Altdorf Sunshine Hours by Month

When exploring climate, sunlight hours tell an important story. This page shows the total number of hours of direct sunlight per month and the average hours per day in Altdorf, Uri, Switzerland. These averages rely on historical data collected over 30 years, from 1990 to 2020.

Monthly hours of sunshine

Seasonal sunshine in Altdorf varies. It peaks at 168 hours in July and drops to 36 hours in December. The total annual amount of sun is 1385 hours.

Daily hours of sunshine

For those who appreciate different seasons, Altdorf serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 5.6 hours of sunshine daily, and embrace the darker days in December, offering only 1.2 hours of daily sunlight.

Average percent of sunshine

On average the sun shines 52% of the time during the day in September, the highest percentage of any month. December has the lowest percentage at 30%.

Altdorf enjoys an average of 1385 hours of sunshine annually. Let’s compare this with some popular tourist destinations:

The city of Rome, Italy, experiences 2470 hours of sunshine annually, adding to its charm as a year-round tourist destination.

Manchester, UK, experiences just around 1420 hours of sunshine annually.

Stockholm, Sweden, receives approximately 1907 hours of sunshine annually.

In Brisbane, Australia, the annual sunshine averages 2999 hours, making it one of Australia’s sunniest cities.

August, Altdorf’s wettest month, receives 220 mm (8.7 in) of rainfall and has a maximum daytime temperature of 19°C (66°F). During the driest month February you can expect a temperature of 0°C (32°F).

For more detailed insights into the city’s temperatures, check out our Temperature page. To explore more about precipitation patterns, visit our Altdorf Precipitation page.