A personal watercraft in Delaware is off the water for about 6 months a year at Wilmington, and the median first 32°F night arrives November 1 at Wilmington (NOAA 1991-2020). 13 jet ski & PWC storage facilities are listed in Delaware, 13 with indoor or climate-controlled space.
| Month | Wilmington high / low | personal watercraft | Wilmington snow | Georgetown high / low | personal watercraft |
|---|---|---|---|---|---|
| Jan | 41° / 26° | off the water | 6.1 in | 45° / 29° | off the water |
| Feb | 44° / 27° | off the water | 7.8 in | 48° / 30° | off the water |
| Mar | 53° / 34° | off the water | 3.1 in | 55° / 36° | off the water |
| Apr | 64° / 44° | off the water | 0.1 in | 66° / 45° | wetsuit weather |
| May | 74° / 53° | wetsuit weather | 0.0 in | 75° / 55° | wetsuit weather |
| Jun | 82° / 63° | on the water | 0.0 in | 83° / 64° | on the water |
| Jul | 87° / 68° | on the water | 0.0 in | 88° / 70° | on the water |
| Aug | 85° / 67° | on the water | 0.0 in | 86° / 68° | on the water |
| Sep | 79° / 59° | on the water | 0.0 in | 80° / 61° | on the water |
| Oct | 67° / 47° | wetsuit weather | 0.0 in | 69° / 49° | wetsuit weather |
| Nov | 56° / 37° | off the water | 0.2 in | 59° / 40° | off the water |
| Dec | 46° / 30° | off the water | 2.9 in | 50° / 33° | off the water |
Jet Ski column rule: on the water from a 76°F high; wetsuit weather from 66°F; off the water below.
By that rule a personal watercraft at Wilmington has 4 months on the water (June to September), 2 of wetsuit weather and 6 off the water. By that rule a personal watercraft at Georgetown has 4 months on the water (June to September), 3 of wetsuit weather and 5 off the water.
Delaware freezes in short spells: Wilmington has about 91.6 freezing nights but only 13.6 days that stay below 32°F, and those overnight freezes are what crack a personal watercraft that was not drained.
13 live listings in 9 cities; by listed type: 13 indoor, 13 covered and 13 outdoor (types overlap). No Delaware jet ski & PWC storage listing publishes a rate on StowHelp.
| Facility | City | Listed storage | Listed amenities | Also listed for |
|---|---|---|---|---|
| Sentinel Self Storage - Newark | Newark | indoor, outdoor, covered | Boat | |
| Seaford Mini Storage | Seaford | indoor, outdoor, covered | Boat | |
| DEStorage - Rehoboth | Rehoboth Beach | indoor, outdoor, covered | Boat | |
| Secure Storage Dover | Dover | indoor, outdoor, covered | Boat | |
| Storage Solutions - All-Climate Self Storage | Rehoboth Beach | indoor, outdoor, covered | Boat | |
| Reybold Lifestyle Self Storage - Christiana | Christiana | indoor, outdoor, covered | Boat | |
| DE Storage - Milford | Milford | indoor, outdoor, covered | Boat | |
| Delmarva RV Center - Seaford | Seaford | indoor, outdoor, covered | Boat |
| City | Jet Ski & PWC Storage listings | Indoor | Climate-controlled | Outdoor |
|---|---|---|---|---|
| Dover | 2 | 2 | 0 | 2 |
| Newark | 2 | 2 | 0 | 2 |
| Rehoboth Beach | 2 | 2 | 0 | 2 |
| Seaford | 2 | 2 | 0 | 2 |
| Christiana | 1 | 1 | 0 | 1 |
| Milford | 1 | 1 | 0 | 1 |
| Milton | 1 | 1 | 0 | 1 |
| Smyrna | 1 | 1 | 0 | 1 |
| Wilmington | 1 | 1 | 0 | 1 |
NOAA's 1991-2020 median first 32°F night is November 1 at Wilmington and November 6 at Georgetown; winterize by October 18, two weeks ahead of the earlier date. By our personal watercraft rule Wilmington stays on the water through September and Georgetown through September, then 2 months of wetsuit weather follow at Wilmington. 13 Delaware listings offer indoor or climate-controlled space.
6 at Wilmington (October to May) and 5 at Georgetown (October to May), plus 2 and 3 months of wetsuit weather. Those off the water months hold 20.2 of the 20.2 inches of snow Wilmington averages a year (100%), which is the load on a cover or carport roof. At Wilmington a personal watercraft is on the water from June to September (4 months), against 4 at Georgetown.
Of 13 live Delaware listings, 13 list indoor space and 0 climate-controlled units, against 13 outdoor and 13 covered. By city: Dover (2 listed, 2 indoor), Newark (2 listed, 2 indoor), Rehoboth Beach (2 listed, 2 indoor) and Seaford (2 listed, 2 indoor). Most indoor listings: Dover (2), Newark (2) and Rehoboth Beach (2). Ask whether indoor means heated; listings span 9 cities in all.
At Wilmington, 3 months average a low at or below 32°F, all of them off the water months by our personal watercraft rule. Wilmington logs 91.6 nights at or below 32°F and 0.1 at or below 0°F a year; January, the coldest month, averages 25.6°F and is off the water for a personal watercraft.
After the last frost. The median last 32°F night is April 7 at Wilmington and April 4 at Georgetown; the last 28°F hard freeze comes around March 27 and March 23. Our rule makes June the first month on the water at Wilmington and June at Georgetown. That month Wilmington averages a 63.0°F low and a 82.2°F high. Reverse each winterization step first.
Delaware jet ski & PWC storage listings span 9 cities, led by Dover (2 listed), Newark (2 listed), Rehoboth Beach (2 listed), Seaford (2 listed) and Christiana (1 listed). For outdoor winter parking, Dover (2 outdoor) and Newark (2 outdoor) lead. Statewide, 13 list outdoor, 13 covered and 13 indoor or climate-controlled spaces. Compare the cities nearest you before November 1.
NOAA NCEI Climate Normals 1991-2020 (USW00013781, USW00013764); NOAA AOML hurricane impacts 1851-2025; StowHelp listings 2026-10-07 (methodology).