Delaware by month · 9 of 12
Delaware RV rental in September
September falls inside Delaware's best RV window (April to June and September to October).
Mild spring and fall avoid both summer beach crowds and winter chill; coastal areas are pleasant for RVing.
PickRV
Published by PickRV
September on the ground
Weather & conditions
Typical 78°F high / 60°F low
Locals' favorite month — the water holds summer warmth while the crowds vanish. September beach camping is the state's quiet prize.
What to do in September
- Warm-ocean swims without the crowds
- Fall shorebirds moving through the refuges
- Quiet boardwalk evenings
Best-fit rigs: Motorhome · Truck or van
Know before you go
Peak hurricane season for the Atlantic — most days are gorgeous, but watch the tropics.
Hurricanes and nor'easters can affect the coast in late summer and fall. Summer traffic on Route 1 is heavy on weekends.
Seasonal spectacles, sourced
What September looks like in Delaware
Timing windows below are quoted verbatim from each official source — nature shifts year to year, so always check the source before you route a trip around it.
Bird migration
Bombay Hook National Wildlife Refuge
“Spring shorebird peak in May; fall waterfowl building from September, large numbers of Canada & snow geese arriving in October, with the fall waterfowl peak in November”
Smyrna, Kent County, Delaware, on the Delaware Bay shore · RV base: Day-use only — the refuge offers a wildlife drive and trails but no camping. Nearest RV bases are private campgrounds and state-park camping in the Smyrna/Dover area of central Delaware, a short drive west of the refuge.
U.S. Fish & Wildlife Service — Bombay Hook NWR, Species
From the verified event registry
September events in Delaware
No verified large-scale September events in our Delaware registry yet — we only list events we can date and source, never filler. The full calendar tracks what's confirmed.
Delaware events calendarTrip notes
September tips for Delaware
Layer up: shoulder-pattern days can swing from a chilly dawn to t-shirt warmth by afternoon.
Pack rain gear and leveling mats for soft or wet sites.
Carry a weather radio and check forecasts daily — transitional months turn fast.
Daylight shrinks noticeably — plan arrivals before dusk.
Keep planning
Plan the Delaware trip
Nearby & related
Keep planning Delaware
Sourced costs, campground directories, and the places worth a detour — the next layer of Delaware trip planning.