Climate Overview
The climate in San Giovanni Valdarno is temperate. The average annual temperature is 14°C and approximately 1016mm of precipitation falls per year. February is the wettest month, receiving around 163mm of rainfall. San Giovanni Valdarno is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, September. The coldest months are December, January, March, when temperatures can drop to 1°C.
Temperature
Temperatures in San Giovanni Valdarno vary considerably across the year, with a 28°C difference between the coldest and warmest months. The warmest month is July, when average highs reach 29°C and the mean temperature sits around 24°C. December is the coolest month, with minimum temperatures around 1°C and an average of 5°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs. The sharpest temperature change occurs between September and October, with a 6°C shift in average temperatures.
Precipitation
San Giovanni Valdarno is a moderately rainy area, receiving approximately 1016mm of precipitation annually, which averages out to around 85mm per month. The wettest month is February, averaging 163mm of rainfall. November and October also tend to see above-average precipitation. The driest month is December, with just 11mm. That's 152mm less than February, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.
Wind
San Giovanni Valdarno is relatively calm, with an average annual wind speed of 2km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is March, averaging 3km/h, though still comfortable for most outdoor activities. The calmest conditions occur in December, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 1km/h gap between the calmest and windiest months.
Seasons
52 days until Autumn
It is currently summer in San Giovanni Valdarno, which began on June 21, 2026. San Giovanni Valdarno is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 29°C, while the coldest stretch bottoms out in December near 1°C. Autumn is next, beginning on September 23, 2026 — 52 days from now.
Spring
Temperatures range from 5 to 20°C. Precipitation is moderate at around 250mm for the season, averaging 83mm per month. Winds are generally light, averaging 2km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 15 to 29°C. Rainfall is relatively light, with around 137mm over the season and a monthly average of 46mm. Winds are generally light, averaging 2km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 6 to 25°C. Rainfall is heavy, totalling around 355mm across the season with a monthly average of 118mm. Winds are generally light, averaging 2km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 1 to 12°C. Precipitation is moderate at around 274mm for the season, averaging 91mm per month. Winds are generally light, averaging 2km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Best Time to Visit
The best time to visit San Giovanni Valdarno is during June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 21°C with modest rainfall averaging 54mm per month. By contrast, December can be quite cold with temperatures dropping to 1°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.
Monthly Climate Data
The table below shows monthly climate averages for San Giovanni Valdarno based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.
