Best Months to Observe Butterflies in Phoenix

Butterflies are most active when it’s warm and when nectar sources are readily available. So what are the best months to observe butterflies in the Phoenix Sonoran Desert?

In Phoenix, Queens, Fiery Skippers and Gulf Fritillaries are usually around all summer. You can expect to see a showing of butterflies in the late winter into Spring, but the biggest show often comes in the months of August, September and October.

Western Pygmy Blue, Oct 25, 2021

The three popular months coincide with Phoenix Monsoon and quite a number of blooming nectar plants. Following are some observations from the 2021/2022 calendar years in Phoenix. Note that 2021 was an amazing banner year for butterflies!

Some October Observations

Large Orange Sulphur
Monarch
Painted Lady
Mexican Yellow
American Snout
Dainty Sulphur
Ceraunus Blue
Orange Sulphur
Western Pygmy Blue
Fiery Skipper
Cloudless Sulphur
Great Purple Hairstreak
Queen
Sleepy Orange
Funereal Duskywing
Echo Azure
Arizona Powdered Skipper
Cloudless Sulphur
Tiny Checkerspot (Pinal County)
California Patch
Empress Leilia
Violet-clouded Skipper
Fatal Metalmark
West Coast Lady
Queen
Eufala Skipper
Northern White Skipper

Some November Observations

Western Pygmy Blue
Reakirt’s Blue
Sleepy Orange
Mexican Yellow
American Lady
Checkered White
Orange Sulphur
Dainty Sulphur
Pipevine Swallowtail
Painted Lady
Common and White Checkered Skippers
Variegated Fritillary
Gray Hairstreak
Queen
American Lady
American Snout
Fiery Skipper
Gulf Fritillary
Gray Buckeye
Monarch
Red Admiral

Some December Observations

Painted Lady
Funereal Duskywing
Gulf Fritillary
Monarch
West Coast Lady
Queen
Gray Buckeye
Mexican Yellow
Dainty Sulphur
Ceraunus Blue

Some January Observations

Gulf Fritillary
Queen
Monarch
Reakirt’s Blue
Queen
American Snout
Painted Lady
West Coast Lady

Some February Observations

Mourning Cloak
American Snout
Gray Hairstreak
Sleepy Orange
Orange Sulphur

Some March Observations

Red Admiral
Western Giant Swallowtail
Funereal Duskywing
West Coast Lady
Great Purple Hairstreak

Some April Observations

Marine Blue
Gray Buckeye
Dainty Sulphur
Echo Azure
Sleepy Orange
Common Checkered Skipper
Juniper Hairstreak
American Snout
Painted Lady

Some May Observations

Cabbage White
Northern White Skipper
Echo Azure
Pipevine Swallowtail
California Patch

Some June Observations

Reakirt’s Blue
Marine Blue
Empress Leilia
Ceraunus Blue

Some July Observations

Fiery Skipper
Queen
Queen Caterpillar
Sleepy Orange
Gulf Fritillary

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