Siena weather in July
In July, Siena sees average daytime highs of 29°C and overnight lows near 17°C, with 31 mm of rain across 5 wet days and about 14.9 hours of daylight. It is the 2nd-warmest and 12th-wettest month of the year here.
Highs climb over the month, from about 28°C in the first days to 30°C by the end. The sky is clear or mostly clear about 74% of the time in July, and the air most often feels humid.
Daylight stretches from about 15 h 12 min at the start of July to 14 h 24 min by month's end. Set against the rest of the year, July is Siena's 1st-clearest and 10th-windiest month. For the whole year in context, see Siena's year-round climate.
- Daytime high
- 29°
- 2nd warmest
- Overnight low
- 17°
- 11th coldest
- Rainfall
- 31 mm
- 5 wet days
- Daylight
- 14 h 54 min
- 4:53 AM – 7:48 PM
- Cloud cover
- 27%
- 1st clearest
- Wind
- 7 km/h
- 10th windiest
- Solar energy
- 6.97 kWh/m²
- Travel score
- 6.5
- out of 10
- Air quality
- Good
- PM10 18.4 µg/m³ · 2019
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in July
Highs climb over the month, from about 28°C in the first days to 30°C by the end.
A typical July day in Siena reaches about 29°C in the afternoon and slips back to 17°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 33°C. Set against its neighbours, July runs about 3°C warmer than June and on par with August.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 |
| Avg low (°C) | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 28 | 17 |
| 2 | 28 | 17 |
| 3 | 28 | 17 |
| 4 | 28 | 17 |
| 5 | 28 | 17 |
| 6 | 29 | 17 |
| 7 | 29 | 17 |
| 8 | 29 | 17 |
| 9 | 29 | 17 |
| 10 | 29 | 17 |
| 11 | 29 | 17 |
| 12 | 29 | 17 |
| 13 | 29 | 17 |
| 14 | 29 | 17 |
| 15 | 29 | 17 |
| 16 | 29 | 17 |
| 17 | 29 | 17 |
| 18 | 29 | 18 |
| 19 | 29 | 18 |
| 20 | 29 | 18 |
| 21 | 30 | 18 |
| 22 | 30 | 18 |
| 23 | 30 | 18 |
| 24 | 30 | 18 |
| 25 | 30 | 18 |
| 26 | 30 | 18 |
| 27 | 30 | 18 |
| 28 | 30 | 18 |
| 29 | 30 | 18 |
| 30 | 30 | 18 |
| 31 | 30 | 18 |
How July really feels in Siena
Once humidity and wind are folded in, July averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
July sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Siena weather by month
How July compares with the rest of the year at a glance. July is the 2nd-warmest and 12th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 9° / 2° | 55 | 8.1 | 0.8 | 9.2 | 1.9 |
| Feb | 10° / 2° | 65 | 8.4 | 1.2 | 10.2 | 2.5 |
| Mar | 14° / 4° | 66 | 9 | 0.5 | 11.6 | 4.2 |
| Apr | 17° / 7° | 79 | 11.3 | 0 | 13.2 | 5.4 |
| May | 22° / 11° | 71 | 10.1 | 0 | 14.5 | 6.7 |
| Jun | 26° / 15° | 50 | 7.5 | 0 | 15.1 | 7.4 |
| Jul | 29° / 17° | 31 | 5 | 0 | 14.9 | 6.5 |
| Aug | 29° / 18° | 40 | 6.2 | 0 | 13.8 | 6.3 |
| Sep | 25° / 14° | 92 | 9 | 0 | 12.3 | 7.1 |
| Oct | 19° / 10° | 109 | 10.4 | 0 | 10.8 | 6.2 |
| Nov | 14° / 6° | 120 | 11.6 | 0.1 | 9.5 | 3.8 |
| Dec | 10° / 3° | 79 | 10 | 0.5 | 8.8 | 2.1 |
Cloud cover in July
The sky is clear or mostly clear about 74% of the time in July, the clearest month of the year.
