Summerville (SC) 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 Summerville, South Carolina, United States of America. These values are calculated using 30 years of data (1990–2020) to ensure accuracy.

Monthly hours of sunshine

Seasonal sunshine in Summerville varies. It peaks at 295 hours in May and drops to 170 hours in December. The total annual amount of sun is 2810 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 9.8 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 5.7 hours of sunlight per day.

Average percent of sunshine

On average the sun shines 71% of the time during the day in April, the highest percentage of any month. December has the lowest percentage at 55%.

Summerville enjoys an average of 2810 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, 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.

Stockholm, Sweden, receives approximately 1907 hours of sunshine annually.

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

August, Summerville’s wettest month, receives 151 mm (5.9 in) of rainfall and has a maximum daytime temperature of 33°C (91°F). During the driest month January 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 Summerville Precipitation page.