DiveJourneyDiveJourney

When To Go · Destination Guide

Key Largo

America's first undersea park meets easy reef days and legendary wrecks

Updated Dec 13, 2025 • 12 sources

View On Map

When to go

Best time to visit Key Largo

Key Largo sits in a tropicalmaritime climate with a dry season (roughly December to April) and a wet season (June to October).

Best overall window

December to April

Dry season with lower humidity and more reliable sunshine. Water often feels like 22°C to 26°C.

Outside that window

Wet season heat, afternoon thunderstorms, and hurricaneseason risk. Keep plans flexible and watch forecasts.

Choose your trip style

Start with the overall answer, then switch only when scuba, freedive, snorkel, or topside timing changes the trip in a meaningful way.

Month-by-month planner

The overall row stays visible so you can compare it against the currently selected scope.

BestGoodTradeoffsMore variable
ScopeJanFebMarAprMayJunJulAugSepOctNovDec
Overall
Wildlife goals and seasonal highlights

These do not replace the overall planner. Use them only if a specific animal or event is driving your trip dates.

  • REEF Florida Keys Lionfish Derby and Arts Festival

    Best for Scuba, Freedive, Topside

    Apr

    JanFebMarAprMayJunJulAugSepOctNovDec

    Late April often brings a community lionfish removal competition that culminates at the REEF campus in Key Largo with a public festival, conservation booths, and awards.

  • Spiny lobster mini-season

    Best for Scuba, Snorkel

    Jul

    JanFebMarAprMayJunJulAugSepOctNovDec

    Florida's spiny lobster sport season is the last consecutive Wednesday and Thursday of July each year.

  • Regular spiny lobster season

    Best for Scuba, Snorkel

    Aug to Mar

    JanFebMarAprMayJunJulAugSepOctNovDec

    The regular Florida spiny lobster season runs from early August through March.

  • Sea turtle nesting and hatchlings

    Best for Topside, Snorkel

    May to Oct

    JanFebMarAprMayJunJulAugSepOctNovDec

    Sea turtle nesting season in South Florida generally spans late spring through early fall.

  • Hot-water coral stress and bleaching risk

    Best for Scuba, Snorkel, Freedive

    Jul to Sep

    JanFebMarAprMayJunJulAugSepOctNovDec

    Midsummer sea temperatures can rise into the upper end of the 21°C to 30°C range, increasing coral stress.

Always true for this destination
  • Hurricane season officially runs June 1 to November 30, with peak activity typically midAugust to midOctober.
Seasonal cautions
  • May, Nov: Transition months with warm water and fewer crowds. Conditions can swing between calm seas and early seasonal fronts.
  • Jun to Oct: Wet season heat, afternoon thunderstorms, and hurricane-season risk. Keep plans flexible and watch forecasts.

Built from climate references, access rules, and destination operators. Wildlife timing and route flexibility can shift year to year.