Objectively measurable stimuli are used in psychophysics experiments, such as lights varying in brightness, or sounds varying in loudness. A threshold, or limin, is the point at which a subject can detect a stimulus, or a change in the stimulus.
Cancun: Annual Weather Averages. June is the hottest month in Cancun with an average temperature of 28Â°C (82Â°F) and the coldest is January at 23Â°C (73Â°F) with the most daily sunshine hours at 11 in August. The wettest month is September with an average of 270mm of rain.
The coolest period in Cancun is in January to February with temperatures averaging 73 fahrenheit. Temperatures do not drop very much below 68 fahrenheit at night. The warmest time in Cancun with temperatures in the mid-80s is around June and July.