Washington, Northern Virginia, and Maryland each carry their own September. The heat loosens its grip, the calendar fills back in, and the region returns to its rhythm. This is a short, monthly list of what's worth knowing about — not everything happening, just what's worth the calendar space.
Washington, DC
Labor Day Capitol Concert — Labor Day weekend · West Lawn, U.S. Capitol
The National Symphony Orchestra's free Labor Day weekend concert opens the season on the Capitol lawn; no tickets required.
DC JazzFest — September 2–6 · Venues across the District
This year's edition is themed around "The Future of Jazz: America's Next 250 Years," tied to the national semiquincentennial.
DC Bike Ride — Saturday, September 12 · Downtown DC
A car-free 20-mile route through the city, open to riders age three and up, closing with a finish festival.
H Street Festival — Saturday, September 19 · H Street NE
One of the District's largest street festivals, with multiple stages and vendors along the corridor.
WalkingTown DC — September 19–26 · Neighborhoods citywide
A week of guided walking tours covering neighborhood histories, architecture, and themed routes.
Fiesta DC — September 26–27 · Downtown DC
The region's Latino heritage festival and parade, with music, food, and cultural programming across two days.
Washington Nationals home games — September 1–2, 11–13, 15–17, 25–27 · Nationals Park
The Braves, Angels, Phillies, and Mets close out the home schedule, including Roberto Clemente Day on September 15.
Washington Commanders vs. Seattle Seahawks — Sunday, September 27, 1:00 p.m. · Northwest Stadium
The Commanders' only September home game, following road openers at Philadelphia and Dallas.
Northern Virginia
Taste of the Mountains Main Street Festival — Saturday, September 5 · Madison, VA
More than 150 craft and food vendors line Main Street, with live music and a beer and wine tent; admission is free.
World War II Weekend at Rippon Lodge — September 12–13 · Woodbridge, VA
Living-history programming, encampments, and period military displays on the historic grounds.
Mount Vernon Colonial Market and Fair — September 19–20, 9 a.m.–5 p.m. · George Washington's Mount Vernon
Colonial-attired artisans demonstrate eighteenth-century trades across the estate grounds.
Cox Farms Fall Festival Opening Weekend — September 19–20, 10 a.m.–6 p.m. · Centreville, VA
The opening weekend of Northern Virginia's largest fall festival, with slides, hayrides, and the farm's usual sprawl.
Reston Multicultural Festival — Late September · Reston Town Center
A free afternoon of performances, crafts, and food representing the communities that make up Reston; check the date before planning around it.
Maryland
National Hard Crab Derby — September 3–6 · Crisfield, MD
The Eastern Shore's Labor Day weekend institution, with crab races, picking and cooking contests, and a parade.
Maryland Seafood Festival — September 11–13 · Sandy Point State Park, Annapolis
Local seafood, live music, and artisan vendors on the bay, running alongside Skipjack Heritage Days and a Sunday skipjack race.
Annapolis Baygrass Music Festival — September 19–20, from 10 a.m. · Annapolis, MD
Two days of bluegrass, Americana, and roots music across two stages, tied to Chesapeake Bay preservation.
Susquehanna Wine & Seafood Festival — Saturday, September 19 · Havre de Grace, MD
Twenty-plus regional restaurants and food trucks alongside wine pairings, cooking demonstrations, and live music.
Dates and hours above are current as of publication; several venues confirm final details closer to the date, so it's worth a quick check before you plan around any single event.
