme in august | perfect weather |
| Tuscany in august | perfect weather |
| Florence in august | perfect weather |
| Sarteano in august | perfect weather |
| Follonica in august | perfect weather |
| Grosseto in august | perfect weather |
| Piombino in august | perfect weather |
| Pitigliano in august | perfect weather |
| Livorno in august | perfect weather |
| Calamecca in august | perfect weather |
| Pisa in august | perfect weather |
Click over cities on the map for information about the weather in august.
Siena
perfect weather
good
tolerable
bad
very bad
Weather data for Siena in august:
Weather data for Siena for august are derived from an average of the weather forecast since 2009 in Siena. There is a margin of error and these forecasts are to be considered as general information only. The weather in Siena can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Siena.