Beyond those clear spells, partly cloudy skies cover about 13% of July, with mostly cloudy or overcast conditions the remaining 13%.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 87 | 87 | 87 | 87 | 87 | 87 | 86 | 87 | 87 | 87 | 87 | 87 | 87 | 87 | 87 | 88 | 88 | 88 | 88 | 88 | 88 | 88 | 88 | 88 | 88 | 88 | 87 | 87 | 87 | 86 | 86 |
| Cloudier (%) | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 14 | 14 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 87 | 13 |
| 2 | 87 | 13 |
| 3 | 87 | 13 |
| 4 | 87 | 13 |
| 5 | 87 | 13 |
| 6 | 87 | 13 |
| 7 | 86 | 14 |
| 8 | 87 | 13 |
| 9 | 87 | 13 |
| 10 | 87 | 13 |
| 11 | 87 | 13 |
| 12 | 87 | 13 |
| 13 | 87 | 13 |
| 14 | 87 | 13 |
| 15 | 87 | 13 |
| 16 | 88 | 12 |
| 17 | 88 | 12 |
| 18 | 88 | 12 |
| 19 | 88 | 12 |
| 20 | 88 | 12 |
| 21 | 88 | 12 |
| 22 | 88 | 12 |
| 23 | 88 | 12 |
| 24 | 88 | 12 |
| 25 | 88 | 12 |
| 26 | 88 | 12 |
| 27 | 87 | 13 |
| 28 | 87 | 13 |
| 29 | 87 | 13 |
| 30 | 86 | 14 |
| 31 | 86 | 14 |
Chance of precipitation in July
Siena gets around 31 mm of rain over 5 wet days in July, the driest month. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 16% and peaks near 18% on the wettest days.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 17 | 17 | 17 | 18 | 18 | 18 | 18 | 18 | 18 | 17 | 17 | 17 | 17 | 16 | 16 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 16 |
| Rain chance (%) | |
|---|---|
| 1 | 17 |
| 2 | 17 |
| 3 | 17 |
| 4 | 18 |
| 5 | 18 |
| 6 | 18 |
| 7 | 18 |
| 8 | 18 |
| 9 | 18 |
| 10 | 17 |
| 11 | 17 |
| 12 | 17 |
| 13 | 17 |
| 14 | 16 |
| 15 | 16 |
| 16 | 15 |
| 17 | 15 |
| 18 | 15 |
| 19 | 15 |
| 20 | 15 |
| 21 | 15 |
| 22 | 15 |
| 23 | 15 |
| 24 | 15 |
| 25 | 15 |
| 26 | 15 |
| 27 | 15 |
| 28 | 15 |
| 29 | 15 |
| 30 | 16 |
| 31 | 16 |
Humidity in July
Most of July feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, July lands in the humid band about 42% of days. Sticky, muggy-or-worse air turns up on roughly 14% of them.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 15 | 16 | 16 | 17 | 17 | 17 | 17 | 17 | 17 | 16 | 16 | 15 | 14 | 13 | 13 | 12 | 11 | 10 | 10 | 9 | 9 | 9 | 8 |
| Comfortable (%) | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 35 | 35 | 35 | 35 | 35 | 34 | 34 | 33 | 33 | 32 | 31 | 31 | 30 | 29 | 29 | 28 | 28 | 27 | 26 | 26 | 25 | 25 | 24 | 24 |
| Humid (%) | 41 | 41 | 41 | 41 | 41 | 41 | 40 | 40 | 39 | 38 | 38 | 38 | 38 | 39 | 39 | 40 | 40 | 41 | 41 | 42 | 43 | 43 | 44 | 45 | 46 | 46 | 47 | 47 | 47 | 46 | 46 |
| Muggy (%) | 11 | 11 | 11 | 11 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 12 | 12 | 13 | 14 | 14 | 15 | 16 | 16 | 17 | 18 | 19 | 20 | 21 | 22 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | |
|---|---|---|---|---|
| 1 | 15 | 34 | 41 | 11 |
| 2 | 14 | 34 | 41 | 11 |
| 3 | 14 | 34 | 41 | 11 |
| 4 | 14 | 34 | 41 | 11 |
| 5 | 14 | 34 | 41 | 12 |
| 6 | 14 | 34 | 41 | 12 |
| 7 | 14 | 34 | 40 | 12 |
| 8 | 14 | 35 | 40 | 11 |
| 9 | 15 | 35 | 39 | 11 |
| 10 | 16 | 35 | 38 | 11 |
| 11 | 16 | 35 | 38 | 11 |
| 12 | 17 | 35 | 38 | 11 |
| 13 | 17 | 34 | 38 | 11 |
| 14 | 17 | 34 | 39 | 11 |
| 15 | 17 | 33 | 39 | 11 |
| 16 | 17 | 33 | 40 | 11 |
| 17 | 17 | 32 | 40 | 11 |
| 18 | 16 | 31 | 41 | 12 |
| 19 | 16 | 31 | 41 | 12 |
| 20 | 15 | 30 | 42 | 13 |
| 21 | 14 | 29 | 43 | 14 |
| 22 | 13 | 29 | 43 | 14 |
| 23 | 13 | 28 | 44 | 15 |
| 24 | 12 | 28 | 45 | 16 |
| 25 | 11 | 27 | 46 | 16 |
| 26 | 10 | 26 | 46 | 17 |
| 27 | 10 | 26 | 47 | 18 |
| 28 | 9 | 25 | 47 | 19 |
| 29 | 9 | 25 | 47 | 20 |
| 30 | 9 | 24 | 46 | 21 |
| 31 | 8 | 24 | 46 | 22 |
Wind in July
Winds average 7 km/h in July.
