Bionaz Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Bionaz.
Climate overview of Bionaz
Temperatures in Bionaz, Valle d'Aosta, Italy, vary greatly throughout the year. July is the hottest month at 17°C (63°F), while January is the coldest at -6°C (21°F).
Rain/snowfall is high, totalling around 1311 mm (52 in) per year. November is the wettest month and February the driest. The city also experiences mild summers and very cold winters. The most sunshine falls in July, with an average of 6.7 hours of daily sunshine.
Bionaz Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Bionaz - and find the best time to visit.
Monthly Temperature in Bionaz
The climate in Bionaz is known for significant temperature differences throughout the year, making the weather dynamic. Average maximum daytime temperatures range from a moderate 17°C (63°F) in July, the warmest time of the year, to a very cold -6°C (21°F) during cooler months like January.
At night, you can expect temperatures ranging from 6°C (43°F) in July to around -14°C (7°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Bionaz
Bionaz has a notably wet climate with abundant precipitation, recording 1311 mm (52 in) of rain/snowfall per year. Year-round, Bionaz has a balanced climate with minimal variation in precipitation. The difference between the wettest month, November, with 134 mm (5.3 in), and the driest month, February, with 91 mm (3.6 in), is minimal. For more details, please visit our Bionaz 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 Bionaz
Seasonal changes in sunshine hours are quite dramatic in Bionaz. While July receives considerable daily sunshine with up to 6.7 hours, December marks the darkest time of the year, where sunshine is scarce with only 2.8 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Bionaz by Month
The relative humidity is high throughout the year in Bionaz.
The city experiences its highest humidity in August, reaching 70%. In January, the humidity drops to its lowest level at 65%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Bionaz
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: August
- Warmest weather: July and August
- Most sunshine: July
- Seasonal pattern: Mild summers and very cold winters
- Coldest conditions: January, with freezing nights around -14°C (7°F).
Frequently asked questions about the climate in Bionaz
What is the best time to visit Bionaz?
August typically offers the most optimal weather in Bionaz. In contrast, January, February, March, April, May, September, October, November and December tend to have less optimal conditions. Bionaz has mild summers and very cold winters.
What temperatures can I expect in Bionaz?
Daytime highs range from -6°C (21°F) in January to 17°C (63°F) in July. Nighttime lows range from -14°C (7°F) to 6°C (43°F). Temperatures vary considerably through the year.
How much rain does Bionaz get?
Annual rainfall is around 1311 mm (52 in). November is the wettest month with 134 mm (5.3 in), while February is the driest with 91 mm (3.6 in). In the coldest months, precipitation may fall as snow.
How sunny is Bionaz?
Bionaz receives around 1,685 hours of sunshine per year. July is the sunniest month with 202 hours, while December is the cloudiest with just 83 hours.
Bionaz 3-Day Forecast
Bionaz on the map
Bionaz is highlighted - select any city to see its climate.
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