Florida Keys 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 Florida Keys, United States of America. The figures are based on a 30-year period (1990–2020) to provide a reliable average.

Monthly hours of sunshine

Across the seasons, sunshine hours in Florida Keys vary. From a high of 341 hours in May, to a low of 231 hours in November, the city offers a balanced mix of sunny and overcast days. The total annual sunshine amounts to 3412 hours.

Daily hours of sunshine

This means you can enjoy sunny spells year-round. May sees up to 11.4 hours of daily sunshine, perfect for a sunny trip. November, the least sunny month, still offers a generous 7.7 hours of sun despite this cloudier / rainier time of the year.

Average percent of sunshine

On average the sun shines 85% of the time during the day in April, the highest percentage of any month. November has the lowest percentage at 70%.

Florida Keys enjoys an average of 3412 hours of sunshine annually. Let’s compare this with some popular tourist destinations:

In Barcelona, Spain, there are 2530 hours of sunshine annually and is a city that can be visited year-round.

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

Boston, USA, enjoys 2629 hours of sunshine annually, with distinct seasons and many bright, sunny days.

In Brisbane, Australia, the annual sunshine averages 2999 hours, making it one of Australia’s sunniest cities.

September, Florida Keys’s wettest month, receives 159 mm (6.3 in) of rainfall and has a maximum daytime temperature of 31°C (88°F). During the driest month March you can expect a temperature of 26°C (79°F).

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