Weather in Siena for August 2027
In general, the average temperature in Siena at the beginning of August is 34.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 31 °C by the end of August.
Siena experiences moderate rainfall in August, with an average of 8 rainy days and a total precipitation of 67.2 mm.
Is August a good time to visit Siena? check out the best time to travel to Siena page.
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Siena Weather August
Temperatures trend during August in Siena
August weather in Siena day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Aug. |  Sunny | 35° /17° | 0.1 mm | 9 | |
| 2 Aug. | Sunny | 34° /17° | 0 mm | 9 | |
| 3 Aug. |  Patchy light rain with thunder | 34° /18° | 0.8 mm | 8 | |
| 4 Aug. |  Patchy rain possible | 34° /17° | 0 mm | 9 | |
| 5 Aug. | Sunny | 36° /18° | 0 mm | 9 | |
| 6 Aug. | Patchy rain possible | 36° /18° | 0.3 mm | 9 | |
| 7 Aug. |  Thundery outbreaks possible | 36° /18° | 0 mm | 9 | |
| 8 Aug. |  Partly cloudy | 37° /18° | 0.4 mm | 9 | |
| 9 Aug. | Partly cloudy | 37° /19° | 0 mm | 9 | |
| 10 Aug. | Sunny | 38° /20° | 0 mm | 9 | |
| 11 Aug. | Sunny | 38° /20° | 0.1 mm | 9 | |
| 12 Aug. |  Light rain | 38° /20° | 3.8 mm | 9 | |
| 13 Aug. | Patchy rain possible | 37° /20° | 0.5 mm | 8 | |
| 14 Aug. | Light rain | 37° /18° | 4.8 mm | 9 | |
| 15 Aug. | Sunny | 36° /18° | 0.3 mm | 8.9 | |
| 16 Aug. | Partly cloudy | 35° /19° | 0.3 mm | 8 | |
| 17 Aug. | Patchy light drizzle | 33° /19° | 2 mm | 8 | |
| 18 Aug. | Patchy rain possible | 31° /17° | 2.3 mm | 7 | |
| 19 Aug. | Thundery outbreaks possible | 31° /18° | 1.6 mm | 7 | |
| 20 Aug. | Light rain | 30° /18° | 4.1 mm | 6 | |
| 21 Aug. |  Moderate rain | 29° /18° | 10.6 mm | 6 | |
| 22 Aug. | Light rain | 29° /17° | 9.6 mm | 7 | |
| 23 Aug. | Partly cloudy | 32° /17° | 0.5 mm | 8 | |
| 24 Aug. | Sunny | 32° /17° | 0.5 mm | 8 | |
| 25 Aug. | Light rain | 31° /17° | 4.5 mm | 6 | |
| 26 Aug. | Sunny | 31° /18° | 0.3 mm | 8 | |
| 27 Aug. |  Heavy rain at times | 33° /18° | 9.8 mm | 8 | |
| 28 Aug. | Patchy rain possible | 32° /19° | 2.2 mm | 7 | |
| 29 Aug. | Light rain | 30° /18° | 2.8 mm | 7 | |
| 30 Aug. | Light rain | 29° /17° | 4.9 mm | 7 | |
| 31 Aug. | Sunny | 30° /17° | 0 mm | 7 | |
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Siena weather in August vs July vs September
| July | August | September | |
|---|---|---|---|
| Weather | Sunny | Sunny | Sunny |
| Temperatures | 34°/17° | 34°/18° | 27°/14° |
| Rainfall | 18 mm | 67 mm | 83 mm |
| Wind | 20.8 km/h | 17.8 km/h | 14.7 km/h |
| Humidity | 53% | 56% | 65% |
| Rainy days | 3 days | 8 days | 7 days |
| Dry days | 28 days | 23 days | 23 days |
Planning a trip to Siena? Discover the best time to visit
Siena in August - FAQ
What are the expected maximum and minimum temperatures in Siena during August?
How much rainfall should be expected in Siena during August?
What are the typical wind conditions in Siena during August?
August rainfall patterns in Siena
UV exposure in Siena during August
What to pack to Siena in August?
Warm & sunny · highs around 34 °C, frequent showers
As you prepare for your trip to Siena in August, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Siena, during August, is comfortable and enjoyable, regardless of the weather conditions.
🧥 Clothing
👟 Footwear
🎒 Accessories
🧴 Personal Items
Where is Siena?Get accurate weather forecasts for Siena, located at latitude 43.318 and longitude 11.331. Stay updated with localized weather information tailored for Siena.