The optimal brewing temperature for coffee is between 195°F and 205°F (90-96°C). This range effectively extracts the desirable compounds while avoiding over-extraction that can lead to bitterness.
Temperature guidelines by brewing method:
Water that's too hot can extract bitter compounds, while water that's too cool may result in under-extracted, sour-tasting coffee. If brewing without a thermometer, bring water to a boil and let it sit for 30 seconds before brewing.