Monarch Butterflies in Montana in August
Yes, August is one of the best months to see monarch butterflies in Montana. It is the 1st busiest month of the year, with 44 of the 106 sightings logged across the year (41.5%), 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.
Peak month for monarch butterflies in Montana
41.5%
of yearly sightings
44
records in August
#1
busiest month of 12
106
verified records a year
July 36.8%, August 41.5%, September 10.4%. Busiest month is August at 41.5%.
106 verified observations of monarch butterflies in Montana, recorded across 6 months of the year on iNaturalist.
When monarch butterflies are recorded in Montana
Peak month
August
44 records (41.5% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 0 | 0% |
| February | 0 | 0% |
| March | 0 | 0% |
| April | 2 | 1.9% |
| May | 0 | 0% |
| June | 8 | 7.5% |
| Julypeak | 39 | 36.8% |
| Augustpeak | 44 | 41.5% |
| Septemberpeak | 11 | 10.4% |
| October | 2 | 1.9% |
| November | 0 | 0% |
| December | 0 | 0% |
Monarch Butterflies you are most likely to see
| Species | Verified observations |
|---|---|
| Monarch | 106 |
In Montana, August carries 41.5% of the year's monarch butterflies sightings, about 33.2 points above an even month-to-month split. That makes it the 1st busiest of the twelve months, out of 6 months with recorded activity.
Activity is rising from July (36.8%) into August, and it heads toward September (10.4%) after. This is right inside the peak window, so August is one of the surest months to plan a trip around.
The monarch butterflies most often recorded in Montana are Monarch. Those counts are annual totals rather than a August split, so treat them as which species you are likely to encounter, while the month figures above show how many sightings fall in August itself.
Which monarch butterflies you are most likely to see
- Monarch106 records
Plan your monarch butterfly trip in Montana
Start with live tours near Big Hole National Battlefield, then compare a nearby stay and a broader wildlife backup before you lock in the trip.
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Live tours nearbySee live tours near Big Hole National Battlefield
Use the live GetYourGuide widget to compare local departures and activity styles close to the main monarch butterfly viewing area.
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Stay nearbyStay near Big Hole National Battlefield
Compare hotels, cabins and lodges close to the best monarch butterfly viewing area in Montana.
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Broader backupBook a monarch butterfly tour in Montana
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 Montana in August?+
Yes. August accounts for 44 of the 106 verified monarch butterflies sightings logged in Montana across the year, which is 41.5% of the annual total.
Is August a good time to see monarch butterflies in Montana?+
August is one of the best months. It ranks 1st of the year and sits inside the peak window of August, July and September.
What month is best for monarch butterflies in Montana?+
August is the single busiest month, with the broader peak running through August, July and September, based on 106 verified observations.
Which monarch butterflies are you most likely to see in Montana?+
The most-recorded species in Montana are Monarch, based on all-time iNaturalist counts.
See monarch butterflies in Montana in other months
More wildlife in Montana