When Does Fall Really Start? 2026 Equinox and Daylight Changes in Florida

If you’ve been watching the clocks and wondering why the evenings still feel like summer, you’re not alone. Florida’s sun has been generous, breaking heat records even as the calendar hints that something else is coming.

According to the Climate Prediction Center, above‑average temperatures will linger well into November, so don’t be surprised if a cool breeze takes its time arriving. But the days are definitely getting shorter—after the summer solstice the sun’s path starts to dip, and the night hours creep upward.

That brings us to the big question: when does fall actually start? The answer depends on which definition you prefer.

Meteorological fall is the simpler, data‑friendly version. Meteorologists slice the year into neat three‑month blocks that line up with temperature patterns. By that rule, autumn began on September 1 and will run through November 30.

Astronomical fall follows the Earth’s tilt and its dance around the sun. The official start is the autumnal equinox, when day and night are roughly equal. In 2026 the equinox occurs at 8:05 p.m. Eastern Time on September 22.

So, depending on your calendar, fall either started three weeks ago or will kick off later this month.

What does that mean for daylight? On September 8, Miami enjoys about 12 hours and 28 minutes of sunshine, while Tallahassee gets a hair more—around 12 hours and 33 minutes. By the equinox on September 22, those numbers dip to roughly 12 hours and 7 minutes in Miami and 12 hours and 8 minutes up north.

Looking ahead to the winter solstice on December 21, the shortest day of the year, Florida will see daylight shrink to just over 10 hours. Miami will have about 10 hours 31 minutes of sun, and Tallahassee about 10 hours 10 minutes.

Now, about those clock changes. Unless Congress passes the Sunshine Protection Act (and a president signs it), daylight‑saving time ends at 2 a.m. local time on November 1, when clocks fall back an hour.

If daylight‑saving time were made permanent, the amount of daylight wouldn’t change—only when it occurs would shift. In that scenario, Florida’s mornings in winter would be darker, with sunrise sometimes slipping past 8 a.m., while evenings would stay brighter. The opposite would happen with permanent standard time: sunrise would happen an hour earlier, but evenings would dim sooner.

To recap the seasonal calendars for 2026:

• Meteorological seasons:
  Spring – March 1 to May 31
  Summer – June 1 to August 31
  Fall – September 1 to November 30
  Winter – December 1 to February 28/29
• Astronomical seasons:
  Vernal equinox – March 20
  Summer solstice – June 21
  Autumnal equinox – September 22
  Winter solstice – December 21

The two systems differ because one follows temperature trends (meteorological) and the other follows Earth’s orbital geometry (astronomical). Both have their uses—meteorologists like the neat month blocks for comparing data, while astronomers care about the sun’s position relative to the equator.

So whether you’re setting your backyard grill for a “late‑summer” dinner on September 5 or planning a cozy pumpkin‑spice night for after the equinox, you now have the dates and daylight details you need.