Method for temperature-dependent setting of the colorimetric or photometric properties of an LED lighting device with LEDs that emit light of different colour or wavelength, the luminous flux components of which determine the light colour, colour temperature and/or colour locus of the light mixture emitted by the LED lighting device and are set by actuation of the different coloured LEDs, which are combined to LED colour groups of the same colour and which consist of coloured and white LEDs, by means of pulse width modulated control signals, including - a temperature measurement, in particular a measurement of the temperature within the LED lighting device, of a circuit board receiving the LEDs and/or of the junction temperature of at least one LED, - a basic setting of the light mixture to a predetermined light colour, colour temperature and/or a colour locus by setting pulse width modulated control signals corresponding to the luminous flux components of the LED colour groups of the light mixture at an initial temperature of the LED lighting device and - a measured-temperature-dependent change of the pulse width modulated control signals corresponding to the luminous flux components of the LED colour groups of the light mixture that was set to a predetermined light colour, colour temperature and/or colour locus, wherein - the dependence of the pulse width modulated control signals on the temperature is ascertained by way of the brightness of the LED colour groups that changes linearly or quadratically over the relevant temperature range, characterized in that - a factor (f PWM) corresponding to the inverse of the relative brightness change of the LED colour groups in relation to the basic setting is ascertained, - a value of the pulse width modulated control signals (PWM), corresponding to the measured temperature, of each LED colour group is determined by multiplying the value of the pulse width modulated control signals (PWM A), corresponding to the basic setting, of each LED colour group by the factor (f PWM), depending on the measured temperature, according to the equation PWM T = PWM A * f PWM T, - the pulse width modulated signals (PWM) of each LED colour group in the LED lighting device are set, - a brightness measurement is carried out and the difference between the measured brightness actual value and the brightness setpoint value is ascertained and - the luminous intensity emitted by the LED lighting device is equalized to the brightness setpoint value by a corresponding increase or decrease in the electric power supplied to the LED colour groups. - a temperature measurement, in particular a measurement of the temperature within the LED lighting device, of a circuit board receiving the LEDs and/or of the junction temperature of at least one LED, - a basic setting of the light mixture to a predetermined light colour, colour temperature and/or a colour locus by setting pulse width modulated control signals corresponding to the luminous flux components of the LED colour groups of the light mixture at an initial temperature of the LED lighting device and - a measured-temperature-dependent change of the pulse width modulated control signals corresponding to the luminous flux components of the LED colour groups of the light mixture that was set to a predetermined light colour, colour temperature and/or colour locus, wherein - the dependence of the pulse width modulated control signals on the temperature is ascertained by way of the brightness of the LED colour groups that changes linearly or quadratically over the relevant temperature range, - a factor (f PWM) corresponding to the inverse of the relative brightness change of the LED colour groups in relation to the basic setting is ascertained, - a value of the pulse width modulated control signals (PWM), corresponding to the measured temperature, of each LED colour group is determined by multiplying the value of the pulse width modulated control signals (PWM A), corresponding to the basic setting, of each LED colour group by the factor (f PWM), depending on the measured temperature, according to the equation PWM T = PWM A * f PWM T, - the pulse width modulated signals (PWM) of each LED colour group in the LED lighting device are set, - a brightness measurement is carried out and the difference between the measured brightness actual value and the brightness setpoint value is ascertained and - the luminous intensity emitted by the LED lighting device is equalized to the brightness setpoint value by a corresponding increase or decrease in the electric power supplied to the LED colour groups.