Rio Grande Sunshine Hours by Month

The amount of sunshine is fundamental to comprehending a place's climate. This page shows the total number of hours of direct sunlight per month and the average hours per day in Rio Grande, Puerto Rico. These averages rely on historical data collected over 30 years, from 1990 to 2020.

Monthly hours of sunshine

Across the seasons, sunshine hours in Rio Grande vary. From a high of 284 hours in March, to a low of 203 hours in November, the city offers a balanced mix of sunny and overcast days. The total annual sunshine amounts to 2966 hours.

Daily hours of sunshine

This means you will experience moderate variation in sunshine hours throughout the year. With 9.5 hours daily sunshine in March, it dips to 6.8 hours in November.

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%.

Rio Grande enjoys an average of 2966 hours of sunshine annually. Let’s compare this with some popular tourist destinations:

The city of Rome, Italy, experiences 2470 hours of sunshine annually, adding to its charm as a year-round tourist destination.

In contrast, Brussels, Belgium, receives only about 1590 hours of sunshine per year, known for its frequently overcast and rainy skies.

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

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

September, Rio Grande’s wettest month, receives 135 mm (5.3 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 Rio Grande Precipitation page.