How Long Does Watermelon Last?
Cut watermelon lasts 3–4 days in the fridge and must not sit out for more than 2 hours. A whole watermelon keeps about 1 week on the counter or up to 2 weeks in the fridge.
Watermelon — cut
shelf life- Whole: 2 weeks in the fridge
Fridge at 40°F (4°C) or below · freezer at 0°F (−18°C). Freezer times are for best quality; frozen food stays safe longer.
Watermelon is more than 90 percent water, with low-acid flesh protected by a thick rind. Whole, it keeps about a week on the counter. Once cut, the sweet, wet, low-acid flesh is an ideal place for bacteria carried in from the rind or the knife, so cut watermelon must stay refrigerated.
How to store watermelon
- Scrub the rind under running water and dry it before cutting, because the knife drags whatever is on the outside through the flesh.
- Wrap the cut face of a half melon tightly in plastic wrap, or store cubes in an airtight container, to stop it absorbing fridge odors and drying out.
- Drain off the pink liquid that collects at the bottom of a container of cubes each day; fruit sitting in its own juice turns slimy sooner.
- Keep a whole watermelon out of the sun in a cool spot and refrigerate it a day before serving if you have the room.
- At picnics, keep cut watermelon in a cooler on ice and put out only what will be eaten within an hour or two.
How to tell if watermelon has gone bad
- A slimy or slippery film on the cut surface.
- A sour, tangy or fizzy taste, or a fermented smell; stop eating if a piece tastes carbonated.
- Flesh that has turned dark, mushy, gritty or is pulling away from the seeds in a dry, mealy way.
- A whole melon with soft spots, dark sunken patches, mold on the rind or liquid seeping out.
Bacteria that cause food poisoning usually do not change the look, smell or taste of food. Go by the time limits first, and the signs above second.
Watermelon shelf life chart
| State | Fridge | Freezer | Pantry |
|---|---|---|---|
| Cut | 3–4 days | 8–12 months | Not safe |
| Frozen watermelon thaws mushy; use it frozen in smoothies, slushes or as ice cubes. | |||
| Whole | 2 weeks | Not recommended | 1 week |
Not safe = perishable: no more than 2 hours at room temperature (1 hour above 90°F / 32°C). Not recommended = possible, but quality suffers or it serves no purpose.
Frequently asked questions
How long does cut watermelon last in the fridge?
Cut watermelon lasts 3–4 days in the fridge in an airtight container or tightly wrapped. That applies to halves, slices and cubes, and to pre-cut watermelon from the store counted from the day it was cut. Bacteria that cause illness do not change the look or smell, so stick to the time limit.
Is watermelon left out overnight safe to eat?
No. Cut watermelon that has been at room temperature for more than 2 hours, or 1 hour above 90°F (32°C), should be thrown away. Cut melon is a known vehicle for Salmonella and Listeria, and it offers bacteria moisture, sugar and low acidity. A whole, uncut melon left out overnight is fine.
Does a whole watermelon need to be refrigerated?
No. A whole watermelon keeps about 1 week at room temperature and up to 2 weeks in the fridge. It does not ripen after picking, so there is no benefit to leaving it out longer. Chill it before serving and refrigerate it once cut.
Can you freeze watermelon?
Yes, but only for blended or frozen uses. Freeze seedless cubes on a tray and bag them for 8–12 months at best quality. Thawed watermelon collapses into mush, so use the cubes straight from the freezer in smoothies, slushes, sorbet or drinks.
Why is my watermelon slimy or fizzy?
Sliminess and a fizzy, sour taste mean bacteria or yeast have been growing and fermenting the sugars. Discard the whole container, not just the affected pieces. It usually happens when cut melon is kept longer than 3–4 days or spent time at room temperature.
Related foods
| Food | Fridge | Freezer | Pantry |
|---|---|---|---|
| Cantaloupe Cut |
3–4 days | 8–12 months | Not safe |
| Pineapple Whole |
3–5 days | Not recommended | 1–2 days |
| Fruit Salad Homemade |
3–5 days | Not recommended | Not safe |
| Grapes Whole |
1–2 weeks | 8–12 months | 1 day |
| Smoothies Homemade |
1–2 days | 2–3 months | Not safe |
| Strawberries Whole |
3–7 days | 8–12 months | 1 day |
Reviewed 2026-09-20. Times follow published USDA FoodKeeper / FSIS, FDA and CDC storage guidance; where sources differ we use the shorter time. How we compile this data.