Heidelberg Sunshine Hours by Month

Sunshine plays a big role in understanding the climate of a city. This page shows the total number of hours of direct sunlight per month and the average hours per day in Heidelberg, Gauteng, South Africa. Long-term data from 1990 to 2020 was used to calculate these averages.

Monthly hours of sunshine

Across the seasons, sunshine hours in Heidelberg vary. From a high of 284 hours in August, to a low of 225 hours in February, the city offers a balanced mix of sunny and overcast days. The total annual sunshine amounts to 3126 hours.

Daily hours of sunshine

Enjoy up to 9.5 hours of daily sun in July, and experience slightly darker atmosphere in February, with about 7.5 hours of daily sunlight.

Average percent of sunshine

On average the sun shines 87% of the time during the day in August, the highest percentage of any month. December has the lowest percentage at 61%.

Heidelberg enjoys an average of 3126 hours of sunshine annually. Let’s compare this with some popular tourist destinations:

Athens, Greece, enjoys 2769 hours of sunshine each year, making it one of the sunniest destinations in the Mediterranean region.

Manchester, UK, experiences just around 1420 hours of sunshine annually.

In Shanghai, China, the annual average sunshine is 1780 hours, with cloudier weather in summer.

Perth, Australia, enjoys 3180 hours of sunshine annually, the highest among major Australian cities.

December, Heidelberg’s wettest month, receives 138 mm (5.4 in) of rainfall and has a maximum daytime temperature of 27°C (81°F). During the driest month July you can expect a temperature of 20°C (68°F).

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