May in Nature: What to Look For Across the U.S.
Happening nowMay is peak songbird migration for most of the U.S. — warbler waves crest from the mid-latitudes north, and hummingbirds complete their journey, reaching Minnesota and North Dakota by mid-May. Northern woodlands hit peak spring bloom while southern meadows shift toward early summer. The Eta Aquariid meteor shower peaks May 6 but fights a bright moon this year.
Data updated: August 2026Sources & method · Corrections
May is the month birders plan their year around. Songbird migration crests across the middle and northern United States — on the right morning after south winds, a city park from Ohio to Massachusetts can hold twenty warbler species in full breeding color, and the famous migration hotspots (Magee Marsh on Lake Erie, Point Pelee's U.S. neighbors, coastal Texas early in the month) see the year's biggest crowds of birds and people alike. By mid-May the last arrivals — flycatchers, cuckoos, nighthawks — complete the cast, and hummingbirds reach the far northern tier, Minnesota and North Dakota, finishing a journey that started at the Gulf in March. The green wave runs the same direction: northern woodlands get their ephemeral wildflower peak in May, weeks after the mid-latitudes, while southern states hand off to early-summer meadow bloom. Lilacs, wild cherries, and serviceberries flower somewhere in the country all month. By Memorial Day, migration is essentially over, every breeding bird is on territory, and the dawn chorus is as loud as the year gets — June's show, arriving early.
Bird migration
The year's peak: warbler migration crests through the mid-latitudes in early May and the northern states by mid-month, joined by tanagers, orioles, grosbeaks, thrushes, and the late-arriving flycatchers. Shorebirds stage a parallel spectacle — late May on Delaware Bay, timed to horseshoe crab eggs, is one of the hemisphere's great migration events. Hummingbirds reach Minnesota and North Dakota by mid-May. By the last week of the month, southbound is the only direction left to wait for.
What's blooming
Northern woodlands take their turn at peak: trillium carpets in the Upper Midwest and New England, lady's slippers, and flowering serviceberry and cherry. Mid-latitude meadows begin the shift to summer — golden Alexanders, penstemons, early coreopsis — while the South moves into full early-summer bloom. Prairie wildflower season opens in earnest on the Plains. There is no week of May without a peak somewhere.
In the night sky
The Eta Aquariids — debris from Halley's Comet — peak around May 6, best in the hour before dawn and noticeably better the farther south you live. This year a bright gibbous moon washes out all but the stronger meteors, making it a marginal show outside the southernmost states. The gentler pleasure of May nights is the arrival of the summer evening sky: by late month, the Summer Triangle clears the eastern horizon at a civilized hour.
In the garden
Frost season ends across most of the country in May, and the warm-season garden goes in — tomatoes, peppers, squash, beans — on a schedule that sweeps north through the month. It's prime container and pollinator-garden planting everywhere, and the best single month to watch native plantings earn their keep as migration passes through them. Southern gardens are already harvesting; northern ones are just clearing their last-frost dates by Memorial Day.
The May sky, 2026
The moon in May: New moon May 16 · Full moon May 1 · Full moon May 31. Darkest skies fall around May 11–May 21, near the new moon.
Meteor showers peaking in May:
| Meteor shower | Peak | Meteors/hr | Moon | Best time |
|---|---|---|---|---|
| Eta Aquariids | May 6 | 50 | 83% gibbous | pre-dawn (better in the South) |
May in every state
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