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, North Puerto Rico, Puerto Rico. Long-term data from 1990 to 2020 was used to calculate these averages.

Monthly hours of sunshine

San Juan experiences sunny spells throughout the year. The sunniest month, March, sees up to 284 hours of sunshine, while November, the least sunny month, still provides a respectable 203 hours. The total annual sunshine amounts to 2966 hours.

Daily hours of sunshine

This means you can enjoy sunny spells year-round. March sees up to 9.5 hours of daily sunshine, perfect for a sunny trip. November, the least sunny month, still offers a generous 6.8 hours of sun despite this cloudier / rainier time of the year.

Average percent of sunshine

On average the sun shines 76% of the time during the day in March, the highest percentage of any month. November has the lowest percentage at 60%.

San Juan enjoys an average of 2966 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, 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.

The climate in San Francisco, USA, includes 3072 hours of sunshine annually, thanks to its mild coastal weather.

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

September, San Juan’s wettest month, receives 118 mm (4.6 in) of rainfall and has a maximum daytime temperature of 31°C (88°F). During the driest month February you can expect a temperature of 28°C (82°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.