What Is 30°C in Fahrenheit?
30 degrees Celsius is 86 degrees Fahrenheit.
How to Convert Celsius to Fahrenheit
To convert degrees Celsius to degrees Fahrenheit, multiply by 9/5, then add 32.
For example: 25 °C × 9/5 = 45, and 45 + 32 = 77 °F.
Where You Meet This Number
Thirty degrees is where a European summer forecast starts generating heat advisories. For an American reader, 86 °F reads as a hot but ordinary day — which is exactly why the number is worth converting rather than guessing.
A heatwave warning at 30 °C is 86 °F, roughly an average July afternoon in Washington DC.
What People Get Wrong
The mental shortcut starts to drift here: doubling and adding 30 gives 90 °F against the exact 86 °F. Over a 4-degree error you misjudge whether air conditioning is needed.
Weather Temperatures in Celsius and Fahrenheit
| Degrees Celsius (°C) | Degrees Fahrenheit (°F) |
|---|---|
| 20 | 68 |
| 24 | 75.2 |
| 26 | 78.8 |
| 28 | 82.4 |
| 30 | 86 |
| 32 | 89.6 |
| 34 | 93.2 |
| 35 | 95 |
| 38 | 100.4 |
| 40 | 104 |
| 45 | 113 |
About These Scales
Degree Celsius
The Celsius scale puts the freezing point of water at 0 degrees and its boiling point at 100 degrees at sea level. It is the everyday temperature scale in nearly every country except the United States.
Degree Fahrenheit
On the Fahrenheit scale water freezes at 32 degrees and boils at 212 degrees, so one Fahrenheit degree is 5/9 the size of a Celsius degree. It remains the standard scale for weather, ovens and body temperature in the United States.
Definitions follow The SI Brochure, BIPM. See how we calculate for the exact values and rounding rules.
Frequently Asked Questions
Is 30 °C hot?
Yes. At 86 °F most people seek shade, and prolonged activity needs extra water.
What is 35 °C in Fahrenheit?
35 °C is exactly 95 °F, the point at which heat starts to become dangerous in humid air.
At what temperature does the body struggle to cool itself?
Around 35 °C combined with very high humidity, because sweat stops evaporating. That combination, not the temperature alone, is what makes heat dangerous.
What is 30 °C in kelvin?
30 °C is 303.15 K on the absolute scale.