Roscommon 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 Roscommon, Roscommon County, Ireland. This average is based on long-term data collected between 1990 and 2020.

Monthly hours of sunshine

Sunshine in Roscommon varies greatly throughout the year. The sunniest month, May, reaches an impressive 157 hours, while December, the darkest month, offers only 35 hours. The total annual amount of sun is 1114 hours.

Daily hours of sunshine

Seasonal changes in sunshine hours are quite obvious in Roscommon. While May receives considerable daily sunshine with up to 5.2 hours, December marks the darkest time of the year, where sunshine is scarce with only 1.2 hours of sunlight per day.

Average percent of sunshine

On average the sun shines 39% of the time during the day in May, the highest percentage of any month. December has the lowest percentage at 17%.

Roscommon enjoys an average of 1114 hours of sunshine annually. Let’s compare this with some popular tourist destinations:

In Lisbon, Portugal, there are approximately 2801 hours of sunshine annually, highlighting its warm and sunny Mediterranean climate.

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

In Shanghai, China, the annual average sunshine is 1780 hours, with cloudier weather in summer.

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

December, Roscommon’s wettest month, receives 93 mm (3.7 in) of rainfall and has a maximum daytime temperature of 9°C (48°F). During the driest month March you can expect a temperature of 11°C (52°F).

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