Key Biscayne (FL) 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 Key Biscayne, Florida, United States of America. These averages rely on historical data collected over 30 years, from 1990 to 2020.

Monthly hours of sunshine

Key Biscayne Nusa Penida experiences both sunny and cloudy or rainy periods, with some seasonal variation. It receives approximately 308 hours of sunshine in July and 216 hours in December, contributing to a total annual sunshine amount of 3122 hours.

Daily hours of sunshine

This means you can enjoy sunny spells year-round. July sees up to 10.3 hours of daily sunshine, perfect for a sunny trip. December, the least sunny month, still offers a generous 7.2 hours of sun despite this cloudier / rainier time of the year.

Average percent of sunshine

On average the sun shines 77% of the time during the day in April, the highest percentage of any month. December has the lowest percentage at 66%.

Key Biscayne enjoys an average of 3122 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.

In Chicago, USA, the annual sunshine averages 2520 hours, contributing to its humid continental climate.

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

August, Key Biscayne’s wettest month, receives 186 mm (7.3 in) of rainfall and has a maximum daytime temperature of 32°C (90°F). During the driest month January you can expect a temperature of 24°C (75°F).

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