Castel 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 Castel, Guernsey, United Kingdom. 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 Castel. Expect long, bright days with 252 hours in July and darker periods with just 61 hours in December. The total annual amount of sun is 1888 hours.

Daily hours of sunshine

Seasonal changes in sunshine hours are quite obvious in Castel. While July receives considerable daily sunshine with up to 8.4 hours, December marks the darkest time of the year, where sunshine is scarce with only 2.0 hours of sunlight per day.

Average percent of sunshine

On average the sun shines 52% of the time during the day in August, the highest percentage of any month. December has the lowest percentage at 22%.

Castel enjoys an average of 1888 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, London, UK, receives only about 1659 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.

December, Castel’s wettest month, receives 56 mm (2.2 in) of rainfall and has a maximum daytime temperature of 12°C (54°F). During the driest month July you can expect a temperature of 18°C (64°F).

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