Roswell (GA) 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 Roswell, Georgia, United States of America. These values are calculated using 30 years of data (1990–2020) to ensure accuracy.

Monthly hours of sunshine

If you're visiting Roswell, 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 2733 hours.

Daily hours of sunshine

In Roswell, summer days are longer and more sunny, with daily sunshine hours peaking at 9.6 hours in May. As the darker season arrives, the brightness of the sun becomes less. January sees a soft sun for only 5.5 hours per day.

Average percent of sunshine

On average the sun shines 68% of the time during the day in October, the highest percentage of any month. January has the lowest percentage at 52%.

Roswell enjoys an average of 2733 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.

Osaka, Japan, experiences 2010 hours of sunshine annually, with bright, sunny weather in spring and autumn.

In Brisbane, Australia, the annual sunshine averages 2999 hours, making it one of Australia’s sunniest cities.

December, Roswell’s wettest month, receives 103 mm (4.1 in) of rainfall and has a maximum daytime temperature of 13°C (55°F). During the driest month June you can expect a temperature of 31°C (88°F).

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