
Based on 20,627 research-grade iNaturalist observations in New York, Monarch is most often recorded in August; in New York it behaves like a summer visitor / breeder. It ranks #1 among butterflies recorded in the state in our data.
Danaus plexippus
Monarch in New York 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 New York in August

Silver-spotted Skipper

Black Swallowtail

Zabulon Skipper

Small White

Spicebush Swallowtail

Eastern Tiger Swallowtail

Eastern Giant Swallowtail

Peck's Skipper
Places to look in New York
New York Botanical Garden
Botanical GardenBrooklyn Botanic Garden
Adirondack Park
Queens Botanical Garden
Franklin D. Roosevelt Four Freedoms Park
Planting Fields Arboretum State Historic Park
FAQ
When does Monarch appear in New York?
Mainly July–September, with the most records in August.
How common is Monarch in New York?
It ranks #1 by number of iNaturalist observations among butterflies in New York (20,627 records in our sample).