10 butterflies were recorded flying in Hawaii in December in our iNaturalist sample; 0 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.
Top butterflies in December

Gulf Fritillary

Monarch

Western Pygmy-Blue

Large Orange Sulphur
Sleepy Orange

Small White

Fiery Skipper

Red Admiral

Painted Lady

American Lady
All butterflies flying in Hawaii in December
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | Gulf Fritillary | Dione vanillae | Brush-footed Butterflies | 266 | Jan (past peak) |
| 2 | Monarch | Danaus plexippus | Brush-footed Butterflies | 221 | Jan (past peak) |
| 3 | Western Pygmy-Blue | Brephidium exilis | Gossamer-winged Butterflies | 38 | Mar (past peak) |
| 4 | Large Orange Sulphur | Phoebis agarithe | Whites, Yellows, and Sulphurs | 35 | Jan (past peak) |
| 5 | Sleepy Orange | Eurema nicippe | Whites, Yellows, and Sulphurs | 31 | Mar (past peak) |
| 6 | Small White | Pieris rapae | Whites, Yellows, and Sulphurs | 23 | Mar (past peak) |
| 7 | Fiery Skipper | Hylephila phyleus | Skippers | 19 | Jan (past peak) |
| 8 | Red Admiral | Vanessa atalanta | Brush-footed Butterflies | 4 | Jul (past peak) |
| 9 | Painted Lady | Vanessa cardui | Brush-footed Butterflies | 1 | Mar (past peak) |
| 10 | American Lady | Vanessa virginiensis | Brush-footed Butterflies | 1 | May (past peak) |