Admittedly, sunset in the Florida Keys is worth the attention it receives, painting the sky with a palette of creamsicle orange, purple, red and dusty pink. It has inspired countless photos posted to social media, backdropped thousands of weddings and even earned national travel kudos.
 
Why are sunsets so memorable in the Florida Keys? According to Bill Cottrill, who for many years was a specialist at the National Weather Service's Florida Keys forecast office, the right clouds play a major role in making a sunset superlative.
 
"Scattered cumulus clouds toward the horizon can make a very dramatic sunset," Cottrill explained. "As the sun sets, you have it going low enough in the sky to where we get crepuscular rays – the shadows caused by the clouds where they break the sun.
 
"If you add some high cirrus clouds, you get even more drama because cirrus clouds are made primarily of ice, and they add more ice crystals that the sun will reflect off," he advised. "You see the pink and orange upwards off the sun and the ice, and the clouds become colourful – but it's really the sun reflecting or refracting off of the cloud itself."
 
As for the "green flash" that Keys legend says sometimes can be glimpsed at the moment the sun disappears, Cottrill said it's caused by the refraction of light near the horizon on a very clear, cloudless day – and it's so rare that he has never seen it.
 
While the green flash may be elusive, another unique element accompanies the sunset each evening in Key West: a waterfront Sunset Celebration featuring exuberant street performers and local artisans offering handmade wares. People of all ages flock to Mallory Square, the historic pier overlooking Key West Harbour and the Gulf of Mexico, to enjoy the carnival-like atmosphere.
 
The Mallory Square performers offer a spectacle as vivid as the sunset itself. Visitors might encounter acrobats, musicians, dogs and cats doing tricks, jugglers and masters of comic patter – all sharing their talents with the crowds. And no one can overlook iconic tightrope walker Will Soto, who can be seen balanced high above his audience, silhouetted against the orange and crimson splendour of the setting sun.
 
Elsewhere in the Florida Keys, local favourite Marker 88 in Islamorada is famous for its on-the-beach dining, with some of the freshest seafood around complemented by its picture-postcard-perfect pink and purple sunsets. Farther north in Key Largo, Snook’s Bayside Restaurant brings the party to the sunset hour. At this open-air restaurant and tiki bar, sunsets are marked by a horn sounding celebration – and there is not a bad seat in the house as this waterfront eatery was designed to allow every guest to see an ‘Instaworthy’ view of the sunset.
 
Travel to the Florida Keys: Purely America (0844 80 444 80, www.purelyamerica.co.uk) has seven nights in the Florida Keys from £1,299 per person. Valid for travel in February/March 2018, the price includes two nights in Key Largo, three nights in Key West and two nights in Islamorada, return Virgin Atlantic flights from London Heathrow to Miami and car hire for the duration. The price is based on two adults travelling and sharing room-only accommodation with all taxes included.

For more information on the Florida Keys: www.fla-keys.co.uk