Monarch Butterflies in Oregon in August
Yes, August is one of the best months to see monarch butterflies in Oregon. It is the 2nd busiest month of the year, with 141 of the 577 sightings logged across the year (24.4%), 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 Oregon
24.4%
of yearly sightings
141
records in August
#2
busiest month of 12
577
verified records a year
July 23.6%, August 24.4%, September 15.3%. Busiest month is June at 28.4%.
577 verified observations of monarch butterflies in Oregon, recorded across 7 months of the year on iNaturalist.
When monarch butterflies are recorded in Oregon
Peak month
June
164 records (28.4% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 0 | 0% |
| February | 0 | 0% |
| March | 0 | 0% |
| April | 0 | 0% |
| May | 17 | 2.9% |
| Junepeak | 164 | 28.4% |
| Julypeak | 136 | 23.6% |
| Augustpeak | 141 | 24.4% |
| September | 88 | 15.3% |
| October | 28 | 4.9% |
| November | 3 | 0.5% |
| December | 0 | 0% |
Monarch Butterflies you are most likely to see
| Species | Verified observations |
|---|---|
| Monarch | 577 |
In Oregon, August carries 24.4% of the year's monarch butterflies sightings, about 16.1 points above an even month-to-month split. That makes it the 2nd busiest of the twelve months, out of 7 months with recorded activity.
Activity holds steady between July and August, and it heads toward September (15.3%) 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 Oregon 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
- Monarch577 records
Plan your monarch butterfly trip in Oregon
Start with live tours near Crater Lake National Park, then compare a nearby stay and a broader wildlife backup before you lock in the trip.
GetYourGuide
Live tours nearbySee live tours near Crater Lake National Park
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 Crater Lake National Park
Compare hotels, cabins and lodges close to the best monarch butterfly viewing area in Oregon.
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Broader backupBook a monarch butterfly tour in Oregon
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 Oregon in August?+
Yes. August accounts for 141 of the 577 verified monarch butterflies sightings logged in Oregon across the year, which is 24.4% of the annual total.
Is August a good time to see monarch butterflies in Oregon?+
August is one of the best months. It ranks 2nd of the year and sits inside the peak window of June, August and July.
What month is best for monarch butterflies in Oregon?+
June is the single busiest month, with the broader peak running through June, August and July, based on 577 verified observations.
Which monarch butterflies are you most likely to see in Oregon?+
The most-recorded species in Oregon are Monarch, based on all-time iNaturalist counts.
See monarch butterflies in Oregon in other months
More wildlife in Oregon