Average Monthly Sunshine in Alpharetta (GA)

The graphs on this page shows the average number of hours per month and per day that Alpharetta receives direct sunlight. The numbers are calculated over a 30-year period to provide a reliable average.

Monthly hours of sunshine

If you're visiting Alpharetta, timing is key. In May, you can enjoy up to 288 hours of sunshine, while the shorter days of January provide just 164 hours. The total annual amount of sun is 2740 hours.

Daily hours of sunshine

Seasonal changes in sunshine hours are quite obvious in Alpharetta. While May receives considerable daily sunshine with up to 9.6 hours, January marks the darkest time of the year, where sunshine is scarce with only 5.5 hours of sunlight per day.

Alpharetta’s total hours of sunshine compared to other major cities

Alpharetta enjoys an average of 2740 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, Brussels, UK, receives only about 1590 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.

Adelaide, Australia, enjoys 2770 hours of sunshine annually, with long, sunny summers.

Other climate information

December, Alpharetta’s wettest month, receives 106 mm of rainfall and has a maximum daytime temperature of 13°C. During the driest month June you can expect a temperature of 31°C.

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