When To Go · Destination Guide
Miami
A city base with national-park shipwrecks and reef diving in every direction
Updated Dec 13, 2025 • 14 sources
When To Go
Season planner for Miami
Miami is a year-round destination, but conditions shift with cold fronts and hurricane season. Water temperatures near Virginia Key average roughly from 22°C in winter to 31°C in late summer. For the calmest mix of seas and comfortable air, many travelers aim for spring and fall shoulder seasons. June through November is the Atlantic hurricane season, so keep schedules flexible and watch marine forecasts.
At A Glance Heatmap
| Activity | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
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Activity Drilldowns
OverallMarch to May & October to November·Crowd:High·Cost:Premium
Ideal: Comfortable weather and improving water. Virginia Key averages rise from about 23°C in March to about 26°C in May, then cool to about 26°C in November.
Plan Carefully: January can be the windiest month for small boats, while July and August are hottest and sit in peak storm season.
If your trip must be stormresilient, prioritize flexible lodging and refundable charters.
ScubaApril to June & September to November·Crowd:Moderate·Cost:Premium
Ideal: Warm water and generally manageable seas. Virginia Key averages run about 24°C in April, about 30°C in September, and about 28°C in October.
Plan Carefully: January and February can be windy, and August combines the warmest water (about 31°C) with peak hurricane risk.
Deeper wrecks and drift dives are often easier to schedule on stableweather weeks.
FreediveApril to June & September to October·Crowd:Moderate·Cost:Premium
Ideal: Warm water and longer calm spells help visibility and surface safety for line work. Expect water around 24°C to 30°C.
Plan Carefully: Winter months bring more wind and cooler water; August has the highest tropical-storm uncertainty.
Freedivers should be strict about floats, flags, and buddy procedure.
SnorkelMay to August & October·Crowd:High·Cost:Premium
Ideal: Warm shallow water for long sessions. Virginia Key averages are about 26°C in May and peak near 31°C in August.
Plan Carefully: Cooler water and more wind-driven chop. Choose protected bays or boat trips that can route around seas.
For shore snorkeling near inlets (like Blue Heron Bridge), the tide window matters more than the month.
TopsideDecember to April·Crowd:High·Cost:Premium
Ideal: Drier, cooler weather for long walks, outdoor dining, and Everglades day trips. Nights can feel cool after sunset, especially with wind.
Plan Carefully: Hot and humid with frequent afternoon thunderstorms. Peak hurricane season overlaps August to October.
Summer travel can still be great if you start early, build in midday shade, and keep a Plan B for rain.
Seasonal Callouts Timeline
Sea turtle nesting season
JanJanFebFebMarMarAprAprMayMayJunJunJulJulAugAugSepSepOctOctNovNovDecDecFlorida's main nesting months are May to October. On Miami and Key Biscayne beaches, respect marked nest zones, keep lights low at night, and give any nesting turtle a wide berth.
Goliath grouper spawning groups on wrecks and ledges
JanJanFebFebMarMarAprAprMayMayJunJunJulJulAugAugSepSepOctOctNovNovDecDecIn South Florida, goliath grouper form spawning groups at consistent sites such as wrecks, rock ledges, and isolated patch reefs during July through September. Expect big fish, loud booming, and busy charters.
Great Goliath Grouper Count
JanJanFebFebMarMarAprAprMayMayJunJunJulJulAugAugSepSepOctOctNovNovDecDecA citizen-science dive event in June that documents goliath grouper on artificial reefs before peak spawning-season movements begin later in summer.
Florida spiny lobster sport season (mini-season)
JanJanFebFebMarMarAprAprMayMayJunJunJulJulAugAugSepSepOctOctNovNovDecDecSouth Florida's short sport season happens in late July and is heavily regulated. If you plan any lobster activity, confirm current dates, licenses, and sanctuary rules with FWC before your trip.