Climate & Weather in Siena, 🇮🇹 Italy - Monthly Averages, Forecast & Air Quality
🇮🇹 Siena,
Italy
#2028
Nomad Score
6.0
Coords
43.3185536, 11.3316533
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CURRENT CONDITIONS
Temperature
27.3°C
/
13.5°C
Feels Like
28.6°C / 13.9°C
Weather
🌤️ Overcast
Humidity
%
Wind
8.0 km/h
(gusts 15.5)
UV Index
5.7
Sunrise / Sunset
06:52
/
19:26
Daylight
12.6 hrs
7-DAY FORECAST
| Date | Weather | High | Low | Rain % |
|---|---|---|---|---|
| Mon 14 Sep | 🌤️ Overcast | 27.3° | 13.5° | 0% |
| Tue 15 Sep | 🌤️ Overcast | 28.2° | 15.0° | 0% |
| Wed 16 Sep | 🌫️ Fog | 27.8° | 14.7° | 0% |
| Thu 17 Sep | ⛈️ Thunderstorm | 22.6° | 16.4° | 72% |
| Fri 18 Sep | 🌫️ Fog | 22.9° | 14.0° | 39% |
| Sat 19 Sep | 🌫️ Fog | 23.5° | 13.2° | 4% |
| Sun 20 Sep | 🌤️ Mainly clear | 25.4° | 12.4° | 2% |
BEST MONTHS TO VISIT
| Month | Rating | Avg High | Avg Low | Rain Days |
|---|---|---|---|---|
| October | Excellent | 21.1°C | 11.5°C | 7.2 |
| May | Excellent | 22.2°C | 11.0°C | 11.0 |
| September | Excellent | 25.7°C | 14.8°C | 8.2 |
| June | Excellent | 29.1°C | 16.4°C | 5.2 |
| August | Good | 31.7°C | 18.7°C | 6.0 |
| July | Good | 32.2°C | 19.0°C | 3.7 |
| April | Fair | 17.7°C | 6.5°C | 10.4 |
| March | Fair | 14.8°C | 4.4°C | 8.1 |
| November | Poor | 14.9°C | 6.2°C | 11.0 |
| February | Poor | 12.7°C | 3.2°C | 8.5 |
| January | Poor | 10.3°C | 2.1°C | 9.5 |
| December | Poor | 11.4°C | 3.4°C | 9.9 |
TEMPERATURE BY MONTH
PRECIPITATION & RAIN DAYS
SUNSHINE, UV & HUMIDITY
AIR QUALITY
28
🟢 Good
US Air Quality Index
European AQI: 24
PM2.5
7.1 µg/m³
PM10
9.4 µg/m³
Ozone
61.0 µg/m³
NO₂
5.2 µg/m³
SO₂
0.4 µg/m³
CO
164.0 µg/m³
UV Index
0.4
Dust
0.0 µg/m³
Pollen
🌾 Grass
0.4
🌳 Birch
0.0
🌿 Ragweed
1.7
MONTHLY CLIMATE DATA
| Month | High | Low | Mean | Feels Hi | Feels Lo | Precip | Rain Days | Snow | Sun | Daylight | UV | Humidity | Wind | Clouds |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan | 10.3° | 2.1° | 5.9° | 7.4° | -0.9° | 63.0 mm | 9.5 | 1.5 cm | 189.1 hrs | 9.4 hrs | - | 82.2% | 15.9 km/h | 63.4% |
| Feb | 12.7° | 3.2° | 7.4° | 10.0° | 0.3° | 70.9 mm | 8.5 | 1.5 cm | 198.8 hrs | 10.5 hrs | - | 79.0% | 14.9 km/h | 58.3% |
| Mar | 14.8° | 4.4° | 9.3° | 12.2° | 1.6° | 73.0 mm | 8.1 | 0.0 cm | 285.2 hrs | 12.0 hrs | - | 72.2% | 16.1 km/h | 53.8% |
| Apr | 17.7° | 6.5° | 11.9° | 16.1° | 4.2° | 80.5 mm | 10.4 | 0.3 cm | 327.0 hrs | 13.4 hrs | - | 70.3% | 16.7 km/h | 52.2% |
| May | 22.2° | 11.0° | 16.5° | 21.9° | 9.8° | 94.1 mm | 11.0 | 0.0 cm | 362.7 hrs | 14.7 hrs | - | 71.2% | 16.2 km/h | 53.4% |
| Jun | 29.1° | 16.4° | 22.7° | 30.4° | 16.8° | 39.0 mm | 5.2 | 0.0 cm | 399.0 hrs | 15.3 hrs | - | 62.2% | 15.4 km/h | 36.8% |
| Jul | 32.2° | 19.0° | 25.6° | 33.4° | 20.0° | 23.4 mm | 3.7 | 0.0 cm | 430.9 hrs | 15.0 hrs | - | 55.9% | 17.0 km/h | 22.8% |
| Aug | 31.7° | 18.7° | 25.1° | 32.7° | 19.9° | 40.6 mm | 6.0 | 0.0 cm | 384.4 hrs | 13.9 hrs | - | 58.0% | 15.6 km/h | 32.1% |
| Sep | 25.7° | 14.8° | 19.9° | 25.8° | 14.9° | 92.8 mm | 8.2 | 0.0 cm | 315.0 hrs | 12.5 hrs | - | 70.2% | 14.7 km/h | 44.5% |
| Oct | 21.1° | 11.5° | 15.8° | 20.3° | 10.6° | 95.8 mm | 7.2 | 0.0 cm | 263.5 hrs | 11.0 hrs | - | 77.3% | 14.6 km/h | 53.8% |
| Nov | 14.9° | 6.2° | 10.2° | 12.9° | 4.0° | 91.5 mm | 11.0 | 0.0 cm | 210.0 hrs | 9.7 hrs | - | 81.3% | 14.8 km/h | 59.6% |
| Dec | 11.4° | 3.4° | 7.0° | 9.3° | 0.7° | 84.8 mm | 9.9 | 0.4 cm | 179.8 hrs | 9.0 hrs | - | 85.5% | 13.1 km/h | 62.0% |