Moisture Meters

Moisture Meters

Moisture levels play a big role in green coffee quality. If they drop too low, coffee can taste flat or roast unpredictably. Too high, and you risk mould or defects. A good moisture meter gives you fast, reliable readings - helping you catch problems early and store, roast, and plan with confidence.

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Your guide to Moisture Meters

  • Why does moisture content matter in green coffee?

    Moisture levels affect how coffee roasts, ages, and tastes. Too dry, and it can roast too quickly or lose complexity. Too much moisture, and there’s a risk of mould, fermentation, or cup defects. Staying within the ideal range - usually between 10.5% and 11.5% - helps protect quality at every stage.

  • When should I measure it?

    It depends where you are in the chain. Producers measure moisture to check when coffee is ready to move off the drying beds. Roasters tend to check on arrival or during storage to monitor how the coffee is holding up. It’s a quick way to flag problems early - especially if a coffee isn’t performing as expected in the roaster.

  • What makes a good moisture meter?

    Speed, accuracy, and ease of use. The best meters give consistent readings from small samples, without needing much setup. Some also track temperature and density, or link to apps to help you keep better records - but even a simple device can make a big difference.

Your questions, answered

Can I use one meter for all types of coffee?

Some meters are designed specifically for green coffee. Others can handle parchment or roasted as well. Always check the specs - using the wrong mode or sample type can throw off your readings.

Who are moisture meters for?

They’re most useful for producers, exporters, and professional roasters - anyone handling green coffee in volume or managing storage. Home roasters generally don’t need one unless they’re buying in bulk and storing coffee long term.

Why do moisture levels matter so much in green coffee?

Moisture plays a key role in how coffee stores, roasts, and tastes. If it’s too low, beans can roast too quickly and taste flat, woody, or stale. Too much moisture increases the risk of mould, fermentation, or uneven flavour development.

What’s the ideal moisture range for green coffee?

Most producers and roasters aim for 10.5% to 11.5%. That range helps preserve flavour, improve roasting consistency, and extend shelf life - especially important if the coffee is being stored or shipped for long periods.

How does climate affect moisture levels?

Both extremes can cause problems. Hot, humid conditions can increase moisture and lead to condensation inside storage bags, dulling flavour and aroma. Dry air, on the other hand, can pull too much moisture from the beans, making them brittle.