Key Largo is the first island of the Florida Keys chain that tourist encounter when coming down from Miami. And, it is known for a dozen excellent snorkeling dive spots.
Snorkel and weather conditions at the Keys
The summer offers the flattest and clearest water for snorkelers. The downside the summer is also known for its uncomfortably high heat and humidity. In September and October, hurricanes can occur like in 2017. Much got destroyed by Irma here on the keys.
The months from November thru April are much more pleasant, but there can be strong wind and waves which reduce visibility substantially. Cold fronts from Canada with strong winds arrive here in the winter. The temperature drops, and it gets chilly. Also, there can be days where the surf is too high for snorkeling. The worst month with strong winds is January, and it improves in March. The best month for snorkeling is May until Memorial Day. It is still not too hot, water is clearer, and accommodations are not as expensive as in the summertime. September can be a good month as well but consider it’s the hurricane season.
Book your snorkel trip in advance and on a windy day give them a call in the morning to get the tour confirmed: (305) 451 6300
If possible stay at the keys from Monday to Friday and avoid weekends. Weekends are utterly busy, prices for hotels increase and most spots are crowded. The advantage; on weekends guided trips are offered in the John Pennekamp State Park in the morning.
Camping in the John Pennekamp State Park
The popular campground is mainly used by RV’s each of the 45 sites has electricity. The campground provides washing machines and tumblers. If you like to stay here, you have to book 11 months before sharp at 8 in the morning. The alternative; usually sites get canceled shortly before the stay. Check it on Reserve America daily soon before you plan to visit the Keys.
We were forced to look for a motel. There wasn't any affordable campsite available. We stayed at the Conch On Inn for three nights. Luckily, a very comfy bed, WIFI, fridge, coffee machine, BBQ and attentive owners. Great value for money.
Hotels near the John Pennekamp State Park in Key Largo.
Located at the western end of the Florida Keys, Key West offers a great jumping off point to explore about a dozen great snorkeling spots. The best Key West snorkeling is considered to be:
Snorkel and weather conditions at the Keys
While the water is reliably flat offering good clarity in the summer, the heat and humidity can be absolutely oppressive. In September and October, hurricanes can occur as it did last year in 2017. Much got destroyed by Irma here on the keys.
The months from November thru April are much more pleasant, but there can be strong wind and waves the water clarity drops significantly. Cold fronts from Canada with strong winds arrive here in the winter. The temperature drops, and it gets chilly. Also, there can be days where the surf is too high for snorkeling. The worst month with strong winds is January, and it improves in March. The best month for snorkeling is May until Memorial Day. It is still not too hot, water is clearer, and accommodations are not as expensive as in the summertime.
With convenient ferry boat from Ft Myers, it can be very crowded during the weekends, and of course, Key West has several huge festivals so you'll want to keep their calendar to either avoid them or partake!
If you enjoy snorkeling, the Big Island is one of the best. I'd recommend staying in Kona and check out some of the many snorkeling spots in the area.
Big Island is one of the best places for snorkeling. Although the conditions are good year-round, the perfect season with warmest and excellent water conditions is in the late summer and early fall (August until October).
One of the best spots for snorkeling is the Mount Cook Monument. If you like to hike to this coral reef start early or late. It's pretty busy with tour boats from approximately 10 am until early afternoon. Bring enough water for the hike. Scroll down for more information about the different snorkel spots south of Kona.
Hawaii is a sunny and warm paradise with very little temperature variation throughout the seasons: Big Island Weather Guide. There is even less rain in the drier season from May until October, which makes these months even better for snorkeling. However, it's a tropical climate and some rain can always occur in Hawaii. That's the reason why the islands have a lush and green vegetation. The north and east coast get more rain than south and west which is the leeward side. The area around Kona is often foggy in the summertime.
You'll find the warmest water in late summer / early fall from August through October around 80°F (27°) degrees. It tends to drop by 6-9 degrees during winter. In winter, it’s also a little chilly in the mornings, when it’s a good idea to wear a thin neoprene wet suit top. The winter months from December to March tend to have heavy surf at times.
Seasons - Avoiding the Crowds
Fewer visitors in spring and fall: mid-April to mid-June and September (after Labor Day) to November. However, it's busier during the "Golden Week" in Japan at the end of April until the beginning of May. It gets very crowded when the Ironman takes place in October. Busy and increasing rates in summer (mid-June through August), during Christmas, New Year's Eve (mid-December until mid-January) and on Independence Day.
Bottom Line and Personal Experience
Although some months might not be ideal, you can visit the Big Island year-round for amazing snorkeling tours. Almost perfect months with fewer visitors as well as excellent water conditions are usually September and October. My visit to Hawaii was in September 2011. Kona's weather is often described as "eternal spring". Not too hot, not too cold, with some late afternoon rain showers. If you're lucky, you might get to see a rainbow! Crowds in September were fine although probably a bit higher than normal because it was the week before the big Hawaii Ironman Triathlon event. There were lots of bikers on the road training.