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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 292 mm 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 292 mm 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 (°C) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Canberra | 30 | 28 | 25 | 21 | 17 | 13 | 13 | 14 | 17 | 21 | 24 | 27 |
| Siena | 9 | 11 | 15 | 19 | 23 | 28 | 31 | 32 | 26 | 20 | 14 | 10 |
| Difference | -20 | -17 | -10 | -2 | +7 | +15 | +19 | +18 | +8 | -1 | -11 | -17 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Canberra | 30 | 28 | 25 | 21 | 17 | 13 |
| Siena | 9 | 11 | 15 | 19 | 23 | 28 |
| Difference | -20 | -17 | -10 | -2 | +7 | +15 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Canberra | 13 | 14 | 17 | 21 | 24 | 27 |
| Siena | 31 | 32 | 26 | 20 | 14 | 10 |
| Difference | +19 | +18 | +8 | -1 | -11 | -17 |
Avg low (°C) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Canberra | 13 | 13 | 10 | 5 | 2 | 0 | -1 | -0 | 2 | 5 | 8 | 11 |
| Siena | 0 | 0 | 3 | 6 | 10 | 13 | 15 | 16 | 12 | 9 | 5 | 1 |
| Difference | -13 | -12 | -7 | — | +8 | +13 | +16 | +16 | +10 | +3 | -3 | -10 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Canberra | 13 | 13 | 10 | 5 | 2 | 0 |
| Siena | 0 | 0 | 3 | 6 | 10 | 13 |
| Difference | -13 | -12 | -7 | — | +8 | +13 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Canberra | -1 | -0 | 2 | 5 | 8 | 11 |
| Siena | 15 | 16 | 12 | 9 | 5 | 1 |
| Difference | +16 | +16 | +10 | +3 | -3 | -10 |
Precipitation (mm) Siena runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Canberra | 57 | 57 | 40 | 29 | 29 | 53 | 39 | 45 | 51 | 46 | 63 | 64 |
| Siena | 53 | 57 | 64 | 71 | 74 | 53 | 42 | 43 | 96 | 109 | 121 | 82 |
| Difference | -4 | — | +24 | +42 | +46 | — | +4 | -2 | +45 | +62 | +58 | +17 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Canberra | 57 | 57 | 40 | 29 | 29 | 53 |
| Siena | 53 | 57 | 64 | 71 | 74 | 53 |
| Difference | -4 | — | +24 | +42 | +46 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Canberra | 39 | 45 | 51 | 46 | 63 | 64 |
| Siena | 42 | 43 | 96 | 109 | 121 | 82 |
| Difference | +4 | -2 | +45 | +62 | +58 | +17 |
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