Heerlen 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 Heerlen, Limburg, Netherlands. These averages rely on historical data collected over 30 years, from 1990 to 2020.

Monthly hours of sunshine

Those who love seasonal contrasts will appreciate Heerlen. Expect long, bright days with 211 hours in July and darker periods with just 55 hours in December. The total annual amount of sun is 1702 hours.

Daily hours of sunshine

For those who appreciate different seasons, Heerlen serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 7.0 hours of sunshine daily, and embrace the darker days in December, offering only 1.8 hours of daily sunlight.

Average percent of sunshine

On average the sun shines 44% of the time during the day in August, the highest percentage of any month. December has the lowest percentage at 21%.

Heerlen enjoys an average of 1702 hours of sunshine annually. Let’s compare this with some popular tourist destinations:

Athens, Greece, enjoys 2769 hours of sunshine each year, making it one of the sunniest destinations in the Mediterranean region.

In contrast, Tromsø , Norway, receives only about 1270 hours of sunshine per year, known for the polar night with no sunlight for weeks during winter.

The climate in San Francisco, USA, includes 3072 hours of sunshine annually, thanks to its mild coastal weather.

Adelaide, Australia, enjoys 2770 hours of sunshine annually, with long, sunny summers.

December, Heerlen’s wettest month, receives 82 mm (3.2 in) of rainfall and has a maximum daytime temperature of 7°C (45°F). During the driest month April you can expect a temperature of 15°C (59°F).

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