Siena weather by month

Check out Siena weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature in Siena (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
9°C maximum daytime temperature in January in Siena9
11°C maximum daytime temperature in February in Siena11
13°C maximum daytime temperature in March in Siena13
17°C maximum daytime temperature in April in Siena17
21°C maximum daytime temperature in May in Siena21
25°C maximum daytime temperature in June in Siena25
29°C maximum daytime temperature in July in Siena29
28°C maximum daytime temperature in August in Siena28
25°C maximum daytime temperature in September in Siena25
20°C maximum daytime temperature in October in Siena20
14°C maximum daytime temperature in November in Siena14
10°C maximum daytime temperature in December in Siena10
Min temperature (night-time)
2°C minimum night-time temperature in January in Siena2
3°C minimum night-time temperature in February in Siena3
4°C minimum night-time temperature in March in Siena4
7°C minimum night-time temperature in April in Siena7
11°C minimum night-time temperature in May in Siena11
14°C minimum night-time temperature in June in Siena14
17°C minimum night-time temperature in July in Siena17
17°C minimum night-time temperature in August in Siena17
14°C minimum night-time temperature in September in Siena14
11°C minimum night-time temperature in October in Siena11
6°C minimum night-time temperature in November in Siena6
3°C minimum night-time temperature in December in Siena3
Heat & Humidity
No heat & humidity in January in Siena0
No heat & humidity in February in Siena0
No heat & humidity in March in Siena0
No heat & humidity in April in Siena0
No heat & humidity in May in Siena0
Low heat & humidity in June in SienaL
Moderate heat & humidity in July in SienaM
Moderate heat & humidity in August in SienaM
No heat & humidity in September in Siena0
No heat & humidity in October in Siena0
No heat & humidity in November in Siena0
No heat & humidity in December in Siena0

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & Daylight in Siena

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
9 hours of daylight per day in January in Siena9
11 hours of daylight per day in February in Siena11
12 hours of daylight per day in March in Siena12
13 hours of daylight per day in April in Siena13
15 hours of daylight per day in May in Siena15
15 hours of daylight per day in June in Siena15
15 hours of daylight per day in July in Siena15
14 hours of daylight per day in August in Siena14
12 hours of daylight per day in September in Siena12
11 hours of daylight per day in October in Siena11
10 hours of daylight per day in November in Siena10
9 hours of daylight per day in December in Siena9
UV Index (Maximum)
UV (maximum) index 1 (Low) in January in Siena1
UV (maximum) index 2 (Low) in February in Siena2
UV (maximum) index 4 (Moderate) in March in Siena4
UV (maximum) index 5 (Moderate) in April in Siena5
UV (maximum) index 7 (High) in May in Siena7
UV (maximum) index 8 (Very High) in June in Siena8
UV (maximum) index 8 (Very High) in July in Siena8
UV (maximum) index 8 (Very High) in August in Siena8
UV (maximum) index 5 (Moderate) in September in Siena5
UV (maximum) index 4 (Moderate) in October in Siena4
UV (maximum) index 2 (Low) in November in Siena2
UV (maximum) index 1 (Low) in December in Siena1

Rainfall in Siena

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
13 days with some rainfall in January in Siena13
12 days with some rainfall in February in Siena12
13 days with some rainfall in March in Siena13
13 days with some rainfall in April in Siena13
12 days with some rainfall in May in Siena12
10 days with some rainfall in June in Siena10
6 days with some rainfall in July in Siena6
8 days with some rainfall in August in Siena8
9 days with some rainfall in September in Siena9
12 days with some rainfall in October in Siena12
14 days with some rainfall in November in Siena14
13 days with some rainfall in December in Siena13
Average monthly rainfall (mm)
65 mm monthly rainfall in January in Siena65
63 mm monthly rainfall in February in Siena63
60 mm monthly rainfall in March in Siena60
65 mm monthly rainfall in April in Siena65
58 mm monthly rainfall in May in Siena58
41 mm monthly rainfall in June in Siena41
30 mm monthly rainfall in July in Siena30
43 mm monthly rainfall in August in Siena43
69 mm monthly rainfall in September in Siena69
76 mm monthly rainfall in October in Siena76
103 mm monthly rainfall in November in Siena103
69 mm monthly rainfall in December in Siena69

More about Siena

Siena by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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The climate guide for Tuscany (Siena) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

What's the climate like in Siena?

Siena has a temperate climate with hot dry summers.

Metric (°C / mm)  |  Imperial (°F / inches)

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More about Tuscany

Compare Siena with the USA

Below the Siena chart shows average maximum daytime temperature for Siena, Tuscany, Italy and the USA (Washington).

Maximum daytime temperature (°C)

Siena, Tuscany, Italy
USA (Washington)
9
5
11
7
13
13
17
19
21
24
25
29
29
31
28
30
25
26
20
20
14
14
10
8
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C / mm)  |  Imperial (°F / inches)

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