Monarch Butterflies in Kentucky in September

Yes, September is one of the best months to see monarch butterflies in Kentucky. It is the 2nd busiest month of the year, with 873 of the 3,030 sightings logged across the year (28.8%), based on verified iNaturalist records.

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By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated June 28, 2026.

Monarch photographed in KentuckyMonarch photographed in KentuckyMonarch photographed in Kentucky
Photos by iNaturalist observers, used under Creative Commons.

Peak month for monarch butterflies in Kentucky

28.8%

of yearly sightings

873

records in September

#2

busiest month of 12

3,030

verified records a year

August 33.3%, September 28.8%, October 9.5%. Busiest month is August at 33.3%.

Best months: August, September, JulyPeak season right now

3,030 verified observations of monarch butterflies in Kentucky, recorded across 10 months of the year on iNaturalist.

When monarch butterflies are recorded in Kentucky

Peak month

August

1,009 records (33.3% of the year)

Quietest month

January

No verified records

MonthObservationsShare
January00%
February00%
March20.1%
April551.8%
May1304.3%
June2277.5%
Julypeak40513.4%
Augustpeak1,00933.3%
Septemberpeak87328.8%
October2889.5%
November401.3%
December10%

Monarch Butterflies you are most likely to see

SpeciesVerified observations
Monarch3,030

In Kentucky, September carries 28.8% of the year's monarch butterflies sightings, about 20.5 points above an even month-to-month split. That makes it the 2nd busiest of the twelve months, out of 10 months with recorded activity.

Activity is easing off from August (33.3%) into September, and it heads toward October (9.5%) after. This is right inside the peak window, so September is one of the surest months to plan a trip around.

The monarch butterflies most often recorded in Kentucky are Monarch. Those counts are annual totals rather than a September split, so treat them as which species you are likely to encounter, while the month figures above show how many sightings fall in September itself.

Which monarch butterflies you are most likely to see

  • Monarch3,030 records
Plan your tripAbraham Lincoln Birthplace National Historical Park

Plan your monarch butterfly trip in Kentucky

Start with live tours near Abraham Lincoln Birthplace National Historical Park, then compare a nearby stay and a broader wildlife backup before you lock in the trip.

Frequently asked questions

Can you see monarch butterflies in Kentucky in September?+

Yes. September accounts for 873 of the 3,030 verified monarch butterflies sightings logged in Kentucky across the year, which is 28.8% of the annual total.

Is September a good time to see monarch butterflies in Kentucky?+

September is one of the best months. It ranks 2nd of the year and sits inside the peak window of August, September and July.

What month is best for monarch butterflies in Kentucky?+

August is the single busiest month, with the broader peak running through August, September and July, based on 3,030 verified observations.

Which monarch butterflies are you most likely to see in Kentucky?+

The most-recorded species in Kentucky are Monarch, based on all-time iNaturalist counts.