San Giacomo Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit San Giacomo.
Climate overview of San Giacomo
San Giacomo, Trentino Alto Adige, Italy, experiences significant temperature variation throughout the year. Summers bring daytime highs of 17°C (63°F) in July, while winters cool to -4°C (25°F) in January.
The city has a wet climate, receiving around 1390 mm (55 in) of rain/snowfall per year. Despite the high annual total, it has mild summers and very cold winters. June is the wettest month. The most sunshine falls in May, with an average of 6.2 hours of daily sunshine.
San Giacomo Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in San Giacomo - and find the best time to visit.
Monthly Temperature in San Giacomo
Depending on the time of the year, temperatures range from moderate to very cold in San Giacomo. On average, daytime temperatures range from a moderate 17°C (63°F) in July to a very cold -4°C (25°F) in January.
Nighttime temperatures range from 7°C (45°F) in July to -11°C (12°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in San Giacomo
San Giacomo has a relatively rain/snowy climate with high precipitation levels, averaging 1390 mm (55 in) of rain/snowfall annually. The seasons in San Giacomo bring significant changes in precipitation. The wettest month, June, receives heavy rainfall, with an average of 170 mm (6.7 in) of precipitation. This rainfall is distributed across 20 rainy days.
In contrast, the driest month, January, experiences much less snowfall, totaling 73 mm (2.9 in) over 16 snowy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our San Giacomo Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in San Giacomo
In San Giacomo, summer days are longer and more sunny, with daily sunshine hours peaking at 6.2 hours in May. As the darker season arrives, the brightness of the sun becomes less. January sees a soft sun for only 0.1 hours per average day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Humidity in San Giacomo by Month
The relative humidity is high throughout the year in San Giacomo.
The city experiences its highest humidity in December, reaching 84%. In May, the humidity drops to its lowest level at 46%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit San Giacomo
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: June, July and August
- Warmest weather: July and August
- Most sunshine: May, July and August
- Fewest rainy days: February, September, October and November
- Seasonal pattern: Mild summers and very cold winters
- Coldest conditions: January, with freezing nights around -11°C (12°F).
Frequently asked questions about the climate in San Giacomo
What is the best time to visit San Giacomo?
June, July and August typically offer the most optimal weather in San Giacomo. In contrast, January, February, March, April, May, September, October, November and December tend to have less optimal conditions. San Giacomo has mild summers and very cold winters.
What temperatures can I expect in San Giacomo?
Daytime highs range from -4°C (25°F) in January to 17°C (63°F) in July. Nighttime lows range from -11°C (12°F) to 7°C (45°F). Temperatures vary considerably through the year.
How much rain does San Giacomo get?
Annual rainfall is around 1390 mm (55 in). June is the wettest month with 170 mm (6.7 in), while January is the driest with 73 mm (2.9 in).
How sunny is San Giacomo?
San Giacomo receives around 1,308 hours of sunshine per year. May is the sunniest month with 185 hours, while January is the cloudiest with just 3 hours.
San Giacomo 3-Day Forecast
San Giacomo 3-Day Forecast
San Giacomo on the map
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