Water temperature is one of the easiest variables to change and one of the easiest to misunderstand. This guide gives you a suggested starting temperature for each brewing method and roast level, in Celsius or Fahrenheit, with an explanation of why it is suggested and how to adjust it.
Choose your method and roast level below. The result updates instantly, and you can compare all methods for your roast level or convert any temperature on the spot.
Your Suggested Starting Temperature
- Preheat the dripper and server so the slurry does not cool quickly.
- Pour in a steady, repeatable pattern; temperature is only one of several variables.
Compare brewing methods for your roast
| Method | Range | Position on the 80 to 100 °C scale |
|---|---|---|
| Pour Over / V60 | 198–201°F | |
| French Press | 198–203°F | |
| Chemex | 198–203°F | |
| AeroPress | 185–198°F | |
| Automatic Drip | 198–203°F | |
| Espresso | 198–201°F |
Celsius ↔ Fahrenheit converter
Why brewing temperature matters
Hot water dissolves the flavor compounds in ground coffee. Temperature changes how quickly and how much of the coffee dissolves, so it shifts the balance between sweetness, acidity, and bitterness in the cup. Most brewing methods use water at roughly 90 °C to 96 °C (195 °F to 205 °F), a window that is widely cited in brewing guidance.
How temperature affects extraction
With everything else equal, hotter water extracts faster and more fully, and cooler water extracts more slowly and less fully. A cup that tastes sour, thin, or hollow may be under-extracted, and slightly hotter water is one thing to try. A cup that tastes bitter, harsh, or astringent may be over-extracted, and slightly cooler water is one option.
Hot water does not “burn” roasted coffee, because the coffee is already roasted. What changes is extraction: when too much dissolves, more of the harsher-tasting compounds end up in the cup alongside the pleasant ones.
Roast level and brewing temperature
Lighter roasts are generally denser and extract less readily, so many brewers start at the hotter end of the range. Darker roasts are more porous and dissolve more easily, so many brewers start cooler to avoid a harsh or ashy cup. This is a practical heuristic rather than a rule, and roast labels differ from one roaster to another.
Suggested starting temperatures by method
| Method | Light roast | Medium roast | Dark roast |
|---|---|---|---|
| Pour Over / V60 | 94–96 °C (201–205 °F) | 92–94 °C (198–201 °F) | 88–92 °C (190–198 °F) |
| French Press | 93–96 °C (199–205 °F) | 92–95 °C (198–203 °F) | 90–93 °C (194–199 °F) |
| Chemex | 94–96 °C (201–205 °F) | 92–95 °C (198–203 °F) | 90–93 °C (194–199 °F) |
| AeroPress | 90–95 °C (194–203 °F) | 85–92 °C (185–198 °F) | 80–88 °C (176–190 °F) |
| Automatic Drip | 92–96 °C (198–205 °F) | 92–95 °C (198–203 °F) | 90–94 °C (194–201 °F) |
| Espresso | 93–96 °C (199–205 °F) | 92–94 °C (198–201 °F) | 90–93 °C (194–199 °F) |
Temperature notes for each method
Pour Over / V60
Pour-over water loses a few degrees in the kettle, the dripper and the first seconds of contact, so brewers usually start with water just off the boil and adjust from there.
Measure the kettle, not the slurry. The coffee bed is cooler than the water in your kettle.
French Press
In a full-immersion brew the water stays in contact with the coffee for minutes, so very hot water is not always necessary; many recipes simply use water just off the boil.
Steep time and grind size strongly influence the result, so the temperature range is only a starting point.
Chemex
The thick Chemex filter slows drainage, so brewers commonly use water at the hotter end of the usual 90-96 C range and rinse the filter first to preheat the glass.
Brewer volume, filter thickness and pour speed all change how hot the slurry actually is.
AeroPress
AeroPress recipes cover an unusually wide range. The brewer was originally taught with cooler water than most methods, and competition recipes range from about 80 C to nearly boiling depending on the dose, steep time and grind.
Because AeroPress recipes vary so widely, treat this range as a broad starting zone, not a recommendation from the manufacturer.
