How Do You Winterize a Jet-Ski for Storage?
Sep 4, 2026 / Public Storage
Winterize a jet ski by cleaning and drying the personal watercraft, following the owner’s manual for water drainage and cooling-system flushing, preparing the fuel system as directed, and checking the battery, trailer, and cover. The exact process depends on the PWC model, engine, local climate, and storage period.
Follow manufacturer instructions for all maintenance steps. Do not store fuel, oil, fuel stabilizer, fogging products, cleaning chemicals, wet gear, or other hazardous materials in a storage unit.
Jet Ski Winter Storage Essentials:
- Review the PWC owner’s manual before beginning winterization.
- Rinse off salt, sand, algae, and debris after the final use of the season.
- Clean and dry the exterior, seat, storage compartments, and trailer fully.
- Follow manufacturer instructions for draining excess water and flushing the cooling system.
- Follow model-specific guidance for fuel preparation and fogging.
- Review battery removal, disconnection, or maintenance instructions.
- Inspect the trailer, tires, lights, straps, and visible hardware before storage.
- Use a fitted, breathable cover after the PWC is clean and dry.
- Keep life jackets, ropes, and other gear clean and dry in separate labeled containers.
- Confirm storage eligibility, value limitations, dimensions, and vehicle requirements before reserving a space.
Jet Ski Winter Storage at a Glance:
How Should You Clean a Jet Ski Before Storage?
Clean a jet ski before storage by rinsing it with fresh water, removing salt, sand, algae, and debris, and drying the watercraft fully. Pay attention to the hull, seat, footwells, storage compartments, intake area, and trailer.
Use this process:
- Rinse the PWC with fresh water after the final outing.
- Wash exterior surfaces according to manufacturer guidance.
- Remove debris from accessible areas.
- Open storage compartments and let them dry fully.
- Dry the exterior and trailer before covering the PWC.
- Check for visible wear, leaks, or maintenance needs.
Do not put away a wet PWC or wet riding gear.
How Do You Drain Water From a Jet Ski?
Drain water from a jet ski by following the process in the owner’s manual. The correct steps can vary by model, engine, exhaust design, and cooling system.
Some models may require a specific storage position or manufacturer-approved process to remove water from the exhaust system. Do not run the engine out of the water unless the owner’s manual specifically directs you to do so.
How Do You Flush a Jet Ski Before Winter Storage?
Flush a jet ski according to the manufacturer’s instructions, especially after use in salt water. Flushing can remove salt, sand, and debris from the cooling system before long-term storage.
Follow the manual for:
- Compatible flush kits or hose connections
- The correct sequence for water and engine operation
- Recommended flushing duration
- Engine and water shutoff order
- Post-flush drainage steps
Complete flushing and maintenance in an appropriate location, not inside a storage unit.
How Should You Prepare Jet Ski Fuel for Winter Storage?
Prepare jet ski fuel for winter storage by following the owner’s manual and any fuel-product instructions for the specific model. Some manufacturers may recommend a fuel stabilizer or another preparation method for longer storage periods.
Do not bring fuel, fuel stabilizer, oil, or related products into a storage unit. Complete fuel-system preparation before moving the PWC into a storage space.
Should You Fog a Jet Ski Engine?
Fogging may be part of the manufacturer’s winterization process for some jet ski engines. The correct process can vary by model and engine type.
Review the owner’s manual before using fogging products. Follow the manufacturer’s procedure or consult a qualified personal-watercraft service professional.
Should You Remove a Jet Ski Battery for Winter Storage?
Follow the owner’s manual for battery storage guidance. Some manufacturers may recommend disconnecting or removing the battery during extended storage.
If you remove the battery, store it at home in an appropriate location and follow manufacturer guidance for charge maintenance. Do not use a battery maintainer at a storage space unless the location specifically confirms it is allowed.
Should You Cover a Jet Ski During Storage?
Use a fitted, breathable cover after the jet ski is clean and fully dry. A cover can limit dust and debris while allowing airflow around the PWC.
Avoid rough tarps or non-breathable coverings that can hold moisture against the seat, hull, and components. Check the cover periodically to confirm it remains in place.
How Should You Prepare a Jet Ski Trailer for Storage?
Prepare a jet ski trailer by cleaning it, checking the tires, and reviewing straps, lights, hitch components, and visible hardware. Keep the PWC supported on its trailer or another manufacturer-approved stand.
Before storage:
- Check tire condition and pressure.
- Inspect lights and visible wiring.
- Review straps and tie-down points.
- Check the hitch and trailer hardware.
- Confirm the PWC is supported according to manufacturer guidance.
- Keep the trailer and PWC clean and dry.
What Storage Space Does a Jet Ski Need?
The storage space needed for a jet ski depends on the full dimensions of the PWC, trailer, cover, and any attached accessories. Measure the full length, width, and height before comparing available spaces.
Include:
- Trailer tongue
- Handles and mirrors
- Bumpers
- Covers
- Rear platforms
- Other exterior accessories
Use the Public Storage size guide to compare available storage dimensions. Confirm with the selected location that the space fits the PWC and trailer and that the vehicle meets eligibility and value requirements.
Can Public Storage Store a Jet Ski?
Vehicle storage may be available at select Public Storage locations for eligible personal watercraft and trailers. Availability, space types, dimensions, access hours, rental terms, vehicle requirements, and item limitations vary by location.
Contact the selected Public Storage location before reserving to confirm whether the PWC and trailer are eligible. Do not store a jet ski or trailer that exceeds applicable rental-agreement value limitations.
How Should You Store Jet Ski Gear Between Seasons?
Store clean, dry life jackets, ropes, covers, and other permitted gear in separate labeled containers. Group items by activity so they are easier to retrieve for the next season.
Use labels such as:
- Jet Ski Ropes and Accessories
- PWC Safety Gear
- Water Recreation Equipment
- Trailer Accessories
- Summer Water Gear
Do not store wet gear, fuel containers, cleaning products, food, or other prohibited items.
Prepare Your Jet Ski for the Next Season.
Winterizing a jet ski starts with a clean, dry PWC and a manufacturer-approved maintenance plan. Follow the owner’s manual for flushing, drainage, fuel preparation, battery care, and engine storage, then inspect the trailer and use a breathable cover.
Find a Public Storage location near you to compare eligible vehicle storage spaces for a qualifying PWC and trailer. Confirm dimensions, requirements, and rental terms before reserving.
A clear winterization plan can make the next warm-weather ride easier to prepare for.
Jet Ski Winter Storage FAQs
How do you winterize a jet ski for storage?
Clean and dry the PWC, follow the owner’s manual for drainage and flushing, prepare fuel and battery systems as directed, inspect the trailer, and use a fitted breathable cover.
Should you flush a jet ski before winter storage?
Follow the owner’s manual. Many PWCs require cooling-system flushing before extended storage, especially after salt-water use.
Should you remove a jet ski battery for winter?
Follow manufacturer guidance. Some models may require battery removal or disconnection for extended storage.
What should you do with jet ski fuel before storage?
Follow the owner’s manual for fuel-system preparation. Do not store fuel, fuel stabilizer, oil, or hazardous materials in a storage unit.
Can you store a jet ski at Public Storage?
Eligible personal watercraft and trailers may qualify for vehicle storage at select Public Storage locations. Confirm availability, dimensions, vehicle requirements, and rental-agreement limitations with the selected location before reserving.
