Why metal feels colder than wood at room temperature

Try the two-spoon comparison

A metal spoon can feel noticeably colder than a wooden spoon even when both are at roughly the same temperature. A quick comparison lets you feel the difference yourself.

1. Leave a dry metal spoon and a dry wooden spoon side by side in a comfortably warm room for a while.
2. Choose a spot away from direct sunlight and heaters. Do not use objects straight from the fridge or hot washing-up water.
3. Briefly touch each with the same hand, one after the other. Notice which contact feels colder.

Your skin responds to heat flow

If both spoons are cooler than your skin, heat moves from your hand into them. Metal takes up heat at the contact surface more quickly and conducts it away better than wood. Your skin cools faster at that spot, which feels cold.

Thermal conductivity is part of the explanation, but thermal effusivity matters too. This describes how readily a material can absorb or release heat on contact. The metal spoon does not have to be at a lower temperature to feel colder.

Do not use your hand as a thermometer

The same mechanism explains why a metal table edge can feel colder than a wooden surface in the same room. Touch alone cannot establish a temperature difference. If you want to check the starting temperatures, use a suitable contact thermometer.

Only compare dry objects at roughly the same comfortable room temperature. Do not touch hot, icy-cold or electrically powered parts for this experiment. Surface finish, thickness and moisture also affect the sensation.