Based on 4,283 research-grade iNaturalist observations in Texas, Great Purple Hairstreak is most often recorded in October; in Texas it behaves like a spring and fall migrant. It ranks #50 among butterflies recorded in the state in our data.
Atlides halesus
Great Purple Hairstreak in Texas by month
Bars show research-grade observations per month. They mix true seasonality with how often people are outdoors, so treat small numbers with caution.
Also seen in Texas in October

Monarch

Gulf Fritillary

Queen

Fiery Skipper

Gray Hairstreak

Common Buckeye

Pipevine Swallowtail

American Snout
Places to look in Texas
Dinosaur Valley State Park
San Antonio Botanical Garden
Garner State Park
State ParkBrazos Bend State Park
Pedernales Falls State Park
Enchanted Rock State Natural Area
FAQ
When does Great Purple Hairstreak appear in Texas?
Mainly September–November, with the most records in October.
How common is Great Purple Hairstreak in Texas?
It ranks #50 by number of iNaturalist observations among butterflies in Texas (4,283 records in our sample).