Key West Scuba Diving Calendar (updated 2025)

May marks the start of summer for Key West scuba diving. Hot weather, warm water, and glassy conditions are the norm. Very good visibility is easy to find and many fish are gathering on the reefs for summer spawning activities. It’s a great time of year for beginners to learn to dive. May Weather Outlook […]

Hot and calm is a recipe for great diving and snorkeling for those thinking about doing some Key West scuba diving in June. Calm seas offer very good visibility most of the time and water temps in the 80s make June a great month for nice, warm morning dives. June Weather Outlook Expect June day […]

Key West scuba diving in July is great. Constant water surface temps of 85°F or more mean no chill even on multiple deep dives and visibility is usually very good. Town is jumping with many special events, and lobster mini-season is the last consecutive Wednesday and Thursday in the month. July Weather Outlook July is […]

Change the dog days of summer into Spiny Lobster days by planning some Key West scuba diving in August. Lobster season is in full swing and it’s the perfect time to sample one of the Keys’ best seafood treats. Average surface water temperatures peak at 86°F in mid-August then begin to slowly drop off. Visibility […]

Town quiets down a bit as families get their kids back to school so Key West scuba diving in September is a good way for couples to take a peaceful, fun vacation break. Water temps remain in the pleasant high 80s and apart from a few breezy days, sea conditions and visibility are generally good. […]

The fall transition in Key West brings interesting marine life as big gamefish follow bait schools into warmer waters along the reef. Key West scuba diving in October is fine – surface water temps cool a bit but are still in the comfortable 80s. Visibility depends on sea condition and location but is often very […]

Fall is a lovely time in Key West and Key West scuba diving in November is perfect for divers who don’t like too much heat. It’s rarely windy and seas are mostly calm, with surface water temps still in the high 70s even at the end of the month and visibility mostly good to very […]

Make a mid-winter warm-weather escape with Key West scuba diving in December. Or combine holiday festivities with underwater fun as the island lights up for a partying Christmas and New Year’s season. Clear, sunny skies, water temps in the mid-70s, and many days of good visibility help divers celebrate the season in Key West. December […]

January is comfortable for Key West scuba diving. Air temps are pleasant and surface water temperatures rarely drop below 74°F. Visibility is mostly good to very good, and except for the shortened daylight hours (~10.5 hours), dive conditions are generally favorable. Expect rough seas when cold fronts move through, then warming and calming trends between […]

Key West weather begins warming in February. Air temps are perfect for dive trips and surface water temperatures are constant at about 74°F. Visibility is mostly good to very good. The best sea conditions are generally found in Gulf waters. Cold fronts decrease in intensity. February Weather Outlook February weather is almost perfect in Key […]

Warm spring weather brings inviting dive conditions in March, with surface water temps climbing rapidly to average near 76°F by the end of the month. Visibility is location dependent but mostly good to very good. Some blustery spring weather on the Atlantic can make for rough water days. March Weather Outlook March weather is almost […]

Calm water and warm breezes make it a pleasure to spend April days offshore on Key West’s world-class dive sites. With water temperatures in the high 70s, wetsuits can be left on shore, and the visibility often becomes excellent in April as the spring winds drop. April Weather Outlook April is the start of summer […]