Monarch Butterflies in Maryland in October
Yes, October is a good month to see monarch butterflies in Maryland. It is the 4th busiest month of the year, with 942 of the 10,370 sightings logged across the year (9.1%), based on verified iNaturalist records.
By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated June 28, 2026.
Good month for monarch butterflies in Maryland
9.1%
of yearly sightings
942
records in October
#4
busiest month of 12
10,370
verified records a year
September 26.6%, October 9.1%, November 0.9%. Busiest month is August at 37.2%.
10,370 verified observations of monarch butterflies in Maryland, recorded across 12 months of the year on iNaturalist.
When monarch butterflies are recorded in Maryland
Peak month
August
3,853 records (37.2% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 5 | 0% |
| February | 6 | 0.1% |
| March | 5 | 0% |
| April | 82 | 0.8% |
| May | 239 | 2.3% |
| June | 690 | 6.7% |
| Julypeak | 1,691 | 16.3% |
| Augustpeak | 3,853 | 37.2% |
| Septemberpeak | 2,763 | 26.6% |
| October | 942 | 9.1% |
| November | 91 | 0.9% |
| December | 3 | 0% |
Monarch Butterflies you are most likely to see
| Species | Verified observations |
|---|---|
| Monarch | 10,370 |
In Maryland, October carries 9.1% of the year's monarch butterflies sightings, about 0.8 points above an even month-to-month split. That makes it the 4th busiest of the twelve months, out of 12 months with recorded activity.
Activity is easing off from September (26.6%) into October, and it heads toward November (0.9%) after. The busiest month is August (37.2%), so if timing is flexible, that window is the safer bet.
The monarch butterflies most often recorded in Maryland are Monarch. Those counts are annual totals rather than a October split, so treat them as which species you are likely to encounter, while the month figures above show how many sightings fall in October itself.
Which monarch butterflies you are most likely to see
- Monarch10,370 records
Plan your monarch butterfly trip in Maryland
Start with live tours near Antietam National Battlefield, then compare a nearby stay and a broader wildlife backup before you lock in the trip.
GetYourGuide
Live tours nearbySee live tours near Antietam National Battlefield
Use the live GetYourGuide widget to compare local departures and activity styles close to the main monarch butterfly viewing area.
Booking.com
Stay nearbyStay near Antietam National Battlefield
Compare hotels, cabins and lodges close to the best monarch butterfly viewing area in Maryland.
Viator
Broader backupBook a monarch butterfly tour in Maryland
Compare guided wildlife tours, boat trips and nature experiences if you want a second travel network beyond the live widget.
Frequently asked questions
Can you see monarch butterflies in Maryland in October?+
Yes. October accounts for 942 of the 10,370 verified monarch butterflies sightings logged in Maryland across the year, which is 9.1% of the annual total.
Is October a good time to see monarch butterflies in Maryland?+
October is the 4th busiest month. It is workable, though August and September is the stronger window for a reliable sighting.
What month is best for monarch butterflies in Maryland?+
August is the single busiest month, with the broader peak running through August, September and July, based on 10,370 verified observations.
Which monarch butterflies are you most likely to see in Maryland?+
The most-recorded species in Maryland are Monarch, based on all-time iNaturalist counts.
See monarch butterflies in Maryland in other months
More wildlife in Maryland