San Juan 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 San Juan, San Juan Province, Argentina. The figures are based on a 30-year period (1990–2020) to provide a reliable average.

Monthly hours of sunshine

Sunshine in San Juan varies greatly throughout the year. The sunniest month, December, reaches an impressive 350 hours, while June, the darkest month, offers only 208 hours. The total annual amount of sun is 3365 hours.

Daily hours of sunshine

Seasonal changes in sunshine hours are quite obvious in San Juan. While December receives considerable daily sunshine with up to 11.7 hours, June marks the darkest time of the year, where sunshine is scarce with only 6.9 hours of sunlight per day.

Average percent of sunshine

On average the sun shines 81% of the time during the day in April, the highest percentage of any month. June has the lowest percentage at 68%.

San Juan enjoys an average of 3365 hours of sunshine annually. Let’s compare this with some popular tourist destinations:

Seville, Spain, enjoys an impressive 2920 hours of sunshine per year, making it an ideal destination even in winter.

In contrast, London, UK, receives only about 1659 hours of sunshine per year, known for its frequently overcast and rainy skies.

Meanwhile, Buenos Aires, Argentina, enjoys a humid subtropical climate with 2520 hours of sunshine annually.

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

December, San Juan’s wettest month, receives 37 mm (1.5 in) of rainfall and has a maximum daytime temperature of 32°C (90°F). During the driest month June you can expect a temperature of 18°C (64°F).

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