Monarch Butterflies in New Mexico in September

Yes, September is one of the best months to see monarch butterflies in New Mexico. It is the 2nd busiest month of the year, with 199 of the 856 sightings logged across the year (23.2%), 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.

Migratory Monarch photographed in New MexicoMonarch photographed in New MexicoMonarch photographed in New Mexico
Photos by iNaturalist observers, used under Creative Commons.

Peak month for monarch butterflies in New Mexico

23.2%

of yearly sightings

199

records in September

#2

busiest month of 12

856

verified records a year

August 29.4%, September 23.2%, October 17.8%. Busiest month is August at 29.4%.

Best months: August, September, October

856 verified observations of monarch butterflies in New Mexico, recorded across 10 months of the year on iNaturalist.

When monarch butterflies are recorded in New Mexico

Peak month

August

252 records (29.4% of the year)

Quietest month

January

No verified records

MonthObservationsShare
January00%
February00%
March111.3%
April323.7%
May182.1%
June435%
July12314.4%
Augustpeak25229.4%
Septemberpeak19923.2%
Octoberpeak15217.8%
November232.7%
December30.4%

Monarch Butterflies you are most likely to see

SpeciesVerified observations
Monarch856

In New Mexico, September carries 23.2% of the year's monarch butterflies sightings, about 14.9 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 (29.4%) into September, and it heads toward October (17.8%) 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 New Mexico 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

  • Monarch856 records
Plan your tripBandelier National Monument

Plan your monarch butterfly trip in New Mexico

Start with live tours near Bandelier National Monument, 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 New Mexico in September?+

Yes. September accounts for 199 of the 856 verified monarch butterflies sightings logged in New Mexico across the year, which is 23.2% of the annual total.

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

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

What month is best for monarch butterflies in New Mexico?+

August is the single busiest month, with the broader peak running through August, September and October, based on 856 verified observations.

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

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