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Canberra vs Siena
Comparing Canberra change · Siena change
Canberra and Siena have nearly identical year-round temperatures; Siena is the wetter, with 12 in more rain a year.
How the seasons compare
The differences between Canberra and Siena, in everyday terms.
Summers
Siena has hotter summers
Canberra: Warm
Siena: Hot
Winters
Winters are similar
Canberra: Cold
Siena: Chilly
Rain & snow
Siena is wetter
Canberra: Moderate rainfall
Siena: Moderate rainfall
Sky
Similar amounts of sun
Canberra: Partly cloudy
Siena: Partly cloudy
Month-by-month charts
Temperature
Canberra and Siena run remarkably close all year.
Precipitation
Siena is the wetter — about 12 in more across the year.
Clear skies
The two cities see a similar amount of sun.
Exact monthly numbers
Tap a metric to open its full table. Desktop shows all twelve months; on a phone each metric splits into Jan–Jun and Jul–Dec.
Avg high (°F) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Canberra | 85 | 82 | 77 | 70 | 62 | 56 | 55 | 57 | 63 | 70 | 76 | 81 |
| Siena | 49 | 52 | 59 | 66 | 74 | 82 | 89 | 89 | 78 | 68 | 57 | 50 |
| Difference | -36 | -30 | -18 | -4 | +12 | +27 | +34 | +32 | +15 | -2 | -19 | -31 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Canberra | 85 | 82 | 77 | 70 | 62 | 56 |
| Siena | 49 | 52 | 59 | 66 | 74 | 82 |
| Difference | -36 | -30 | -18 | -4 | +12 | +27 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Canberra | 55 | 57 | 63 | 70 | 76 | 81 |
| Siena | 89 | 89 | 78 | 68 | 57 | 50 |
| Difference | +34 | +32 | +15 | -2 | -19 | -31 |
Avg low (°F) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Canberra | 56 | 55 | 50 | 42 | 35 | 33 | 30 | 31 | 36 | 41 | 47 | 52 |
| Siena | 33 | 33 | 37 | 42 | 49 | 56 | 60 | 60 | 53 | 47 | 41 | 34 |
| Difference | -23 | -22 | -12 | — | +14 | +23 | +29 | +28 | +17 | +6 | -6 | -18 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Canberra | 56 | 55 | 50 | 42 | 35 | 33 |
| Siena | 33 | 33 | 37 | 42 | 49 | 56 |
| Difference | -23 | -22 | -12 | — | +14 | +23 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Canberra | 30 | 31 | 36 | 41 | 47 | 52 |
| Siena | 60 | 60 | 53 | 47 | 41 | 34 |
| Difference | +29 | +28 | +17 | +6 | -6 | -18 |
Precipitation (in) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Canberra | 2.2 | 2.3 | 1.6 | 1.1 | 1.1 | 2.1 | 1.5 | 1.8 | 2 | 1.8 | 2.5 | 2.5 |
| Siena | 2.1 | 2.2 | 2.5 | 2.8 | 2.9 | 2.1 | 1.7 | 1.7 | 3.8 | 4.3 | 4.8 | 3.2 |
| Difference | -0.2 | — | +0.9 | +1.7 | +1.8 | — | +0.1 | -0.1 | +1.8 | +2.5 | +2.3 | +0.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Canberra | 2.2 | 2.3 | 1.6 | 1.1 | 1.1 | 2.1 |
| Siena | 2.1 | 2.2 | 2.5 | 2.8 | 2.9 | 2.1 |
| Difference | -0.2 | — | +0.9 | +1.7 | +1.8 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Canberra | 1.5 | 1.8 | 2 | 1.8 | 2.5 | 2.5 |
| Siena | 1.7 | 1.7 | 3.8 | 4.3 | 4.8 | 3.2 |
| Difference | +0.1 | -0.1 | +1.8 | +2.5 | +2.3 | +0.7 |
Cloud cover (%) Siena runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Canberra | 57 | 59 | 53 | 48 | 46 | 50 | 44 | 44 | 48 | 54 | 59 | 58 |
| Siena | 65 | 61 | 62 | 65 | 62 | 50 | 36 | 39 | 53 | 62 | 69 | 65 |
| Difference | +8 | +2 | +8 | +16 | +16 | — | -8 | -5 | +5 | +8 | +10 | +7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Canberra | 57 | 59 | 53 | 48 | 46 | 50 |
| Siena | 65 | 61 | 62 | 65 | 62 | 50 |
| Difference | +8 | +2 | +8 | +16 | +16 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Canberra | 44 | 44 | 48 | 54 | 59 | 58 |
| Siena | 36 | 39 | 53 | 62 | 69 | 65 |
| Difference | -8 | -5 | +5 | +8 | +10 | +7 |
Relative humidity (%) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Canberra | 62 | 67 | 69 | 72 | 78 | 85 | 83 | 79 | 74 | 69 | 67 | 63 |
| Siena | 91 | 86 | 82 | 78 | 73 | 63 | 54 | 55 | 68 | 80 | 89 | 91 |
| Difference | +29 | +20 | +13 | +6 | -5 | -22 | -30 | -24 | -6 | +11 | +22 | +28 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Canberra | 62 | 67 | 69 | 72 | 78 | 85 |
| Siena | 91 | 86 | 82 | 78 | 73 | 63 |
| Difference | +29 | +20 | +13 | +6 | -5 | -22 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Canberra | 83 | 79 | 74 | 69 | 67 | 63 |
| Siena | 54 | 55 | 68 | 80 | 89 | 91 |
| Difference | -30 | -24 | -6 | +11 | +22 | +28 |
How both climates are changing
Both cities are warming. Each city has its own warming trend; see its trends page for the year-by-year detail. Canberra trends → · Siena trends →
Methodology & sources
Canberra
Temperature & precipitation — 1991–2020 normals computed from 25 years of daily observations at Canberra Forestry, a weather station, about 3 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.
Siena
Temperature & precipitation — the official 1991–2020 climate normals from the WMO's CLINO 1991–2020 collection, measured at Arezzo, about 45 km from the city centre.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.
← change Canberra · change Siena → · Canberra page · Siena page