Storing green coffee: temperature, humidity, bags and age
Green coffee is a dried seed that keeps trading moisture with the air. Store it cool, dry, off the floor and away from smells, and it will hold its quality for months.
6 min read Updated October 9, 2026
Green coffee changes slowly in storage. It gains or loses moisture with the surrounding air, loses aromatics, and in poor conditions can develop musty, woody or papery flavors, or in the worst case mold. Good storage costs little; poor storage wastes the most expensive thing in your building.
Conditions
- Cool and stable: avoid heat from the roaster, radiators, sunny walls and roof spaces that cook in summer.
- Moderate humidity: high humidity lets beans gain moisture and risks mold; very dry air dries them out. Many roasters aim for a steady, moderate relative humidity and monitor it with a simple logger.
- Dark and odor-free: green coffee absorbs smells. Keep it away from fuel, cleaning chemicals, spices and packaging solvents.
- Off the floor and away from walls: on pallets, with space for air and for checking for pests.
Bags and liners
| Packaging | Points |
|---|---|
| Jute or sisal sacks | Traditional, breathable; offers little protection from humidity and odors |
| Jute with a hermetic liner | A sealed plastic liner inside the sack limits moisture and gas exchange; widely used for specialty lots |
| Vacuum-packed boxes | Strong protection for high-value lots; costlier |
| Opened sacks | Fold and clip liners closed, or decant into sealed food-grade bins |
Pests and hygiene
Green coffee storage is part of your food premises. Use a pest control contractor or a documented monitoring routine, keep the area clean and swept, and inspect deliveries for insects and damage before they come in. Note these controls in your HACCP plan.
How long green coffee keeps
There is no fixed shelf life. Well-processed, well-dried coffee in hermetic liners in good conditions can hold its quality for many months; the same coffee in jute in a warm unit may fade noticeably sooner. Cup stored lots periodically, note arrival dates, and use first in, first out.
Green store checklist
- Temperature and humidity logger in the green store
- Pallets, clear of walls, with aisles for inspection
- Arrival date and lot reference on every sack
- Opened liners resealed the same day
- Monthly cupping of lots held longer than a few months
- Pest monitoring recorded
Where Roastnet helps
Questions roasters ask
- How long can green coffee be stored?
- Many coffees hold well for several months to around a year in good conditions, especially in hermetic liners, but quality fades over time. Cup regularly and roast older lots first.
- Should green coffee be stored in a fridge?
- No. Cold storage risks condensation when coffee comes out. A cool, dry, stable room is better.
Official sources
Rules change. These sources were checked on October 9, 2026; always confirm the current position with the body that publishes them before you act.
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