Acoustic Guitar Humidity Checker

Start with a measured reading

Use the relative humidity value from a hygrometer near the instrument or inside its storage case. An outdoor weather forecast or a meter in another room may describe different conditions. If the guitar moves between a case and a stand, keep those readings separate in your notes.

1. Read the meter’s instructions for placement, accuracy and the time it needs to settle after a move. Check its battery and any recommended accuracy checks before relying on an unexpected number.
2. Enter the number without the percent symbol. Decimals such as 44.5 work too. The form accepts 0–100% RH; accepting an extreme reading does not mean the environment is suitable for storage.
3. Select “Check humidity” to see the comparison and next checks. Editing the value clears the old result, so press the button again after a change. Reset clears the form for your next reading; Clear record removes the saved readings.

Each successful check adds the reading, device time and optional storage location to a record below the result. Print it before leaving or refreshing: it holds the latest 12 entries only for this visit. Add temperature and any minimum/maximum readings to your printed copy. The record helps you compare observations; it does not calculate exposure duration or a damage score.

What the reference range means

Taylor recommends 45–55% relative humidity and measuring the environment where its guitars are stored. This checker includes both endpoints: 45% and 55% return “within.” A reading of 44.9% returns “below”; 55.1% returns “above.”

The categories describe that comparison, not severity. A single value cannot tell you how long a guitar has experienced those conditions or identify damage. A sensor’s accuracy also matters near a boundary. Use the recommendation for your instrument, including any model-specific guidance, when choosing your next step.

Taylor’s separate articles describe dryness-related changes such as low action and sharp fret ends, and excess-humidity changes such as high action. Those observations are reasons to inspect the instrument; they do not let this one-number tool diagnose the cause of buzzing or difficult playing.

Turn a reading into a useful next check

For the full care workflow, equipment distinctions and a free diary, continue to the acoustic guitar humidity guide. If you have noticed a change in string height, the acoustic action measurement guide explains how to record it consistently. For the wider sequence, see theacoustic setup guide.

Prefer a printable workbench reference? View the Acoustic Setup Guide contents and preview for humidity-before-hardware guidance, a measurement workflow and a blank setup record. Start with the free result and care article; the PDF is an optional way to keep the checks beside your guitar.

Humidity checker questions

How does this acoustic guitar humidity checker work?

Enter a measured relative humidity from 0 to 100. Below 45 is below the Taylor reference, 45 through 55 is within it, and above 55 is above it. The checker does not read a sensor or measure the moisture in your guitar.

Can I use it for a Martin, Yamaha or another acoustic?

You can compare any reading, but the tool uses one clearly labelled Taylor reference. Check the current care guidance for your actual instrument before deciding what environment or equipment it needs.

Does a result within range mean my guitar is undamaged?

No. A hygrometer describes the air at that location and time. The reading cannot establish the guitar’s previous exposure, condition or need for repair. Inspect changes in playability and seek advice for visible damage.

Should I adjust the action after a high or low result?

The result alone is not a reason to change the setup. Verify the reading, review the storage history and understand the guitar’s condition first. Use measured action and relief, the maker’s instructions and qualified advice when deciding on any adjustment.