Willisau Sunshine Hours by Month

In climate discussions, the hours of sunlight reveal much about a location. This page shows the total number of hours of direct sunlight per month and the average hours per day in Willisau, Canton of Lucerne, Switzerland. The figures are based on a 30-year period (1990–2020) to provide a reliable average.

Monthly hours of sunshine

Seasonal sunshine in Willisau varies. It peaks at 244 hours in July and drops to 54 hours in December. The total annual amount of sun is 1792 hours.

Daily hours of sunshine

In Willisau, summer days are longer and more sunny, with daily sunshine hours peaking at 8.1 hours in July. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 1.8 hours per day.

Average percent of sunshine

On average the sun shines 56% of the time during the day in July, the highest percentage of any month. December has the lowest percentage at 23%.

Willisau vs Major Cities: Sunshine Compared

Willisau enjoys an average of 1792 hours of sunshine annually. Let’s compare this with some popular tourist destinations:

In Barcelona, Spain, there are 2530 hours of sunshine annually and is a city that can be visited year-round.

In contrast, Reykjavík, Iceland, receives only about 1330 hours of sunshine per year, known for its frequently overcast and rainy skies.

Boston, USA, enjoys 2629 hours of sunshine annually, with distinct seasons and many bright, sunny days.

Perth, Australia, enjoys 3180 hours of sunshine annually, the highest among major Australian cities.

Related Climate Data for Willisau

July, Willisau’s wettest month, receives 179 mm (7 in) of rainfall and has a maximum daytime temperature of 24°C (75°F). During the driest month January you can expect a temperature of 4°C (39°F).

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