Every month in Key West brings different fish, different patterns, and different opportunities. Understanding seasonal migration and behavior is the key to consistent success. This comprehensive guide breaks down what bites when, so you can plan the perfect charter.
Winter Season: December – February (Peak)
Water Temp: 70–74°F
Conditions: Clear, crisp, calm mornings
Target Species: Permit, tarpon, bonefish, mutton snapper, cobia
This is the absolute best season. Cold water triggers aggressive feeding across all species. Permit school on flats in massive numbers. Tarpon are abundant in deeper channels. Mutton snappers stack on reefs. Visibility is exceptional.
Book early—January and February are fully booked months. A private charter with Captain Dane guarantees personalized attention during peak demand.
Spring Season: March – May (Excellent)
Water Temperature Rise: 76–82°F by late May. This transition period is magic.
April spawning run: Tarpon begin their legendary migration. Kings arrive. Grouper are extremely active on wrecks. Mackerel show up in large schools. Night fishing for permit becomes exceptional.
- March: Permit still strong; tarpon ramping up; grouper spawning begins
- April: Prime tarpon rolling; kings aggressive; mackerel everywhere
- May: Deeper water fishing; jacks and large predators active
Summer Season: June – August (Hot but Fishable)
Summer (82–86°F) shifts the bite deeper. The shallow flats slow, but reef and wreck fishing excel. Afternoon thunderstorms are common—plan for early morning and late afternoon charters.
What bites: Grouper (reef), snapper (deep structure), tarpon (deeper channels), mackerel, permit (night fishing).
Many experienced anglers consider summer the "second best" season due to excellent night fishing opportunities and less crowded reefs. Bring plenty of sunscreen—you'll burn quickly.
Fall Season: September – November (Recovery)
September can be rainy, but October and November are exceptional. Water cools from 82°F to 74°F, triggering new feeding patterns.
- September: Rainy but doable; grouper and snapper strong; avoid peak heat
- October: Water cools; permit return; tarpon move shallow; excellent visibility
- November: Prime permit season resumes; water clarity improving daily; comfortable fishing conditions
November is often overlooked but rivals January for consistent success. Plan a fall trip and experience world-class fishing without massive crowds.
Seasonal Target Species Guide
| Species | Best Months | Depth | Technique |
|---|---|---|---|
| Tarpon | April–May, Sept–Oct | 5–40ft | Live bait, spinning |
| Permit | Jan–Feb, Oct–Nov | 2–15ft | Sight fishing, fly |
| Bonefish | Nov–Feb | 1–8ft | Sight fishing, fly |
| Grouper | Year-round (closed June–Aug) | 30–80ft | Wreck fishing, live bait |
| Snapper | Year-round | 40–100ft | Reef/wreck fishing |
| Mackerel | April–May, Sept–Nov | 20–50ft | Casting, live bait |
| Cobia | March–May | 20–50ft | Live bait, casting |
| King Fish | April–June | 30–80ft | Trolling, live bait |
Water Temperature & Fish Behavior
Water temperature directly impacts fish behavior. Cooler water (70–76°F) triggers aggressive feeding. Warm water (82–86°F) makes fish sluggish and deeper. Here's how it affects your fishing:
- 70–74°F: Aggressive feeding; shallow water active; optimal conditions
- 76–80°F: Good but transitional; some shallow action, some deep action
- 82–86°F: Sluggish; fish go deep; early morning and late afternoon best
Moon Phases Matter Too
Beyond seasons, moon phases influence tidal ranges and feeding windows:
- Full & New Moon (Spring Tides): Dramatic tidal swings trigger aggressive feeding. Book these dates.
- Quarter Moons (Neap Tides): Minimal tidal movement; fishing can be slower but still productive
Planning Your Perfect Seasonal Charter
Match your charter date to your target species and preferred conditions:
- Want trophy tarpon? Book April–May or September–October
- Want relaxed permit fishing? January–February or October–November
- Want reef & wreck fishing? June–August or year-round
- Want consistent success? January or November
Book Your Seasonal Charter
Captain Dane customizes every charter to seasonal patterns and your target species.
Book Now