Yes, it’s fine to leave an inflatable paddle board inflated between paddles, as long as you let some air out and keep it somewhere cool, dry and out of the sun. Heat is the real enemy: warm air expands, and a fully pumped board left in a hot car or in direct sun can be pushed past its limit and damage its seams.
Quick answer
- A few days to a week: fine, even close to full pressure, in a cool, shaded spot.
- Weeks or months: let a good amount of air out (manufacturers suggest anything from about 3–5 PSI to about 10 PSI), and check it every few days.
- In the sun or a hot car: drop the pressure. Starboard says to go down to 10 PSI if the board sits inflated in direct sunlight.
- Never store it fully inflated somewhere hot (attic, car, sunny deck) or in a freezing garage.
- Before you paddle: pump it back up to the recommended pressure.
Why heat is the problem
Air expands as it warms up. A board pumped to 15 PSI on a cool morning can climb well above that after a few hours in the sun or in a car. Inflatable boards are built from drop-stitch fabric with glued and taped seams, and too much pressure stresses those seams. That’s how boards end up with leaks, bulges or split seams.
The fix is simple: if the board is going to sit somewhere it could warm up, let some air out first.
How long can you leave it inflated?
Manufacturers are relaxed about this, with a few conditions.
Days to a week. iROCKER says leaving a board inflated for several days up to a week is generally fine if you store it properly. Plenty of people keep their board inflated all summer at a lake house or in a garage, ready to go.
Weeks to months. iROCKER doesn’t recommend long-term storage at full pressure somewhere the temperature isn’t controlled. For warm-season storage in a garage or shed, it suggests deflating to about 3–5 PSI. Red Paddle Co also recommends releasing some pressure if you’re storing the board for a few days or more, then topping it up before you paddle.
In direct sun. Starboard says to reduce pressure to 10 PSI if you leave the board inflated in direct sunlight. Better still, get it into the shade.
Your own board’s manual has the final say. Check its recommended working pressure and any storage advice.
How to store an inflatable SUP inflated
- Rinse it with fresh water, especially after salt water, and use a mild soap if it’s dirty. See how to clean a stand up paddle board.
- Dry it fully, including the deck pad and under the bungees. Starboard warns that storing it damp can lead to mold.
- Let some air out to suit how long and where you’re storing it (see above).
- Remove the fin so it can’t get bent or knocked.
- Store it in the shade, away from heat sources such as water heaters, furnaces, sunny windows and car roofs.
- Support it evenly. Lay it flat on a padded rack, hang it from wide straps, or stand it on its tail against a padded wall. Don’t rest it on sharp edges or one narrow point.
- Check the pressure every few days. iROCKER suggests every two to three days.
If you’re storing it outdoors, a UV cover helps. Our guides to how to store a paddle board and the best paddle board storage racks have more detail.
Inflated or deflated: pros and cons
Leaving it inflated
- Ready to go in minutes, with no pumping.
- No folding, so no creases in the PVC or deck pad.
- Takes up as much room as a hard board.
- Easier to forget about pressure creeping up on a hot day.
Deflating and rolling it
- Fits in a closet or car trunk.
- No pressure to build up, so heat and cold are less of a worry.
- You have to pump it up every time, which takes a few minutes of hard work by hand (less with an electric pump; see our best SUP pumps).
- Repeated tight rolling, especially when the board is cold, can stress the material over time.
If you paddle often and have room, leaving it partly inflated is the easier option. If space is tight or you won’t paddle for a few months, roll it up loosely and store it in its bag. Our guide on how to pack an inflatable paddle board explains how.
Winter storage
For the off-season, most people deflate and roll the board loosely, then store it in its bag somewhere dry where it won’t freeze. iROCKER warns against storing boards in freezing garages as well as hot spaces. If you do keep it inflated over winter, store it indoors at low pressure and let it warm to room temperature before you roll or pump it, since cold PVC is stiffer.
FAQ
Can I leave my inflatable SUP inflated in the car?
Not fully inflated. A closed car gets very hot, very quickly. Let air out before you leave it in the car, or take it out and put it in the shade.
Can I leave my inflatable paddle board inflated in the sun?
Only at reduced pressure, and not for long. Starboard recommends dropping to 10 PSI in direct sunlight. Shade is always better, and long sun exposure also fades and ages the material.
Does leaving an inflatable SUP inflated damage it?
Not if it’s at sensible pressure and kept out of heat. Damage comes from pressure rising in hot conditions, sharp objects, or poor support. Plenty of boards spend every summer inflated.
What PSI should I store my inflatable paddle board at?
Manufacturers differ: iROCKER suggests about 3–5 PSI for longer warm-weather storage, while Starboard’s sun advice is 10 PSI. For short gaps in a cool space, leaving it near full pressure is fine. Follow your board’s manual if it gives a figure.
Will my board lose air if I leave it inflated?
A little over days or weeks is normal. A board that goes soft overnight probably has a leak or a loose valve. Check the valve is tight, then brush on soapy water and look for bubbles. A patch kit fixes most small leaks.
