Kingfish: water temperature and season

Find the bait. Year round off Palm Beach, a winter fish in the Keys. Anglrithm scores kingfish at reef and offshore spots, on the Atlantic, in the Keys and on the southwest Gulf coast. This page sets out what that score weighs and the cited studies behind it.

Water temperature

Evidence tier Well established

The tagged band for kingfish is 68-80 °F, with most time at 72-78 °F. No tagging study has measured king mackerel time at temperature. A SEDAR working paper presumes kings track water near 22 °C (72 °F), citing a 1973 report, and kings migrating off west-central Florida stay in 20-26 °C (68-79 °F). Barile 2013, SEDAR38-DW-07; Manooch 1979 via ICCAT Manual 2021 (evidence: weak).

The band works in both directions. Fish feed along a dome, rising to an optimum and falling away past it, so water above the band counts against an hour just as water below it does. Outside the band, either way, no hour rates GOOD in the score, and an hour loses more the further out the water is.

Season

Best Nov to Mar, by the score's season weight.

The score's season weight by month, from the studies cited in the species profile; the outlined months are at 90% of its peak or better.

What the score weighs

  • SeasonWell establishedkeeps 100%
  • Water tempWell establishedkeeps 100%
  • WindSmall real effectkeeps 50%
  • Wind directionSmall real effectkeeps 50%
  • SeasSmall real effectkeeps 50%
  • CurrentSmall real effectkeeps 50%
  • LightReal, but localkeeps 100%
  • Wind vs currentSmall real effectkeeps 50%
Why each tier
  • Season: Season is the strongest single predictor in most recreational datasets, because it carries water temperature, migration and spawning together. Shaw et al. 2021, PLOS ONE 16:e0257882.
  • Water temp: Fish are ectotherms, so appetite and digestion track water temperature along a dome: rising to an optimum, then falling away again. Warmer is not simply better. Snook energy demand roughly tripled from 15 to 25 C, and they were more likely to have empty stomachs when the water ran hot. Volkoff & Ronnestad 2020, Temperature 7:307-320. White et al. 2025, Marine and Coastal Fisheries 17:vtaf031, doi:10.1093/mcfafs/vtaf031.
  • Wind: Wind has a measurable effect on fish movement, apparently through dissolved oxygen, but it is small. The larger effect in any personal log is on you: wind decides where you can fish and whether you go at all, so a wind pattern in your own data is at least as likely to be about your choices as about the fish. Milardi et al. 2019, Aquatic Ecology 53:251-263. Shaw et al. 2021, PLOS ONE 16:e0257882.
  • Seas: Sea state mostly decides whether the trip happens and whether you can fish it well. Treat a sea-state pattern in your own log as a fact about your fishing, not about the fish. No direct angling-scale study found; labelled from mechanism.
  • Current: No study we found ties a current speed or direction to catch for any fish in this app. Current decides whether you can hold a bait where you want it and how a drift sets up: off Southeast Florida the Gulf Stream runs fast close to the coast, and deep-drop boats stay under power to hold position. Treat a current pattern as a fact about your fishing more than about the fish. Davis, Cudney & Blankinship 2017, Bulletin of Marine Science 93:539-555. Lerner et al. 2013, Transactions of the American Fisheries Society 142:95-104.
  • Light: Dawn and dusk are well documented as movement and feeding windows for many inshore and coastal species, and the effect interacts with tide rather than standing alone. Viehman & Zydlewski 2017, PLOS ONE 12:e0176405.
  • Wind vs current: Wind blowing against the current stands the seas up: shorter, steeper and more likely to break than the same wind over slack water, which decides how a drift sets up and how long a day stays fishable. That is physics about the water, not evidence about the fish; no study we found ties it to catch. U.S. Coast Pilot 4, Chapter 3 (opposing wind and current on the Gulf Stream: sharply higher, steeper seas that can break; mechanism only). No catch study found.

Each factor's weight is multiplied by its evidence tier: well established and real but local keep all of it, a small real effect keeps half, and a popular belief that is not supported keeps a fifth. Guidance from the studies sits beside the score, never in it.

From the research programs

  • Atlantic and Gulf king mackerel overwinter in the warm east Florida mixing zone near the Florida Current. SEDAR, 2013
  • East coast landings peak in sequence moving south: Volusia in November, Brevard in December, Indian River in January. SEDAR, 2013
  • St. Lucie, Martin and Palm Beach landings peak in May, tied to a run of large egg-bearing kings. SEDAR, 2013The score's season weight for kingfish is one curve for the whole coast: Best Nov to Mar.
  • Landings point to a summer resident king population off every east Florida county in July and August. SEDAR, 2013
  • The historically cold 2010 winter allegedly squeezed the mixing-zone king population; weekly April landings in 2009 and 2010 moved north county by county from Palm Beach. SEDAR, 2013

Findings in our own words from the programs linked, area and season only; cited, not endorsed. None of these lines is in the score.

The studies

  • Keys kingfish peak in winter as Gulf-group fish arrive; SE Florida holds some kingfish year-round.

    SE Florida (Jupiter, Fort Pierce) and Florida Keys · field · full text read

    Sutter FC et al. 1991

  • Panhandle kingfish catch rates tended to drop after very cold winters and rise after warm ones.

    Florida Panhandle (Panama City) · field · full text read

    Fable et al. 1981

  • Per ocean boat trip, east Florida dolphin catch peaks May-June; wahoo and blackfin peak September-December.

    Florida Atlantic coast (MRIP South Atlantic Florida, excludes Monroe County) · agency · agency document

    NOAA Fisheries Marine Recreational Information Program 2025

  • In its first year the Vandenberg drew open-water fish such as amberjack, king mackerel and little tunny before reef species moved in.

    Florida Keys (Key West) · agency · agency document

    Akins 2010

  • In September, red snapper, lane snapper and king mackerel eggs are common on the West Florida Shelf, sorted mainly by water depth.

    West Florida Shelf · field · full text re-read Oct 16, 2026

    Keel et al. 2025

The whole evidence library

Entries read in full text or published by an agency. Entries read only in their abstract are listed on the science page with their numbers withheld.

Where it is scored

Today's score at any of them is free with an account; every fish has a page like this one.

Display only, not for navigation. Every figure here names its source; check the NWS marine forecast and the posted rules before you leave the dock.