[Python] Trying to get the CPU temperature using several libraries returns wrong results

I want to get the CPU temperature using Python code. I’m using Windows 11 24H2 and Python 3.10.6. I’ve already tried using WinTmp.CPU_Temp():

import WinTmp
print(WinTmp.CPU_Temp())
>>> 0.0


But that seems wrong.

I've also tried:

import clr
from pathlib import Path

try:
import pynvml
except ImportError:
pynvml = None
try:
import win32com.client
except ImportError:
win32com = None


def initialize_hardware_monitor():
try:
dll_path = str(Path(__file__).parent / "LibreHardwareMonitorLib.dll")
if not os.path.exists(dll_path):
dll_path = str(Path(__file__).parent / "OpenHardwareMonitorLib.dll")
if not os.path.exists(dll_path):
print("Error: LibreHardwareMonitorLib.dll or OpenHardwareMonitorLib.dll not found.")
return None
clr.AddReference(dll_path)
from LibreHardwareMonitor import Hardware
handle = Hardware.Computer()
handle.IsCpuEnabled = True
handle.IsGpuEnabled = True
handle.Open()
print("Hardware Monitor initialized successfully")
return handle
except Exception as e:
print(f"Error initializing Hardware Monitor: {e}")
return None


def get_wmi_msacpi_temperature(sensor_type="cpu"):
if not win32com:
print(f"pywin32 not installed for {sensor_type.upper()}")
return None
try:
wmi_obj = win32com.client.GetObject("winmgmts:\\\\.\\root\\wmi")
sensors = wmi_obj.ExecQuery("SELECT * FROM MSAcpi_ThermalZoneTemperature")
for sensor in sensors:
temp_kelvin = sensor.CurrentTemperature / 10.0
temp_celsius = temp_kelvin - 273.15
if sensor_type in sensor.InstanceName.lower() and 0 < temp_celsius < 100:
return round(temp_celsius, 1)
print(f"No {sensor_type.upper()} temperature sensor in MSAcpi_ThermalZoneTemperature")
return None
except Exception as e:
print(f"Error getting {sensor_type.upper()} temperature via MSAcpi: {e}")
return None


def get_cpu_temperature():
try:
handle = initialize_hardware_monitor()
if handle:
for hardware in handle.Hardware:
hardware.Update()
if hardware.HardwareType == 2:
for sensor in hardware.Sensors:
if sensor.SensorType == 2 and "cpu" in sensor.Name.lower():
temp = round(sensor.Value, 1)
if 0 < temp < 100:
return temp
print("No CPU temperature sensor found in Hardware Monitor")
except Exception as e:
print(f"Error getting CPU temperature via Hardware Monitor: {e}")

# WMI
temp = get_wmi_msacpi_temperature("cpu")
if temp:
return temp
print("All CPU temperature methods failed.")
return None


print(get_cpu_temperature())


Output:

Hardware Monitor initialized successfully
No CPU temperature sensor found in Hardware Monitor
Error getting CPU temperature via MSAcpi: (-2147217405, 'OLE error 0x80041003', None, None)
All CPU temperature methods failed.
None


So, by using WMI or MSAcpi to retrieve the temperature also through OpenHardwareMonitorLib.dll, LibreHardwareMonitorLib.dll, or CPUThermometerLib.dll, I get incorrect information (typically 0°C or 29°C) or errors. My main goal is to implement my idea without running OpenHardwareMonitor (OHM). I can use the DLLs, but I don’t want to run third-party applications. (Btw, the OHM app shows correct data.)

I also tried all the code from these topics: Accessing CPU temperature in python But nothing works.

Do you have any ideas on how I can get the information I’m interested in?

I’m testing my code on a Ryzen 9 3950X and Ryzen 7 2700X.

(Also, please describe the process of using .dll files in code in more detail, as I don’t have experience in using C#, C++ libraries and in mixing Python code with it, if the solution you suggest includes using C libraries.

If that's not possible, also tell me so I can look in another direction.)

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