Castlerock Sunshine Hours by Month

The amount of sunshine is fundamental to comprehending a place's climate. This page shows the total number of hours of direct sunlight per month and the average hours per day in Castlerock, Londonderry County, United Kingdom. The numbers reflect climate data gathered over a 30-year period, from 1990 to 2020.

Monthly hours of sunshine

Those who love seasonal contrasts will appreciate Castlerock. Expect long, bright days with 203 hours in May and darker periods with just 39 hours in December. The total annual amount of sun is 1342 hours.

Daily hours of sunshine

Seasonal changes in sunshine hours are quite obvious in Castlerock. While May receives considerable daily sunshine with up to 6.8 hours, December marks the darkest time of the year, where sunshine is scarce with only 1.3 hours of sunlight per day.

Castlerock enjoys an average of 1342 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.

In contrast, London, UK, receives only about 1659 hours of sunshine per year, known for its frequently overcast and rainy skies.

Oslo, Norway, receives approximately 1690 hours of sunshine annually.

In Tokyo, Japan, the average annual sunshine is 1930 hours, with sunny periods between rainy seasons.

November, Castlerock’s wettest month, receives 112 mm (4.4 in) of rainfall and has a maximum daytime temperature of 11°C (52°F). During the driest month May you can expect a temperature of 13°C (55°F).

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