SEN0657 inaccurate temperature reading
Brian.Wilson 2026-01-03 13:45:21 171 Views3 Replies Hello,
I recently purchased a SEN0657 weather station. The reported temperature readings are up to 9 degrees Celsius higher than actual when in sunlight even though the device has a radiation shield.
Do you have any advice?

Regards,
Brian
Mount the sensor on a tall mast, at least 1.5–2 meters above the ground. Arrange free airflow around the shield. No walls, fences, or trees nearby.
love.forcircuits Were you able to resolve your issue? I think I am seeing the same thing. Maybe modifying the heat shield would be appropriate here? BTW RH% is a function of temperature so this value will also not be accurate if temperature is not correct.
Richard.White Hi Brian,
Direct sunlight can heat the sensor even with a radiation shield, causing higher readings. Place it in a shaded, ventilated area away from heat-reflecting surfaces and consider applying a calibration offset to match actual temperature.
Hung.dol 