Automatic Drip
Automatic drip machines control the water temperature for you, and well-designed brewers are built to deliver water in roughly the 92-96 C range at the coffee bed.
Many home machines do not reach or hold the ideal range. If yours does not offer a setting, this range is simply a reference.
Espresso
Espresso machines are set to a brew temperature, commonly in the low-to-mid 90s C. Lighter roasts are often tried at the hotter end and darker roasts at the cooler end.
The number on your machine is a brew-water setting, not the temperature of the coffee puck. The puck temperature during extraction is different and is not shown by a display.
Why water temperature alone does not determine flavor
Two brews at the same temperature can taste very different. Grind size, coffee-to-water ratio, brew time, agitation, water mineral content, and the freshness and processing of the beans all change extraction. Treat temperature as one adjustment among several, and change one variable at a time so you can tell what helped.
How to measure water temperature
- Use a thermometer in the kettle, or a kettle with a built-in temperature display.
- Water that has just boiled cools by a few degrees within a minute, depending on your kettle and room, so many brewers let it rest for 30 to 60 seconds for a just-off-the-boil temperature.
- Preheat the brewer and the cup; a cold dripper or press takes heat out of the water.
- Remember that water boils at a lower temperature at altitude, roughly 1 °C lower for every 300 meters (1,000 feet) of elevation.
- On an espresso machine, the number on the display is a brew-water setting, not the temperature of the coffee puck.
Common misconceptions
- “Water must be boiling.” Most methods work best slightly below boiling, and many brewers use water that is just off the boil.
- “Hotter water always makes stronger coffee.” Hotter water extracts faster, but strength is mostly set by the ratio and extraction can become unpleasant if pushed too far.
- “Dark roasts need hotter water.” Many brewers start cooler with dark roasts, because they dissolve more easily.
- “The kettle reading is the brewing temperature.” The water cools as it moves through the kettle spout, the brewer, and onto the coffee.
Frequently asked questions
What temperature should I use for pour over?
A common starting range is about 92 °C to 96 °C (198 °F to 205 °F), with the hotter end for light roasts and the cooler end for dark roasts. Use the guide above to see the range for your roast level.
Is 200 °F a good brewing temperature?
Yes. 200 °F is about 93 °C, which sits inside the commonly used range for most brewing methods.
Can I use boiling water?
Many people do, especially for light roasts. At sea level boiling water is 100 °C (212 °F), a little above the usual range, so letting the kettle rest for 30 to 60 seconds is a simple way to land closer to it.
Why is AeroPress usually brewed cooler?
AeroPress recipes cover a wide range, from cooler water with a longer steep to near-boiling water with a short one. Because it is an immersion brewer with pressure at the end, many recipes use cooler water than other methods, but there is no single rule.
How do I convert Celsius to Fahrenheit?
Multiply by 9, divide by 5, and add 32. To go the other way, subtract 32, multiply by 5, and divide by 9. The converter in the tool does this for you as you type.
Related guides on JoinWorky
- How water temperature affects a home-brewed cup of coffee – a deeper look at temperature and taste
- Why pour-over coffee can taste sour and what to adjust – when the cup tastes sour
- Why coffee tastes bitter: a home brewing troubleshooting guide – when the cup tastes bitter
- Light, medium, and dark coffee roasts – what roast labels mean
- Coffee brewing time – how steep and drawdown time interact with temperature
- Coffee grind size explained – the other major extraction lever
More coffee tools
- Coffee Brewing Ratio Calculator – work out coffee and water amounts for any brewing method.
- Espresso Extraction Calculator – turn dose, yield, and time into a brew ratio.
- All JoinWorky coffee tools – the full directory.
How these recommendations were compiled
The ranges are starting points synthesized from widely published brewing guidance: the commonly cited 90 °C to 96 °C (195 °F to 205 °F) window for brewing water, the temperature range used for espresso machine settings in barista competition rules, the way manufacturers and experienced brewers describe AeroPress water, and the common practice of starting hotter for lighter roasts and cooler for darker roasts. Published sources disagree on exact numbers, so each recommendation is a range and not a single correct value.