Average Rainy - Precipitation days in Siena

Siena sees 135 days of precipitation annually, totaling to 903 mm of rain/snow. Learn more about it on this page.

Monthly Distribution of Rainy Days

November is usually the wettest with 121 mm of rain over 14 rainy days, whereas July averages 33 mm during its 6 rainy days.

Amsterdam Precipitation Days Compared World Wide

On average, Siena receives over 135 days of precipitation annually. For comparison, here is some data from popular tourist destinations around the world:

In Riyadh, Saudi Arabia, there are about 29 precipitation days annually, reflecting its dry desert environment.

In Bogotá, Colombia, there are around 188 precipitation days annually, typical for its high-altitude tropical climate.

In Athens, Greece, it rains around 70 days in the year; therefore, it is one of the driest Mediterranean cities, mainly dominated by winter rainfall.

Every year, the city of New York, USA, records about 130 precipitation days, with rainfall evenly distributed throughout the year.

In Shanghai, China, there are approximately 147 precipitation days per year, with a humid subtropical climate.

Adelaide, Australia, records about 86 precipitation days per year, with dry summers and wet winters.

Rain Facts From Around the Globe

Let’s explore more fascinating precipitation records:

• Tutunendo, Colombia, gets about 340 days of rain every year, which arguably makes it the wettest place in the world.
• On Réunion Island, a tropical cyclone generated 1825 mm in just 24 hours.
• Singapore receives thunder on 167 days in the year and is considered one of the most thunderous cities in the world.
• The smallest drops that fall are called drizzle drops, and they have a diameter of 0.5 mm.
• Some heavy storms generate "diamond dust," which consists of very small ice crystals that float in the air.

For more detailed information about rainfall patterns in Siena, visit our Rainfall & Precipitation page.