Gretna Sunshine Hours by Month

Sunshine plays a big role in understanding the climate of a city. This page shows the total number of hours of direct sunlight per month and the average hours per day in Gretna, Dumfries and Galloway, United Kingdom. These values are calculated using 30 years of data (1990–2020) to ensure accuracy.

Monthly hours of sunshine

Sunshine in Gretna varies greatly throughout the year. The sunniest month, May, reaches an impressive 161 hours, while January, the darkest month, offers only 39 hours. The total annual amount of sun is 1189 hours.

Daily hours of sunshine

Seasonal changes in sunshine hours are quite obvious in Gretna. While May receives considerable daily sunshine with up to 5.4 hours, January marks the darkest time of the year, where sunshine is scarce with only 1.3 hours of sunlight per day.

Average percent of sunshine

On average the sun shines 35% of the time during the day in May, the highest percentage of any month. December has the lowest percentage at 16%.

Gretna enjoys an average of 1189 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.

Manchester, UK, experiences just around 1420 hours of sunshine annually.

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

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

December, Gretna’s wettest month, receives 90 mm (3.5 in) of rainfall and has a maximum daytime temperature of 8°C (46°F). During the driest month April 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 Gretna Precipitation page.