Hot Springs in Delaware: Why There Are None, and Where to Soak

The reason there are no hot springs in Delaware lies in the rock beneath it. Here is the geology, how far the nearest natural hot springs are from Wilmington and Dover, and the two Rehoboth Beach inns with hot tubs.

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Rehoboth Avenue shops 3
Photo: APK, CC BY-SA 4.0

Soaking in Delaware: key facts

Almost all of Delaware sits on loose coastal sediments with no deep faults to bring warm water up; the hot tubs are at the beach.

Nearest hot springs
Bath County, Virginia, about 240 miles from Dover
Where to soak
Inn spas in Rehoboth Beach
Under most of the state
Coastal Plain sediments, 94% of the land
Natural hot springs
None
Listed here
2 places

Are there hot springs in Delaware?

No. No natural hot springs reach the surface in Delaware. Most of the state lies on the Atlantic Coastal Plain, layers of sand, silt and clay where groundwater stays at ordinary temperature, and the USGS records no appreciably warm springs on the Coastal Plain.

The nearest natural warm soak is in Bath County, Virginia, about 240 miles from Dover in a straight line. In Delaware itself, two inns in Rehoboth Beach have indoor hot tubs and spas.

Nearest hot springs to Wilmington and Dover

Virginia's Bath County is the obvious target: it is under 300 miles from anywhere in the state.

FromNearest hot springs (straight line)Next nearest
WilmingtonBath County, Virginia260 milesHot Springs, North Carolina, 480 milesHot Springs, Arkansas, 1,030 miles
DoverBath County, Virginia240 milesHot Springs, North Carolina, 460 milesHot Springs, Arkansas, 1,020 miles

Dover is slightly closer than Wilmington. North Carolina's hot springs are roughly twice as far, and everything beyond is a flight rather than a drive.

Why Delaware has no hot springs: the rocks underneath

Delaware has two kinds of ground. North of the Fall Line, which runs roughly through Newark and Wilmington, the hard, ancient rock of the Piedmont is at the surface. South of it, unconsolidated sediments of the Coastal Plain cover about 94 percent of the state and thicken toward the ocean.

Those sediments are layers of sand, gravel, silt and clay laid down by the sea and by rivers, much of it beach, dune and marsh deposits. Water moves through them slowly and stays close to the average temperature of the ground, which is why Delaware's wells and springs run cool.

Warm springs in the eastern US need something different: rainwater that sinks thousands of feet into folded rock, heats up with depth and then rises quickly along faults. That happens in Bath County, Virginia, and Berkeley Springs, West Virginia. Delaware's flat, soft ground has nothing like it.

Delaware spas

Two inns near the Rehoboth Beach boardwalk with indoor hot tubs and spa treatments.

  • Inn spa

    Avenue Inn & Spa

    Rehoboth Beach

    A boutique inn steps from the boardwalk with a spa, indoor saltwater pool, hot tub and steam room.

  • Inn spa

    The Bellmoor Inn and Spa

    Rehoboth Beach

    A day spa, an outdoor family pool and an indoor hot tub, a block from Rehoboth Avenue.

Delaware spas on a map

All 2 places on this page, with pin shapes showing the type. Open the larger map to zoom in.

Spring site Inn spa Heated pool

Questions about soaking in Delaware

Are there hot springs near Wilmington, Delaware?

No. The nearest are in Bath County, Virginia, about 260 miles away in a straight line, and then Hot Springs, North Carolina, about 480 miles away.

Why doesn't Delaware have hot springs?

About 94 percent of the state sits on loose Coastal Plain sediments. There are no deep faults to carry heated water back up, so groundwater stays cool.

Are there any warm springs in Delaware?

No. Neither NOAA's list of US thermal springs nor the USGS records any in the state.

Where can I use a hot tub in Delaware?

The Avenue Inn & Spa and the Bellmoor Inn and Spa, both in Rehoboth Beach, have indoor hot tubs.

What is the Fall Line in Delaware?

The boundary where the hard rock of the Piedmont dips under the sediments of the Coastal Plain, roughly along a line through Newark and Wilmington.

Seasons, costs and access in Delaware

When to go

The hot tubs are indoors, so any season works. Rehoboth is quietest, and cheapest, outside the summer beach season.

What it costs

Both inns are overnight stays with spa services priced separately. Check whether the hot tub is open to day spa guests or only to hotel guests.

Getting there

Rehoboth Beach is on the Atlantic coast in Sussex County, about 40 miles south-east of Dover. Both inns are within a short walk of the boardwalk.

Safety and etiquette

Hot tub courtesy at a beach inn.

  • Rinse off sand firstShower before you get in; sand and sunscreen clog filters and cloud the water.
  • Keep it at 104°F or belowThat is the CPSC's upper limit for hot tubs; lower is better for children and after a day in the sun.
  • Soap up after the tubA soap shower afterwards, as the CDC advises, helps prevent hot tub rash.

Pictures of places to soak in Delaware

Photos of Avenue Inn & Spa, a place to soak in this guide. We only use photos whose license allows reuse and credit the photographer under each one. The full credits are on our photo credits page.

Sources

Information here was checked on against the sources below.

Other states with hot springs

Every other state with a hot springs guide.