Union City (CA) Sunshine Hours by Month
Sunshine is key to understanding how a place experiences its seasons. This page shows the total number of hours of direct sunlight per month and the average hours per day in Union City, California, United States of America. The figures are based on a 30-year period (1990–2020) to provide a reliable average.
Monthly hours of sunshine
Sunshine in Union City varies greatly throughout the year. The sunniest month, May, reaches an impressive 324 hours, while December, the darkest month, offers only 160 hours. The total annual amount of sun is 3058 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 10.8 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 5.3 hours of sunlight per day.
Average percent of sunshine
On average the sun shines 78% of the time during the day in April, the highest percentage of any month. December has the lowest percentage at 54%.
Union City vs Major Cities: Sunshine Compared
Union City enjoys an average of 3058 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.
Beijing, China, has 2505 hours of sunshine annually, with clear, sunny days in winter.
In Brisbane, Australia, the annual sunshine averages 2999 hours, making it one of Australia’s sunniest cities.
Related Climate Data for Union City
December, Union City’s wettest month, receives 3.4 mm (0.1 in) of rainfall and has a maximum daytime temperature of 15°C (59°F). During the driest month July you can expect a temperature of 25°C (77°F).
For more detailed insights into the city’s temperatures, check out our Temperature page. To explore more about precipitation patterns, visit our Union City Precipitation page.