Across July, daily wind ranges from about 7 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 7 | calm |
| 2 | 7 | calm |
| 3 | 7 | calm |
| 4 | 7 | calm |
| 5 | 7 | calm |
| 6 | 7 | calm |
| 7 | 7 | calm |
| 8 | 7 | calm |
| 9 | 7 | calm |
| 10 | 7 | calm |
| 11 | 7 | calm |
| 12 | 7 | calm |
| 13 | 7 | calm |
| 14 | 7 | calm |
| 15 | 7 | calm |
| 16 | 7 | calm |
| 17 | 7 | calm |
| 18 | 7 | calm |
| 19 | 7 | calm |
| 20 | 7 | calm |
| 21 | 7 | calm |
| 22 | 7 | calm |
| 23 | 7 | calm |
| 24 | 7 | calm |
| 25 | 7 | calm |
| 26 | 7 | calm |
| 27 | 7 | calm |
| 28 | 7 | calm |
| 29 | 7 | calm |
| 30 | 7 | calm |
| 31 | 7 | calm |
Sunrise & sunset in July
Daylight runs from about 15 h 12 min at the start of July to 14 h 24 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 48 minutes over July. Sunrise moves from 4:43 AM to 5:07 AM, and sunset from 7:53 PM to 7:34 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 15.2 | 15.2 | 15.2 | 15.1 | 15.1 | 15.1 | 15.1 | 15.1 | 15.1 | 15.0 | 15.0 | 15.0 | 15.0 | 15.0 | 14.9 | 14.9 | 14.9 | 14.9 | 14.8 | 14.8 | 14.8 | 14.7 | 14.7 | 14.7 | 14.7 | 14.6 | 14.6 | 14.6 | 14.5 | 14.5 | 14.4 |
| Sunrise (AM) | 4:43 | 4:43 | 4:44 | 4:44 | 4:45 | 4:45 | 4:46 | 4:47 | 4:47 | 4:48 | 4:49 | 4:50 | 4:50 | 4:51 | 4:52 | 4:53 | 4:54 | 4:55 | 4:55 | 4:56 | 4:57 | 4:58 | 4:59 | 5:00 | 5:01 | 5:02 | 5:03 | 5:04 | 5:05 | 5:06 | 5:07 |
| Sunset (PM) | 7:53 | 7:53 | 7:53 | 7:53 | 7:53 | 7:52 | 7:52 | 7:52 | 7:51 | 7:51 | 7:51 | 7:50 | 7:50 | 7:49 | 7:48 | 7:48 | 7:47 | 7:46 | 7:46 | 7:45 | 7:44 | 7:43 | 7:42 | 7:41 | 7:41 | 7:40 | 7:39 | 7:38 | 7:36 | 7:35 | 7:34 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 15.2 | 4:43 | 7:53 |
| 2 | 15.2 | 4:43 | 7:53 |
| 3 | 15.2 | 4:44 | 7:53 |
| 4 | 15.1 | 4:44 | 7:53 |
| 5 | 15.1 | 4:45 | 7:53 |
| 6 | 15.1 | 4:45 | 7:52 |
| 7 | 15.1 | 4:46 | 7:52 |
| 8 | 15.1 | 4:47 | 7:52 |
| 9 | 15.1 | 4:47 | 7:51 |
| 10 | 15.0 | 4:48 | 7:51 |
| 11 | 15.0 | 4:49 | 7:51 |
| 12 | 15.0 | 4:50 | 7:50 |
| 13 | 15.0 | 4:50 | 7:50 |
| 14 | 15.0 | 4:51 | 7:49 |
| 15 | 14.9 | 4:52 | 7:48 |
| 16 | 14.9 | 4:53 | 7:48 |
| 17 | 14.9 | 4:54 | 7:47 |
| 18 | 14.9 | 4:55 | 7:46 |
| 19 | 14.8 | 4:55 | 7:46 |
| 20 | 14.8 | 4:56 | 7:45 |
| 21 | 14.8 | 4:57 | 7:44 |
| 22 | 14.7 | 4:58 | 7:43 |
| 23 | 14.7 | 4:59 | 7:42 |
| 24 | 14.7 | 5:00 | 7:41 |
| 25 | 14.7 | 5:01 | 7:41 |
| 26 | 14.6 | 5:02 | 7:40 |
| 27 | 14.6 | 5:03 | 7:39 |
| 28 | 14.6 | 5:04 | 7:38 |
| 29 | 14.5 | 5:05 | 7:36 |
| 30 | 14.5 | 5:06 | 7:35 |
| 31 | 14.4 | 5:07 | 7:34 |
Solar energy in July
Average shortwave solar energy reaching the ground each day in July, about 6.97 kWh/m² — the sunniest month for solar.
