Glasgow 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 Glasgow, Highland, Scotland. This average is based on long-term data collected between 1990 and 2020.

Monthly hours of sunshine

Sunshine in Glasgow varies greatly throughout the year. The sunniest month, May, reaches an impressive 188 hours, while January, the darkest month, offers only 37 hours. The total annual amount of sun is 1290 hours.

Daily hours of sunshine

This means the city can be enjoyed more throughout the sunniest month of May under a blue sky, with approximately 6.3 hours of sunshine daily. In contrast, the city experiences much darker days in January, with only 1.2 hours of sunlight per day.

Average percent of sunshine

On average the sun shines 37% of the time during the day in May, the highest percentage of any month. December has the lowest percentage at 12%.

Glasgow enjoys an average of 1290 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, Juneau, Alaska, receives only about 1523 hours of sunshine per year and is known for its very short days in winter and frequently overcast conditions.

Boston, USA, enjoys 2629 hours of sunshine annually, with distinct seasons and many bright, sunny days.

Melbourne, Australia, has 2380 hours of sunshine annually, with its famous “four seasons in a day” weather pattern.

January, Glasgow’s wettest month, receives 105 mm (4.1 in) of rainfall and has a maximum daytime temperature of 8°C (46°F). During the driest month May 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 Glasgow Precipitation page.