Bionaz Weather & Climate: Best Time to Visit

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 most sunshine falls in July, with an average of 6.7 hours of daily sunshine.

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

Data from: Zermatt, Switzerland (30 KM, 19 Miles).

Daily hours of sunshine

Data from: Zermatt, Switzerland (30 KM, 19 Miles).

Daily percentage of sunshine

Data from: Zermatt, Switzerland (30 KM, 19 Miles).

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

Data from: Zermatt, Switzerland (30 KM, 19 Miles).

Bionaz 3-Day Forecast

10-Day Forecast

Select a Month

Check the conditions for any month of the year.

Best Time to Visit Bionaz

Bionaz's weather is most enjoyable during July and August, with comfortable temperatures from 16°C (61°F) to 17°C (62°F). The moderate conditions ensure pleasant weather for exploring the area. Expect varied weather during this period with rainfall between 98 mm (3.9 in) and 105 mm (4.1 in), providing a good balance of sunny and rainy days.

Looking for inspiration on where to travel this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.