For context, solar energy here swings from a low near 1.43 kWh/m² to a high of 6.97 kWh/m² in July across the year — July's 6.97 kWh/m² sits near the top of that range.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 6.9 | 6.9 | 6.9 | 6.9 | 6.8 | 6.8 | 6.8 | 6.8 | 6.7 | 6.7 | 6.7 | 6.6 |
| Level | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 7.1 | Intense |
| 2 | 7.1 | Intense |
| 3 | 7.1 | Intense |
| 4 | 7.1 | Intense |
| 5 | 7.1 | Intense |
| 6 | 7.1 | Intense |
| 7 | 7.1 | Intense |
| 8 | 7.1 | Intense |
| 9 | 7.1 | Intense |
| 10 | 7.1 | Intense |
| 11 | 7.1 | Intense |
| 12 | 7.0 | Intense |
| 13 | 7.0 | Intense |
| 14 | 7.0 | Intense |
| 15 | 7.0 | Intense |
| 16 | 7.0 | Intense |
| 17 | 7.0 | Intense |
| 18 | 7.0 | Intense |
| 19 | 7.0 | Intense |
| 20 | 6.9 | Intense |
| 21 | 6.9 | Intense |
| 22 | 6.9 | Intense |
| 23 | 6.9 | Intense |
| 24 | 6.8 | Intense |
| 25 | 6.8 | Intense |
| 26 | 6.8 | Intense |
| 27 | 6.8 | Intense |
| 28 | 6.7 | Intense |
| 29 | 6.7 | Intense |
| 30 | 6.7 | Intense |
| 31 | 6.6 | Intense |
Is July a good time to visit Siena?
Our two travel scores rate July for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
July is a reasonable time to visit Siena for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Siena in July
From July's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In July, Siena sees daytime highs around 29°C and nights near 17°C. Pack light clothes and sun protection. About 5 days see rain.
UV index in Siena in July
Clear-sky midday UV in July peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Siena peaks around July 14 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 3 | 5 | 6 | 6 | 8 | 9 | 7 | 5 | 3 | 2 | 1 |
| Level | Low | Moderate | Moderate | High | High | Very high | Very high | Very high | High | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 3 | Moderate |
| Mar | 5 | Moderate |
| Apr | 6 | High |
| May | 6 | High |
| Jun | 8 | Very high |
| Jul | 9 | Very high |
| Aug | 7 | Very high |
| Sep | 5 | High |
| Oct | 3 | Moderate |
| Nov | 2 | Moderate |
| Dec | 1 | Low |
Air quality in Siena in July
Average fine-particle pollution (PM2.5) through the year — so you can see where July falls, not just the annual average.
Air quality in Siena is worst in March — around 17 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 14 | 14 | 17 | 16 | 15 | 14 | 12 | 13 | 12 | 13 | 12 | 12 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Moderate | Moderate | Moderate | Good | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 14 | Moderate |
| Feb | 14 | Moderate |
| Mar | 17 | Moderate |
| Apr | 16 | Moderate |
| May | 15 | Moderate |
| Jun | 14 | Moderate |
| Jul | 12 | Good |
| Aug | 13 | Moderate |
| Sep | 12 | Moderate |
| Oct | 13 | Moderate |
| Nov | 12 | Good |
| Dec | 12 | Moderate |
Where is Siena?
Siena sits at 43.3°N, 11.3°E, 322 m above sea level, in Italy. The nearest listed city is Colle di Val d'Elsa, 20 km away.
Topography around Siena
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Siena.
Within 3 km, the terrain around Siena has only modest variations in elevation — a maximum elevation change of 199 m around an average of 283 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 520 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,724 m.
The land around Siena is covered by trees (57%) and grassland (22%) within 3 km, trees (55%) and cropland (24%) within 16 km, and trees (62%) within 80 km.
Italy travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / F / L
- 230 V · 50 Hz
- Prices
- ≈ 69% of US
- price level, 2025
- GDP per capita
- $43,309
- 2025
- Happiness
- 6.6 / 10
- World Happiness, 2025
- Safe drinking water
- 97%
- of population, 2024
- Homicide rate
- 0.6
- per 100k, 2023
- Road deaths
- 5.3
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Moderate
- EF EPI 513
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Siena (43.3182°, 11.3306°, elevation 322 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).